darkcomet | 0e8b4487dc2329956cfba875d3db8166136c0e8faedab0735f1af63f724ddfda

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
28-06-2024 11:53

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General

Target

1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Size

646KB
MD5

1a0494c25535b8afcec320508785e0c7
SHA1

681baf728c857e615ffe9cbe08f1d1c288ccdf3a
SHA256

0e8b4487dc2329956cfba875d3db8166136c0e8faedab0735f1af63f724ddfda
SHA512

11516919e264f6b06fbedc1aada85cf3ca823c2b99613e31c479c182f6e9db7a2a73db986a744984114a78459c8a0c1be254929e3074e8e6ffbd2fa52a2426f9
SSDEEP

12288:A8UaT9XY2siA0bMG09xD7I3Gg8ecgVvfBoCDBOQQYbVXpuy1f/gORixI:5UKoN0bUxgGa/pfBHDb+y1HgZC

Score

10^/10

darkcomet 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

Processes:

1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Roaming\\gtalk\\Gtalk.exe"	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

Gtalk.exe

pid process

2928 Gtalk.exe
Loads dropped DLL 2 IoCs

Processes:

1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe

pid process

1856 1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
1856 1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe

pid	process
2928	Gtalk.exe

pid	process
1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000\Software\Microsoft\Windows\CurrentVersion\Run\Gtalk = "C:\\Users\\Admin\\AppData\\Roaming\\gtalk\\Gtalk.exe"	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exeGtalk.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeSecurityPrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeBackupPrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeRestorePrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeShutdownPrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeDebugPrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeUndockPrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: 33	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: 34	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: 35	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2928	Gtalk.exe
Token: SeSecurityPrivilege	2928	Gtalk.exe
Token: SeTakeOwnershipPrivilege	2928	Gtalk.exe
Token: SeLoadDriverPrivilege	2928	Gtalk.exe
Token: SeSystemProfilePrivilege	2928	Gtalk.exe
Token: SeSystemtimePrivilege	2928	Gtalk.exe
Token: SeProfSingleProcessPrivilege	2928	Gtalk.exe
Token: SeIncBasePriorityPrivilege	2928	Gtalk.exe
Token: SeCreatePagefilePrivilege	2928	Gtalk.exe
Token: SeBackupPrivilege	2928	Gtalk.exe
Token: SeRestorePrivilege	2928	Gtalk.exe
Token: SeShutdownPrivilege	2928	Gtalk.exe
Token: SeDebugPrivilege	2928	Gtalk.exe
Token: SeSystemEnvironmentPrivilege	2928	Gtalk.exe
Token: SeChangeNotifyPrivilege	2928	Gtalk.exe
Token: SeRemoteShutdownPrivilege	2928	Gtalk.exe
Token: SeUndockPrivilege	2928	Gtalk.exe
Token: SeManageVolumePrivilege	2928	Gtalk.exe
Token: SeImpersonatePrivilege	2928	Gtalk.exe
Token: SeCreateGlobalPrivilege	2928	Gtalk.exe
Token: 33	2928	Gtalk.exe
Token: 34	2928	Gtalk.exe
Token: 35	2928	Gtalk.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Gtalk.exe

pid process

2928 Gtalk.exe

pid	process
2928	Gtalk.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe

description	pid	process	target process
PID 1856 wrote to memory of 2928	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe	Gtalk.exe
PID 1856 wrote to memory of 2928	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe	Gtalk.exe
PID 1856 wrote to memory of 2928	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe	Gtalk.exe
PID 1856 wrote to memory of 2928	1856	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe	Gtalk.exe

C:\Users\Admin\AppData\Local\Temp\1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1856

C:\Users\Admin\AppData\Roaming\gtalk\Gtalk.exe
"C:\Users\Admin\AppData\Roaming\gtalk\Gtalk.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2928

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

\Users\Admin\AppData\Roaming\gtalk\Gtalk.exe
Filesize
646KB

MD5
1a0494c25535b8afcec320508785e0c7

SHA1
681baf728c857e615ffe9cbe08f1d1c288ccdf3a

SHA256
0e8b4487dc2329956cfba875d3db8166136c0e8faedab0735f1af63f724ddfda

SHA512
11516919e264f6b06fbedc1aada85cf3ca823c2b99613e31c479c182f6e9db7a2a73db986a744984114a78459c8a0c1be254929e3074e8e6ffbd2fa52a2426f9

Download Submit
memory/1856-0-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/1856-11-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2928-17-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2928-19-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2928-14-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2928-15-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2928-16-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2928-12-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2928-18-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2928-13-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2928-20-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2928-21-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2928-22-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2928-23-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2928-24-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2928-25-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2928-26-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download