darkcomet | 58e243533df7be838434753ae8b68b5b603269a532b7567bf90a94ad25db80af

Analysis

max time kernel
120s
max time network
126s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21/02/2025, 01:06

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General

Target

JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe
Size

2.2MB
MD5

0f3fcc0d11d52a00d58999c09ae56893
SHA1

c379bae74dfae67d22a3c13c50634b6d22ed3852
SHA256

58e243533df7be838434753ae8b68b5b603269a532b7567bf90a94ad25db80af
SHA512

4b4efec460371d05c3becd0485e7964daf7c3c314398ca568c5222ec1e41b1d8df5d4b4d90a44cdea247463ca1398331e6a20c604730830ee7f837188d3e7dfb
SSDEEP

24576:ygsSOe92bfUTogmbvuTG312E1FVXHo5t2ALj8Ffp/UphYYxWz8T:ydeD7NE1UR/+pqhsz

Score

10^/10

darkcomet test vmware discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Attributes

gencode
install
false
offline_keylogger
false
persistence
false

rc4.plain

Extracted

Family

darkcomet

Botnet

Test VmWare

62.10.212.197:1604

Mutex

DC_MUTEX-F54S21D

Attributes

InstallPath
Windupdt\winupdate.exe
gencode
3E3yDc18gZGN
install
true
offline_keylogger
false
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"	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe

Checks BIOS information in registry 2 TTPs 1 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	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe

Executes dropped EXE 2 IoCs

pid	Process
2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
2644	winupdate.exe

Loads dropped DLL 1 IoCs

pid	Process
2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2444 set thread context of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe
File opened for modification	C:\Windows\updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.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 3 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	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe

Checks processor information in registry 2 TTPs 4 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	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeSecurityPrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeTakeOwnershipPrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeLoadDriverPrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeSystemProfilePrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeSystemtimePrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeProfSingleProcessPrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeIncBasePriorityPrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeCreatePagefilePrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeBackupPrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeRestorePrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeShutdownPrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeDebugPrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeSystemEnvironmentPrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeChangeNotifyPrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeRemoteShutdownPrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeUndockPrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeManageVolumePrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeImpersonatePrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: SeCreateGlobalPrivilege	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: 33	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: 34	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
Token: 35	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2444 wrote to memory of 2872	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	30
PID 2444 wrote to memory of 2872	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	30
PID 2444 wrote to memory of 2872	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	30
PID 2444 wrote to memory of 2872	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	30
PID 2444 wrote to memory of 2872	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	30
PID 2444 wrote to memory of 2872	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	30
PID 2444 wrote to memory of 2872	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	30
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2444 wrote to memory of 2868	2444	JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe	31
PID 2868 wrote to memory of 2644	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe	32
PID 2868 wrote to memory of 2644	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe	32
PID 2868 wrote to memory of 2644	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe	32
PID 2868 wrote to memory of 2644	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe	32
PID 2868 wrote to memory of 2644	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe	32
PID 2868 wrote to memory of 2644	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe	32
PID 2868 wrote to memory of 2644	2868	updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0f3fcc0d11d52a00d58999c09ae56893.exe"
1⤵
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2444
- C:\Windows\updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
  C:\Windows\updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
  2⤵
  PID:2872
- C:\Windows\updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
  C:\Windows\updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Executes dropped EXE
  - 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:2868
- - C:\Windupdt\winupdate.exe
    "C:\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2644

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

C:\Windows\updatemtKlkBqskKmRPxlHwnCMuuhhJReGZF.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/2444-0-0x00000000746B1000-0x00000000746B2000-memory.dmp

Filesize
4KB

Download
memory/2444-1-0x00000000746B0000-0x0000000074C5B000-memory.dmp

Filesize
5.7MB

Download
memory/2444-2-0x00000000746B0000-0x0000000074C5B000-memory.dmp

Filesize
5.7MB

Download
memory/2444-27-0x00000000746B0000-0x0000000074C5B000-memory.dmp

Filesize
5.7MB

Download
memory/2868-18-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2868-13-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2868-23-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2868-25-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2868-20-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2868-15-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2868-16-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2868-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2868-12-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2868-10-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2868-26-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2868-8-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2868-30-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2868-29-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2868-42-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2868-28-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads