darkcomet | 798e10b605271da12ad3be72810b6f498e79426e8377f82c9292183fb278b5c3

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10/10/2024, 23:44

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General

Target
325493bf5461151c851d529081154116_JaffaCakes118.exe
Size 958KB
Sample241010-3rgpxayapp
SHA256 798e10b605271da12ad3be72810b6f498e79426e8377f82c9292183fb278b5c3
MD5 325493bf5461151c851d529081154116
SHA1 81e60a2bc0b395f1e1024bae4727fdc3ca9eb349
SHA512 3078a308c1fe15924e8493a001bdd5f603cfd4e5774f06dfc499120d30461e27364f170908aabff056c73c61326cd3ab9a97fe24e44bc42f511b6b8811d1e662
SSDEEP 12288:6pzrL9sadDg0GY6XNAnMmTERC3gCPjiwbloUEHC4nMj4yIa2Y0gQBnhw:ozLVIqFWd7ooUEbCWjgQBnhw
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

brucewillis.no-ip.org:3987

Mutex

DC_MUTEX-QVRMSFK

Attributes

gencode
GjyLm4ws1Jku
install
false
offline_keylogger
true
persistence
false

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Executes dropped EXE 1 IoCs

pid	Process
3752	Service.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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\FacbookUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\FacbookUpdate.exe"	325493bf5461151c851d529081154116_JaffaCakes118.exe

Drops autorun.inf file 1 TTPs 2 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File opened for modification	C:\autorun.inf	325493bf5461151c851d529081154116_JaffaCakes118.exe
File created	C:\autorun.inf	325493bf5461151c851d529081154116_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4240 set thread context of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86

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 2 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	325493bf5461151c851d529081154116_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Service.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4240	325493bf5461151c851d529081154116_JaffaCakes118.exe
4240	325493bf5461151c851d529081154116_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3752	Service.exe
Token: SeSecurityPrivilege	3752	Service.exe
Token: SeTakeOwnershipPrivilege	3752	Service.exe
Token: SeLoadDriverPrivilege	3752	Service.exe
Token: SeSystemProfilePrivilege	3752	Service.exe
Token: SeSystemtimePrivilege	3752	Service.exe
Token: SeProfSingleProcessPrivilege	3752	Service.exe
Token: SeIncBasePriorityPrivilege	3752	Service.exe
Token: SeCreatePagefilePrivilege	3752	Service.exe
Token: SeBackupPrivilege	3752	Service.exe
Token: SeRestorePrivilege	3752	Service.exe
Token: SeShutdownPrivilege	3752	Service.exe
Token: SeDebugPrivilege	3752	Service.exe
Token: SeSystemEnvironmentPrivilege	3752	Service.exe
Token: SeChangeNotifyPrivilege	3752	Service.exe
Token: SeRemoteShutdownPrivilege	3752	Service.exe
Token: SeUndockPrivilege	3752	Service.exe
Token: SeManageVolumePrivilege	3752	Service.exe
Token: SeImpersonatePrivilege	3752	Service.exe
Token: SeCreateGlobalPrivilege	3752	Service.exe
Token: 33	3752	Service.exe
Token: 34	3752	Service.exe
Token: 35	3752	Service.exe
Token: 36	3752	Service.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3752	Service.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4240 wrote to memory of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86
PID 4240 wrote to memory of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86
PID 4240 wrote to memory of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86
PID 4240 wrote to memory of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86
PID 4240 wrote to memory of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86
PID 4240 wrote to memory of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86
PID 4240 wrote to memory of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86
PID 4240 wrote to memory of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86
PID 4240 wrote to memory of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86
PID 4240 wrote to memory of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86
PID 4240 wrote to memory of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86
PID 4240 wrote to memory of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86
PID 4240 wrote to memory of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86
PID 4240 wrote to memory of 3752	4240	325493bf5461151c851d529081154116_JaffaCakes118.exe	86

C:\Users\Admin\AppData\Local\Temp\325493bf5461151c851d529081154116_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\325493bf5461151c851d529081154116_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Drops autorun.inf file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4240
- C:\Users\Admin\AppData\Local\Temp\AppLaunch\Service.exe
  C:\Users\Admin\AppData\Local\Temp\\AppLaunch\Service.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3752

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

Service.exe

Path C:\Users\Admin\AppData\Local\Temp\AppLaunch\Service.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/3752-29-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-37-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-40-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-12-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-15-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-16-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-18-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-21-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-20-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-19-0x00000000022D0000-0x00000000022D1000-memory.dmp

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memory/3752-39-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-38-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-25-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-24-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-30-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-27-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-28-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-36-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-26-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-31-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/3752-32-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/4240-0-0x0000000075372000-0x0000000075373000-memory.dmp

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memory/4240-2-0x0000000075370000-0x0000000075921000-memory.dmp

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memory/4240-23-0x0000000075370000-0x0000000075921000-memory.dmp

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memory/4240-22-0x0000000075372000-0x0000000075373000-memory.dmp

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memory/4240-1-0x0000000075370000-0x0000000075921000-memory.dmp

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