darkcomet | f593910c588856c47056520d2edf93ebd4bd9ae9c68205d657aac26276d65e82

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06/12/2024, 23:16

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General

Target
cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Size 756KB
Sample241206-29ccgasrdv
SHA256 f593910c588856c47056520d2edf93ebd4bd9ae9c68205d657aac26276d65e82
MD5 cf87d7e808faec9cfd1d2dc39a80d634
SHA1 43aa7194671f56326b06df68662994e8c5b2901e
SHA512 cb6b840b6b3896133f0a0dda6ee836cab7b9f8ab7e790853340e079db7800636a55285b05701f9c4cc8d68db38d40a8c78c2d28566b5395a767706a1d20b66c4
SSDEEP 12288:C9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hdrzm:uZ1xuVVjfFoynPaVBUR8f+kN10EB3zm
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet farcry 3 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

farcry 3

127.0.0.1:1604
stalker91.no-ip.org:1604

Mutex

DC_MUTEX-E9CMGU0

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
tXYkPC1ntx3C
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	msdcsc.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1432	notepad.exe

Executes dropped EXE 1 IoCs

pid	Process
224	msdcsc.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeSecurityPrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeBackupPrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeRestorePrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeShutdownPrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeDebugPrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeUndockPrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: 33	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: 34	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: 35	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: 36	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	224	msdcsc.exe
Token: SeSecurityPrivilege	224	msdcsc.exe
Token: SeTakeOwnershipPrivilege	224	msdcsc.exe
Token: SeLoadDriverPrivilege	224	msdcsc.exe
Token: SeSystemProfilePrivilege	224	msdcsc.exe
Token: SeSystemtimePrivilege	224	msdcsc.exe
Token: SeProfSingleProcessPrivilege	224	msdcsc.exe
Token: SeIncBasePriorityPrivilege	224	msdcsc.exe
Token: SeCreatePagefilePrivilege	224	msdcsc.exe
Token: SeBackupPrivilege	224	msdcsc.exe
Token: SeRestorePrivilege	224	msdcsc.exe
Token: SeShutdownPrivilege	224	msdcsc.exe
Token: SeDebugPrivilege	224	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	224	msdcsc.exe
Token: SeChangeNotifyPrivilege	224	msdcsc.exe
Token: SeRemoteShutdownPrivilege	224	msdcsc.exe
Token: SeUndockPrivilege	224	msdcsc.exe
Token: SeManageVolumePrivilege	224	msdcsc.exe
Token: SeImpersonatePrivilege	224	msdcsc.exe
Token: SeCreateGlobalPrivilege	224	msdcsc.exe
Token: 33	224	msdcsc.exe
Token: 34	224	msdcsc.exe
Token: 35	224	msdcsc.exe
Token: 36	224	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
224	msdcsc.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 1432	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	84
PID 1520 wrote to memory of 224	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	85
PID 1520 wrote to memory of 224	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	85
PID 1520 wrote to memory of 224	1520	cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe	85

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	msdcsc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cf87d7e808faec9cfd1d2dc39a80d634_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1520
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1432
- C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
  "C:\Windows\system32\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies security service
  - Windows security bypass
  - Executes dropped EXE
  - Windows security modification
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - System policy modification
  PID:224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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msdcsc.exe

Path C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
Size 756KB
SHA256 f593910c588856c47056520d2edf93ebd4bd9ae9c68205d657aac26276d65e82
MD5 cf87d7e808faec9cfd1d2dc39a80d634
SHA1 43aa7194671f56326b06df68662994e8c5b2901e
SHA512 cb6b840b6b3896133f0a0dda6ee836cab7b9f8ab7e790853340e079db7800636a55285b05701f9c4cc8d68db38d40a8c78c2d28566b5395a767706a1d20b66c4
SSDEEP 12288:C9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hdrzm:uZ1xuVVjfFoynPaVBUR8f+kN10EB3zm
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/224-63-0x0000000002180000-0x0000000002181000-memory.dmp

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memory/224-67-0x0000000002180000-0x0000000002181000-memory.dmp

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memory/224-66-0x0000000000400000-0x00000000004CA000-memory.dmp

Download

memory/224-68-0x0000000000400000-0x00000000004CA000-memory.dmp

Download

memory/1432-4-0x0000000000DF0000-0x0000000000DF1000-memory.dmp

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memory/1520-0-0x0000000002390000-0x0000000002391000-memory.dmp

Download

memory/1520-64-0x0000000000400000-0x00000000004CA000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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