darkcomet | 3dc789a3032fb8e72bca8ec412d710720166405043a553b0479c664390641b94

Analysis

max time kernel
149s
max time network
122s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
25/02/2025, 23:26

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General

Target

JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Size

286KB
MD5

231e9bf33b6d97a4568b7104240fff56
SHA1

81c9ee6fccee5d3f38cbcdd73bafb17eec1a8a6f
SHA256

3dc789a3032fb8e72bca8ec412d710720166405043a553b0479c664390641b94
SHA512

6999178908f4a0ef6263c53d40738124e6641ad65370dca6b606bfd472e7f64b56651eee97061a23b4f832ed9f6ae1b48b993ca55806d94cfa39688efe128e06
SSDEEP

3072:23rAsZQCByAxj0v3VGOcZKepLVIfdpxNqaxKZLoZzDu0Ly7Q9+Rjw4bkZbSpsOoZ:ZVvvFIdhUd8QxW7zRjrbk+sOYSaj7

Score

10^/10

darkcomet prv1 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

prv1

hackflor.no-ip.info:1605

Mutex

DC_MUTEX-QRC5UD6

Attributes

InstallPath
Windupdt\winupdate.exe
gencode
Y26JiXGYPz$G
install
true
offline_keylogger
true
persistence
false
reg_key
winupdater

rc4.plain

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:\\Windupdt\\winupdate.exe"	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Executes dropped EXE 1 IoCs

pid	Process
2756	winupdate.exe

Loads dropped DLL 4 IoCs

pid	Process
2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
2756	winupdate.exe
2756	winupdate.exe
2756	winupdate.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.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	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe

Checks processor information in registry 2 TTPs 8 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winupdate.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeSecurityPrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeTakeOwnershipPrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeLoadDriverPrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeSystemProfilePrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeSystemtimePrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeProfSingleProcessPrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeIncBasePriorityPrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeCreatePagefilePrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeBackupPrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeRestorePrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeShutdownPrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeDebugPrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeSystemEnvironmentPrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeChangeNotifyPrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeRemoteShutdownPrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeUndockPrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeManageVolumePrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeImpersonatePrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeCreateGlobalPrivilege	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: 33	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: 34	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: 35	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
Token: SeIncreaseQuotaPrivilege	2756	winupdate.exe
Token: SeSecurityPrivilege	2756	winupdate.exe
Token: SeTakeOwnershipPrivilege	2756	winupdate.exe
Token: SeLoadDriverPrivilege	2756	winupdate.exe
Token: SeSystemProfilePrivilege	2756	winupdate.exe
Token: SeSystemtimePrivilege	2756	winupdate.exe
Token: SeProfSingleProcessPrivilege	2756	winupdate.exe
Token: SeIncBasePriorityPrivilege	2756	winupdate.exe
Token: SeCreatePagefilePrivilege	2756	winupdate.exe
Token: SeBackupPrivilege	2756	winupdate.exe
Token: SeRestorePrivilege	2756	winupdate.exe
Token: SeShutdownPrivilege	2756	winupdate.exe
Token: SeDebugPrivilege	2756	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2756	winupdate.exe
Token: SeChangeNotifyPrivilege	2756	winupdate.exe
Token: SeRemoteShutdownPrivilege	2756	winupdate.exe
Token: SeUndockPrivilege	2756	winupdate.exe
Token: SeManageVolumePrivilege	2756	winupdate.exe
Token: SeImpersonatePrivilege	2756	winupdate.exe
Token: SeCreateGlobalPrivilege	2756	winupdate.exe
Token: 33	2756	winupdate.exe
Token: 34	2756	winupdate.exe
Token: 35	2756	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2756	winupdate.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 2756	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe	30
PID 2760 wrote to memory of 2756	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe	30
PID 2760 wrote to memory of 2756	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe	30
PID 2760 wrote to memory of 2756	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe	30
PID 2760 wrote to memory of 2756	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe	30
PID 2760 wrote to memory of 2756	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe	30
PID 2760 wrote to memory of 2756	2760	JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_231e9bf33b6d97a4568b7104240fff56.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2756

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

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

\Windupdt\winupdate.exe

Filesize
286KB

MD5
231e9bf33b6d97a4568b7104240fff56

SHA1
81c9ee6fccee5d3f38cbcdd73bafb17eec1a8a6f

SHA256
3dc789a3032fb8e72bca8ec412d710720166405043a553b0479c664390641b94

SHA512
6999178908f4a0ef6263c53d40738124e6641ad65370dca6b606bfd472e7f64b56651eee97061a23b4f832ed9f6ae1b48b993ca55806d94cfa39688efe128e06

Download Submit
memory/2756-29-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2756-33-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2756-36-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2756-35-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2756-34-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2756-25-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2756-20-0x0000000000280000-0x0000000000283000-memory.dmp

Filesize
12KB

Download
memory/2756-19-0x0000000000230000-0x0000000000302000-memory.dmp

Filesize
840KB

Download
memory/2756-18-0x0000000000230000-0x0000000000302000-memory.dmp

Filesize
840KB

Download
memory/2756-21-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2756-22-0x0000000000280000-0x0000000000283000-memory.dmp

Filesize
12KB

Download
memory/2756-23-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2756-32-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2756-26-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2756-24-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2756-27-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2756-28-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2756-31-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2756-30-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2760-0-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2760-2-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/2760-12-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/2760-13-0x0000000000260000-0x0000000000263000-memory.dmp

Filesize
12KB

Download
memory/2760-8-0x00000000033B0000-0x0000000003482000-memory.dmp

Filesize
840KB

Download
memory/2760-1-0x0000000000260000-0x0000000000263000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads