darkcomet | 8792d522649c672f68fcd7ae8df6a55a7171daf2be2370d3e1c6966153cf2d7c

General

Target

cb5d869480fadf9ac88734a531f24ae3.exe
Size

384KB
MD5

cb5d869480fadf9ac88734a531f24ae3
SHA1

04a2cea38e15c21d3dc143e0f7d17ffc0432a748
SHA256

8792d522649c672f68fcd7ae8df6a55a7171daf2be2370d3e1c6966153cf2d7c
SHA512

fe8515c4b734561984c274b5c40daca558a0cb7ea815304a31c1567807dc04506a0de66ca141696ca7f1cff881fabbc4ecea72982106975b4c1baa7b5ada1463

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

jgcgame.ddns.net:1604

jgcgame.ddns.net:8080

Mutex

DC_MUTEX-YKH6571

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
uRgFclvSN3Xu
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:

cb5d869480fadf9ac88734a531f24ae3.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"	cb5d869480fadf9ac88734a531f24ae3.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 2 IoCs

Processes:

msdcsc.exemsdcsc.exe

pid process

4048 msdcsc.exe
1260 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
4048	msdcsc.exe
1260	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:

cb5d869480fadf9ac88734a531f24ae3.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2627584638-3284755310-3019450177-1000\Control Panel\International\Geo\Nation	cb5d869480fadf9ac88734a531f24ae3.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 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cb5d869480fadf9ac88734a531f24ae3.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2627584638-3284755310-3019450177-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	cb5d869480fadf9ac88734a531f24ae3.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

cb5d869480fadf9ac88734a531f24ae3.exemsdcsc.exe

description	pid	process	target process
PID 4008 set thread context of 2312	4008	cb5d869480fadf9ac88734a531f24ae3.exe	cb5d869480fadf9ac88734a531f24ae3.exe
PID 4048 set thread context of 1260	4048	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:

cb5d869480fadf9ac88734a531f24ae3.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance	cb5d869480fadf9ac88734a531f24ae3.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

1260 msdcsc.exe

pid	process
1260	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

cb5d869480fadf9ac88734a531f24ae3.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeSecurityPrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeTakeOwnershipPrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeLoadDriverPrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeSystemProfilePrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeSystemtimePrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeProfSingleProcessPrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeIncBasePriorityPrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeCreatePagefilePrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeBackupPrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeRestorePrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeShutdownPrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeDebugPrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeSystemEnvironmentPrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeChangeNotifyPrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeRemoteShutdownPrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeUndockPrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeManageVolumePrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeImpersonatePrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeCreateGlobalPrivilege	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: 33	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: 34	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: 35	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: 36	2312	cb5d869480fadf9ac88734a531f24ae3.exe
Token: SeIncreaseQuotaPrivilege	1260	msdcsc.exe
Token: SeSecurityPrivilege	1260	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1260	msdcsc.exe
Token: SeLoadDriverPrivilege	1260	msdcsc.exe
Token: SeSystemProfilePrivilege	1260	msdcsc.exe
Token: SeSystemtimePrivilege	1260	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1260	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1260	msdcsc.exe
Token: SeCreatePagefilePrivilege	1260	msdcsc.exe
Token: SeBackupPrivilege	1260	msdcsc.exe
Token: SeRestorePrivilege	1260	msdcsc.exe
Token: SeShutdownPrivilege	1260	msdcsc.exe
Token: SeDebugPrivilege	1260	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1260	msdcsc.exe
Token: SeChangeNotifyPrivilege	1260	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1260	msdcsc.exe
Token: SeUndockPrivilege	1260	msdcsc.exe
Token: SeManageVolumePrivilege	1260	msdcsc.exe
Token: SeImpersonatePrivilege	1260	msdcsc.exe
Token: SeCreateGlobalPrivilege	1260	msdcsc.exe
Token: 33	1260	msdcsc.exe
Token: 34	1260	msdcsc.exe
Token: 35	1260	msdcsc.exe
Token: 36	1260	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1260 msdcsc.exe

pid	process
1260	msdcsc.exe

Suspicious use of WriteProcessMemory 47 IoCs

Processes:

cb5d869480fadf9ac88734a531f24ae3.execb5d869480fadf9ac88734a531f24ae3.execmd.execmd.exemsdcsc.exemsdcsc.exe

description	pid	process	target process
PID 4008 wrote to memory of 2312	4008	cb5d869480fadf9ac88734a531f24ae3.exe	cb5d869480fadf9ac88734a531f24ae3.exe
PID 4008 wrote to memory of 2312	4008	cb5d869480fadf9ac88734a531f24ae3.exe	cb5d869480fadf9ac88734a531f24ae3.exe
PID 4008 wrote to memory of 2312	4008	cb5d869480fadf9ac88734a531f24ae3.exe	cb5d869480fadf9ac88734a531f24ae3.exe
PID 4008 wrote to memory of 2312	4008	cb5d869480fadf9ac88734a531f24ae3.exe	cb5d869480fadf9ac88734a531f24ae3.exe
PID 4008 wrote to memory of 2312	4008	cb5d869480fadf9ac88734a531f24ae3.exe	cb5d869480fadf9ac88734a531f24ae3.exe
PID 2312 wrote to memory of 2604	2312	cb5d869480fadf9ac88734a531f24ae3.exe	cmd.exe
PID 2312 wrote to memory of 2604	2312	cb5d869480fadf9ac88734a531f24ae3.exe	cmd.exe
PID 2312 wrote to memory of 2604	2312	cb5d869480fadf9ac88734a531f24ae3.exe	cmd.exe
PID 2312 wrote to memory of 2616	2312	cb5d869480fadf9ac88734a531f24ae3.exe	cmd.exe
PID 2312 wrote to memory of 2616	2312	cb5d869480fadf9ac88734a531f24ae3.exe	cmd.exe
PID 2312 wrote to memory of 2616	2312	cb5d869480fadf9ac88734a531f24ae3.exe	cmd.exe
PID 2616 wrote to memory of 3944	2616	cmd.exe	attrib.exe
PID 2616 wrote to memory of 3944	2616	cmd.exe	attrib.exe
PID 2616 wrote to memory of 3944	2616	cmd.exe	attrib.exe
PID 2604 wrote to memory of 3504	2604	cmd.exe	attrib.exe
PID 2604 wrote to memory of 3504	2604	cmd.exe	attrib.exe
PID 2604 wrote to memory of 3504	2604	cmd.exe	attrib.exe
PID 2312 wrote to memory of 4048	2312	cb5d869480fadf9ac88734a531f24ae3.exe	msdcsc.exe
PID 2312 wrote to memory of 4048	2312	cb5d869480fadf9ac88734a531f24ae3.exe	msdcsc.exe
PID 2312 wrote to memory of 4048	2312	cb5d869480fadf9ac88734a531f24ae3.exe	msdcsc.exe
PID 4048 wrote to memory of 1260	4048	msdcsc.exe	msdcsc.exe
PID 4048 wrote to memory of 1260	4048	msdcsc.exe	msdcsc.exe
PID 4048 wrote to memory of 1260	4048	msdcsc.exe	msdcsc.exe
PID 4048 wrote to memory of 1260	4048	msdcsc.exe	msdcsc.exe
PID 4048 wrote to memory of 1260	4048	msdcsc.exe	msdcsc.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	msdcsc.exe	notepad.exe
PID 1260 wrote to memory of 3112	1260	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

3944 attrib.exe
3504 attrib.exe

pid	process
3944	attrib.exe
3504	attrib.exe

C:\Users\Admin\AppData\Local\Temp\cb5d869480fadf9ac88734a531f24ae3.exe
"C:\Users\Admin\AppData\Local\Temp\cb5d869480fadf9ac88734a531f24ae3.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4008

C:\Users\Admin\AppData\Local\Temp\cb5d869480fadf9ac88734a531f24ae3.exe
"C:\Users\Admin\AppData\Local\Temp\cb5d869480fadf9ac88734a531f24ae3.exe"
2⤵
- 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:2312

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\cb5d869480fadf9ac88734a531f24ae3.exe" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:2604

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\cb5d869480fadf9ac88734a531f24ae3.exe" +s +h
4⤵
- Views/modifies file attributes
PID:3504

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:2616

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
4⤵
- Views/modifies file attributes
PID:3944

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4048

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
4⤵
- Modifies firewall policy service
- Modifies security service
- Executes dropped EXE
- Windows security modification
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1260

C:\Windows\SysWOW64\notepad.exe
notepad
5⤵
PID:3112

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

2

T1158

Modify Existing Service

2

T1031

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Disabling Security Tools

2

T1089

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
cb5d869480fadf9ac88734a531f24ae3

SHA1
04a2cea38e15c21d3dc143e0f7d17ffc0432a748

SHA256
8792d522649c672f68fcd7ae8df6a55a7171daf2be2370d3e1c6966153cf2d7c

SHA512
fe8515c4b734561984c274b5c40daca558a0cb7ea815304a31c1567807dc04506a0de66ca141696ca7f1cff881fabbc4ecea72982106975b4c1baa7b5ada1463

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
cb5d869480fadf9ac88734a531f24ae3

SHA1
04a2cea38e15c21d3dc143e0f7d17ffc0432a748

SHA256
8792d522649c672f68fcd7ae8df6a55a7171daf2be2370d3e1c6966153cf2d7c

SHA512
fe8515c4b734561984c274b5c40daca558a0cb7ea815304a31c1567807dc04506a0de66ca141696ca7f1cff881fabbc4ecea72982106975b4c1baa7b5ada1463

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
cb5d869480fadf9ac88734a531f24ae3

SHA1
04a2cea38e15c21d3dc143e0f7d17ffc0432a748

SHA256
8792d522649c672f68fcd7ae8df6a55a7171daf2be2370d3e1c6966153cf2d7c

SHA512
fe8515c4b734561984c274b5c40daca558a0cb7ea815304a31c1567807dc04506a0de66ca141696ca7f1cff881fabbc4ecea72982106975b4c1baa7b5ada1463

Download Submit
memory/1260-13-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1260-11-0x000000000048F888-mapping.dmp

Download
memory/2312-2-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-0-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2312-1-0x000000000048F888-mapping.dmp

Download
memory/2604-3-0x0000000000000000-mapping.dmp

Download
memory/2616-4-0x0000000000000000-mapping.dmp

Download
memory/3112-14-0x0000000000000000-mapping.dmp

Download
memory/3112-15-0x0000000003180000-0x0000000003181000-memory.dmp

Filesize
4KB

Download
memory/3112-16-0x0000000000000000-mapping.dmp

Download
memory/3504-6-0x0000000000000000-mapping.dmp

Download
memory/3944-5-0x0000000000000000-mapping.dmp

Download
memory/4048-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads