darkcomet | 441da136f0710485983eb1bc04622fbea2b7b97889242f62c5bee39e1116b88f

General

Target

dc.ex_.exe
Size

232KB
MD5

723b2c572628265eac3aae9e9a447632
SHA1

3a216ecf10f6973740f2dba2080f740d8b7d208a
SHA256

441da136f0710485983eb1bc04622fbea2b7b97889242f62c5bee39e1116b88f
SHA512

99dd2c715304e4bb1649c7fd00b45a77e54be398f2e501d3699bcfa6abf91746f14adf312189e032c75298ed12661c7f9e59ef2cff17ddc906ac94ab75efe05e

Score

10^/10

darkcomet persistence rat trojan upx

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

T1004

Modify Registry

T1112

Processes:

dc.ex_.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\\Local\\Temp\\DCSCMIN\\IMDCSC.exe"	dc.ex_.exe

Executes dropped EXE 1 IoCs

Processes:

IMDCSC.exe

pid process

904 IMDCSC.exe

pid	process
904	IMDCSC.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe	upx
\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe	upx
C:\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe	upx
C:\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe	upx

Loads dropped DLL 2 IoCs

Processes:

dc.ex_.exe

pid process

1496 dc.ex_.exe
1496 dc.ex_.exe

pid	process
1496	dc.ex_.exe
1496	dc.ex_.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

dc.ex_.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoupdatepath = "C:\\Users\\Admin\\AppData\\Local\\Temp\\DCSCMIN\\IMDCSC.exe"	dc.ex_.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 46 IoCs

Processes:

dc.ex_.exeIMDCSC.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1496	dc.ex_.exe
Token: SeSecurityPrivilege	1496	dc.ex_.exe
Token: SeTakeOwnershipPrivilege	1496	dc.ex_.exe
Token: SeLoadDriverPrivilege	1496	dc.ex_.exe
Token: SeSystemProfilePrivilege	1496	dc.ex_.exe
Token: SeSystemtimePrivilege	1496	dc.ex_.exe
Token: SeProfSingleProcessPrivilege	1496	dc.ex_.exe
Token: SeIncBasePriorityPrivilege	1496	dc.ex_.exe
Token: SeCreatePagefilePrivilege	1496	dc.ex_.exe
Token: SeBackupPrivilege	1496	dc.ex_.exe
Token: SeRestorePrivilege	1496	dc.ex_.exe
Token: SeShutdownPrivilege	1496	dc.ex_.exe
Token: SeDebugPrivilege	1496	dc.ex_.exe
Token: SeSystemEnvironmentPrivilege	1496	dc.ex_.exe
Token: SeChangeNotifyPrivilege	1496	dc.ex_.exe
Token: SeRemoteShutdownPrivilege	1496	dc.ex_.exe
Token: SeUndockPrivilege	1496	dc.ex_.exe
Token: SeManageVolumePrivilege	1496	dc.ex_.exe
Token: SeImpersonatePrivilege	1496	dc.ex_.exe
Token: SeCreateGlobalPrivilege	1496	dc.ex_.exe
Token: 33	1496	dc.ex_.exe
Token: 34	1496	dc.ex_.exe
Token: 35	1496	dc.ex_.exe
Token: SeIncreaseQuotaPrivilege	904	IMDCSC.exe
Token: SeSecurityPrivilege	904	IMDCSC.exe
Token: SeTakeOwnershipPrivilege	904	IMDCSC.exe
Token: SeLoadDriverPrivilege	904	IMDCSC.exe
Token: SeSystemProfilePrivilege	904	IMDCSC.exe
Token: SeSystemtimePrivilege	904	IMDCSC.exe
Token: SeProfSingleProcessPrivilege	904	IMDCSC.exe
Token: SeIncBasePriorityPrivilege	904	IMDCSC.exe
Token: SeCreatePagefilePrivilege	904	IMDCSC.exe
Token: SeBackupPrivilege	904	IMDCSC.exe
Token: SeRestorePrivilege	904	IMDCSC.exe
Token: SeShutdownPrivilege	904	IMDCSC.exe
Token: SeDebugPrivilege	904	IMDCSC.exe
Token: SeSystemEnvironmentPrivilege	904	IMDCSC.exe
Token: SeChangeNotifyPrivilege	904	IMDCSC.exe
Token: SeRemoteShutdownPrivilege	904	IMDCSC.exe
Token: SeUndockPrivilege	904	IMDCSC.exe
Token: SeManageVolumePrivilege	904	IMDCSC.exe
Token: SeImpersonatePrivilege	904	IMDCSC.exe
Token: SeCreateGlobalPrivilege	904	IMDCSC.exe
Token: 33	904	IMDCSC.exe
Token: 34	904	IMDCSC.exe
Token: 35	904	IMDCSC.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

IMDCSC.exe

pid process

904 IMDCSC.exe

pid	process
904	IMDCSC.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

dc.ex_.exe

description	pid	process	target process
PID 1496 wrote to memory of 904	1496	dc.ex_.exe	IMDCSC.exe
PID 1496 wrote to memory of 904	1496	dc.ex_.exe	IMDCSC.exe
PID 1496 wrote to memory of 904	1496	dc.ex_.exe	IMDCSC.exe
PID 1496 wrote to memory of 904	1496	dc.ex_.exe	IMDCSC.exe

C:\Users\Admin\AppData\Local\Temp\dc.ex_.exe
"C:\Users\Admin\AppData\Local\Temp\dc.ex_.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1496

C:\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe
"C:\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:904

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe
MD5
723b2c572628265eac3aae9e9a447632

SHA1
3a216ecf10f6973740f2dba2080f740d8b7d208a

SHA256
441da136f0710485983eb1bc04622fbea2b7b97889242f62c5bee39e1116b88f

SHA512
99dd2c715304e4bb1649c7fd00b45a77e54be398f2e501d3699bcfa6abf91746f14adf312189e032c75298ed12661c7f9e59ef2cff17ddc906ac94ab75efe05e

Download Submit
C:\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe
MD5
723b2c572628265eac3aae9e9a447632

SHA1
3a216ecf10f6973740f2dba2080f740d8b7d208a

SHA256
441da136f0710485983eb1bc04622fbea2b7b97889242f62c5bee39e1116b88f

SHA512
99dd2c715304e4bb1649c7fd00b45a77e54be398f2e501d3699bcfa6abf91746f14adf312189e032c75298ed12661c7f9e59ef2cff17ddc906ac94ab75efe05e

Download Submit
\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe
MD5
723b2c572628265eac3aae9e9a447632

SHA1
3a216ecf10f6973740f2dba2080f740d8b7d208a

SHA256
441da136f0710485983eb1bc04622fbea2b7b97889242f62c5bee39e1116b88f

SHA512
99dd2c715304e4bb1649c7fd00b45a77e54be398f2e501d3699bcfa6abf91746f14adf312189e032c75298ed12661c7f9e59ef2cff17ddc906ac94ab75efe05e

Download Submit
\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe
MD5
723b2c572628265eac3aae9e9a447632

SHA1
3a216ecf10f6973740f2dba2080f740d8b7d208a

SHA256
441da136f0710485983eb1bc04622fbea2b7b97889242f62c5bee39e1116b88f

SHA512
99dd2c715304e4bb1649c7fd00b45a77e54be398f2e501d3699bcfa6abf91746f14adf312189e032c75298ed12661c7f9e59ef2cff17ddc906ac94ab75efe05e

Download Submit
memory/904-2-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads