darkcomet | 0eb05ea65682f093007fd38a0bfa99b66a3a059b54dbb8a1ce4bae7c0d890059

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-12-2024 01:35

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General

Target

d00c31822087142a7addaf6051bd0812_JaffaCakes118.exe
Size

449KB
MD5

d00c31822087142a7addaf6051bd0812
SHA1

c02363c122ea1a2dc1a6a48037ec7d06f3908caf
SHA256

0eb05ea65682f093007fd38a0bfa99b66a3a059b54dbb8a1ce4bae7c0d890059
SHA512

86152091d1df0a12c906a5f4cdb9e1e1d8f8762ec77fc4136fffadc338d0f6d5009d7c9da317cba62f161d928c61d26d155e1a1ee53ca9fb598a457743e157b6
SSDEEP

12288:pVTHy8bZiuDS925JNwbdM9VQasIwe3/Sckv9Yf:phtbgr925J2baQahVMFYf

Score

10^/10

darkcomet discovery persistence rat trojan

Malware Config

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:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	splash.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	splash.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Executes dropped EXE 2 IoCs

pid	Process
3052	splash.exe
2744	winupdate.exe

Loads dropped DLL 9 IoCs

pid	Process
2072	d00c31822087142a7addaf6051bd0812_JaffaCakes118.exe
2072	d00c31822087142a7addaf6051bd0812_JaffaCakes118.exe
3052	splash.exe
3052	splash.exe
3052	splash.exe
3052	splash.exe
2744	winupdate.exe
2744	winupdate.exe
2744	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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	splash.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 4 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	d00c31822087142a7addaf6051bd0812_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	splash.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DllHost.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	splash.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	splash.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
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	splash.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	splash.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	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	splash.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2744	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3052	splash.exe
Token: SeSecurityPrivilege	3052	splash.exe
Token: SeTakeOwnershipPrivilege	3052	splash.exe
Token: SeLoadDriverPrivilege	3052	splash.exe
Token: SeSystemProfilePrivilege	3052	splash.exe
Token: SeSystemtimePrivilege	3052	splash.exe
Token: SeProfSingleProcessPrivilege	3052	splash.exe
Token: SeIncBasePriorityPrivilege	3052	splash.exe
Token: SeCreatePagefilePrivilege	3052	splash.exe
Token: SeBackupPrivilege	3052	splash.exe
Token: SeRestorePrivilege	3052	splash.exe
Token: SeShutdownPrivilege	3052	splash.exe
Token: SeDebugPrivilege	3052	splash.exe
Token: SeSystemEnvironmentPrivilege	3052	splash.exe
Token: SeChangeNotifyPrivilege	3052	splash.exe
Token: SeRemoteShutdownPrivilege	3052	splash.exe
Token: SeUndockPrivilege	3052	splash.exe
Token: SeManageVolumePrivilege	3052	splash.exe
Token: SeImpersonatePrivilege	3052	splash.exe
Token: SeCreateGlobalPrivilege	3052	splash.exe
Token: 33	3052	splash.exe
Token: 34	3052	splash.exe
Token: 35	3052	splash.exe
Token: SeIncreaseQuotaPrivilege	2744	winupdate.exe
Token: SeSecurityPrivilege	2744	winupdate.exe
Token: SeTakeOwnershipPrivilege	2744	winupdate.exe
Token: SeLoadDriverPrivilege	2744	winupdate.exe
Token: SeSystemProfilePrivilege	2744	winupdate.exe
Token: SeSystemtimePrivilege	2744	winupdate.exe
Token: SeProfSingleProcessPrivilege	2744	winupdate.exe
Token: SeIncBasePriorityPrivilege	2744	winupdate.exe
Token: SeCreatePagefilePrivilege	2744	winupdate.exe
Token: SeBackupPrivilege	2744	winupdate.exe
Token: SeRestorePrivilege	2744	winupdate.exe
Token: SeShutdownPrivilege	2744	winupdate.exe
Token: SeDebugPrivilege	2744	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2744	winupdate.exe
Token: SeChangeNotifyPrivilege	2744	winupdate.exe
Token: SeRemoteShutdownPrivilege	2744	winupdate.exe
Token: SeUndockPrivilege	2744	winupdate.exe
Token: SeManageVolumePrivilege	2744	winupdate.exe
Token: SeImpersonatePrivilege	2744	winupdate.exe
Token: SeCreateGlobalPrivilege	2744	winupdate.exe
Token: 33	2744	winupdate.exe
Token: 34	2744	winupdate.exe
Token: 35	2744	winupdate.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2988	DllHost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2988	DllHost.exe
2988	DllHost.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 3052	2072	d00c31822087142a7addaf6051bd0812_JaffaCakes118.exe	30
PID 2072 wrote to memory of 3052	2072	d00c31822087142a7addaf6051bd0812_JaffaCakes118.exe	30
PID 2072 wrote to memory of 3052	2072	d00c31822087142a7addaf6051bd0812_JaffaCakes118.exe	30
PID 2072 wrote to memory of 3052	2072	d00c31822087142a7addaf6051bd0812_JaffaCakes118.exe	30
PID 2072 wrote to memory of 3052	2072	d00c31822087142a7addaf6051bd0812_JaffaCakes118.exe	30
PID 2072 wrote to memory of 3052	2072	d00c31822087142a7addaf6051bd0812_JaffaCakes118.exe	30
PID 2072 wrote to memory of 3052	2072	d00c31822087142a7addaf6051bd0812_JaffaCakes118.exe	30
PID 3052 wrote to memory of 2744	3052	splash.exe	32
PID 3052 wrote to memory of 2744	3052	splash.exe	32
PID 3052 wrote to memory of 2744	3052	splash.exe	32
PID 3052 wrote to memory of 2744	3052	splash.exe	32
PID 3052 wrote to memory of 2744	3052	splash.exe	32
PID 3052 wrote to memory of 2744	3052	splash.exe	32
PID 3052 wrote to memory of 2744	3052	splash.exe	32

C:\Users\Admin\AppData\Local\Temp\d00c31822087142a7addaf6051bd0812_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d00c31822087142a7addaf6051bd0812_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Users\Admin\AppData\Local\Temp\splash.exe
  "C:\Users\Admin\AppData\Local\Temp\splash.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:3052
- - C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
    "C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe"
    3⤵
    - 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 behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:2744

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:2988

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:\Users\Admin\AppData\Local\Temp\foto.jpg

Filesize
6KB

MD5
cc40dfa4892e5116c0ea78bd0b266bc4

SHA1
ad81d4c91c742573c1c4f585435b8031690b7d71

SHA256
a6125385fc637aafa30d1dedd0ae955bb0b877a6476474c5f152b01d0e70b906

SHA512
a7ca6e8699b8e193eadbf27331133548e5eb3201f90733e67164abc88c52915c8d1c9f426cde1301a883b98b85ff38006515cbcd8f22e46847bc37ad211be6b6

Download Submit
\Users\Admin\AppData\Local\Temp\splash.exe

Filesize
276KB

MD5
8ba1a492c6bf52df90cd908fbaca88ba

SHA1
3df03cf51ed0f09dabb77ed8dda9be7c687d6e7f

SHA256
b81048c7c949e1f453f20ab5d0d58cafa48b98b91d2f7a4ee92aff4af655eeab

SHA512
70053dd61676672ec49602d74ee82e0b6f01e2f024015a3618c516a36efeddd71f6a1827715dd1fdd3c0f307a4f528570d4d63571de0d10e664f71e96428107b

Download Submit
memory/2072-14-0x0000000002B20000-0x0000000002B22000-memory.dmp

Filesize
8KB

Download
memory/2744-36-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download
memory/2744-34-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download
memory/2744-29-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download
memory/2744-30-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download
memory/2744-31-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download
memory/2744-32-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download
memory/2744-33-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download
memory/2744-42-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download
memory/2744-35-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download
memory/2744-41-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download
memory/2744-37-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download
memory/2744-38-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download
memory/2744-39-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download
memory/2744-40-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download
memory/2988-15-0x0000000000460000-0x0000000000462000-memory.dmp

Filesize
8KB

Download
memory/3052-24-0x0000000000400000-0x00000000004CAE40-memory.dmp

Filesize
811KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads