darkcomet | 39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240

General

Target

39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Size

252KB
MD5

feed791679eb25e2ceb17ef7bcf86f59
SHA1

7c7107ca75819e7155440319b8cee889947ce494
SHA256

39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240
SHA512

3c458c1c9b072256e55b03de3c67d312383969de36118fcf729a1c800c8d05d810dd6f31f59958523c7053b718752b8666c6ed21c5d629173001a5736ac9e423

Score

10^/10

darkcomet evasion 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:

39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.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\\MSDCSC\\msdcsc.exe"	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1464 msdcsc.exe
Sets file to hidden 1 TTPs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

pid	process
1464	msdcsc.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\MSDCSC\msdcsc.exe	upx
\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe	upx

Loads dropped DLL 2 IoCs

Processes:

39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe

pid	process
1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe

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

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

1464 msdcsc.exe

pid	process
1464	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeSecurityPrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeTakeOwnershipPrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeLoadDriverPrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeSystemProfilePrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeSystemtimePrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeProfSingleProcessPrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeIncBasePriorityPrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeCreatePagefilePrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeBackupPrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeRestorePrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeShutdownPrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeDebugPrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeSystemEnvironmentPrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeChangeNotifyPrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeRemoteShutdownPrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeUndockPrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeManageVolumePrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeImpersonatePrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeCreateGlobalPrivilege	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: 33	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: 34	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: 35	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
Token: SeIncreaseQuotaPrivilege	1464	msdcsc.exe
Token: SeSecurityPrivilege	1464	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1464	msdcsc.exe
Token: SeLoadDriverPrivilege	1464	msdcsc.exe
Token: SeSystemProfilePrivilege	1464	msdcsc.exe
Token: SeSystemtimePrivilege	1464	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1464	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1464	msdcsc.exe
Token: SeCreatePagefilePrivilege	1464	msdcsc.exe
Token: SeBackupPrivilege	1464	msdcsc.exe
Token: SeRestorePrivilege	1464	msdcsc.exe
Token: SeShutdownPrivilege	1464	msdcsc.exe
Token: SeDebugPrivilege	1464	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1464	msdcsc.exe
Token: SeChangeNotifyPrivilege	1464	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1464	msdcsc.exe
Token: SeUndockPrivilege	1464	msdcsc.exe
Token: SeManageVolumePrivilege	1464	msdcsc.exe
Token: SeImpersonatePrivilege	1464	msdcsc.exe
Token: SeCreateGlobalPrivilege	1464	msdcsc.exe
Token: 33	1464	msdcsc.exe
Token: 34	1464	msdcsc.exe
Token: 35	1464	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1464 msdcsc.exe

pid	process
1464	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 1868 wrote to memory of 1924	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe	cmd.exe
PID 1868 wrote to memory of 1924	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe	cmd.exe
PID 1868 wrote to memory of 1924	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe	cmd.exe
PID 1868 wrote to memory of 1924	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe	cmd.exe
PID 1868 wrote to memory of 1128	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe	cmd.exe
PID 1868 wrote to memory of 1128	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe	cmd.exe
PID 1868 wrote to memory of 1128	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe	cmd.exe
PID 1868 wrote to memory of 1128	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe	cmd.exe
PID 1924 wrote to memory of 2036	1924	cmd.exe	attrib.exe
PID 1924 wrote to memory of 2036	1924	cmd.exe	attrib.exe
PID 1924 wrote to memory of 2036	1924	cmd.exe	attrib.exe
PID 1924 wrote to memory of 2036	1924	cmd.exe	attrib.exe
PID 1128 wrote to memory of 1188	1128	cmd.exe	attrib.exe
PID 1128 wrote to memory of 1188	1128	cmd.exe	attrib.exe
PID 1128 wrote to memory of 1188	1128	cmd.exe	attrib.exe
PID 1128 wrote to memory of 1188	1128	cmd.exe	attrib.exe
PID 1868 wrote to memory of 1464	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe	msdcsc.exe
PID 1868 wrote to memory of 1464	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe	msdcsc.exe
PID 1868 wrote to memory of 1464	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe	msdcsc.exe
PID 1868 wrote to memory of 1464	1868	39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe	msdcsc.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe
PID 1464 wrote to memory of 328	1464	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

2036 attrib.exe
1188 attrib.exe

pid	process
2036	attrib.exe
1188	attrib.exe

C:\Users\Admin\AppData\Local\Temp\39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe
"C:\Users\Admin\AppData\Local\Temp\39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1868

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1924

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240.exe" +s +h
3⤵
- Views/modifies file attributes
PID:2036

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1128

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:1188

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1464

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:328

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Hidden Files and Directories

2

T1158

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
252KB

MD5
feed791679eb25e2ceb17ef7bcf86f59

SHA1
7c7107ca75819e7155440319b8cee889947ce494

SHA256
39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240

SHA512
3c458c1c9b072256e55b03de3c67d312383969de36118fcf729a1c800c8d05d810dd6f31f59958523c7053b718752b8666c6ed21c5d629173001a5736ac9e423

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
252KB

MD5
feed791679eb25e2ceb17ef7bcf86f59

SHA1
7c7107ca75819e7155440319b8cee889947ce494

SHA256
39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240

SHA512
3c458c1c9b072256e55b03de3c67d312383969de36118fcf729a1c800c8d05d810dd6f31f59958523c7053b718752b8666c6ed21c5d629173001a5736ac9e423

Download Submit
\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
252KB

MD5
feed791679eb25e2ceb17ef7bcf86f59

SHA1
7c7107ca75819e7155440319b8cee889947ce494

SHA256
39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240

SHA512
3c458c1c9b072256e55b03de3c67d312383969de36118fcf729a1c800c8d05d810dd6f31f59958523c7053b718752b8666c6ed21c5d629173001a5736ac9e423

Download Submit
\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
252KB

MD5
feed791679eb25e2ceb17ef7bcf86f59

SHA1
7c7107ca75819e7155440319b8cee889947ce494

SHA256
39c1e6b2be52d7021d682e6eb9bcf94808e43104dd82317cd7724ba83c923240

SHA512
3c458c1c9b072256e55b03de3c67d312383969de36118fcf729a1c800c8d05d810dd6f31f59958523c7053b718752b8666c6ed21c5d629173001a5736ac9e423

Download Submit
memory/328-65-0x0000000000000000-mapping.dmp

Download
memory/1128-56-0x0000000000000000-mapping.dmp

Download
memory/1188-58-0x0000000000000000-mapping.dmp

Download
memory/1464-61-0x0000000000000000-mapping.dmp

Download
memory/1868-54-0x0000000075541000-0x0000000075543000-memory.dmp

Filesize
8KB

Download
memory/1924-55-0x0000000000000000-mapping.dmp

Download
memory/2036-57-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads