darkcomet | e65037238450eabc137cd356dcc62b16db53db61531154e64ca00acfd00e0213

General

Target

yooo.exe
Size

658KB
MD5

677d14c29be05629a77415b842492b76
SHA1

6b491eca627cb457414262cc9d417fab81b4db67
SHA256

e65037238450eabc137cd356dcc62b16db53db61531154e64ca00acfd00e0213
SHA512

de64f10a8c41488d3c88bd5edeaf530954a762a0ee1b49873b82a45604a7e7eb91c18569f8dec23e1129f9b52a312b9992508d948e60ee85dc71f2d498285f3f
SSDEEP

12288:S9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h3:+Z1xuVVjfFoynPaVBUR8f+kN10EB5

Score

10^/10

darkcomet guest16_min discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16_min

C2

10.211.55.25:1604

Mutex

DCMIN_MUTEX-410US0Y

Attributes

InstallPath
DCSCMIN\IMDCSC.exe
gencode
41iAjvfv0Zir
install
true
offline_keylogger
true
persistence
false
reg_key
DarkComet RAT

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

yooo.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\\DCSCMIN\\IMDCSC.exe"	yooo.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:

yooo.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-870806430-2618236806-3023919190-1000\Control Panel\International\Geo\Nation yooo.exe
Executes dropped EXE 1 IoCs

Processes:

IMDCSC.exe

pid process

5116 IMDCSC.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-870806430-2618236806-3023919190-1000\Control Panel\International\Geo\Nation	yooo.exe

pid	process
5116	IMDCSC.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

yooo.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-870806430-2618236806-3023919190-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DarkComet RAT = "C:\\Users\\Admin\\Documents\\DCSCMIN\\IMDCSC.exe"	yooo.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

yooo.exeIMDCSC.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yooo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IMDCSC.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

yooo.exeIMDCSC.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2516	yooo.exe
Token: SeSecurityPrivilege	2516	yooo.exe
Token: SeTakeOwnershipPrivilege	2516	yooo.exe
Token: SeLoadDriverPrivilege	2516	yooo.exe
Token: SeSystemProfilePrivilege	2516	yooo.exe
Token: SeSystemtimePrivilege	2516	yooo.exe
Token: SeProfSingleProcessPrivilege	2516	yooo.exe
Token: SeIncBasePriorityPrivilege	2516	yooo.exe
Token: SeCreatePagefilePrivilege	2516	yooo.exe
Token: SeBackupPrivilege	2516	yooo.exe
Token: SeRestorePrivilege	2516	yooo.exe
Token: SeShutdownPrivilege	2516	yooo.exe
Token: SeDebugPrivilege	2516	yooo.exe
Token: SeSystemEnvironmentPrivilege	2516	yooo.exe
Token: SeChangeNotifyPrivilege	2516	yooo.exe
Token: SeRemoteShutdownPrivilege	2516	yooo.exe
Token: SeUndockPrivilege	2516	yooo.exe
Token: SeManageVolumePrivilege	2516	yooo.exe
Token: SeImpersonatePrivilege	2516	yooo.exe
Token: SeCreateGlobalPrivilege	2516	yooo.exe
Token: 33	2516	yooo.exe
Token: 34	2516	yooo.exe
Token: 35	2516	yooo.exe
Token: 36	2516	yooo.exe
Token: SeIncreaseQuotaPrivilege	5116	IMDCSC.exe
Token: SeSecurityPrivilege	5116	IMDCSC.exe
Token: SeTakeOwnershipPrivilege	5116	IMDCSC.exe
Token: SeLoadDriverPrivilege	5116	IMDCSC.exe
Token: SeSystemProfilePrivilege	5116	IMDCSC.exe
Token: SeSystemtimePrivilege	5116	IMDCSC.exe
Token: SeProfSingleProcessPrivilege	5116	IMDCSC.exe
Token: SeIncBasePriorityPrivilege	5116	IMDCSC.exe
Token: SeCreatePagefilePrivilege	5116	IMDCSC.exe
Token: SeBackupPrivilege	5116	IMDCSC.exe
Token: SeRestorePrivilege	5116	IMDCSC.exe
Token: SeShutdownPrivilege	5116	IMDCSC.exe
Token: SeDebugPrivilege	5116	IMDCSC.exe
Token: SeSystemEnvironmentPrivilege	5116	IMDCSC.exe
Token: SeChangeNotifyPrivilege	5116	IMDCSC.exe
Token: SeRemoteShutdownPrivilege	5116	IMDCSC.exe
Token: SeUndockPrivilege	5116	IMDCSC.exe
Token: SeManageVolumePrivilege	5116	IMDCSC.exe
Token: SeImpersonatePrivilege	5116	IMDCSC.exe
Token: SeCreateGlobalPrivilege	5116	IMDCSC.exe
Token: 33	5116	IMDCSC.exe
Token: 34	5116	IMDCSC.exe
Token: 35	5116	IMDCSC.exe
Token: 36	5116	IMDCSC.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

IMDCSC.exe

pid process

5116 IMDCSC.exe

pid	process
5116	IMDCSC.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

yooo.exe

description	pid	process	target process
PID 2516 wrote to memory of 5116	2516	yooo.exe	IMDCSC.exe
PID 2516 wrote to memory of 5116	2516	yooo.exe	IMDCSC.exe
PID 2516 wrote to memory of 5116	2516	yooo.exe	IMDCSC.exe

C:\Users\Admin\AppData\Local\Temp\yooo.exe
"C:\Users\Admin\AppData\Local\Temp\yooo.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
  "C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:5116

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

Filesize
658KB

MD5
677d14c29be05629a77415b842492b76

SHA1
6b491eca627cb457414262cc9d417fab81b4db67

SHA256
e65037238450eabc137cd356dcc62b16db53db61531154e64ca00acfd00e0213

SHA512
de64f10a8c41488d3c88bd5edeaf530954a762a0ee1b49873b82a45604a7e7eb91c18569f8dec23e1129f9b52a312b9992508d948e60ee85dc71f2d498285f3f

Download Submit
memory/2516-0-0x00000000022A0000-0x00000000022A1000-memory.dmp

Filesize
4KB

Download
memory/2516-3-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5116-2-0x00000000007C0000-0x00000000007C1000-memory.dmp

Filesize
4KB

Download
memory/5116-4-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/5116-6-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads