darkcomet | 5137ed4add504869782db4bf3c9c5539010c50f4fa7bee478610df46fe9fd34f

General

Target
679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe
Size 1.7MB
Sample240723-pr319azdmm
SHA256 5137ed4add504869782db4bf3c9c5539010c50f4fa7bee478610df46fe9fd34f
MD5 679dab69dfd8d8a29438b42643b91e22
SHA1 1d82a1353b37db0cdeef67b8a3a833f707995ac5
SHA512 dbbdbd0114b1e52bafcf3b9f1d13781815099bdb23c3501c6652f9e9650f56f6d857189d401cc96544fb56e3ad7776be15cb1adeaf8a9d503d3d6837f017d1c0
SSDEEP 24576:h7FQg02OkDa9NPZZwrHcgIzQoT3yNK1AD0ITELmHm:RyzX1H8
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet victim persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

victim

C2

aslan6.zapto.org:1604

Mutex

DC_MUTEX-Q50A43E

Attributes

InstallPath
system32\winlogen.exe
gencode
3z7ihZbVu7mE
install
true
offline_keylogger
true
persistence
false
reg_key
winlogen

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:\\system32\\winlogen.exe"	svhost.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	svhost.exe

Executes dropped EXE 2 IoCs

pid	Process
5024	svhost.exe
640	winlogen.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-1-5-21-1705699165-553239100-4129523827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogen = "C:\\system32\\winlogen.exe"	svhost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4088 set thread context of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe
4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe
4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe
4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe
4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe
4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe
4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe
4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe
4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	5024	svhost.exe
Token: SeSecurityPrivilege	5024	svhost.exe
Token: SeTakeOwnershipPrivilege	5024	svhost.exe
Token: SeLoadDriverPrivilege	5024	svhost.exe
Token: SeSystemProfilePrivilege	5024	svhost.exe
Token: SeSystemtimePrivilege	5024	svhost.exe
Token: SeProfSingleProcessPrivilege	5024	svhost.exe
Token: SeIncBasePriorityPrivilege	5024	svhost.exe
Token: SeCreatePagefilePrivilege	5024	svhost.exe
Token: SeBackupPrivilege	5024	svhost.exe
Token: SeRestorePrivilege	5024	svhost.exe
Token: SeShutdownPrivilege	5024	svhost.exe
Token: SeDebugPrivilege	5024	svhost.exe
Token: SeSystemEnvironmentPrivilege	5024	svhost.exe
Token: SeChangeNotifyPrivilege	5024	svhost.exe
Token: SeRemoteShutdownPrivilege	5024	svhost.exe
Token: SeUndockPrivilege	5024	svhost.exe
Token: SeManageVolumePrivilege	5024	svhost.exe
Token: SeImpersonatePrivilege	5024	svhost.exe
Token: SeCreateGlobalPrivilege	5024	svhost.exe
Token: 33	5024	svhost.exe
Token: 34	5024	svhost.exe
Token: 35	5024	svhost.exe
Token: 36	5024	svhost.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4088 wrote to memory of 4960	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	90
PID 4088 wrote to memory of 4960	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	90
PID 4088 wrote to memory of 4960	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	90
PID 4088 wrote to memory of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91
PID 4088 wrote to memory of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91
PID 4088 wrote to memory of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91
PID 4088 wrote to memory of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91
PID 4088 wrote to memory of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91
PID 4088 wrote to memory of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91
PID 4088 wrote to memory of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91
PID 4088 wrote to memory of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91
PID 4088 wrote to memory of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91
PID 4088 wrote to memory of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91
PID 4088 wrote to memory of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91
PID 4088 wrote to memory of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91
PID 4088 wrote to memory of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91
PID 4088 wrote to memory of 5024	4088	679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe	91
PID 5024 wrote to memory of 640	5024	svhost.exe	92
PID 5024 wrote to memory of 640	5024	svhost.exe	92
PID 5024 wrote to memory of 640	5024	svhost.exe	92

C:\Users\Admin\AppData\Local\Temp\679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\679dab69dfd8d8a29438b42643b91e22_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4088
- C:\Users\Admin\AppData\Local\Temp\winamp\svhost.exe
  C:\Users\Admin\AppData\Local\Temp\\winamp\svhost.exe
  2⤵
  PID:4960
- C:\Users\Admin\AppData\Local\Temp\winamp\svhost.exe
  C:\Users\Admin\AppData\Local\Temp\\winamp\svhost.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5024
- - C:\system32\winlogen.exe
    "C:\system32\winlogen.exe"
    3⤵
    - Executes dropped EXE
    PID:640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

svhost.exe

Path C:\Users\Admin\AppData\Local\Temp\winamp\svhost.exe
Size 1.1MB
SHA256 b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0
MD5 d881de17aa8f2e2c08cbb7b265f928f9
SHA1 08936aebc87decf0af6e8eada191062b5e65ac2a
SHA512 5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34
SSDEEP 24576:jp2silPBMIXGWClfuRcUGIJYK15Qs/QZM:jp2sMO7VzUTJH15QFZM
MD5 SHA1 SHA512 SSDEEP

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memory/4088-0-0x0000000074B32000-0x0000000074B33000-memory.dmp

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memory/4088-1-0x0000000074B30000-0x00000000750E1000-memory.dmp

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memory/4088-2-0x0000000074B30000-0x00000000750E1000-memory.dmp

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memory/4088-28-0x0000000074B30000-0x00000000750E1000-memory.dmp

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memory/5024-7-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/5024-9-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/5024-10-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/5024-11-0x00000000022D0000-0x00000000022D1000-memory.dmp

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memory/5024-24-0x0000000000400000-0x00000000004B5000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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