darkcomet | 523f4f15abf923f20c27f14c374ab9f2d7ba3041290090cd7eb6f752016abe25

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06/07/2024, 08:14

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General

Target

27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Size

544KB
MD5

27dcfef6c3791c62370b4cc3c4df0c04
SHA1

d8026d73b1a639a46d06c1559b4e646b91389018
SHA256

523f4f15abf923f20c27f14c374ab9f2d7ba3041290090cd7eb6f752016abe25
SHA512

c6be39e30dca9c8068ab7bf4d8b87e991af36b23af15bf353d723db48a50e35d85fa6d27708040d2cccbc3c4ede0abcfd13a7553fc4c8842a680c9c803db5e53
SSDEEP

12288:rRFj6A97co1HiXYf78O/WDvsRVAgYVgadTLFMAgf3UTraokHcnWem:GA9ood/d+Dvs3AfVJT/gf3UTm38n6

Score

10^/10

darkcomet persistence rat trojan

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat 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:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Windupdt\\winupdate.exe"	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.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	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Executes dropped EXE 1 IoCs

pid	Process
2908	winupdate.exe

Loads dropped DLL 4 IoCs

pid	Process
2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
2908	winupdate.exe
2908	winupdate.exe
2908	winupdate.exe

Molebox Virtualization software 3 IoCs

Detects file using Molebox Virtualization software.

resource	yara_rule
behavioral1/memory/2800-2-0x0000000000400000-0x00000000004D0000-memory.dmp	molebox
behavioral1/files/0x0035000000014665-11.dat	molebox
behavioral1/memory/2908-22-0x0000000000400000-0x00000000004D0000-memory.dmp	molebox

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-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Windupdt\\winupdate.exe"	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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\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	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	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	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeSecurityPrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeBackupPrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeRestorePrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeShutdownPrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeDebugPrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeUndockPrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: 33	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: 34	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: 35	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2908	winupdate.exe
Token: SeSecurityPrivilege	2908	winupdate.exe
Token: SeTakeOwnershipPrivilege	2908	winupdate.exe
Token: SeLoadDriverPrivilege	2908	winupdate.exe
Token: SeSystemProfilePrivilege	2908	winupdate.exe
Token: SeSystemtimePrivilege	2908	winupdate.exe
Token: SeProfSingleProcessPrivilege	2908	winupdate.exe
Token: SeIncBasePriorityPrivilege	2908	winupdate.exe
Token: SeCreatePagefilePrivilege	2908	winupdate.exe
Token: SeBackupPrivilege	2908	winupdate.exe
Token: SeRestorePrivilege	2908	winupdate.exe
Token: SeShutdownPrivilege	2908	winupdate.exe
Token: SeDebugPrivilege	2908	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2908	winupdate.exe
Token: SeChangeNotifyPrivilege	2908	winupdate.exe
Token: SeRemoteShutdownPrivilege	2908	winupdate.exe
Token: SeUndockPrivilege	2908	winupdate.exe
Token: SeManageVolumePrivilege	2908	winupdate.exe
Token: SeImpersonatePrivilege	2908	winupdate.exe
Token: SeCreateGlobalPrivilege	2908	winupdate.exe
Token: 33	2908	winupdate.exe
Token: 34	2908	winupdate.exe
Token: 35	2908	winupdate.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2800 wrote to memory of 2908	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe	28
PID 2800 wrote to memory of 2908	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe	28
PID 2800 wrote to memory of 2908	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe	28
PID 2800 wrote to memory of 2908	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe	28
PID 2800 wrote to memory of 2908	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe	28
PID 2800 wrote to memory of 2908	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe	28
PID 2800 wrote to memory of 2908	2800	27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe	28

C:\Users\Admin\AppData\Local\Temp\27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\27dcfef6c3791c62370b4cc3c4df0c04_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Loads dropped DLL
- Adds Run key to start application
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2800
- C:\ProgramData\Microsoft\Windows\Start Menu\Windupdt\winupdate.exe
  "C:\ProgramData\Microsoft\Windows\Start Menu\Windupdt\winupdate.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:2908

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\ProgramData\Microsoft\Windows\Start Menu\Windupdt\winupdate.exe

Filesize
544KB

MD5
27dcfef6c3791c62370b4cc3c4df0c04

SHA1
d8026d73b1a639a46d06c1559b4e646b91389018

SHA256
523f4f15abf923f20c27f14c374ab9f2d7ba3041290090cd7eb6f752016abe25

SHA512
c6be39e30dca9c8068ab7bf4d8b87e991af36b23af15bf353d723db48a50e35d85fa6d27708040d2cccbc3c4ede0abcfd13a7553fc4c8842a680c9c803db5e53

Download Submit
memory/2800-7-0x00000000752F0000-0x0000000075400000-memory.dmp

Filesize
1.1MB

Download
memory/2800-1-0x00000000002F0000-0x000000000032D000-memory.dmp

Filesize
244KB

Download
memory/2800-0-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2800-6-0x0000000075301000-0x0000000075302000-memory.dmp

Filesize
4KB

Download
memory/2800-5-0x0000000077800000-0x0000000077801000-memory.dmp

Filesize
4KB

Download
memory/2800-4-0x0000000001EF0000-0x0000000001F00000-memory.dmp

Filesize
64KB

Download
memory/2800-3-0x00000000020E0000-0x00000000020F0000-memory.dmp

Filesize
64KB

Download
memory/2800-2-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2800-15-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2800-18-0x00000000752F0000-0x0000000075400000-memory.dmp

Filesize
1.1MB

Download
memory/2800-16-0x00000000002F0000-0x000000000032D000-memory.dmp

Filesize
244KB

Download
memory/2908-22-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2908-23-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2908-24-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2908-25-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2908-26-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2908-27-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2908-28-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2908-29-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2908-30-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2908-31-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2908-32-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2908-33-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2908-34-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2908-35-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download
memory/2908-36-0x0000000000400000-0x00000000004D0000-memory.dmp

Filesize
832KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads