darkcomet | deda3d87516324cb41ed92c564021bbfe2aae8b0878ee607fe2766e8dcc399a9

Analysis

max time kernel
149s
max time network
123s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-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	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2388	winupdate.exe

Loads dropped DLL 4 IoCs

pid	Process
2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
2388	winupdate.exe
2388	winupdate.exe
2388	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-1-5-21-3450744190-3404161390-554719085-1000\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	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
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

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 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeSecurityPrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeBackupPrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeRestorePrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeShutdownPrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeDebugPrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeUndockPrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: 33	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: 34	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: 35	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2388	winupdate.exe
Token: SeSecurityPrivilege	2388	winupdate.exe
Token: SeTakeOwnershipPrivilege	2388	winupdate.exe
Token: SeLoadDriverPrivilege	2388	winupdate.exe
Token: SeSystemProfilePrivilege	2388	winupdate.exe
Token: SeSystemtimePrivilege	2388	winupdate.exe
Token: SeProfSingleProcessPrivilege	2388	winupdate.exe
Token: SeIncBasePriorityPrivilege	2388	winupdate.exe
Token: SeCreatePagefilePrivilege	2388	winupdate.exe
Token: SeBackupPrivilege	2388	winupdate.exe
Token: SeRestorePrivilege	2388	winupdate.exe
Token: SeShutdownPrivilege	2388	winupdate.exe
Token: SeDebugPrivilege	2388	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2388	winupdate.exe
Token: SeChangeNotifyPrivilege	2388	winupdate.exe
Token: SeRemoteShutdownPrivilege	2388	winupdate.exe
Token: SeUndockPrivilege	2388	winupdate.exe
Token: SeManageVolumePrivilege	2388	winupdate.exe
Token: SeImpersonatePrivilege	2388	winupdate.exe
Token: SeCreateGlobalPrivilege	2388	winupdate.exe
Token: 33	2388	winupdate.exe
Token: 34	2388	winupdate.exe
Token: 35	2388	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2388	winupdate.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 2072	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	30
PID 2068 wrote to memory of 2072	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	30
PID 2068 wrote to memory of 2072	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	30
PID 2068 wrote to memory of 2072	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	30
PID 2068 wrote to memory of 2388	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	31
PID 2068 wrote to memory of 2388	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	31
PID 2068 wrote to memory of 2388	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	31
PID 2068 wrote to memory of 2388	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	31
PID 2068 wrote to memory of 2388	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	31
PID 2068 wrote to memory of 2388	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	31
PID 2068 wrote to memory of 2388	2068	4c281321c285b54911255201ed67f51e_JaffaCakes118.exe	31
PID 2388 wrote to memory of 2196	2388	winupdate.exe	32
PID 2388 wrote to memory of 2196	2388	winupdate.exe	32
PID 2388 wrote to memory of 2196	2388	winupdate.exe	32
PID 2388 wrote to memory of 2196	2388	winupdate.exe	32
PID 2388 wrote to memory of 2196	2388	winupdate.exe	32
PID 2388 wrote to memory of 2196	2388	winupdate.exe	32
PID 2388 wrote to memory of 2196	2388	winupdate.exe	32

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
- Loads dropped DLL
- 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:2068
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  PID:2072
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:2196

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

\Windupdt\winupdate.exe

Filesize
636KB

MD5
4c281321c285b54911255201ed67f51e

SHA1
76f248cadbd21a9fd28466b8ac558eec1ea955ee

SHA256
deda3d87516324cb41ed92c564021bbfe2aae8b0878ee607fe2766e8dcc399a9

SHA512
e18e0dddcecc29ebf1eba4a41c96b42e91c685f8b86d99446ceb0197529400a939104874ed4b767c654c28c0641256d0f6a6a7ce4c534dcd8028cd8295db95d3

Download Submit
memory/2068-0-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2068-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-18-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-20-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-15-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-16-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-17-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-13-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-19-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-14-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-21-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-22-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-23-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-24-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-25-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2388-26-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads