darkcomet | 9b5c188cf6c5ac53f106d91d47a6363964be7824df1ea737814267c1ce6c4a8f

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/06/2024, 06:42

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
0d1a16f7360275ea0df412555d8df41c_JaffaCakes118.exe
Size 1.5MB
Sample240625-hgc9hsvfpc
SHA256 9b5c188cf6c5ac53f106d91d47a6363964be7824df1ea737814267c1ce6c4a8f
MD5 0d1a16f7360275ea0df412555d8df41c
SHA1 0f35f4e9c1c3fea57560131d0cae0d6898ab78db
SHA512 39366843c466d2288623f5c3de955b96fa7b6a7d007dbcf1b1184855fc371393b86d8c63c67ea7bc070ef2dad138057245120fd949cac6e24ebe6ee884a8159d
SSDEEP 24576:Jx03nIlcXgYZhukuphb03nZupkDyPtj73nbWmJVJFwSddIXvfhqbiaxvRxq96S:Jx0ycXgYWFX0c9tHamdZdcBYTS
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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	server.exe

Modifies security service 2 TTPs 2 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	iexplore.exe

Windows security bypass 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	iexplore.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
2200	attrib.exe
2100	attrib.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	server.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	0d1a16f7360275ea0df412555d8df41c_JaffaCakes118.exe

Executes dropped EXE 3 IoCs

pid	Process
4256	NOTEPAD.EXE
2908	server.exe
4492	msdcsc.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4492 set thread context of 1252	4492	msdcsc.exe	104

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\	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1252	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2908	server.exe
Token: SeSecurityPrivilege	2908	server.exe
Token: SeTakeOwnershipPrivilege	2908	server.exe
Token: SeLoadDriverPrivilege	2908	server.exe
Token: SeSystemProfilePrivilege	2908	server.exe
Token: SeSystemtimePrivilege	2908	server.exe
Token: SeProfSingleProcessPrivilege	2908	server.exe
Token: SeIncBasePriorityPrivilege	2908	server.exe
Token: SeCreatePagefilePrivilege	2908	server.exe
Token: SeBackupPrivilege	2908	server.exe
Token: SeRestorePrivilege	2908	server.exe
Token: SeShutdownPrivilege	2908	server.exe
Token: SeDebugPrivilege	2908	server.exe
Token: SeSystemEnvironmentPrivilege	2908	server.exe
Token: SeChangeNotifyPrivilege	2908	server.exe
Token: SeRemoteShutdownPrivilege	2908	server.exe
Token: SeUndockPrivilege	2908	server.exe
Token: SeManageVolumePrivilege	2908	server.exe
Token: SeImpersonatePrivilege	2908	server.exe
Token: SeCreateGlobalPrivilege	2908	server.exe
Token: 33	2908	server.exe
Token: 34	2908	server.exe
Token: 35	2908	server.exe
Token: 36	2908	server.exe
Token: SeIncreaseQuotaPrivilege	4492	msdcsc.exe
Token: SeSecurityPrivilege	4492	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4492	msdcsc.exe
Token: SeLoadDriverPrivilege	4492	msdcsc.exe
Token: SeSystemProfilePrivilege	4492	msdcsc.exe
Token: SeSystemtimePrivilege	4492	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4492	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4492	msdcsc.exe
Token: SeCreatePagefilePrivilege	4492	msdcsc.exe
Token: SeBackupPrivilege	4492	msdcsc.exe
Token: SeRestorePrivilege	4492	msdcsc.exe
Token: SeShutdownPrivilege	4492	msdcsc.exe
Token: SeDebugPrivilege	4492	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4492	msdcsc.exe
Token: SeChangeNotifyPrivilege	4492	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4492	msdcsc.exe
Token: SeUndockPrivilege	4492	msdcsc.exe
Token: SeManageVolumePrivilege	4492	msdcsc.exe
Token: SeImpersonatePrivilege	4492	msdcsc.exe
Token: SeCreateGlobalPrivilege	4492	msdcsc.exe
Token: 33	4492	msdcsc.exe
Token: 34	4492	msdcsc.exe
Token: 35	4492	msdcsc.exe
Token: 36	4492	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	1252	iexplore.exe
Token: SeSecurityPrivilege	1252	iexplore.exe
Token: SeTakeOwnershipPrivilege	1252	iexplore.exe
Token: SeLoadDriverPrivilege	1252	iexplore.exe
Token: SeSystemProfilePrivilege	1252	iexplore.exe
Token: SeSystemtimePrivilege	1252	iexplore.exe
Token: SeProfSingleProcessPrivilege	1252	iexplore.exe
Token: SeIncBasePriorityPrivilege	1252	iexplore.exe
Token: SeCreatePagefilePrivilege	1252	iexplore.exe
Token: SeBackupPrivilege	1252	iexplore.exe
Token: SeRestorePrivilege	1252	iexplore.exe
Token: SeShutdownPrivilege	1252	iexplore.exe
Token: SeDebugPrivilege	1252	iexplore.exe
Token: SeSystemEnvironmentPrivilege	1252	iexplore.exe
Token: SeChangeNotifyPrivilege	1252	iexplore.exe
Token: SeRemoteShutdownPrivilege	1252	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1252	iexplore.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 4256	1576	0d1a16f7360275ea0df412555d8df41c_JaffaCakes118.exe	92
PID 1576 wrote to memory of 4256	1576	0d1a16f7360275ea0df412555d8df41c_JaffaCakes118.exe	92
PID 1576 wrote to memory of 4256	1576	0d1a16f7360275ea0df412555d8df41c_JaffaCakes118.exe	92
PID 1576 wrote to memory of 2908	1576	0d1a16f7360275ea0df412555d8df41c_JaffaCakes118.exe	93
PID 1576 wrote to memory of 2908	1576	0d1a16f7360275ea0df412555d8df41c_JaffaCakes118.exe	93
PID 1576 wrote to memory of 2908	1576	0d1a16f7360275ea0df412555d8df41c_JaffaCakes118.exe	93
PID 2908 wrote to memory of 936	2908	server.exe	94
PID 2908 wrote to memory of 936	2908	server.exe	94
PID 2908 wrote to memory of 936	2908	server.exe	94
PID 2908 wrote to memory of 1396	2908	server.exe	96
PID 2908 wrote to memory of 1396	2908	server.exe	96
PID 2908 wrote to memory of 1396	2908	server.exe	96
PID 936 wrote to memory of 2200	936	cmd.exe	98
PID 936 wrote to memory of 2200	936	cmd.exe	98
PID 936 wrote to memory of 2200	936	cmd.exe	98
PID 1396 wrote to memory of 2100	1396	cmd.exe	99
PID 1396 wrote to memory of 2100	1396	cmd.exe	99
PID 1396 wrote to memory of 2100	1396	cmd.exe	99
PID 2908 wrote to memory of 4492	2908	server.exe	102
PID 2908 wrote to memory of 4492	2908	server.exe	102
PID 2908 wrote to memory of 4492	2908	server.exe	102
PID 4492 wrote to memory of 1252	4492	msdcsc.exe	104
PID 4492 wrote to memory of 1252	4492	msdcsc.exe	104
PID 4492 wrote to memory of 1252	4492	msdcsc.exe	104
PID 4492 wrote to memory of 1252	4492	msdcsc.exe	104
PID 4492 wrote to memory of 1252	4492	msdcsc.exe	104

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2200	attrib.exe
2100	attrib.exe

C:\Users\Admin\AppData\Local\Temp\0d1a16f7360275ea0df412555d8df41c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0d1a16f7360275ea0df412555d8df41c_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Users\Admin\AppData\Local\Temp\NOTEPAD.EXE
  "C:\Users\Admin\AppData\Local\Temp\NOTEPAD.EXE"
  2⤵
  - Executes dropped EXE
  PID:4256
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2908
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:936
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:2200
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1396
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:2100
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Modifies security service
    - Windows security bypass
    - Executes dropped EXE
    - Windows security modification
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4492
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
      4⤵
      Modifies security service
      Windows security bypass
      Adds Run key to start application
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1252

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4788 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
1⤵
PID:1844

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

NOTEPAD.EXE

Path C:\Users\Admin\AppData\Local\Temp\NOTEPAD.EXE
Size 68KB
SHA256 887bdab7b8388de86bc8c25ea60e4ed0b30c9299ef5ced7016bc5e8b3042d1de
MD5 b26873c6b2aa21cdb1d39d03348bd713
SHA1 1c7440c9624b3661dec09b590bc7c737c7d5c751
SHA512 61752c72c00bd53a0153cc6a91191733b3b6a98a2c62fc352fcbf52841ffd1c35df769009b9efd2190614e1824d8e1bafd8ec07d5942ef8b20634dc1916b9adb
SSDEEP 1536:gHUwOnbNQKLjWDyy1o5I0/JUEbooPRrKKR0I6PIJFvFyh:bNQKPWDyDI0/JltZrpR0I6PIJFvFu
MD5 SHA1 SHA512 SSDEEP

Submit Download

server.exe

Path C:\Users\Admin\AppData\Local\Temp\server.exe
Size 821KB
SHA256 87102eb693243c9ab2df0a8d21d2e041d484ef84a822a4d8952c408d60ee1daf
MD5 c8d068b9d88ab240a9dc50b45efdf734
SHA1 de189a9d7d85b10d8da561746e75d00a065a4382
SHA512 339dba04b5976706b510d86682bf580f3f6bf136f23177e95a71d1e62362fc524b3856b109a328e7bee48d6279fa81a95cab10cb9698750a34a9567fc3c2e2d0
SSDEEP 12288:bFLlJnnbWOtz6sVJhvaz1Qc/WdI//vfM4qwrbkniafLo6vUTyl0w/q9jJ8b:53nbWmJVJFwSddIXvfhqbiaxvRxq96
MD5 SHA1 SHA512 SSDEEP

Submit Download

tmpcmd.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat
Size 50B
SHA256 adaf4a84b41e410b02e261cfd0fe7739d98647eab73c3badd32ac6e39f26351b
MD5 b774ae3fb1da087e1f83b4f7b2060e5a
SHA1 97eb9be49ac3af9c851c9e1e84e32bfd53e325a8
SHA512 f75d0f95f7306d26a12b414bfe37b97fbd37546cb3c6e403def7077329ddffb4b45d5c5f0ba0e7bb6d72851d2d691b0a85267beead42f7cbf2e8c3d45a3b4701
MD5 SHA1 SHA512

Submit Download

memory/1252-104-0x0000000000400000-0x00000000004DB000-memory.dmp

Download

memory/1576-1-0x00007FF984580000-0x00007FF984F21000-memory.dmp

Download

memory/1576-5-0x000000001BE20000-0x000000001BEBC000-memory.dmp

Download

memory/1576-6-0x0000000000CB0000-0x0000000000CB8000-memory.dmp

Download

memory/1576-7-0x000000001BFB0000-0x000000001BFFC000-memory.dmp

Download

memory/1576-2-0x00007FF984580000-0x00007FF984F21000-memory.dmp

Download

memory/1576-3-0x000000001B2E0000-0x000000001B386000-memory.dmp

Download

memory/1576-29-0x00007FF984580000-0x00007FF984F21000-memory.dmp

Download

memory/1576-0-0x00007FF984835000-0x00007FF984836000-memory.dmp

Download

memory/1576-4-0x000000001B8B0000-0x000000001BD7E000-memory.dmp

Download

memory/2908-32-0x0000000002420000-0x0000000002421000-memory.dmp

Download

memory/2908-92-0x0000000000400000-0x00000000004DB000-memory.dmp

Download

memory/4492-105-0x0000000000400000-0x00000000004DB000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads