darkcomet | cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e

General

Target

cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Size

690KB
MD5

723baed58f250509d277de75a3178be8
SHA1

d5c190e5acb7f4e8d9f6286e4f48fa9bfcd1325c
SHA256

cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e
SHA512

01af4ae85aad93e59cc93f82f82c2fc8f7b4f9166a7abdcb32b85dfd417dd379064aead960746b51d0f147fdec64ea261470de31e6fb67add96836a0651c954b

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

fantomazzz.ddns.net:1604

Mutex

DC_MUTEX-H4MJNYC

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
zASJD9aEWq6M
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:

cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.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\\Roaming\\MSDCSC\\msdcsc.exe"	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

msdcsc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.exe

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Modify Existing Service
T1031

Processes:

msdcsc.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" msdcsc.exe
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Disables RegEdit via registry modification
evasion
Disables Task Manager via registry modification
evasion
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1660 msdcsc.exe
Sets file to hidden 1 TTPs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	msdcsc.exe

pid	process
1660	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:

cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\International\Geo\Nation	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

msdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe"	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\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:

cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

1660 msdcsc.exe

pid	process
1660	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeSecurityPrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeTakeOwnershipPrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeLoadDriverPrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeSystemProfilePrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeSystemtimePrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeProfSingleProcessPrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeIncBasePriorityPrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeCreatePagefilePrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeBackupPrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeRestorePrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeShutdownPrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeDebugPrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeSystemEnvironmentPrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeChangeNotifyPrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeRemoteShutdownPrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeUndockPrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeManageVolumePrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeImpersonatePrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeCreateGlobalPrivilege	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: 33	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: 34	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: 35	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: 36	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
Token: SeIncreaseQuotaPrivilege	1660	msdcsc.exe
Token: SeSecurityPrivilege	1660	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1660	msdcsc.exe
Token: SeLoadDriverPrivilege	1660	msdcsc.exe
Token: SeSystemProfilePrivilege	1660	msdcsc.exe
Token: SeSystemtimePrivilege	1660	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1660	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1660	msdcsc.exe
Token: SeCreatePagefilePrivilege	1660	msdcsc.exe
Token: SeBackupPrivilege	1660	msdcsc.exe
Token: SeRestorePrivilege	1660	msdcsc.exe
Token: SeShutdownPrivilege	1660	msdcsc.exe
Token: SeDebugPrivilege	1660	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1660	msdcsc.exe
Token: SeChangeNotifyPrivilege	1660	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1660	msdcsc.exe
Token: SeUndockPrivilege	1660	msdcsc.exe
Token: SeManageVolumePrivilege	1660	msdcsc.exe
Token: SeImpersonatePrivilege	1660	msdcsc.exe
Token: SeCreateGlobalPrivilege	1660	msdcsc.exe
Token: 33	1660	msdcsc.exe
Token: 34	1660	msdcsc.exe
Token: 35	1660	msdcsc.exe
Token: 36	1660	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1660 msdcsc.exe

pid	process
1660	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 900 wrote to memory of 364	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe	cmd.exe
PID 900 wrote to memory of 364	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe	cmd.exe
PID 900 wrote to memory of 364	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe	cmd.exe
PID 900 wrote to memory of 1036	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe	cmd.exe
PID 900 wrote to memory of 1036	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe	cmd.exe
PID 900 wrote to memory of 1036	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe	cmd.exe
PID 1036 wrote to memory of 1404	1036	cmd.exe	attrib.exe
PID 1036 wrote to memory of 1404	1036	cmd.exe	attrib.exe
PID 1036 wrote to memory of 1404	1036	cmd.exe	attrib.exe
PID 364 wrote to memory of 1424	364	cmd.exe	attrib.exe
PID 364 wrote to memory of 1424	364	cmd.exe	attrib.exe
PID 364 wrote to memory of 1424	364	cmd.exe	attrib.exe
PID 900 wrote to memory of 1660	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe	msdcsc.exe
PID 900 wrote to memory of 1660	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe	msdcsc.exe
PID 900 wrote to memory of 1660	900	cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe	msdcsc.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe
PID 1660 wrote to memory of 1912	1660	msdcsc.exe	notepad.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

Processes:

msdcsc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	msdcsc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	msdcsc.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1424 attrib.exe
1404 attrib.exe

pid	process
1424	attrib.exe
1404	attrib.exe

C:\Users\Admin\AppData\Local\Temp\cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe
"C:\Users\Admin\AppData\Local\Temp\cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.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:900

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:364

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e.exe" +s +h
3⤵
- Views/modifies file attributes
PID:1424

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:1036

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:1404

C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe"
2⤵
- Modifies firewall policy service
- Modifies security service
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1660

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1912

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

2

T1031

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

7

T1112

Disabling Security Tools

2

T1089

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\Roaming\MSDCSC\msdcsc.exe
MD5
723baed58f250509d277de75a3178be8

SHA1
d5c190e5acb7f4e8d9f6286e4f48fa9bfcd1325c

SHA256
cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e

SHA512
01af4ae85aad93e59cc93f82f82c2fc8f7b4f9166a7abdcb32b85dfd417dd379064aead960746b51d0f147fdec64ea261470de31e6fb67add96836a0651c954b

Download Submit
C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe
MD5
723baed58f250509d277de75a3178be8

SHA1
d5c190e5acb7f4e8d9f6286e4f48fa9bfcd1325c

SHA256
cee4e670f5caa5f4da865a0d00549f261382aa383c0debc1f7a4d0cd183ddd9e

SHA512
01af4ae85aad93e59cc93f82f82c2fc8f7b4f9166a7abdcb32b85dfd417dd379064aead960746b51d0f147fdec64ea261470de31e6fb67add96836a0651c954b

Download Submit
memory/364-115-0x0000000000000000-mapping.dmp

Download
memory/900-114-0x0000000000590000-0x00000000006DA000-memory.dmp

Filesize
1.3MB

Download
memory/1036-116-0x0000000000000000-mapping.dmp

Download
memory/1404-117-0x0000000000000000-mapping.dmp

Download
memory/1424-118-0x0000000000000000-mapping.dmp

Download
memory/1660-119-0x0000000000000000-mapping.dmp

Download
memory/1660-123-0x00000000021B0000-0x00000000021B1000-memory.dmp

Filesize
4KB

Download
memory/1912-122-0x0000000000000000-mapping.dmp

Download
memory/1912-124-0x0000000000440000-0x0000000000441000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads