darkcomet | c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06

General

Target

c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe
Size

842KB
MD5

db846fc767bbc92ff7d3eac3b66a5198
SHA1

98206308068bd214ea4a0154e37cc5327c3fcdf0
SHA256

c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06
SHA512

55528a8e6e4495d2844bad5b21fbdb46d79e949ee11938ceae263197a5cc4a34744da1c4374089fe364c447d9b07dfbce4f96df1463e4f6fa20a7bd7244bf63e
SSDEEP

24576:h04aY7IxRCHL7WW33V6ivu6+JuQPoqhxqjmZse:h8cIHyL6ViW6yoq7qjmie

Score

10^/10

darkcomet botnet persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

BotNet

C2

psychozerker.no-ip.biz:1604

Mutex

DC_MUTEX-EJJAAGS

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
pq0xoo1jfSUP
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:

msvc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msvc.exe

Executes dropped EXE 2 IoCs

Processes:

msvc.exemsdcsc.exe

pid process

3640 msvc.exe
1040 msdcsc.exe

pid	process
3640	msvc.exe
1040	msdcsc.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exemsvc.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	msvc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msvc.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msvc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Drops file in System32 directory 4 IoCs

Processes:

c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exemsvc.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\msvc.exe	c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	msvc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	msvc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	msvc.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:

msvc.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ msvc.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

reg.exe

pid process

3280 reg.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe

pid process

1192 c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe

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

pid	process
3280	reg.exe

pid	process
1192	c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

msvc.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3640	msvc.exe
Token: SeSecurityPrivilege	3640	msvc.exe
Token: SeTakeOwnershipPrivilege	3640	msvc.exe
Token: SeLoadDriverPrivilege	3640	msvc.exe
Token: SeSystemProfilePrivilege	3640	msvc.exe
Token: SeSystemtimePrivilege	3640	msvc.exe
Token: SeProfSingleProcessPrivilege	3640	msvc.exe
Token: SeIncBasePriorityPrivilege	3640	msvc.exe
Token: SeCreatePagefilePrivilege	3640	msvc.exe
Token: SeBackupPrivilege	3640	msvc.exe
Token: SeRestorePrivilege	3640	msvc.exe
Token: SeShutdownPrivilege	3640	msvc.exe
Token: SeDebugPrivilege	3640	msvc.exe
Token: SeSystemEnvironmentPrivilege	3640	msvc.exe
Token: SeChangeNotifyPrivilege	3640	msvc.exe
Token: SeRemoteShutdownPrivilege	3640	msvc.exe
Token: SeUndockPrivilege	3640	msvc.exe
Token: SeManageVolumePrivilege	3640	msvc.exe
Token: SeImpersonatePrivilege	3640	msvc.exe
Token: SeCreateGlobalPrivilege	3640	msvc.exe
Token: 33	3640	msvc.exe
Token: 34	3640	msvc.exe
Token: 35	3640	msvc.exe
Token: 36	3640	msvc.exe
Token: SeIncreaseQuotaPrivilege	1040	msdcsc.exe
Token: SeSecurityPrivilege	1040	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1040	msdcsc.exe
Token: SeLoadDriverPrivilege	1040	msdcsc.exe
Token: SeSystemProfilePrivilege	1040	msdcsc.exe
Token: SeSystemtimePrivilege	1040	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1040	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1040	msdcsc.exe
Token: SeCreatePagefilePrivilege	1040	msdcsc.exe
Token: SeBackupPrivilege	1040	msdcsc.exe
Token: SeRestorePrivilege	1040	msdcsc.exe
Token: SeShutdownPrivilege	1040	msdcsc.exe
Token: SeDebugPrivilege	1040	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1040	msdcsc.exe
Token: SeChangeNotifyPrivilege	1040	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1040	msdcsc.exe
Token: SeUndockPrivilege	1040	msdcsc.exe
Token: SeManageVolumePrivilege	1040	msdcsc.exe
Token: SeImpersonatePrivilege	1040	msdcsc.exe
Token: SeCreateGlobalPrivilege	1040	msdcsc.exe
Token: 33	1040	msdcsc.exe
Token: 34	1040	msdcsc.exe
Token: 35	1040	msdcsc.exe
Token: 36	1040	msdcsc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exemsdcsc.exe

pid process

1192 c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe
1040 msdcsc.exe

pid	process
1192	c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe
1040	msdcsc.exe

Suspicious use of WriteProcessMemory 51 IoCs

Processes:

c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.execmd.exemsvc.exemsdcsc.exe

description	pid	process	target process
PID 1192 wrote to memory of 2004	1192	c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe	cmd.exe
PID 1192 wrote to memory of 2004	1192	c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe	cmd.exe
PID 1192 wrote to memory of 2004	1192	c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe	cmd.exe
PID 2004 wrote to memory of 3280	2004	cmd.exe	reg.exe
PID 2004 wrote to memory of 3280	2004	cmd.exe	reg.exe
PID 2004 wrote to memory of 3280	2004	cmd.exe	reg.exe
PID 1192 wrote to memory of 3640	1192	c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe	msvc.exe
PID 1192 wrote to memory of 3640	1192	c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe	msvc.exe
PID 1192 wrote to memory of 3640	1192	c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe	msvc.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 4124	3640	msvc.exe	notepad.exe
PID 3640 wrote to memory of 1040	3640	msvc.exe	msdcsc.exe
PID 3640 wrote to memory of 1040	3640	msvc.exe	msdcsc.exe
PID 3640 wrote to memory of 1040	3640	msvc.exe	msdcsc.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe
PID 1040 wrote to memory of 812	1040	msdcsc.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe
"C:\Users\Admin\AppData\Local\Temp\c6f1d086b0efdd127c9f66422df62a9dd6730a4d6ff33dc7d6246f0ba420cc06.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1192

C:\Windows\SysWOW64\cmd.exe
cmd /c REG ADD HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v Startup Key /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\services.exe /f
2⤵
- Suspicious use of WriteProcessMemory
PID:2004

C:\Windows\SysWOW64\reg.exe
REG ADD HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v Startup Key /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\services.exe /f
3⤵
- Modifies registry key
PID:3280

C:\Windows\SysWOW64\msvc.exe
"C:\Windows\system32\msvc.exe"
2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3640

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:4124

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
"C:\Windows\system32\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1040

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:812

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

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:\Windows\SysWOW64\MSDCSC\msdcsc.exe
Filesize
658KB

MD5
8f4bbb731381a70550b4114813d25eff

SHA1
5633841905950669dff2dc442031abc23e71c071

SHA256
ba92ef73fd0b6e50aef46b8d696063daf0a4e5cd77210e5b30b8d42d68390c8a

SHA512
94a1b0f2a16bc177b293c9dfd2a1b20a034288c9ad41f5965b2f4535354735211261bddf09add86008e6b8baa5c6fe92d6f0669c12663c26aa9083f20365cdf7

Download Submit
C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
Filesize
658KB

MD5
8f4bbb731381a70550b4114813d25eff

SHA1
5633841905950669dff2dc442031abc23e71c071

SHA256
ba92ef73fd0b6e50aef46b8d696063daf0a4e5cd77210e5b30b8d42d68390c8a

SHA512
94a1b0f2a16bc177b293c9dfd2a1b20a034288c9ad41f5965b2f4535354735211261bddf09add86008e6b8baa5c6fe92d6f0669c12663c26aa9083f20365cdf7

Download Submit
C:\Windows\SysWOW64\msvc.exe
Filesize
658KB

MD5
8f4bbb731381a70550b4114813d25eff

SHA1
5633841905950669dff2dc442031abc23e71c071

SHA256
ba92ef73fd0b6e50aef46b8d696063daf0a4e5cd77210e5b30b8d42d68390c8a

SHA512
94a1b0f2a16bc177b293c9dfd2a1b20a034288c9ad41f5965b2f4535354735211261bddf09add86008e6b8baa5c6fe92d6f0669c12663c26aa9083f20365cdf7

Download Submit
C:\Windows\SysWOW64\msvc.exe
Filesize
658KB

MD5
8f4bbb731381a70550b4114813d25eff

SHA1
5633841905950669dff2dc442031abc23e71c071

SHA256
ba92ef73fd0b6e50aef46b8d696063daf0a4e5cd77210e5b30b8d42d68390c8a

SHA512
94a1b0f2a16bc177b293c9dfd2a1b20a034288c9ad41f5965b2f4535354735211261bddf09add86008e6b8baa5c6fe92d6f0669c12663c26aa9083f20365cdf7

Download Submit
memory/812-143-0x0000000000000000-mapping.dmp

Download
memory/1040-140-0x0000000000000000-mapping.dmp

Download
memory/2004-134-0x0000000000000000-mapping.dmp

Download
memory/3280-135-0x0000000000000000-mapping.dmp

Download
memory/3640-136-0x0000000000000000-mapping.dmp

Download
memory/4124-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads