darkcomet | f0904890533c32e6fcbe160eb0055c55d7eff868002cf638b4806b26593c2638

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13-12-2024 12:54

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General

Target

eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Size

747KB
MD5

eb9929b2a05ca8aaffe501e498bd0301
SHA1

2a648717022fbe526f07c6827796d0f2a767cae2
SHA256

f0904890533c32e6fcbe160eb0055c55d7eff868002cf638b4806b26593c2638
SHA512

3b0f9441f72b1ddafd121da04e53fd89af2e68cf37aeb92c9aea5d9b47a21b5d4f4fa7bd85196b08442c18e5423182f1cc9d3d71ed9fd5ec518fd48ef0c33f20
SSDEEP

12288:ek0QVlhmPojAPTMEsUTg0oChO/Q2JbsbjPbN5qhRTtYe3f+Iw86k/9/+rnkT:z0QRWoJEfg0oChGdJQbjPbNW5tYeP+Gp

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

melidas.no-ip.org:1604

Mutex

DC_MUTEX-W6URBQG

Attributes

InstallPath
MSDCSC\Rundll32.exe
gencode
tduXnWzfAFR4
install
true
offline_keylogger
true
persistence
false
reg_key
Rundll32

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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\MSDCSC\\Rundll32.exe"	eb9929b2a05ca8aaffe501e498bd0301_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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	Rundll32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	Rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	Rundll32.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	Rundll32.exe

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	Rundll32.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4984	Rundll32.exe

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	Rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rundll32 = "C:\\Windows\\MSDCSC\\Rundll32.exe"	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\MSDCSC\Rundll32.exe	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
File opened for modification	C:\Windows\MSDCSC\Rundll32.exe	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
File opened for modification	C:\Windows\MSDCSC\	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Rundll32.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeSecurityPrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeBackupPrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeRestorePrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeShutdownPrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeDebugPrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeUndockPrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: 33	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: 34	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: 35	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: 36	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4984	Rundll32.exe
Token: SeSecurityPrivilege	4984	Rundll32.exe
Token: SeTakeOwnershipPrivilege	4984	Rundll32.exe
Token: SeLoadDriverPrivilege	4984	Rundll32.exe
Token: SeSystemProfilePrivilege	4984	Rundll32.exe
Token: SeSystemtimePrivilege	4984	Rundll32.exe
Token: SeProfSingleProcessPrivilege	4984	Rundll32.exe
Token: SeIncBasePriorityPrivilege	4984	Rundll32.exe
Token: SeCreatePagefilePrivilege	4984	Rundll32.exe
Token: SeBackupPrivilege	4984	Rundll32.exe
Token: SeRestorePrivilege	4984	Rundll32.exe
Token: SeShutdownPrivilege	4984	Rundll32.exe
Token: SeDebugPrivilege	4984	Rundll32.exe
Token: SeSystemEnvironmentPrivilege	4984	Rundll32.exe
Token: SeChangeNotifyPrivilege	4984	Rundll32.exe
Token: SeRemoteShutdownPrivilege	4984	Rundll32.exe
Token: SeUndockPrivilege	4984	Rundll32.exe
Token: SeManageVolumePrivilege	4984	Rundll32.exe
Token: SeImpersonatePrivilege	4984	Rundll32.exe
Token: SeCreateGlobalPrivilege	4984	Rundll32.exe
Token: 33	4984	Rundll32.exe
Token: 34	4984	Rundll32.exe
Token: 35	4984	Rundll32.exe
Token: 36	4984	Rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4984	Rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1236 wrote to memory of 4984	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe	82
PID 1236 wrote to memory of 4984	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe	82
PID 1236 wrote to memory of 4984	1236	eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe	82

C:\Users\Admin\AppData\Local\Temp\eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\eb9929b2a05ca8aaffe501e498bd0301_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Windows\MSDCSC\Rundll32.exe
  "C:\Windows\MSDCSC\Rundll32.exe"
  2⤵
  - Modifies firewall policy service
  - Modifies security service
  - Windows security bypass
  - Executes dropped EXE
  - Windows security modification
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4984

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

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

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:\Windows\MSDCSC\Rundll32.exe

Filesize
747KB

MD5
eb9929b2a05ca8aaffe501e498bd0301

SHA1
2a648717022fbe526f07c6827796d0f2a767cae2

SHA256
f0904890533c32e6fcbe160eb0055c55d7eff868002cf638b4806b26593c2638

SHA512
3b0f9441f72b1ddafd121da04e53fd89af2e68cf37aeb92c9aea5d9b47a21b5d4f4fa7bd85196b08442c18e5423182f1cc9d3d71ed9fd5ec518fd48ef0c33f20

Download Submit
memory/1236-0-0x0000000002130000-0x0000000002131000-memory.dmp

Filesize
4KB

Download
memory/1236-38-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4984-44-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4984-46-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4984-41-0x00000000006D0000-0x00000000006D1000-memory.dmp

Filesize
4KB

Download
memory/4984-42-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4984-43-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4984-39-0x00000000006D0000-0x00000000006D1000-memory.dmp

Filesize
4KB

Download
memory/4984-45-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4984-40-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4984-47-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4984-48-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4984-49-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4984-50-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4984-51-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4984-52-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4984-53-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4984-54-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads