darkcomet | deda3d87516324cb41ed92c564021bbfe2aae8b0878ee607fe2766e8dcc399a9

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
16/07/2024, 00:57

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General

Target

4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Size

636KB
MD5

4c281321c285b54911255201ed67f51e
SHA1

76f248cadbd21a9fd28466b8ac558eec1ea955ee
SHA256

deda3d87516324cb41ed92c564021bbfe2aae8b0878ee607fe2766e8dcc399a9
SHA512

e18e0dddcecc29ebf1eba4a41c96b42e91c685f8b86d99446ceb0197529400a939104874ed4b767c654c28c0641256d0f6a6a7ce4c534dcd8028cd8295db95d3
SSDEEP

12288:/pwABK90BOe/x9lPAYvxPQVjdsAY2XjWlnlpTMMXG91uhKIXn/SL:xwAcu99lPzvxP+Bsz2XjWTRMQckkIXno

Score

10^/10

darkcomet persistence rat trojan

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat 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:\\Windupdt\\winupdate.exe"	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.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-1-5-21-2650514177-1034912467-4025611726-1000\Control Panel\International\Geo\Nation	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
1876	winupdate.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2650514177-1034912467-4025611726-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 8 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeSecurityPrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeSystemtimePrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeBackupPrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeRestorePrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeShutdownPrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeDebugPrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeUndockPrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeManageVolumePrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeImpersonatePrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: 33	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: 34	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: 35	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: 36	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1876	winupdate.exe
Token: SeSecurityPrivilege	1876	winupdate.exe
Token: SeTakeOwnershipPrivilege	1876	winupdate.exe
Token: SeLoadDriverPrivilege	1876	winupdate.exe
Token: SeSystemProfilePrivilege	1876	winupdate.exe
Token: SeSystemtimePrivilege	1876	winupdate.exe
Token: SeProfSingleProcessPrivilege	1876	winupdate.exe
Token: SeIncBasePriorityPrivilege	1876	winupdate.exe
Token: SeCreatePagefilePrivilege	1876	winupdate.exe
Token: SeBackupPrivilege	1876	winupdate.exe
Token: SeRestorePrivilege	1876	winupdate.exe
Token: SeShutdownPrivilege	1876	winupdate.exe
Token: SeDebugPrivilege	1876	winupdate.exe
Token: SeSystemEnvironmentPrivilege	1876	winupdate.exe
Token: SeChangeNotifyPrivilege	1876	winupdate.exe
Token: SeRemoteShutdownPrivilege	1876	winupdate.exe
Token: SeUndockPrivilege	1876	winupdate.exe
Token: SeManageVolumePrivilege	1876	winupdate.exe
Token: SeImpersonatePrivilege	1876	winupdate.exe
Token: SeCreateGlobalPrivilege	1876	winupdate.exe
Token: 33	1876	winupdate.exe
Token: 34	1876	winupdate.exe
Token: 35	1876	winupdate.exe
Token: 36	1876	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1876	winupdate.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 5004 wrote to memory of 3532	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	85
PID 5004 wrote to memory of 3532	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	85
PID 5004 wrote to memory of 3532	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	85
PID 5004 wrote to memory of 1876	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	87
PID 5004 wrote to memory of 1876	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	87
PID 5004 wrote to memory of 1876	5004	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	87
PID 1876 wrote to memory of 4868	1876	winupdate.exe	88
PID 1876 wrote to memory of 4868	1876	winupdate.exe	88
PID 1876 wrote to memory of 4868	1876	winupdate.exe	88

C:\Users\Admin\AppData\Local\Temp\4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4c281321c285b54911255201ed67f51e_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  PID:3532
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1876
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:4868

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windupdt\winupdate.exe

Filesize
636KB

MD5
4c281321c285b54911255201ed67f51e

SHA1
76f248cadbd21a9fd28466b8ac558eec1ea955ee

SHA256
deda3d87516324cb41ed92c564021bbfe2aae8b0878ee607fe2766e8dcc399a9

SHA512
e18e0dddcecc29ebf1eba4a41c96b42e91c685f8b86d99446ceb0197529400a939104874ed4b767c654c28c0641256d0f6a6a7ce4c534dcd8028cd8295db95d3

Download Submit
memory/1876-16-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1876-18-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1876-11-0x0000000002730000-0x0000000002731000-memory.dmp

Filesize
4KB

Download
memory/1876-12-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1876-13-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1876-14-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1876-15-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1876-25-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1876-24-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1876-19-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1876-17-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1876-20-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1876-21-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1876-22-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1876-23-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/5004-9-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/5004-0-0x0000000002820000-0x0000000002821000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads