darkcomet | bda554719d5b74cbf2cb72d941fba94e03dbdf3dbde789152b76bf83483565df

Analysis

max time kernel
150s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30-10-2024 16:14

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General

Target

7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Size

757KB
MD5

7fe4d1ff773a5b614a5ed5ce0e119988
SHA1

0bc04b4bdda7b4edfc3344780a43c8542ef4d438
SHA256

bda554719d5b74cbf2cb72d941fba94e03dbdf3dbde789152b76bf83483565df
SHA512

aed2470edaa03eed6b43c18e43bcb5e6d1faec1eed40090882155c72b428c3da7e096317a1215771d2205cc6900fb6e594ac6c6053f7da346f926057f02c2e15
SSDEEP

12288:z9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h9svv6:9Z1xuVVjfFoynPaVBUR8f+kN10EBMvv6

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

cruzbiz.mooo.com:1604

Mutex

DC_MUTEX-U1P570D

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
APRSFUVaZcpB
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
Darkcomet family
darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.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"	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe

Modifies firewall policy service 3 TTPs 3 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

Processes:

msdcsc.exe

description	ioc	Process
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
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

msdcsc.exe

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid	Process
1160	msdcsc.exe

Loads dropped DLL 2 IoCs

Processes:

7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe

pid	Process
1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exemsdcsc.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.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:

7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exemsdcsc.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid	Process
1160	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exemsdcsc.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeSecurityPrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeBackupPrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeRestorePrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeShutdownPrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeDebugPrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeUndockPrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: 33	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: 34	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: 35	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1160	msdcsc.exe
Token: SeSecurityPrivilege	1160	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1160	msdcsc.exe
Token: SeLoadDriverPrivilege	1160	msdcsc.exe
Token: SeSystemProfilePrivilege	1160	msdcsc.exe
Token: SeSystemtimePrivilege	1160	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1160	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1160	msdcsc.exe
Token: SeCreatePagefilePrivilege	1160	msdcsc.exe
Token: SeBackupPrivilege	1160	msdcsc.exe
Token: SeRestorePrivilege	1160	msdcsc.exe
Token: SeShutdownPrivilege	1160	msdcsc.exe
Token: SeDebugPrivilege	1160	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1160	msdcsc.exe
Token: SeChangeNotifyPrivilege	1160	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1160	msdcsc.exe
Token: SeUndockPrivilege	1160	msdcsc.exe
Token: SeManageVolumePrivilege	1160	msdcsc.exe
Token: SeImpersonatePrivilege	1160	msdcsc.exe
Token: SeCreateGlobalPrivilege	1160	msdcsc.exe
Token: 33	1160	msdcsc.exe
Token: 34	1160	msdcsc.exe
Token: 35	1160	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid	Process
1160	msdcsc.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe

description	pid	Process	procid_target
PID 1632 wrote to memory of 1160	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe	31
PID 1632 wrote to memory of 1160	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe	31
PID 1632 wrote to memory of 1160	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe	31
PID 1632 wrote to memory of 1160	1632	7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7fe4d1ff773a5b614a5ed5ce0e119988_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies firewall policy service
  - Disables RegEdit via registry modification
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1160

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
757KB

MD5
7fe4d1ff773a5b614a5ed5ce0e119988

SHA1
0bc04b4bdda7b4edfc3344780a43c8542ef4d438

SHA256
bda554719d5b74cbf2cb72d941fba94e03dbdf3dbde789152b76bf83483565df

SHA512
aed2470edaa03eed6b43c18e43bcb5e6d1faec1eed40090882155c72b428c3da7e096317a1215771d2205cc6900fb6e594ac6c6053f7da346f926057f02c2e15

Download Submit
memory/1160-18-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1160-17-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1160-13-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1160-14-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1160-19-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1160-16-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1160-26-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1160-25-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1160-15-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1160-20-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1160-21-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1160-22-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1160-23-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1160-24-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/1632-0-0x00000000002E0000-0x00000000002E1000-memory.dmp

Filesize
4KB

Download
memory/1632-12-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download