darkcomet | f317a59ea553e2fbdeb151cf71b6baf33ab337f61abd2d14abfd06309dca1c4d

General

Target

f317a59ea553e2fbdeb151cf71b6baf33ab337f61abd2d14abfd06309dca1c4d.exe
Size

541KB
MD5

d4c4ba434338058c59a3086acdb2539e
SHA1

04eef30c111240b5bb1c035e022b60fc31000207
SHA256

f317a59ea553e2fbdeb151cf71b6baf33ab337f61abd2d14abfd06309dca1c4d
SHA512

8800cfa243aa1ec5933680189266ddad4ec6b05f9571f9b150a23ad3bc10e51852b4a0574eb8303724a5caff61aeabb73ad836a299e6b37b8613b98d6b739fa2

Score

10^/10

darkcomet evasion persistence rat trojan upx

Malware Config

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:

Gekon.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"	Gekon.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

msdcsc.exe

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

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 Task Manager via registry modification
evasion
Executes dropped EXE 2 IoCs

Processes:

Gekon.exemsdcsc.exe

pid process

1044 Gekon.exe
1372 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
1044	Gekon.exe
1372	msdcsc.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\Gekon.exe	upx
C:\Users\Admin\AppData\Roaming\Gekon.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx

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:

f317a59ea553e2fbdeb151cf71b6baf33ab337f61abd2d14abfd06309dca1c4d.exeGekon.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	f317a59ea553e2fbdeb151cf71b6baf33ab337f61abd2d14abfd06309dca1c4d.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	Gekon.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:

Gekon.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\\Documents\\MSDCSC\\msdcsc.exe"	Gekon.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:

Gekon.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ Gekon.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

1372 msdcsc.exe

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

pid	process
1372	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

Gekon.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1044	Gekon.exe
Token: SeSecurityPrivilege	1044	Gekon.exe
Token: SeTakeOwnershipPrivilege	1044	Gekon.exe
Token: SeLoadDriverPrivilege	1044	Gekon.exe
Token: SeSystemProfilePrivilege	1044	Gekon.exe
Token: SeSystemtimePrivilege	1044	Gekon.exe
Token: SeProfSingleProcessPrivilege	1044	Gekon.exe
Token: SeIncBasePriorityPrivilege	1044	Gekon.exe
Token: SeCreatePagefilePrivilege	1044	Gekon.exe
Token: SeBackupPrivilege	1044	Gekon.exe
Token: SeRestorePrivilege	1044	Gekon.exe
Token: SeShutdownPrivilege	1044	Gekon.exe
Token: SeDebugPrivilege	1044	Gekon.exe
Token: SeSystemEnvironmentPrivilege	1044	Gekon.exe
Token: SeChangeNotifyPrivilege	1044	Gekon.exe
Token: SeRemoteShutdownPrivilege	1044	Gekon.exe
Token: SeUndockPrivilege	1044	Gekon.exe
Token: SeManageVolumePrivilege	1044	Gekon.exe
Token: SeImpersonatePrivilege	1044	Gekon.exe
Token: SeCreateGlobalPrivilege	1044	Gekon.exe
Token: 33	1044	Gekon.exe
Token: 34	1044	Gekon.exe
Token: 35	1044	Gekon.exe
Token: 36	1044	Gekon.exe
Token: SeIncreaseQuotaPrivilege	1372	msdcsc.exe
Token: SeSecurityPrivilege	1372	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1372	msdcsc.exe
Token: SeLoadDriverPrivilege	1372	msdcsc.exe
Token: SeSystemProfilePrivilege	1372	msdcsc.exe
Token: SeSystemtimePrivilege	1372	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1372	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1372	msdcsc.exe
Token: SeCreatePagefilePrivilege	1372	msdcsc.exe
Token: SeBackupPrivilege	1372	msdcsc.exe
Token: SeRestorePrivilege	1372	msdcsc.exe
Token: SeShutdownPrivilege	1372	msdcsc.exe
Token: SeDebugPrivilege	1372	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1372	msdcsc.exe
Token: SeChangeNotifyPrivilege	1372	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1372	msdcsc.exe
Token: SeUndockPrivilege	1372	msdcsc.exe
Token: SeManageVolumePrivilege	1372	msdcsc.exe
Token: SeImpersonatePrivilege	1372	msdcsc.exe
Token: SeCreateGlobalPrivilege	1372	msdcsc.exe
Token: 33	1372	msdcsc.exe
Token: 34	1372	msdcsc.exe
Token: 35	1372	msdcsc.exe
Token: 36	1372	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1372 msdcsc.exe

pid	process
1372	msdcsc.exe

Suspicious use of WriteProcessMemory 40 IoCs

Processes:

