darkcomet | ea62993d7be8a983f105115c05ee3fe9a8967791554823e31fdc2d4d8b16d154

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20-04-2024 11:57

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General

Target

fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Size

320KB
MD5

fcb86a86a1cd1451c51964574bf5a43e
SHA1

68690d11595eec4e60c4c7025c4137d21a12887a
SHA256

ea62993d7be8a983f105115c05ee3fe9a8967791554823e31fdc2d4d8b16d154
SHA512

ee2eabb5f730dddcea94ff6aa5e906e729f222dd1226dc31626f0a015a85fcc5e66e56f4fa09c8fa89622a9af6daaf1dffa562cd672581c82fa96f7e26742a73
SSDEEP

6144:PPAEj0eMUnTa6haaegatOrW4+CQtKZDFNbBoOWULM2F:PdVMUn+da5rWlCOKJPbBpZ42F

Score

10^/10

darkcomet persistence rat trojan upx

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

Processes:

fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe

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\\GU\\GoogleUpdate.exe"	fcb86a86a1cd1451c51964574bf5a43e_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

Processes:

fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exeGoogleUpdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	GoogleUpdate.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

Processes:

fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

Processes:

GoogleUpdate.exeGoogleUpdate.exe

pid	Process
4604	GoogleUpdate.exe
1380	GoogleUpdate.exe

UPX packed file 19 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/2772-2-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/2772-5-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/2772-6-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/2772-7-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/2772-8-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/2772-9-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/2772-45-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/1380-53-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/1380-54-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/1380-55-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/1380-56-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/1380-58-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/1380-59-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/1380-60-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/1380-61-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/1380-62-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/1380-63-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/1380-64-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/1380-65-0x0000000000400000-0x00000000004C5000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\GoogleUpate = "C:\\Users\\Admin\\AppData\\Roaming\\GU\\GoogleUpdate.exe"	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exeGoogleUpdate.exe

description	pid	Process	procid_target
PID 4508 set thread context of 2772	4508	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe	102
PID 4604 set thread context of 1380	4604	GoogleUpdate.exe	113

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

Processes:

GoogleUpdate.exefcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	GoogleUpdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	GoogleUpdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	GoogleUpdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	GoogleUpdate.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exeGoogleUpdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	GoogleUpdate.exe

Modifies registry class 1 IoCs

Processes:

fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 3 IoCs

Processes:

fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exeGoogleUpdate.exeGoogleUpdate.exe

pid	Process
4508	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
4604	GoogleUpdate.exe
1380	GoogleUpdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exeGoogleUpdate.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeSecurityPrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeBackupPrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeRestorePrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeShutdownPrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeDebugPrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeUndockPrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: 33	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: 34	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: 35	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: 36	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1380	GoogleUpdate.exe
Token: SeSecurityPrivilege	1380	GoogleUpdate.exe
Token: SeTakeOwnershipPrivilege	1380	GoogleUpdate.exe
Token: SeLoadDriverPrivilege	1380	GoogleUpdate.exe
Token: SeSystemProfilePrivilege	1380	GoogleUpdate.exe
Token: SeSystemtimePrivilege	1380	GoogleUpdate.exe
Token: SeProfSingleProcessPrivilege	1380	GoogleUpdate.exe
Token: SeIncBasePriorityPrivilege	1380	GoogleUpdate.exe
Token: SeCreatePagefilePrivilege	1380	GoogleUpdate.exe
Token: SeBackupPrivilege	1380	GoogleUpdate.exe
Token: SeRestorePrivilege	1380	GoogleUpdate.exe
Token: SeShutdownPrivilege	1380	GoogleUpdate.exe
Token: SeDebugPrivilege	1380	GoogleUpdate.exe
Token: SeSystemEnvironmentPrivilege	1380	GoogleUpdate.exe
Token: SeChangeNotifyPrivilege	1380	GoogleUpdate.exe
Token: SeRemoteShutdownPrivilege	1380	GoogleUpdate.exe
Token: SeUndockPrivilege	1380	GoogleUpdate.exe
Token: SeManageVolumePrivilege	1380	GoogleUpdate.exe
Token: SeImpersonatePrivilege	1380	GoogleUpdate.exe
Token: SeCreateGlobalPrivilege	1380	GoogleUpdate.exe
Token: 33	1380	GoogleUpdate.exe
Token: 34	1380	GoogleUpdate.exe
Token: 35	1380	GoogleUpdate.exe
Token: 36	1380	GoogleUpdate.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exefcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exeGoogleUpdate.exe

description	pid	Process	procid_target
PID 4508 wrote to memory of 2772	4508	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe	102
PID 4508 wrote to memory of 2772	4508	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe	102
PID 4508 wrote to memory of 2772	4508	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe	102
PID 4508 wrote to memory of 2772	4508	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe	102
PID 4508 wrote to memory of 2772	4508	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe	102
PID 4508 wrote to memory of 2772	4508	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe	102
PID 4508 wrote to memory of 2772	4508	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe	102
PID 2772 wrote to memory of 4604	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe	103
PID 2772 wrote to memory of 4604	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe	103
PID 2772 wrote to memory of 4604	2772	fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe	103
PID 4604 wrote to memory of 1380	4604	GoogleUpdate.exe	113
PID 4604 wrote to memory of 1380	4604	GoogleUpdate.exe	113
PID 4604 wrote to memory of 1380	4604	GoogleUpdate.exe	113
PID 4604 wrote to memory of 1380	4604	GoogleUpdate.exe	113
PID 4604 wrote to memory of 1380	4604	GoogleUpdate.exe	113
PID 4604 wrote to memory of 1380	4604	GoogleUpdate.exe	113
PID 4604 wrote to memory of 1380	4604	GoogleUpdate.exe	113

C:\Users\Admin\AppData\Local\Temp\fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:4508
- C:\Users\Admin\AppData\Local\Temp\fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\fcb86a86a1cd1451c51964574bf5a43e_JaffaCakes118.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Checks computer location settings
  - Adds Run key to start application
  - Checks processor information in registry
  - Enumerates system info in registry
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2772
- - C:\Users\Admin\AppData\Roaming\GU\GoogleUpdate.exe
    "C:\Users\Admin\AppData\Roaming\GU\GoogleUpdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of WriteProcessMemory
    PID:4604
  - - C:\Users\Admin\AppData\Roaming\GU\GoogleUpdate.exe
      C:\Users\Admin\AppData\Roaming\GU\GoogleUpdate.exe
      4⤵
      Checks BIOS information in registry
      Executes dropped EXE
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      PID:1380

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\GU\GoogleUpdate.exe

Filesize
320KB

MD5
fcb86a86a1cd1451c51964574bf5a43e

SHA1
68690d11595eec4e60c4c7025c4137d21a12887a

SHA256
ea62993d7be8a983f105115c05ee3fe9a8967791554823e31fdc2d4d8b16d154

SHA512
ee2eabb5f730dddcea94ff6aa5e906e729f222dd1226dc31626f0a015a85fcc5e66e56f4fa09c8fa89622a9af6daaf1dffa562cd672581c82fa96f7e26742a73

Download Submit
memory/1380-60-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1380-64-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1380-63-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1380-62-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1380-61-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1380-54-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1380-59-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1380-58-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1380-56-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1380-65-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1380-57-0x0000000000A30000-0x0000000000A31000-memory.dmp

Filesize
4KB

Download
memory/1380-55-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/1380-53-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/2772-7-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/2772-45-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/2772-10-0x0000000000B20000-0x0000000000B21000-memory.dmp

Filesize
4KB

Download
memory/2772-9-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/2772-8-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/2772-6-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/2772-5-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/2772-2-0x0000000000400000-0x00000000004C5000-memory.dmp

Filesize
788KB

Download
memory/4508-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4508-3-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4508-1-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4604-52-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4604-47-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download