darkcomet | 35ccc564a28e1c965db59923298c25509bc5ba1bddc4db6fa58328c154be860c

Analysis

max time kernel
138s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15/10/2024, 18:32

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General

Target
495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe
Size 1.0MB
Sample241015-w6wdaazelh
SHA256 35ccc564a28e1c965db59923298c25509bc5ba1bddc4db6fa58328c154be860c
MD5 495e63ba473422c4753fc8287ac2e5e9
SHA1 d837994bd98e36d2cb2931e981f765ecac3a3325
SHA512 3fb5fbfa29a8c6b8371780c3a03562983e0b16bf96729e0cd52f842a3ca30e0b1789b432e5ba1e351a58f27ed5eabaa31bddc7f122f1d187266260062ea08985
SSDEEP 12288:7kpdlbnphqb54nweIH9M2LgLep2Nn8okQgJZa10IYI1ls1Tl:1TDTM2d3FaqTIw
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16_min discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16_min

pqj.zapto.org:1500

Mutex

DCMIN_MUTEX-18JAEQL

Attributes

InstallPath
DCSCMIN\Windows Defender.exe
gencode
FWecV5oVYbJE
install
true
offline_keylogger
true
persistence
false
reg_key
DarkComet RAT

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\\DCSCMIN\\Windows Defender.exe"	vbc.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
1048	hSwitch.exe
4932	Windows Defender.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DarkComet RAT = "C:\\Users\\Admin\\Documents\\DCSCMIN\\Windows Defender.exe"	vbc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Update = "C:\\Users\\Admin\\AppData\\Roaming\\Win Update.exe"	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4544 set thread context of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Defender.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hSwitch.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4092	vbc.exe
Token: SeSecurityPrivilege	4092	vbc.exe
Token: SeTakeOwnershipPrivilege	4092	vbc.exe
Token: SeLoadDriverPrivilege	4092	vbc.exe
Token: SeSystemProfilePrivilege	4092	vbc.exe
Token: SeSystemtimePrivilege	4092	vbc.exe
Token: SeProfSingleProcessPrivilege	4092	vbc.exe
Token: SeIncBasePriorityPrivilege	4092	vbc.exe
Token: SeCreatePagefilePrivilege	4092	vbc.exe
Token: SeBackupPrivilege	4092	vbc.exe
Token: SeRestorePrivilege	4092	vbc.exe
Token: SeShutdownPrivilege	4092	vbc.exe
Token: SeDebugPrivilege	4092	vbc.exe
Token: SeSystemEnvironmentPrivilege	4092	vbc.exe
Token: SeChangeNotifyPrivilege	4092	vbc.exe
Token: SeRemoteShutdownPrivilege	4092	vbc.exe
Token: SeUndockPrivilege	4092	vbc.exe
Token: SeManageVolumePrivilege	4092	vbc.exe
Token: SeImpersonatePrivilege	4092	vbc.exe
Token: SeCreateGlobalPrivilege	4092	vbc.exe
Token: 33	4092	vbc.exe
Token: 34	4092	vbc.exe
Token: 35	4092	vbc.exe
Token: 36	4092	vbc.exe
Token: SeDebugPrivilege	1048	hSwitch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1048	hSwitch.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4544 wrote to memory of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87
PID 4544 wrote to memory of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87
PID 4544 wrote to memory of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87
PID 4544 wrote to memory of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87
PID 4544 wrote to memory of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87
PID 4544 wrote to memory of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87
PID 4544 wrote to memory of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87
PID 4544 wrote to memory of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87
PID 4544 wrote to memory of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87
PID 4544 wrote to memory of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87
PID 4544 wrote to memory of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87
PID 4544 wrote to memory of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87
PID 4544 wrote to memory of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87
PID 4544 wrote to memory of 4092	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	87
PID 4544 wrote to memory of 1048	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	89
PID 4544 wrote to memory of 1048	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	89
PID 4544 wrote to memory of 1048	4544	495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe	89
PID 4092 wrote to memory of 4932	4092	vbc.exe	88
PID 4092 wrote to memory of 4932	4092	vbc.exe	88
PID 4092 wrote to memory of 4932	4092	vbc.exe	88

C:\Users\Admin\AppData\Local\Temp\495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\495e63ba473422c4753fc8287ac2e5e9_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4544
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4092
- - C:\Users\Admin\Documents\DCSCMIN\Windows Defender.exe
    "C:\Users\Admin\Documents\DCSCMIN\Windows Defender.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4932
- C:\Users\Admin\AppData\Local\Temp\hSwitch.exe
  "C:\Users\Admin\AppData\Local\Temp\hSwitch.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1048

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

hSwitch.exe

Path C:\Users\Admin\AppData\Local\Temp\hSwitch.exe
Size 54KB
SHA256 133e98db3c463de32d606fb6532100d569cea15c178b3d00e0c43bdfa8c9ba9f
MD5 4d84415bd9670204106fb892cd93e4f1
SHA1 10198bfd6074c0e88d494645357c22f2ceecf582
SHA512 4525e32f13c8b06f8b979c15452b111972d5cc6baf2633e12d9691ceeb1d9bff5e7f664bed95c56352e32e732761b71b312c35eebbd18d39db4582ca2a27fb75
SSDEEP 1536:iIiFS9fFindgLcgfVkFk3UV+2h2KXXR9S:g+fFid8kFk3UV+2lx
MD5 SHA1 SHA512 SSDEEP

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Windows Defender.exe

Path C:\Users\Admin\Documents\DCSCMIN\Windows Defender.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/1048-33-0x0000000074BB0000-0x0000000075161000-memory.dmp

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memory/1048-38-0x0000000074BB0000-0x0000000075161000-memory.dmp

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memory/1048-31-0x0000000074BB0000-0x0000000075161000-memory.dmp

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memory/1048-30-0x0000000074BB2000-0x0000000074BB3000-memory.dmp

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memory/4092-36-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/4092-5-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/4092-6-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/4092-7-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/4092-8-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/4092-3-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/4544-1-0x0000000074BB0000-0x0000000075161000-memory.dmp

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memory/4544-34-0x0000000074BB0000-0x0000000075161000-memory.dmp

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memory/4544-0-0x0000000074BB2000-0x0000000074BB3000-memory.dmp

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memory/4544-2-0x0000000074BB0000-0x0000000075161000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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