darkcomet | 0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f

Analysis

max time kernel
152s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
29/10/2022, 01:50

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General

Target
0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Size 658KB
Sample221029-b9gdbagdbr
SHA256 0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f
MD5 0ceac4cbb25166d79f308821b5306016
SHA1 ce27ddae80ce0778fdf94501b300b8a789ab54e1
SHA512 36a0abb5469dc0d38afe4ee413fb0b0873e0095bd067871627acbb9d2cefa6ddfcee634e1f27e442027aceb1b4109d9539f1847b40c2d48bb9f2d5b8bfa35325
SSDEEP 12288:O9HMeUmcufrvA3kb445UEJ2jsWiD4EvFuu4cNgZhCiZKD/XdyFh:aiBIGkbxqEcjsWiDxguehC2Si
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet test persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

test

regaletoi57.no-ip.org:1604

Mutex

DC_MUTEX-NUGSTE4

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
gfUpPDPgNYPk
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

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

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe"	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe

Executes dropped EXE 1 IoCs

pid	Process
3076	msdcsc.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe"	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeSecurityPrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeTakeOwnershipPrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeLoadDriverPrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeSystemProfilePrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeSystemtimePrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeProfSingleProcessPrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeIncBasePriorityPrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeCreatePagefilePrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeBackupPrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeRestorePrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeShutdownPrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeDebugPrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeSystemEnvironmentPrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeChangeNotifyPrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeRemoteShutdownPrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeUndockPrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeManageVolumePrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeImpersonatePrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeCreateGlobalPrivilege	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: 33	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: 34	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: 35	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: 36	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
Token: SeIncreaseQuotaPrivilege	3076	msdcsc.exe
Token: SeSecurityPrivilege	3076	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3076	msdcsc.exe
Token: SeLoadDriverPrivilege	3076	msdcsc.exe
Token: SeSystemProfilePrivilege	3076	msdcsc.exe
Token: SeSystemtimePrivilege	3076	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3076	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3076	msdcsc.exe
Token: SeCreatePagefilePrivilege	3076	msdcsc.exe
Token: SeBackupPrivilege	3076	msdcsc.exe
Token: SeRestorePrivilege	3076	msdcsc.exe
Token: SeShutdownPrivilege	3076	msdcsc.exe
Token: SeDebugPrivilege	3076	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3076	msdcsc.exe
Token: SeChangeNotifyPrivilege	3076	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3076	msdcsc.exe
Token: SeUndockPrivilege	3076	msdcsc.exe
Token: SeManageVolumePrivilege	3076	msdcsc.exe
Token: SeImpersonatePrivilege	3076	msdcsc.exe
Token: SeCreateGlobalPrivilege	3076	msdcsc.exe
Token: 33	3076	msdcsc.exe
Token: 34	3076	msdcsc.exe
Token: 35	3076	msdcsc.exe
Token: 36	3076	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3076	msdcsc.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3540 wrote to memory of 3076	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe	84
PID 3540 wrote to memory of 3076	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe	84
PID 3540 wrote to memory of 3076	3540	0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe	84

C:\Users\Admin\AppData\Local\Temp\0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.exe
"C:\Users\Admin\AppData\Local\Temp\0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f.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:3540
- C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe
  "C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3076

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

msdcsc.exe

Path C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe
Size 658KB
SHA256 0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f
MD5 0ceac4cbb25166d79f308821b5306016
SHA1 ce27ddae80ce0778fdf94501b300b8a789ab54e1
SHA512 36a0abb5469dc0d38afe4ee413fb0b0873e0095bd067871627acbb9d2cefa6ddfcee634e1f27e442027aceb1b4109d9539f1847b40c2d48bb9f2d5b8bfa35325
SSDEEP 12288:O9HMeUmcufrvA3kb445UEJ2jsWiD4EvFuu4cNgZhCiZKD/XdyFh:aiBIGkbxqEcjsWiDxguehC2Si
MD5 SHA1 SHA512 SSDEEP

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msdcsc.exe

Path C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe
Size 658KB
SHA256 0e3b505c3750827b58cd065e91cb20e85c2775325020888beb3b77f92d5b4e9f
MD5 0ceac4cbb25166d79f308821b5306016
SHA1 ce27ddae80ce0778fdf94501b300b8a789ab54e1
SHA512 36a0abb5469dc0d38afe4ee413fb0b0873e0095bd067871627acbb9d2cefa6ddfcee634e1f27e442027aceb1b4109d9539f1847b40c2d48bb9f2d5b8bfa35325
SSDEEP 12288:O9HMeUmcufrvA3kb445UEJ2jsWiD4EvFuu4cNgZhCiZKD/XdyFh:aiBIGkbxqEcjsWiDxguehC2Si
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads