Analysis Overview
SHA256
16015088c3352a8257f420555e7ce6245aa0e6682deeca79bf7e08c24e1ac3de
Threat Level: Known bad
The file nursultan nexgen fix.exe was found to be: Known bad.
Malicious Activity Summary
DcRat
DCRat payload
Dcrat family
Process spawned unexpected child process
DCRat payload
Disables Task Manager via registry modification
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Drops file in Windows directory
Drops file in Program Files directory
Enumerates physical storage devices
Unsigned PE
Suspicious behavior: GetForegroundWindowSpam
Modifies registry class
Uses Task Scheduler COM API
Suspicious behavior: EnumeratesProcesses
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Modifies registry key
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-31 15:44
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
2024-05-31 15:44
Reported
2024-05-31 15:48
Platform
win7-20240508-en
Max time kernel
146s
Max time network
152s
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 |
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 |
Disables Task Manager via registry modification
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\explorer.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 |
Reads user/profile data of web browsers
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\Microsoft.NET\lsm.exe | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft.NET\101b941d020240 | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Program Files (x86)\Windows NT\TableTextService\de-DE\c5b4cb5e9653cc | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Program Files\Microsoft Games\Containerruntime.exe | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Program Files\Microsoft Games\67c2f4240f387c | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Program Files\Reference Assemblies\Microsoft\cmd.exe | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Microsoft.NET\lsm.exe | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Program Files (x86)\Windows NT\TableTextService\de-DE\services.exe | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft Office\MEDIA\CAGCAT10\1033\lsm.exe | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Program Files (x86)\Microsoft Office\MEDIA\CAGCAT10\1033\101b941d020240 | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Program Files\Reference Assemblies\Microsoft\ebf1f9fa8afd6d | C:\portagentbrowserweb\Containerruntime.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\fr-FR\explorer.exe | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Windows\fr-FR\7a0fd90576e088 | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Windows\tracing\Idle.exe | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Windows\tracing\6ccacd8608530f | C:\portagentbrowserweb\Containerruntime.exe | N/A |
Enumerates physical storage devices
Creates scheduled task(s)
Modifies registry key
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\reg.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
| N/A | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\portagentbrowserweb\explorer.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\nursultan nexgen fix.exe
"C:\Users\Admin\AppData\Local\Temp\nursultan nexgen fix.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\portagentbrowserweb\WRLLAAz5wgYRSh1EMNi6f5aM.vbe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\portagentbrowserweb\6X9rFgrS3wv5iM7PLkmLFP1j.bat" "
C:\portagentbrowserweb\Containerruntime.exe
"C:\portagentbrowserweb\Containerruntime.exe"
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Microsoft.NET\lsm.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft.NET\lsm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Microsoft.NET\lsm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Recovery\96702242-0d98-11ef-bfa8-5aba25856535\csrss.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Recovery\96702242-0d98-11ef-bfa8-5aba25856535\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\Recovery\96702242-0d98-11ef-bfa8-5aba25856535\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows NT\TableTextService\de-DE\services.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\TableTextService\de-DE\services.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows NT\TableTextService\de-DE\services.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\wininit.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\wininit.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\wininit.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\portagentbrowserweb\csrss.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\portagentbrowserweb\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 10 /tr "'C:\portagentbrowserweb\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 10 /tr "'C:\portagentbrowserweb\wininit.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\portagentbrowserweb\wininit.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 12 /tr "'C:\portagentbrowserweb\wininit.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "ContainerruntimeC" /sc MINUTE /mo 6 /tr "'C:\Program Files\Microsoft Games\Containerruntime.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Containerruntime" /sc ONLOGON /tr "'C:\Program Files\Microsoft Games\Containerruntime.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "ContainerruntimeC" /sc MINUTE /mo 10 /tr "'C:\Program Files\Microsoft Games\Containerruntime.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Windows\tracing\Idle.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Windows\tracing\Idle.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Windows\tracing\Idle.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 7 /tr "'C:\Windows\fr-FR\explorer.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Windows\fr-FR\explorer.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 11 /tr "'C:\Windows\fr-FR\explorer.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Users\Default\Desktop\csrss.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\Default\Desktop\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Users\Default\Desktop\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Microsoft Office\MEDIA\CAGCAT10\1033\lsm.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Office\MEDIA\CAGCAT10\1033\lsm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Microsoft Office\MEDIA\CAGCAT10\1033\lsm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 14 /tr "'C:\portagentbrowserweb\lsm.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\portagentbrowserweb\lsm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsml" /sc MINUTE /mo 10 /tr "'C:\portagentbrowserweb\lsm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\portagentbrowserweb\explorer.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\portagentbrowserweb\explorer.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 9 /tr "'C:\portagentbrowserweb\explorer.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 9 /tr "'C:\Program Files\Reference Assemblies\Microsoft\cmd.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\Program Files\Reference Assemblies\Microsoft\cmd.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 9 /tr "'C:\Program Files\Reference Assemblies\Microsoft\cmd.exe'" /rl HIGHEST /f
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\wFtC02oQlx.bat"
C:\Windows\SysWOW64\reg.exe
reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
C:\Windows\system32\w32tm.exe
w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
C:\portagentbrowserweb\explorer.exe
"C:\portagentbrowserweb\explorer.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | a0987415.xsph.ru | udp |
| RU | 141.8.192.26:80 | a0987415.xsph.ru | tcp |
| RU | 141.8.192.26:80 | a0987415.xsph.ru | tcp |
| RU | 141.8.192.26:80 | a0987415.xsph.ru | tcp |
| RU | 141.8.192.26:80 | a0987415.xsph.ru | tcp |
| RU | 141.8.192.26:80 | a0987415.xsph.ru | tcp |
Files
C:\portagentbrowserweb\WRLLAAz5wgYRSh1EMNi6f5aM.vbe
| MD5 | 61a07f2f9e8e9b1f5175b2d60c3e3f18 |
| SHA1 | e695b0c2b43c786453bf3f6ae504f0626951d281 |
| SHA256 | 5c75708ec9e4fe419a2fd1067bd5793bacb28140177cc6b36300fbf28e7c23d1 |
| SHA512 | 8ef3529f6bf504224e7803019f1e162aead7961bc1a5115f50fb5f580570e8b04707da21a7aab4eb7f1554a3b5333597fb3335e5f6a74dabfdb0583eecb35b5d |
C:\portagentbrowserweb\6X9rFgrS3wv5iM7PLkmLFP1j.bat
| MD5 | c8f8a078dace2ff4cb106803c9199643 |
| SHA1 | a5029ff4c4f0f24b0fbe2951c9a8002501ebd3b5 |
| SHA256 | 1b99d39fa273f33b072c67e0df7d33b1699fa17b7c7139467a658302a5ed0e0d |
| SHA512 | efaea3b4653768bbd135a0ec55319df2464f1d440ad982f31a5eff05c5ba5032f4718683ff6419c668bf1f34a117b5a101f56d1efc1d74ad93e692c52686f999 |
\portagentbrowserweb\Containerruntime.exe
| MD5 | 5887a563351ca99247b7e2c448bd9f2e |
| SHA1 | b24695e88143863297535989900bb7521ea86d67 |
| SHA256 | e74cbd74c838db604926e27322342c02f803b95f98680d4089b5c01ed93fb390 |
| SHA512 | b7d82bd09ba64891b75bbb9356de74a1ed0835709a391698c1301825777418f57e4f2ae3c260d3f7b6ada05d0e7ddeb4a6b75901fdf53bdd82ffa2febb685107 |
memory/2588-13-0x0000000000B80000-0x0000000000CB2000-memory.dmp
memory/2588-14-0x0000000000140000-0x000000000015C000-memory.dmp
memory/2588-15-0x0000000000170000-0x0000000000186000-memory.dmp
memory/2588-16-0x0000000000390000-0x000000000039C000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\wFtC02oQlx.bat
| MD5 | 8b81766a1290c9fb10124e384e89402c |
| SHA1 | 965ff4e53d4351ff1bc25243b8517072ea9ea4fa |
| SHA256 | aa1cd52a179f71cca08c574b75bdc31e8f75d8cdeb9a327669341810845a62a1 |
| SHA512 | 9bf3136ff4ac1f38c4410179aa246f172199f235583ed20e92962d6adfe53f62658432a4e761c886388b806b552e59391174b045e499394c060f73fdea3dfdd5 |
memory/2084-52-0x0000000000140000-0x0000000000272000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-31 15:44
Reported
2024-05-31 15:48
Platform
win10v2004-20240508-en
Max time kernel
149s
Max time network
151s
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 |
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Disables Task Manager via registry modification
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\nursultan nexgen fix.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\WScript.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| N/A | N/A | C:\Windows\Performance\WinSAT\sihost.exe | N/A |
Reads user/profile data of web browsers
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\Windows Media Player\Skins\backgroundTaskHost.exe | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File opened for modification | C:\Program Files\Windows Media Player\Skins\backgroundTaskHost.exe | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Program Files\Windows Media Player\Skins\eddb19405b7ce1 | C:\portagentbrowserweb\Containerruntime.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\PLA\Templates\spoolsv.exe | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Windows\PLA\Templates\f3b6ecef712a24 | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Windows\Performance\WinSAT\sihost.exe | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| File created | C:\Windows\Performance\WinSAT\66fc9ff0ee96c2 | C:\portagentbrowserweb\Containerruntime.exe | N/A |
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\nursultan nexgen fix.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000_Classes\Local Settings | C:\portagentbrowserweb\Containerruntime.exe | N/A |
Modifies registry key
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\reg.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Performance\WinSAT\sihost.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\portagentbrowserweb\Containerruntime.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\Performance\WinSAT\sihost.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\nursultan nexgen fix.exe
"C:\Users\Admin\AppData\Local\Temp\nursultan nexgen fix.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\portagentbrowserweb\WRLLAAz5wgYRSh1EMNi6f5aM.vbe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\portagentbrowserweb\6X9rFgrS3wv5iM7PLkmLFP1j.bat" "
C:\portagentbrowserweb\Containerruntime.exe
"C:\portagentbrowserweb\Containerruntime.exe"
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Media Player\Skins\backgroundTaskHost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Program Files\Windows Media Player\Skins\backgroundTaskHost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Media Player\Skins\backgroundTaskHost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 10 /tr "'C:\Windows\PLA\Templates\spoolsv.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\PLA\Templates\spoolsv.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 7 /tr "'C:\Windows\PLA\Templates\spoolsv.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 7 /tr "'C:\Windows\Performance\WinSAT\sihost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Windows\Performance\WinSAT\sihost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 6 /tr "'C:\Windows\Performance\WinSAT\sihost.exe'" /rl HIGHEST /f
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\UstXbKLwhf.bat"
C:\Windows\SysWOW64\reg.exe
reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
C:\Windows\system32\w32tm.exe
w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
C:\Windows\Performance\WinSAT\sihost.exe
"C:\Windows\Performance\WinSAT\sihost.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.32.126.40.in-addr.arpa | udp |
| NL | 23.62.61.129:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 129.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | a0987415.xsph.ru | udp |
| RU | 141.8.192.26:80 | a0987415.xsph.ru | tcp |
| RU | 141.8.192.26:80 | a0987415.xsph.ru | tcp |
| US | 8.8.8.8:53 | 26.192.8.141.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | udp |
| RU | 141.8.192.26:80 | a0987415.xsph.ru | tcp |
| US | 8.8.8.8:53 | 203.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| RU | 141.8.192.26:80 | a0987415.xsph.ru | tcp |
| RU | 141.8.192.26:80 | a0987415.xsph.ru | tcp |
| US | 8.8.8.8:53 | 210.143.182.52.in-addr.arpa | udp |
Files
C:\portagentbrowserweb\WRLLAAz5wgYRSh1EMNi6f5aM.vbe
| MD5 | 61a07f2f9e8e9b1f5175b2d60c3e3f18 |
| SHA1 | e695b0c2b43c786453bf3f6ae504f0626951d281 |
| SHA256 | 5c75708ec9e4fe419a2fd1067bd5793bacb28140177cc6b36300fbf28e7c23d1 |
| SHA512 | 8ef3529f6bf504224e7803019f1e162aead7961bc1a5115f50fb5f580570e8b04707da21a7aab4eb7f1554a3b5333597fb3335e5f6a74dabfdb0583eecb35b5d |
C:\portagentbrowserweb\6X9rFgrS3wv5iM7PLkmLFP1j.bat
| MD5 | c8f8a078dace2ff4cb106803c9199643 |
| SHA1 | a5029ff4c4f0f24b0fbe2951c9a8002501ebd3b5 |
| SHA256 | 1b99d39fa273f33b072c67e0df7d33b1699fa17b7c7139467a658302a5ed0e0d |
| SHA512 | efaea3b4653768bbd135a0ec55319df2464f1d440ad982f31a5eff05c5ba5032f4718683ff6419c668bf1f34a117b5a101f56d1efc1d74ad93e692c52686f999 |
C:\portagentbrowserweb\Containerruntime.exe
| MD5 | 5887a563351ca99247b7e2c448bd9f2e |
| SHA1 | b24695e88143863297535989900bb7521ea86d67 |
| SHA256 | e74cbd74c838db604926e27322342c02f803b95f98680d4089b5c01ed93fb390 |
| SHA512 | b7d82bd09ba64891b75bbb9356de74a1ed0835709a391698c1301825777418f57e4f2ae3c260d3f7b6ada05d0e7ddeb4a6b75901fdf53bdd82ffa2febb685107 |
memory/4992-12-0x00007FFE2F123000-0x00007FFE2F125000-memory.dmp
memory/4992-13-0x0000000000730000-0x0000000000862000-memory.dmp
memory/4992-14-0x000000001B990000-0x000000001B9AC000-memory.dmp
memory/4992-15-0x000000001BB20000-0x000000001BB70000-memory.dmp
memory/4992-16-0x000000001B9B0000-0x000000001B9C6000-memory.dmp
memory/4992-17-0x000000001B360000-0x000000001B36C000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\UstXbKLwhf.bat
| MD5 | 52d2326db74c265be1a3a99fce1f38e5 |
| SHA1 | 6322c49fa6ea721fd47ce2b14c4300db59e37c0d |
| SHA256 | c9c12c0c5ecdcc7da708f4453684e117d296e30ceb00d806c9bce5f078f590f9 |
| SHA512 | 60890e4b777247acde03ae1f018c7b1436e00235b9bcb5ad78dab84967cfac952a24e01de4ef9145dde2408ddd981d966d0bc7f5060052921621dcf6c745d49a |