darkcomet | 1b81e1de7d4ea677467c6cd508b4f6ef434e3564f2e9ed4b96924003781ecdf8

Analysis

max time kernel
140s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
06/02/2025, 12:47

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General

Target

JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe
Size

827KB
MD5

ab5823c24ebc82c7968b4f4b851a446e
SHA1

06037ae9261abad494b06cba6b0d1a47a04bcf5e
SHA256

1b81e1de7d4ea677467c6cd508b4f6ef434e3564f2e9ed4b96924003781ecdf8
SHA512

262b2795a21c8578822849df003293ad789b0f7bd9feea12b6257305e78329069e490267df4d1c32f6d61a5b5359df00f1f777f1edd95b1238eea7dff3de459a
SSDEEP

12288:Fvie/rDRJBaG0AM9kAdEVm1UqFLeigl/eDv3msY11YdzS0lFjbEJ45PXKm:FDDl3nM9k+EVOUqWsYzYRbEEPXKm

Score

10^/10

darkcomet defense_evasion discovery persistence rat trojan

Malware Config

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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	svchost.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
4536	attrib.exe
2436	attrib.exe

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-1-5-21-2211717155-842865201-3404093980-1000\Control Panel\International\Geo\Nation	svchost.exe

Executes dropped EXE 2 IoCs

pid	Process
1168	svchost.exe
1172	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-1-5-21-2211717155-842865201-3404093980-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Users\\Admin\\AppData\\Local\\Temp\\njYsi.exe"	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2211717155-842865201-3404093980-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1420 set thread context of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84

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 7 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe
Token: SeIncreaseQuotaPrivilege	1168	svchost.exe
Token: SeSecurityPrivilege	1168	svchost.exe
Token: SeTakeOwnershipPrivilege	1168	svchost.exe
Token: SeLoadDriverPrivilege	1168	svchost.exe
Token: SeSystemProfilePrivilege	1168	svchost.exe
Token: SeSystemtimePrivilege	1168	svchost.exe
Token: SeProfSingleProcessPrivilege	1168	svchost.exe
Token: SeIncBasePriorityPrivilege	1168	svchost.exe
Token: SeCreatePagefilePrivilege	1168	svchost.exe
Token: SeBackupPrivilege	1168	svchost.exe
Token: SeRestorePrivilege	1168	svchost.exe
Token: SeShutdownPrivilege	1168	svchost.exe
Token: SeDebugPrivilege	1168	svchost.exe
Token: SeSystemEnvironmentPrivilege	1168	svchost.exe
Token: SeChangeNotifyPrivilege	1168	svchost.exe
Token: SeRemoteShutdownPrivilege	1168	svchost.exe
Token: SeUndockPrivilege	1168	svchost.exe
Token: SeManageVolumePrivilege	1168	svchost.exe
Token: SeImpersonatePrivilege	1168	svchost.exe
Token: SeCreateGlobalPrivilege	1168	svchost.exe
Token: 33	1168	svchost.exe
Token: 34	1168	svchost.exe
Token: 35	1168	svchost.exe
Token: 36	1168	svchost.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1420 wrote to memory of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84
PID 1420 wrote to memory of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84
PID 1420 wrote to memory of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84
PID 1420 wrote to memory of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84
PID 1420 wrote to memory of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84
PID 1420 wrote to memory of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84
PID 1420 wrote to memory of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84
PID 1420 wrote to memory of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84
PID 1420 wrote to memory of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84
PID 1420 wrote to memory of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84
PID 1420 wrote to memory of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84
PID 1420 wrote to memory of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84
PID 1420 wrote to memory of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84
PID 1420 wrote to memory of 1168	1420	JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe	84
PID 1168 wrote to memory of 3628	1168	svchost.exe	96
PID 1168 wrote to memory of 3628	1168	svchost.exe	96
PID 1168 wrote to memory of 3628	1168	svchost.exe	96
PID 1168 wrote to memory of 1060	1168	svchost.exe	97
PID 1168 wrote to memory of 1060	1168	svchost.exe	97
PID 1168 wrote to memory of 1060	1168	svchost.exe	97
PID 1168 wrote to memory of 1172	1168	svchost.exe	99
PID 1168 wrote to memory of 1172	1168	svchost.exe	99
PID 1168 wrote to memory of 1172	1168	svchost.exe	99
PID 1060 wrote to memory of 4536	1060	cmd.exe	102
PID 1060 wrote to memory of 4536	1060	cmd.exe	102
PID 1060 wrote to memory of 4536	1060	cmd.exe	102
PID 3628 wrote to memory of 2436	3628	cmd.exe	103
PID 3628 wrote to memory of 2436	3628	cmd.exe	103
PID 3628 wrote to memory of 2436	3628	cmd.exe	103

Views/modifies file attributes 1 TTPs 2 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2436	attrib.exe
4536	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ab5823c24ebc82c7968b4f4b851a446e.exe"
1⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1420
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\svchost.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1168
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\svchost.exe" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3628
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\svchost.exe" +s +h
      4⤵
      Sets file to hidden
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:2436
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1060
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:4536
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1172

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

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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Downloads

C:\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Download Submit
memory/1168-7-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1168-10-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1168-12-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1168-16-0x00000000025D0000-0x00000000025D1000-memory.dmp

Filesize
4KB

Download
memory/1168-15-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1168-28-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/1420-0-0x00000000753B2000-0x00000000753B3000-memory.dmp

Filesize
4KB

Download
memory/1420-1-0x00000000753B0000-0x0000000075961000-memory.dmp

Filesize
5.7MB

Download
memory/1420-2-0x00000000753B0000-0x0000000075961000-memory.dmp

Filesize
5.7MB

Download
memory/1420-13-0x00000000753B0000-0x0000000075961000-memory.dmp

Filesize
5.7MB

Download