darkcomet | 0e8b4487dc2329956cfba875d3db8166136c0e8faedab0735f1af63f724ddfda

Analysis

max time kernel
152s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-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

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

Processes:

1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Executes dropped EXE 1 IoCs

Processes:

Gtalk.exe

pid process

3320 Gtalk.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe

pid	process
3320	Gtalk.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-1-5-21-3808065738-1666277613-1125846146-1000\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 48 IoCs

Processes:

1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exeGtalk.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeSecurityPrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeBackupPrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeRestorePrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeShutdownPrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeDebugPrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeUndockPrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: 33	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: 34	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: 35	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: 36	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3320	Gtalk.exe
Token: SeSecurityPrivilege	3320	Gtalk.exe
Token: SeTakeOwnershipPrivilege	3320	Gtalk.exe
Token: SeLoadDriverPrivilege	3320	Gtalk.exe
Token: SeSystemProfilePrivilege	3320	Gtalk.exe
Token: SeSystemtimePrivilege	3320	Gtalk.exe
Token: SeProfSingleProcessPrivilege	3320	Gtalk.exe
Token: SeIncBasePriorityPrivilege	3320	Gtalk.exe
Token: SeCreatePagefilePrivilege	3320	Gtalk.exe
Token: SeBackupPrivilege	3320	Gtalk.exe
Token: SeRestorePrivilege	3320	Gtalk.exe
Token: SeShutdownPrivilege	3320	Gtalk.exe
Token: SeDebugPrivilege	3320	Gtalk.exe
Token: SeSystemEnvironmentPrivilege	3320	Gtalk.exe
Token: SeChangeNotifyPrivilege	3320	Gtalk.exe
Token: SeRemoteShutdownPrivilege	3320	Gtalk.exe
Token: SeUndockPrivilege	3320	Gtalk.exe
Token: SeManageVolumePrivilege	3320	Gtalk.exe
Token: SeImpersonatePrivilege	3320	Gtalk.exe
Token: SeCreateGlobalPrivilege	3320	Gtalk.exe
Token: 33	3320	Gtalk.exe
Token: 34	3320	Gtalk.exe
Token: 35	3320	Gtalk.exe
Token: 36	3320	Gtalk.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Gtalk.exe

pid process

3320 Gtalk.exe

pid	process
3320	Gtalk.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe

description	pid	process	target process
PID 2332 wrote to memory of 3320	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe	Gtalk.exe
PID 2332 wrote to memory of 3320	2332	1a0494c25535b8afcec320508785e0c7_JaffaCakes118.exe	Gtalk.exe
PID 2332 wrote to memory of 3320	2332	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
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2332

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:3320

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=1328 --field-trial-handle=3060,i,1774866140584649235,8085848018931772189,262144 --variations-seed-version /prefetch:8
1⤵
PID:4156

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

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

MD5
1a0494c25535b8afcec320508785e0c7

SHA1
681baf728c857e615ffe9cbe08f1d1c288ccdf3a

SHA256
0e8b4487dc2329956cfba875d3db8166136c0e8faedab0735f1af63f724ddfda

SHA512
11516919e264f6b06fbedc1aada85cf3ca823c2b99613e31c479c182f6e9db7a2a73db986a744984114a78459c8a0c1be254929e3074e8e6ffbd2fa52a2426f9

Download Submit
memory/2332-0-0x00000000006B0000-0x00000000006B1000-memory.dmp

Filesize
4KB

Download
memory/2332-13-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3320-19-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3320-21-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3320-16-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3320-17-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3320-18-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3320-14-0x0000000002160000-0x0000000002161000-memory.dmp

Filesize
4KB

Download
memory/3320-20-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3320-15-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3320-22-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3320-23-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3320-24-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3320-25-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3320-26-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3320-27-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3320-28-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download