darkcomet | 4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818

General

Target

4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Size

690KB
MD5

6b5b75a9e7c39b3737029ac0bde1c152
SHA1

def2b6e36621133659ac94cc9bc60cbe7743c6ce
SHA256

4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818
SHA512

d0f74e89c78a3baf9907799790b0aba7a7ed8594db502397e52106f0a114aad5c4435a49a59f56a785427b06a59f28636d3de3e6125a82a34b3f07fedc6a4d90

Score

10^/10

darkcomet all evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

All

C2

127.0.0.1:1604

Mutex

DC_MUTEX-W1Y6BV1

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
6zPJwU2MxqV4
install
true
offline_keylogger
true
persistence
true
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

Processes:

4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.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"	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

2544 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
2544	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

Processes:

4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

2544 msdcsc.exe

pid	process
2544	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeSecurityPrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeTakeOwnershipPrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeLoadDriverPrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeSystemProfilePrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeSystemtimePrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeProfSingleProcessPrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeIncBasePriorityPrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeCreatePagefilePrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeBackupPrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeRestorePrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeShutdownPrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeDebugPrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeSystemEnvironmentPrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeChangeNotifyPrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeRemoteShutdownPrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeUndockPrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeManageVolumePrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeImpersonatePrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeCreateGlobalPrivilege	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: 33	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: 34	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: 35	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: 36	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
Token: SeIncreaseQuotaPrivilege	2544	msdcsc.exe
Token: SeSecurityPrivilege	2544	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2544	msdcsc.exe
Token: SeLoadDriverPrivilege	2544	msdcsc.exe
Token: SeSystemProfilePrivilege	2544	msdcsc.exe
Token: SeSystemtimePrivilege	2544	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2544	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2544	msdcsc.exe
Token: SeCreatePagefilePrivilege	2544	msdcsc.exe
Token: SeBackupPrivilege	2544	msdcsc.exe
Token: SeRestorePrivilege	2544	msdcsc.exe
Token: SeShutdownPrivilege	2544	msdcsc.exe
Token: SeDebugPrivilege	2544	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2544	msdcsc.exe
Token: SeChangeNotifyPrivilege	2544	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2544	msdcsc.exe
Token: SeUndockPrivilege	2544	msdcsc.exe
Token: SeManageVolumePrivilege	2544	msdcsc.exe
Token: SeImpersonatePrivilege	2544	msdcsc.exe
Token: SeCreateGlobalPrivilege	2544	msdcsc.exe
Token: 33	2544	msdcsc.exe
Token: 34	2544	msdcsc.exe
Token: 35	2544	msdcsc.exe
Token: 36	2544	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

2544 msdcsc.exe

pid	process
2544	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 2304 wrote to memory of 1888	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	cmd.exe
PID 2304 wrote to memory of 1888	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	cmd.exe
PID 2304 wrote to memory of 1888	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	cmd.exe
PID 2304 wrote to memory of 2064	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	cmd.exe
PID 2304 wrote to memory of 2064	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	cmd.exe
PID 2304 wrote to memory of 2064	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	cmd.exe
PID 1888 wrote to memory of 2612	1888	cmd.exe	attrib.exe
PID 1888 wrote to memory of 2612	1888	cmd.exe	attrib.exe
PID 1888 wrote to memory of 2612	1888	cmd.exe	attrib.exe
PID 2064 wrote to memory of 4220	2064	cmd.exe	attrib.exe
PID 2064 wrote to memory of 4220	2064	cmd.exe	attrib.exe
PID 2064 wrote to memory of 4220	2064	cmd.exe	attrib.exe
PID 2304 wrote to memory of 2544	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	msdcsc.exe
PID 2304 wrote to memory of 2544	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	msdcsc.exe
PID 2304 wrote to memory of 2544	2304	4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe	msdcsc.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe
PID 2544 wrote to memory of 4024	2544	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

4220 attrib.exe
2612 attrib.exe

pid	process
4220	attrib.exe
2612	attrib.exe

C:\Users\Admin\AppData\Local\Temp\4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe
"C:\Users\Admin\AppData\Local\Temp\4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2304

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2544

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:4024

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:2064

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1888

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
1⤵
- Views/modifies file attributes
PID:4220

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818.exe" +s +h
1⤵
- Views/modifies file attributes
PID:2612

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
6b5b75a9e7c39b3737029ac0bde1c152

SHA1
def2b6e36621133659ac94cc9bc60cbe7743c6ce

SHA256
4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818

SHA512
d0f74e89c78a3baf9907799790b0aba7a7ed8594db502397e52106f0a114aad5c4435a49a59f56a785427b06a59f28636d3de3e6125a82a34b3f07fedc6a4d90

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
6b5b75a9e7c39b3737029ac0bde1c152

SHA1
def2b6e36621133659ac94cc9bc60cbe7743c6ce

SHA256
4c44224a2703b19147751b2926bd047e82dd80305141a253418594c6f4672818

SHA512
d0f74e89c78a3baf9907799790b0aba7a7ed8594db502397e52106f0a114aad5c4435a49a59f56a785427b06a59f28636d3de3e6125a82a34b3f07fedc6a4d90

Download Submit
memory/1888-130-0x0000000000000000-mapping.dmp

Download
memory/2064-131-0x0000000000000000-mapping.dmp

Download
memory/2544-134-0x0000000000000000-mapping.dmp

Download
memory/2612-132-0x0000000000000000-mapping.dmp

Download
memory/4024-137-0x0000000000000000-mapping.dmp

Download
memory/4220-133-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads