Analysis Overview
SHA256
877d472af519397f8e8be5dcf8c756aed03e5ce022e6eba821f107336154ef81
Threat Level: Known bad
The file f4211bfb02fddddf810c3cc71b249020N.exe was found to be: Known bad.
Malicious Activity Summary
DcRat
Process spawned unexpected child process
Dcrat family
DCRat payload
UAC bypass
DCRat payload
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Checks whether UAC is enabled
Drops file in Windows directory
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
Uses Task Scheduler COM API
Modifies registry class
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
System policy modification
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-07-20 17:42
Signatures
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Dcrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-20 17:42
Reported
2024-07-20 17:44
Platform
win7-20240705-en
Max time kernel
90s
Max time network
121s
Command Line
Signatures
DcRat
Process spawned unexpected child process
| Description | Indicator | Process | Target |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe |
UAC bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe | N/A |
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| N/A | N/A | C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Icons\56085415360792 | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\dllhost.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\5940a34987c991 | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\10\Resources\1033\winlogon.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\Common Files\Adobe\conhost.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Icons\wininit.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\WmiPrvSE.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\24dbde2999530e | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\10\Resources\1033\cc11b995f2a76d | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Common Files\Adobe\conhost.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\Common Files\Adobe\088424020bedd6 | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Fonts\System.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Windows\Fonts\27d1bcfc3c54e0 | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Windows\de-DE\services.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Windows\de-DE\c5b4cb5e9653cc | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
Enumerates physical storage devices
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe | N/A |
Suspicious use of WriteProcessMemory
System policy modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe | N/A |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\f4211bfb02fddddf810c3cc71b249020N.exe
"C:\Users\Admin\AppData\Local\Temp\f4211bfb02fddddf810c3cc71b249020N.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Chainserverhostnetcommon\YJTOmpNsmC9R7eL.vbe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Chainserverhostnetcommon\xvJlHi5CymWgg0Dp0wux5lJOn26p.bat" "
C:\Chainserverhostnetcommon\sessionbrokerHost.exe
"C:\Chainserverhostnetcommon\sessionbrokerHost.exe"
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Common Files\Adobe\conhost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\Adobe\conhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Common Files\Adobe\conhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 7 /tr "'C:\Windows\Fonts\System.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Windows\Fonts\System.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 13 /tr "'C:\Windows\Fonts\System.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\Chainserverhostnetcommon\csrss.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Chainserverhostnetcommon\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Chainserverhostnetcommon\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 14 /tr "'C:\Recovery\b2a802a2-3b12-11ef-8991-d2f1755c8afd\lsass.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\b2a802a2-3b12-11ef-8991-d2f1755c8afd\lsass.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 9 /tr "'C:\Recovery\b2a802a2-3b12-11ef-8991-d2f1755c8afd\lsass.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\dllhost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\dllhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 9 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\dllhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 10 /tr "'C:\Users\Admin\dwm.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Users\Admin\dwm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\dwm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\{90140000-0116-0409-1000-0000000FF1CE}-C\OSPPSVC.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0116-0409-1000-0000000FF1CE}-C\OSPPSVC.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-0116-0409-1000-0000000FF1CE}-C\OSPPSVC.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Users\Admin\NetHood\lsass.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Users\Admin\NetHood\lsass.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\NetHood\lsass.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\Desktop\csrss.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\All Users\Desktop\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\Desktop\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-002C-0409-0000-0000000FF1CE}-C\Proof.fr\Idle.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-002C-0409-0000-0000000FF1CE}-C\Proof.fr\Idle.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 9 /tr "'C:\MSOCache\All Users\{90140000-002C-0409-0000-0000000FF1CE}-C\Proof.fr\Idle.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 13 /tr "'C:\Chainserverhostnetcommon\WmiPrvSE.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Chainserverhostnetcommon\WmiPrvSE.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 5 /tr "'C:\Chainserverhostnetcommon\WmiPrvSE.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Icons\wininit.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Icons\wininit.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Icons\wininit.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\conhost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\conhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 9 /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\conhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 8 /tr "'C:\Program Files\7-Zip\Lang\dllhost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files\7-Zip\Lang\dllhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 9 /tr "'C:\Program Files\7-Zip\Lang\dllhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\WmiPrvSE.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\WmiPrvSE.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\WmiPrvSE.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 11 /tr "'C:\Recovery\b2a802a2-3b12-11ef-8991-d2f1755c8afd\sppsvc.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Recovery\b2a802a2-3b12-11ef-8991-d2f1755c8afd\sppsvc.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 10 /tr "'C:\Recovery\b2a802a2-3b12-11ef-8991-d2f1755c8afd\sppsvc.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 6 /tr "'C:\Windows\de-DE\services.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Windows\de-DE\services.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 11 /tr "'C:\Windows\de-DE\services.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\10\Resources\1033\winlogon.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\10\Resources\1033\winlogon.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\10\Resources\1033\winlogon.exe'" /rl HIGHEST /f
C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe
"C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\audiodg.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | cp57330.tw1.ru | udp |
| RU | 185.114.247.170:80 | cp57330.tw1.ru | tcp |
| RU | 185.114.247.170:80 | cp57330.tw1.ru | tcp |
| RU | 185.114.247.170:80 | cp57330.tw1.ru | tcp |
Files
C:\Chainserverhostnetcommon\YJTOmpNsmC9R7eL.vbe
| MD5 | d47f398bcb4d7af45368ac7e2b7956e4 |
| SHA1 | 8acbdd4ae19bcad76b7ed2dfd94fa102df2914a6 |
| SHA256 | 97dba9f4d3e8ba6fa8f6f4534f4ed92bb85849d2da045abc84ef54d8777208db |
| SHA512 | e63133d63e32081267d71220d54f3277559cf0f74883c6dd34bac8c73a41ef905ff4d66f2d9961af37cf07384f2f383e005d8b1bda8740807f1c295a581f5ee0 |
C:\Chainserverhostnetcommon\xvJlHi5CymWgg0Dp0wux5lJOn26p.bat
| MD5 | e9cd2d5648ebb737cc9be7dbdf969056 |
| SHA1 | 3e34a5cd97ed60e282301025ddca974614d74c5a |
| SHA256 | a154e1f761b72ef3fa982881229ac2ee7d9d358285ee241c911fde570f376bbe |
| SHA512 | e61b01bc01ffea738d9e4c7afd400fe815c46ee16223fdb9971b843d55e509b6529cbc0f0d36906b3d12ffc8124ad940499ab318573309bb624544e7bd17ad17 |
C:\Chainserverhostnetcommon\sessionbrokerHost.exe
| MD5 | f889fcff1de0857b351474a2e794b7ca |
| SHA1 | c5c9be94d9bf74a382d01374a869b2c34f7179ac |
| SHA256 | 48b84c11bf2ccfe73802565024f5abc589b9bef4c0aece8439baee4f260112e0 |
| SHA512 | 1d2bad15de6c57f699a81a13288be968bc0638b7629d741b795b07f608a0d8928d92da5f76d121ea0ed95fbc13c5ece7403fe8accb1aa870acda6414e7b6a561 |
memory/2728-13-0x0000000001290000-0x000000000137E000-memory.dmp
memory/2728-14-0x0000000000150000-0x0000000000158000-memory.dmp
memory/2728-15-0x0000000000160000-0x000000000016A000-memory.dmp
memory/2728-16-0x0000000000170000-0x000000000017C000-memory.dmp
memory/2624-61-0x0000000000090000-0x000000000017E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-20 17:42
Reported
2024-07-20 17:44
Platform
win10v2004-20240709-en
Max time kernel
101s
Max time network
120s
Command Line
Signatures
DcRat
Process spawned unexpected child process
| Description | Indicator | Process | Target |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe |
UAC bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe | N/A |
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f4211bfb02fddddf810c3cc71b249020N.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\WScript.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\Common Files\DESIGNER\taskhostw.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\Windows Portable Devices\121e5b5079f7c0 | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\WindowsPowerShell\Modules\Microsoft.PowerShell.Operation.Validation\1.0.1\f3b6ecef712a24 | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\DESIGNER\taskhostw.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\6cb0b6c459d5d3 | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files\Common Files\DESIGNER\ea9f0e6c9e2dcd | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files\Windows Portable Devices\56085415360792 | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\Google\Temp\SppExtComObj.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\Google\Temp\e1ef82546f0b02 | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files\Windows Portable Devices\wininit.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\WindowsPowerShell\Modules\PackageManagement\TrustedInstaller.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\WindowsPowerShell\Modules\PackageManagement\04c1e7795967e4 | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\Windows Portable Devices\sysmon.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Program Files (x86)\WindowsPowerShell\Modules\Microsoft.PowerShell.Operation.Validation\1.0.1\spoolsv.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\RemotePackages\conhost.exe | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| File created | C:\Windows\RemotePackages\088424020bedd6 | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\f4211bfb02fddddf810c3cc71b249020N.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000_Classes\Local Settings | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe | N/A |
Suspicious use of WriteProcessMemory
System policy modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Chainserverhostnetcommon\sessionbrokerHost.exe | N/A |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\f4211bfb02fddddf810c3cc71b249020N.exe
"C:\Users\Admin\AppData\Local\Temp\f4211bfb02fddddf810c3cc71b249020N.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Chainserverhostnetcommon\YJTOmpNsmC9R7eL.vbe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Chainserverhostnetcommon\xvJlHi5CymWgg0Dp0wux5lJOn26p.bat" "
C:\Chainserverhostnetcommon\sessionbrokerHost.exe
"C:\Chainserverhostnetcommon\sessionbrokerHost.exe"
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 7 /tr "'C:\Program Files\Common Files\DESIGNER\taskhostw.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Program Files\Common Files\DESIGNER\taskhostw.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 5 /tr "'C:\Program Files\Common Files\DESIGNER\taskhostw.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Portable Devices\wininit.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\Windows Portable Devices\wininit.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Portable Devices\wininit.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 7 /tr "'C:\Users\All Users\Package Cache\lsass.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Users\All Users\Package Cache\lsass.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 5 /tr "'C:\Users\All Users\Package Cache\lsass.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TrustedInstallerT" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\WindowsPowerShell\Modules\PackageManagement\TrustedInstaller.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TrustedInstaller" /sc ONLOGON /tr "'C:\Program Files (x86)\WindowsPowerShell\Modules\PackageManagement\TrustedInstaller.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TrustedInstallerT" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\WindowsPowerShell\Modules\PackageManagement\TrustedInstaller.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Users\Default User\RuntimeBroker.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Default User\RuntimeBroker.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Users\Default User\RuntimeBroker.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\services.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\services.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\services.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Google\Temp\SppExtComObj.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files (x86)\Google\Temp\SppExtComObj.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Google\Temp\SppExtComObj.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 12 /tr "'C:\Windows\RemotePackages\conhost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Windows\RemotePackages\conhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 13 /tr "'C:\Windows\RemotePackages\conhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Portable Devices\sysmon.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Portable Devices\sysmon.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Portable Devices\sysmon.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 7 /tr "'C:\Chainserverhostnetcommon\dllhost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Chainserverhostnetcommon\dllhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 9 /tr "'C:\Chainserverhostnetcommon\dllhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 12 /tr "'C:\Chainserverhostnetcommon\sihost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Chainserverhostnetcommon\sihost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 9 /tr "'C:\Chainserverhostnetcommon\sihost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\WindowsPowerShell\Modules\Microsoft.PowerShell.Operation.Validation\1.0.1\spoolsv.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files (x86)\WindowsPowerShell\Modules\Microsoft.PowerShell.Operation.Validation\1.0.1\spoolsv.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\WindowsPowerShell\Modules\Microsoft.PowerShell.Operation.Validation\1.0.1\spoolsv.exe'" /rl HIGHEST /f
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\VI0zTzLboc.bat"
C:\Windows\system32\w32tm.exe
w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe
"C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dwm.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | cp57330.tw1.ru | udp |
| RU | 185.114.247.170:80 | cp57330.tw1.ru | tcp |
| RU | 185.114.247.170:80 | cp57330.tw1.ru | tcp |
| US | 8.8.8.8:53 | 170.247.114.185.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| RU | 185.114.247.170:80 | cp57330.tw1.ru | tcp |
| US | 8.8.8.8:53 | 18.58.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
Files
C:\Chainserverhostnetcommon\YJTOmpNsmC9R7eL.vbe
| MD5 | d47f398bcb4d7af45368ac7e2b7956e4 |
| SHA1 | 8acbdd4ae19bcad76b7ed2dfd94fa102df2914a6 |
| SHA256 | 97dba9f4d3e8ba6fa8f6f4534f4ed92bb85849d2da045abc84ef54d8777208db |
| SHA512 | e63133d63e32081267d71220d54f3277559cf0f74883c6dd34bac8c73a41ef905ff4d66f2d9961af37cf07384f2f383e005d8b1bda8740807f1c295a581f5ee0 |
C:\Chainserverhostnetcommon\xvJlHi5CymWgg0Dp0wux5lJOn26p.bat
| MD5 | e9cd2d5648ebb737cc9be7dbdf969056 |
| SHA1 | 3e34a5cd97ed60e282301025ddca974614d74c5a |
| SHA256 | a154e1f761b72ef3fa982881229ac2ee7d9d358285ee241c911fde570f376bbe |
| SHA512 | e61b01bc01ffea738d9e4c7afd400fe815c46ee16223fdb9971b843d55e509b6529cbc0f0d36906b3d12ffc8124ad940499ab318573309bb624544e7bd17ad17 |
C:\Chainserverhostnetcommon\sessionbrokerHost.exe
| MD5 | f889fcff1de0857b351474a2e794b7ca |
| SHA1 | c5c9be94d9bf74a382d01374a869b2c34f7179ac |
| SHA256 | 48b84c11bf2ccfe73802565024f5abc589b9bef4c0aece8439baee4f260112e0 |
| SHA512 | 1d2bad15de6c57f699a81a13288be968bc0638b7629d741b795b07f608a0d8928d92da5f76d121ea0ed95fbc13c5ece7403fe8accb1aa870acda6414e7b6a561 |
memory/2448-12-0x00007FF90DA23000-0x00007FF90DA25000-memory.dmp
memory/2448-13-0x00000000007F0000-0x00000000008DE000-memory.dmp
memory/2448-14-0x00000000010A0000-0x00000000010A8000-memory.dmp
memory/2448-15-0x0000000002AB0000-0x0000000002ABA000-memory.dmp
memory/2448-16-0x0000000002B10000-0x0000000002B1C000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\VI0zTzLboc.bat
| MD5 | 938578a8973f8bdee79eee6be7561d4b |
| SHA1 | 9ff2e9392ded332565383450e2804075bf3dd708 |
| SHA256 | 2822d6a4208cd45f7b6d7f1a6b6f5161a63762631060a8c29deaecd56075aeef |
| SHA512 | 391d043b1be59c4ae4be4d9ea760673970d69833ca0783b98dff6b6729d0c6bc8491b3089a96575224a61da974d883ff3d01ad92ebaabb2546e7fde01fbd539d |