darkcomet | ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0

General

Target

ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe
Size

1.1MB
MD5

beee246f5eae578818a63ce9178f0f0c
SHA1

062f953736a7c6dd558eaf054a9f59aab431b7b2
SHA256

ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0
SHA512

f4eed062f24c213eab4f0d9296df2a663b73583eb1ec00ea610765303c570b6628a3102f4eba7a83497a61f9f45aeb160ec7b60d8c0c3008fd77b11574da0b14
SSDEEP

24576:4vOTggIRfmQX3zRYC6FVZPv+FWe4Ys/E:0jYlDZ3+UT/E

Score

10^/10

darkcomet guest16 persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

connor122.no-ip.biz:3460

Mutex

DC_MUTEX-MMYCS2M

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
bvvobbmQUgdP
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

Processes:

svchost.exe

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

Executes dropped EXE 2 IoCs

Processes:

svchost.exemsdcsc.exe

pid process

1696 svchost.exe
3348 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:

svchost.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation svchost.exe

pid	process
1696	svchost.exe
3348	msdcsc.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	svchost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exesvchost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1 = "C:\\Users\\Admin\\AppData\\Roaming\\ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe"	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe

description	pid	process	target process
PID 400 set thread context of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.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:

svchost.exe

description ioc process

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

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

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

svchost.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1696	svchost.exe
Token: SeSecurityPrivilege	1696	svchost.exe
Token: SeTakeOwnershipPrivilege	1696	svchost.exe
Token: SeLoadDriverPrivilege	1696	svchost.exe
Token: SeSystemProfilePrivilege	1696	svchost.exe
Token: SeSystemtimePrivilege	1696	svchost.exe
Token: SeProfSingleProcessPrivilege	1696	svchost.exe
Token: SeIncBasePriorityPrivilege	1696	svchost.exe
Token: SeCreatePagefilePrivilege	1696	svchost.exe
Token: SeBackupPrivilege	1696	svchost.exe
Token: SeRestorePrivilege	1696	svchost.exe
Token: SeShutdownPrivilege	1696	svchost.exe
Token: SeDebugPrivilege	1696	svchost.exe
Token: SeSystemEnvironmentPrivilege	1696	svchost.exe
Token: SeChangeNotifyPrivilege	1696	svchost.exe
Token: SeRemoteShutdownPrivilege	1696	svchost.exe
Token: SeUndockPrivilege	1696	svchost.exe
Token: SeManageVolumePrivilege	1696	svchost.exe
Token: SeImpersonatePrivilege	1696	svchost.exe
Token: SeCreateGlobalPrivilege	1696	svchost.exe
Token: 33	1696	svchost.exe
Token: 34	1696	svchost.exe
Token: 35	1696	svchost.exe
Token: 36	1696	svchost.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exesvchost.exe

description	pid	process	target process
PID 400 wrote to memory of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.exe
PID 400 wrote to memory of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.exe
PID 400 wrote to memory of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.exe
PID 400 wrote to memory of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.exe
PID 400 wrote to memory of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.exe
PID 400 wrote to memory of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.exe
PID 400 wrote to memory of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.exe
PID 400 wrote to memory of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.exe
PID 400 wrote to memory of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.exe
PID 400 wrote to memory of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.exe
PID 400 wrote to memory of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.exe
PID 400 wrote to memory of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.exe
PID 400 wrote to memory of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.exe
PID 400 wrote to memory of 1696	400	ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe	svchost.exe
PID 1696 wrote to memory of 3348	1696	svchost.exe	msdcsc.exe
PID 1696 wrote to memory of 3348	1696	svchost.exe	msdcsc.exe
PID 1696 wrote to memory of 3348	1696	svchost.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe
"C:\Users\Admin\AppData\Local\Temp\ca95dbaff728d39facee54c3d97e445ccc97037ef13e63fab534730349d424c0.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:400

C:\Users\Admin\AppData\Local\Temp\svchost.exe
C:\Users\Admin\AppData\Local\Temp\svchost.exe
2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1696

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
PID:3348

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

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\svchost.exe
Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Users\Admin\AppData\Local\Temp\svchost.exe
Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/400-132-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/400-141-0x00000000752B0000-0x0000000075861000-memory.dmp

Filesize
5.7MB

Download
memory/1696-138-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1696-140-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1696-137-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1696-142-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1696-134-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1696-133-0x0000000000000000-mapping.dmp

Download
memory/1696-146-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/3348-143-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads