Analysis Overview
SHA256
d07d79bfaecfaad730b473aedbedd0b1c49b5361f74aab3a79c7a37c623527eb
Threat Level: Known bad
The file DCRatBuild.exe was found to be: Known bad.
Malicious Activity Summary
Dcrat family
Process spawned unexpected child process
DcRat
DCRat payload
UAC bypass
DCRat payload
Disables Task Manager via registry modification
Executes dropped EXE
Reads user/profile data of web browsers
Checks computer location settings
Loads dropped DLL
Checks whether UAC is enabled
Enumerates connected drives
Drops file in Program Files directory
Drops file in Windows directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
System policy modification
Uses Task Scheduler COM API
Suspicious behavior: EnumeratesProcesses
Checks processor information in registry
Modifies registry key
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
Scheduled Task/Job: Scheduled Task
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-21 01:07
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
2024-06-21 01:07
Reported
2024-06-21 01:18
Platform
win7-20240611-en
Max time kernel
600s
Max time network
600s
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 |
UAC bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Windows\es-ES\explorer.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Windows\es-ES\explorer.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\Windows\es-ES\explorer.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 |
| 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:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| N/A | N/A | C:\Windows\es-ES\explorer.exe | N/A |
| N/A | N/A | C:\Recovery\fc26e022-289f-11ef-a973-46d84c032646\services.exe | N/A |
| N/A | N/A | C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\csrss.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
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Windows\es-ES\explorer.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Windows\es-ES\explorer.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\F: | C:\Windows\System32\perfmon.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\Windows Media Player\Icons\cmd.exe | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\debug\886983d96e3d3e | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| File created | C:\Windows\es-ES\explorer.exe | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| File created | C:\Windows\es-ES\7a0fd90576e088 | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| File created | C:\Windows\CSC\v2.0.6\lsm.exe | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| File created | C:\Windows\debug\csrss.exe | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| File opened for modification | C:\Windows\debug\csrss.exe | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
Enumerates physical storage devices
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\System32\perfmon.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\System32\perfmon.exe | N/A |
Modifies registry key
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\reg.exe | N/A |
Scheduled Task/Job: Scheduled Task
| 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 |
| 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 |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\perfmon.exe | N/A |
| N/A | N/A | C:\Windows\es-ES\explorer.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\es-ES\explorer.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\perfmon.exe | N/A |
| Token: SeSystemProfilePrivilege | N/A | C:\Windows\System32\perfmon.exe | N/A |
| Token: SeCreateGlobalPrivilege | N/A | C:\Windows\System32\perfmon.exe | N/A |
| Token: 33 | N/A | C:\Windows\System32\perfmon.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\System32\perfmon.exe | N/A |
| Token: 33 | N/A | C:\Windows\system32\AUDIODG.EXE | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\system32\AUDIODG.EXE | N/A |
| Token: 33 | N/A | C:\Windows\system32\AUDIODG.EXE | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\system32\AUDIODG.EXE | N/A |
| Token: SeDebugPrivilege | N/A | C:\Recovery\fc26e022-289f-11ef-a973-46d84c032646\services.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\csrss.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:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Windows\es-ES\explorer.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\Windows\es-ES\explorer.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\Windows\es-ES\explorer.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe
"C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\PortFontMonitornetcommon\l8BmlyiJVw1zyyh.vbe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\PortFontMonitornetcommon\WdaIp4pfENVLh3Iemy6UjaXhu.bat" "
C:\PortFontMonitornetcommon\BrokerSvc.exe
"C:\PortFontMonitornetcommon\BrokerSvc.exe"
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Windows\debug\csrss.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\debug\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Windows\debug\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 7 /tr "'C:\Windows\es-ES\explorer.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Windows\es-ES\explorer.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\Windows\es-ES\explorer.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 10 /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\csrss.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\csrss.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 10 /tr "'C:\Recovery\fc26e022-289f-11ef-a973-46d84c032646\services.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Recovery\fc26e022-289f-11ef-a973-46d84c032646\services.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "servicess" /sc MINUTE /mo 6 /tr "'C:\Recovery\fc26e022-289f-11ef-a973-46d84c032646\services.exe'" /rl HIGHEST /f
C:\Windows\es-ES\explorer.exe
"C:\Windows\es-ES\explorer.exe"
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\resmon.exe
"C:\Windows\system32\resmon.exe"
C:\Windows\System32\perfmon.exe
"C:\Windows\System32\perfmon.exe" /res
C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x594
C:\Windows\system32\taskeng.exe
taskeng.exe {E2411835-5D54-4D74-9591-D65514FE3259} S-1-5-21-2812790648-3157963462-487717889-1000:JAFTUVRJ\Admin:Interactive:[1]
C:\Recovery\fc26e022-289f-11ef-a973-46d84c032646\services.exe
C:\Recovery\fc26e022-289f-11ef-a973-46d84c032646\services.exe
C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\csrss.exe
"C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\csrss.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | a0990484.xsph.ru | udp |
| RU | 141.8.192.103:80 | a0990484.xsph.ru | tcp |
| RU | 141.8.192.103:80 | a0990484.xsph.ru | tcp |
| US | 8.8.8.8:53 | 1.0.127.10.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.192.8.141.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 252.0.0.224.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa | udp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa | udp |
| RU | 141.8.192.103:80 | a0990484.xsph.ru | tcp |
| US | 8.8.8.8:53 | 255.255.127.10.in-addr.arpa | udp |
| RU | 141.8.192.103:80 | a0990484.xsph.ru | tcp |
Files
C:\PortFontMonitornetcommon\l8BmlyiJVw1zyyh.vbe
| MD5 | e2723c4480fd7a7a5d8c46cb7bd7010e |
| SHA1 | 8ece7fa1a4cc39d5d439c13c8670c416ce4da987 |
| SHA256 | 8064029eab99ac1caed8414e03b5e7c981de56a6fcb7bdce3aa3b3438f430a2b |
| SHA512 | 8ad0e2d16feaf91c9fc016b048721819d0b0ee5b4802371e5317b1b27ff7368fddd8ad6179de024c478d61fba3273727a3d94a59faef36a3b1cd2cdab32f6c51 |
C:\PortFontMonitornetcommon\WdaIp4pfENVLh3Iemy6UjaXhu.bat
| MD5 | e09688b8cdb47414e341937de481c43d |
| SHA1 | e799a6166c872f085d62a5ea580b0798be36835d |
| SHA256 | 949721b3bf385d01afc6b13e3c3ad7f37d87d29c49f243e2d59d4152925ee31b |
| SHA512 | c6a2aa753e0feaf0549cd22ace526a81c219b1b5513bb8a83154d6adeeb3db0536a4c0f0a9cb14373934ce400f8ed4681046e53bd175da5be10c0b7548690017 |
C:\PortFontMonitornetcommon\BrokerSvc.exe
| MD5 | fc27116ce1b57a71d7d201e9aae86b01 |
| SHA1 | ff047b7c918d9ff388b5c4928bfad5dcc818f1d4 |
| SHA256 | 121d462ca9f33798e076d069ec6b84c5ae0573bbaac8df8dd78efbb7041bd30b |
| SHA512 | 25747516de2d99e6193fc920435ececf1b7ddb8990487d26d03cf6179b7dab0f5172c0dfa5d4db4a29028c00c12a9fb266bc14d6920e864d6a3934af7748618b |
memory/2700-13-0x0000000000CE0000-0x0000000000F5A000-memory.dmp
memory/2700-14-0x00000000001C0000-0x00000000001CE000-memory.dmp
memory/2700-15-0x00000000001D0000-0x00000000001EC000-memory.dmp
memory/2700-16-0x0000000000460000-0x0000000000468000-memory.dmp
memory/2700-17-0x0000000000480000-0x000000000048A000-memory.dmp
memory/2700-18-0x0000000000490000-0x00000000004E6000-memory.dmp
memory/2700-19-0x00000000004E0000-0x00000000004EC000-memory.dmp
memory/2700-20-0x00000000004F0000-0x00000000004F8000-memory.dmp
memory/2700-21-0x0000000000510000-0x000000000051C000-memory.dmp
memory/2700-22-0x0000000000520000-0x000000000052C000-memory.dmp
memory/2700-23-0x0000000000AD0000-0x0000000000ADC000-memory.dmp
memory/2700-24-0x0000000000AE0000-0x0000000000AEE000-memory.dmp
memory/2700-25-0x0000000000AF0000-0x0000000000AFC000-memory.dmp
memory/2700-26-0x0000000000B00000-0x0000000000B0C000-memory.dmp
memory/796-41-0x0000000000E90000-0x000000000110A000-memory.dmp
memory/2396-65-0x0000000140000000-0x00000001405E8000-memory.dmp
memory/2396-66-0x0000000140000000-0x00000001405E8000-memory.dmp
memory/2396-67-0x0000000140000000-0x00000001405E8000-memory.dmp
memory/2392-71-0x0000000000200000-0x000000000047A000-memory.dmp
memory/2600-74-0x0000000000970000-0x0000000000BEA000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-21 01:07
Reported
2024-06-21 01:18
Platform
win10v2004-20240611-en
Max time kernel
600s
Max time network
598s
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 |
UAC bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\PortFontMonitornetcommon\backgroundTaskHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\PortFontMonitornetcommon\backgroundTaskHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\PortFontMonitornetcommon\backgroundTaskHost.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 |
Disables Task Manager via registry modification
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\WScript.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| N/A | N/A | C:\PortFontMonitornetcommon\backgroundTaskHost.exe | N/A |
| N/A | N/A | C:\Windows\Sun\Java\Deployment\conhost.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\taskhostw.exe | N/A |
Reads user/profile data of web browsers
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\PortFontMonitornetcommon\backgroundTaskHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\PortFontMonitornetcommon\backgroundTaskHost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\Windows Sidebar\Gadgets\SppExtComObj.exe | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| File opened for modification | C:\Program Files\Windows Sidebar\Gadgets\SppExtComObj.exe | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| File created | C:\Program Files\Windows Sidebar\Gadgets\e1ef82546f0b02 | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| File created | C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\taskhostw.exe | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| File created | C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\ea9f0e6c9e2dcd | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Sun\Java\Deployment\conhost.exe | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| File created | C:\Windows\Sun\Java\Deployment\088424020bedd6 | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000_Classes\Local Settings | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
Modifies registry key
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\reg.exe | N/A |
Scheduled Task/Job: Scheduled Task
| 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 |
| 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 |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\PortFontMonitornetcommon\backgroundTaskHost.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\PortFontMonitornetcommon\backgroundTaskHost.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\Sun\Java\Deployment\conhost.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\taskhostw.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\ConsentPromptBehaviorAdmin = "0" | C:\PortFontMonitornetcommon\backgroundTaskHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\PortFontMonitornetcommon\backgroundTaskHost.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" | C:\PortFontMonitornetcommon\BrokerSvc.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\PortFontMonitornetcommon\backgroundTaskHost.exe | N/A |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe
"C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\PortFontMonitornetcommon\l8BmlyiJVw1zyyh.vbe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\PortFontMonitornetcommon\WdaIp4pfENVLh3Iemy6UjaXhu.bat" "
C:\PortFontMonitornetcommon\BrokerSvc.exe
"C:\PortFontMonitornetcommon\BrokerSvc.exe"
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Sidebar\Gadgets\SppExtComObj.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\Gadgets\SppExtComObj.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows Sidebar\Gadgets\SppExtComObj.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 8 /tr "'C:\Windows\Sun\Java\Deployment\conhost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Windows\Sun\Java\Deployment\conhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 5 /tr "'C:\Windows\Sun\Java\Deployment\conhost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 9 /tr "'C:\PortFontMonitornetcommon\backgroundTaskHost.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\PortFontMonitornetcommon\backgroundTaskHost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 10 /tr "'C:\PortFontMonitornetcommon\backgroundTaskHost.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\taskhostw.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\taskhostw.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\taskhostw.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TrustedInstallerT" /sc MINUTE /mo 13 /tr "'C:\Users\Public\Documents\My Videos\TrustedInstaller.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TrustedInstaller" /sc ONLOGON /tr "'C:\Users\Public\Documents\My Videos\TrustedInstaller.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "TrustedInstallerT" /sc MINUTE /mo 10 /tr "'C:\Users\Public\Documents\My Videos\TrustedInstaller.exe'" /rl HIGHEST /f
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\w3ky7Mcri9.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:\PortFontMonitornetcommon\backgroundTaskHost.exe
"C:\PortFontMonitornetcommon\backgroundTaskHost.exe"
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
C:\Windows\Sun\Java\Deployment\conhost.exe
C:\Windows\Sun\Java\Deployment\conhost.exe
C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\taskhostw.exe
"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\taskhostw.exe"
Network
| Country | Destination | Domain | Proto |
| 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 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | a0990484.xsph.ru | udp |
| RU | 141.8.192.103:80 | a0990484.xsph.ru | tcp |
| RU | 141.8.192.103:80 | a0990484.xsph.ru | tcp |
| US | 8.8.8.8:53 | 103.192.8.141.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 10.28.171.150.in-addr.arpa | udp |
| RU | 141.8.192.103:80 | a0990484.xsph.ru | tcp |
| US | 8.8.8.8:53 | 18.173.189.20.in-addr.arpa | udp |
| RU | 141.8.192.103:80 | a0990484.xsph.ru | tcp |
Files
C:\PortFontMonitornetcommon\l8BmlyiJVw1zyyh.vbe
| MD5 | e2723c4480fd7a7a5d8c46cb7bd7010e |
| SHA1 | 8ece7fa1a4cc39d5d439c13c8670c416ce4da987 |
| SHA256 | 8064029eab99ac1caed8414e03b5e7c981de56a6fcb7bdce3aa3b3438f430a2b |
| SHA512 | 8ad0e2d16feaf91c9fc016b048721819d0b0ee5b4802371e5317b1b27ff7368fddd8ad6179de024c478d61fba3273727a3d94a59faef36a3b1cd2cdab32f6c51 |
C:\PortFontMonitornetcommon\WdaIp4pfENVLh3Iemy6UjaXhu.bat
| MD5 | e09688b8cdb47414e341937de481c43d |
| SHA1 | e799a6166c872f085d62a5ea580b0798be36835d |
| SHA256 | 949721b3bf385d01afc6b13e3c3ad7f37d87d29c49f243e2d59d4152925ee31b |
| SHA512 | c6a2aa753e0feaf0549cd22ace526a81c219b1b5513bb8a83154d6adeeb3db0536a4c0f0a9cb14373934ce400f8ed4681046e53bd175da5be10c0b7548690017 |
C:\PortFontMonitornetcommon\BrokerSvc.exe
| MD5 | fc27116ce1b57a71d7d201e9aae86b01 |
| SHA1 | ff047b7c918d9ff388b5c4928bfad5dcc818f1d4 |
| SHA256 | 121d462ca9f33798e076d069ec6b84c5ae0573bbaac8df8dd78efbb7041bd30b |
| SHA512 | 25747516de2d99e6193fc920435ececf1b7ddb8990487d26d03cf6179b7dab0f5172c0dfa5d4db4a29028c00c12a9fb266bc14d6920e864d6a3934af7748618b |
memory/840-12-0x00007FF8D8EC3000-0x00007FF8D8EC5000-memory.dmp
memory/840-13-0x0000000000920000-0x0000000000B9A000-memory.dmp
memory/840-14-0x000000001B7A0000-0x000000001B7AE000-memory.dmp
memory/840-15-0x000000001B7B0000-0x000000001B7CC000-memory.dmp
memory/840-16-0x000000001BD30000-0x000000001BD80000-memory.dmp
memory/840-18-0x000000001BCF0000-0x000000001BCFA000-memory.dmp
memory/840-17-0x000000001BCE0000-0x000000001BCE8000-memory.dmp
memory/840-19-0x000000001BD80000-0x000000001BDD6000-memory.dmp
memory/840-20-0x000000001BD00000-0x000000001BD0C000-memory.dmp
memory/840-21-0x000000001BD10000-0x000000001BD18000-memory.dmp
memory/840-22-0x000000001BD20000-0x000000001BD2C000-memory.dmp
memory/840-23-0x000000001BDD0000-0x000000001BDDC000-memory.dmp
memory/840-24-0x000000001C150000-0x000000001C15C000-memory.dmp
memory/840-25-0x000000001BFE0000-0x000000001BFEE000-memory.dmp
memory/840-26-0x000000001BFF0000-0x000000001BFFC000-memory.dmp
memory/840-27-0x000000001C000000-0x000000001C00C000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\w3ky7Mcri9.bat
| MD5 | 0971871ced868145f38160c1a5df6519 |
| SHA1 | 981499b94a98f506f36c773209c64c1dbbc5728b |
| SHA256 | 6dea0dd9907223d82c52957047978c15fa5df167aafccd0b9c057fd2043e3b5a |
| SHA512 | 6f9db2696a197ee0d0d046ece1d469a4ba8c760db9cd781d1e2bc3ae88c6021423cc2b060d985e7273cb515dba0006582f1f9ded591b8633f51f182682dc0d9c |
memory/1848-47-0x000000001C200000-0x000000001C256000-memory.dmp
memory/1848-48-0x000000001D370000-0x000000001D532000-memory.dmp