darkcomet | 7a25feffffde29b39646ccc154106a751c7c279d8b879121ff359fc5d25089ff

Analysis

max time kernel
148s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
19/07/2024, 03:43

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General

Target
5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Size 648KB
Sample240719-eaam9s1dnj
SHA256 7a25feffffde29b39646ccc154106a751c7c279d8b879121ff359fc5d25089ff
MD5 5a560256c8742b18bed67adce6f9c6cb
SHA1 24306ae76c0eddf5302e75d0098973527b6e23db
SHA512 1a01123cebe614ac01a242462b298c6bd0b18c2c6d5f8e227228165001beac732b785e36df39f5a0dd0a2fa3b5e2ffad9b3d0dadae8e2037fa232750155f700f
SSDEEP 12288:86A84PaHhfD/tV9sj5NKR0pau9XGyu2qBVGLQyTPfhm:RAmBpVKHu0Mu9Xo20VGLVP5m
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet evasion 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"	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
3576	attrib.exe
1608	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-1-5-21-47134698-4092160662-1261813102-1000\Control Panel\International\Geo\Nation	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
1436	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-1-5-21-47134698-4092160662-1261813102-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1472	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1436	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeSecurityPrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeSystemtimePrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeBackupPrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeRestorePrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeShutdownPrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeDebugPrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeUndockPrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeManageVolumePrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeImpersonatePrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: 33	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: 34	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: 35	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: 36	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1436	winupdate.exe
Token: SeSecurityPrivilege	1436	winupdate.exe
Token: SeTakeOwnershipPrivilege	1436	winupdate.exe
Token: SeLoadDriverPrivilege	1436	winupdate.exe
Token: SeSystemProfilePrivilege	1436	winupdate.exe
Token: SeSystemtimePrivilege	1436	winupdate.exe
Token: SeProfSingleProcessPrivilege	1436	winupdate.exe
Token: SeIncBasePriorityPrivilege	1436	winupdate.exe
Token: SeCreatePagefilePrivilege	1436	winupdate.exe
Token: SeBackupPrivilege	1436	winupdate.exe
Token: SeRestorePrivilege	1436	winupdate.exe
Token: SeShutdownPrivilege	1436	winupdate.exe
Token: SeDebugPrivilege	1436	winupdate.exe
Token: SeSystemEnvironmentPrivilege	1436	winupdate.exe
Token: SeChangeNotifyPrivilege	1436	winupdate.exe
Token: SeRemoteShutdownPrivilege	1436	winupdate.exe
Token: SeUndockPrivilege	1436	winupdate.exe
Token: SeManageVolumePrivilege	1436	winupdate.exe
Token: SeImpersonatePrivilege	1436	winupdate.exe
Token: SeCreateGlobalPrivilege	1436	winupdate.exe
Token: 33	1436	winupdate.exe
Token: 34	1436	winupdate.exe
Token: 35	1436	winupdate.exe
Token: 36	1436	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1436	winupdate.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 232 wrote to memory of 4956	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe	84
PID 232 wrote to memory of 4956	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe	84
PID 232 wrote to memory of 4956	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe	84
PID 232 wrote to memory of 4640	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe	86
PID 232 wrote to memory of 4640	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe	86
PID 232 wrote to memory of 4640	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe	86
PID 4640 wrote to memory of 1608	4640	cmd.exe	89
PID 4640 wrote to memory of 1608	4640	cmd.exe	89
PID 4640 wrote to memory of 1608	4640	cmd.exe	89
PID 4956 wrote to memory of 3576	4956	cmd.exe	88
PID 4956 wrote to memory of 3576	4956	cmd.exe	88
PID 4956 wrote to memory of 3576	4956	cmd.exe	88
PID 232 wrote to memory of 1436	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe	91
PID 232 wrote to memory of 1436	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe	91
PID 232 wrote to memory of 1436	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe	91
PID 232 wrote to memory of 1168	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe	93
PID 232 wrote to memory of 1168	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe	93
PID 232 wrote to memory of 1168	232	5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe	93
PID 1168 wrote to memory of 1472	1168	cmd.exe	95
PID 1168 wrote to memory of 1472	1168	cmd.exe	95
PID 1168 wrote to memory of 1472	1168	cmd.exe	95

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3576	attrib.exe
1608	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:232
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4956
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:3576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4640
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:1608
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1436
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Users\Admin\AppData\Local\Temp\5a560256c8742b18bed67adce6f9c6cb_JaffaCakes118.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1168
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 5
    3⤵
    - Runs ping.exe
    PID:1472

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

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

winupdate.exe

Path C:\Windupdt\winupdate.exe
Size 648KB
SHA256 7a25feffffde29b39646ccc154106a751c7c279d8b879121ff359fc5d25089ff
MD5 5a560256c8742b18bed67adce6f9c6cb
SHA1 24306ae76c0eddf5302e75d0098973527b6e23db
SHA512 1a01123cebe614ac01a242462b298c6bd0b18c2c6d5f8e227228165001beac732b785e36df39f5a0dd0a2fa3b5e2ffad9b3d0dadae8e2037fa232750155f700f
SSDEEP 12288:86A84PaHhfD/tV9sj5NKR0pau9XGyu2qBVGLQyTPfhm:RAmBpVKHu0Mu9Xo20VGLVP5m
MD5 SHA1 SHA512 SSDEEP

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memory/232-0-0x0000000002270000-0x0000000002271000-memory.dmp

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memory/232-34-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/1436-40-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/1436-42-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/1436-37-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/1436-38-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/1436-39-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/1436-35-0x0000000000610000-0x0000000000611000-memory.dmp

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memory/1436-41-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/1436-36-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/1436-43-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/1436-44-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/1436-45-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/1436-46-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/1436-47-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/1436-48-0x0000000000400000-0x00000000004B3000-memory.dmp

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memory/1436-49-0x0000000000400000-0x00000000004B3000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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