f317a59ea553e2fbdeb151cf71b6baf33ab337f61abd2d14abfd06309dca1c4d.exeGekon.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 3568 wrote to memory of 1044	3568	f317a59ea553e2fbdeb151cf71b6baf33ab337f61abd2d14abfd06309dca1c4d.exe	Gekon.exe
PID 3568 wrote to memory of 1044	3568	f317a59ea553e2fbdeb151cf71b6baf33ab337f61abd2d14abfd06309dca1c4d.exe	Gekon.exe
PID 3568 wrote to memory of 1044	3568	f317a59ea553e2fbdeb151cf71b6baf33ab337f61abd2d14abfd06309dca1c4d.exe	Gekon.exe
PID 1044 wrote to memory of 4064	1044	Gekon.exe	cmd.exe
PID 1044 wrote to memory of 4064	1044	Gekon.exe	cmd.exe
PID 1044 wrote to memory of 4064	1044	Gekon.exe	cmd.exe
PID 1044 wrote to memory of 3068	1044	Gekon.exe	cmd.exe
PID 1044 wrote to memory of 3068	1044	Gekon.exe	cmd.exe
PID 1044 wrote to memory of 3068	1044	Gekon.exe	cmd.exe
PID 4064 wrote to memory of 1900	4064	cmd.exe	attrib.exe
PID 4064 wrote to memory of 1900	4064	cmd.exe	attrib.exe
PID 4064 wrote to memory of 1900	4064	cmd.exe	attrib.exe
PID 3068 wrote to memory of 1544	3068	cmd.exe	attrib.exe
PID 3068 wrote to memory of 1544	3068	cmd.exe	attrib.exe
PID 3068 wrote to memory of 1544	3068	cmd.exe	attrib.exe
PID 1044 wrote to memory of 1372	1044	Gekon.exe	msdcsc.exe
PID 1044 wrote to memory of 1372	1044	Gekon.exe	msdcsc.exe
PID 1044 wrote to memory of 1372	1044	Gekon.exe	msdcsc.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	msdcsc.exe	notepad.exe
PID 1372 wrote to memory of 1908	1372	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

1544 attrib.exe
1900 attrib.exe

pid	process
1544	attrib.exe
1900	attrib.exe

C:\Users\Admin\AppData\Local\Temp\f317a59ea553e2fbdeb151cf71b6baf33ab337f61abd2d14abfd06309dca1c4d.exe
"C:\Users\Admin\AppData\Local\Temp\f317a59ea553e2fbdeb151cf71b6baf33ab337f61abd2d14abfd06309dca1c4d.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3568

C:\Users\Admin\AppData\Roaming\Gekon.exe
"C:\Users\Admin\AppData\Roaming\Gekon.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:1044

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming\Gekon.exe" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:4064

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Roaming\Gekon.exe" +s +h
4⤵
- Views/modifies file attributes
PID:1900

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming" +s +h
3⤵
- Suspicious use of WriteProcessMemory
PID:3068

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Roaming" +s +h
4⤵
- Views/modifies file attributes
PID:1544

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
3⤵
- 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:1372

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:1908

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Gekon.exe
Filesize
252KB

MD5
200dccea6b2e072fa47842830aaf7754

SHA1
d07d57e782daf0b71e521257ef28d5ba69ebc6e2

SHA256
10e3f01bedd5fbc7a01c9864085557105ee43e8f0c05c98ea06c6d1f53f5f013

SHA512
87ca099a8b941063966cf13eb86a354e56f4166a080c1c0bd24b1e999db65e661c617bd666749e6c3fe198a7eb0d098f4160ce742a31cdcbbeda2341d12e52be

Download Submit
C:\Users\Admin\AppData\Roaming\Gekon.exe
Filesize
252KB

MD5
200dccea6b2e072fa47842830aaf7754

SHA1
d07d57e782daf0b71e521257ef28d5ba69ebc6e2

SHA256
10e3f01bedd5fbc7a01c9864085557105ee43e8f0c05c98ea06c6d1f53f5f013

SHA512
87ca099a8b941063966cf13eb86a354e56f4166a080c1c0bd24b1e999db65e661c617bd666749e6c3fe198a7eb0d098f4160ce742a31cdcbbeda2341d12e52be

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
252KB

MD5
200dccea6b2e072fa47842830aaf7754

SHA1
d07d57e782daf0b71e521257ef28d5ba69ebc6e2

SHA256
10e3f01bedd5fbc7a01c9864085557105ee43e8f0c05c98ea06c6d1f53f5f013

SHA512
87ca099a8b941063966cf13eb86a354e56f4166a080c1c0bd24b1e999db65e661c617bd666749e6c3fe198a7eb0d098f4160ce742a31cdcbbeda2341d12e52be

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
252KB

MD5
200dccea6b2e072fa47842830aaf7754

SHA1
d07d57e782daf0b71e521257ef28d5ba69ebc6e2

SHA256
10e3f01bedd5fbc7a01c9864085557105ee43e8f0c05c98ea06c6d1f53f5f013

SHA512
87ca099a8b941063966cf13eb86a354e56f4166a080c1c0bd24b1e999db65e661c617bd666749e6c3fe198a7eb0d098f4160ce742a31cdcbbeda2341d12e52be

Download Submit
memory/1044-130-0x0000000000000000-mapping.dmp

Download
memory/1372-137-0x0000000000000000-mapping.dmp

Download
memory/1544-136-0x0000000000000000-mapping.dmp

Download
memory/1900-135-0x0000000000000000-mapping.dmp

Download
memory/1908-140-0x0000000000000000-mapping.dmp

Download
memory/3068-134-0x0000000000000000-mapping.dmp

Download
memory/4064-133-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads