darkcomet | 9b3c3f216155ab683b72ab4062b0a57ee3194e49cc73b1354ebc38f6c4b671ba

Analysis

max time kernel
149s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2024 13:55

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General

Target

b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Size

251KB
MD5

b88941407d61d4a039208c3e9ef7c620
SHA1

f02266d031d4db0d610be6df08895299fc72c8be
SHA256

9b3c3f216155ab683b72ab4062b0a57ee3194e49cc73b1354ebc38f6c4b671ba
SHA512

4a6fd8640ab96a3ea1885f22a5cf39648e14acd3c3a410d3020773ec7503a8c363d88b4ff1ff7333473790eebc78c5da78f98812a798f2e4ab3597ffc1d69a50
SSDEEP

6144:QcNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0PHQ:QcWkbgTYWnYnt/IDYhP

Score

10^/10

darkcomet guest16 discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

127.0.0.1:1604

Mutex

DC_MUTEX-Z7L11J7

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
rPFWXHl9UQEN
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

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\\Local\\Temp\\MSDCSC\\msdcsc.exe"	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4432	notepad.exe

Executes dropped EXE 1 IoCs

pid	Process
4820	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.exe

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2344-0-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/files/0x0009000000023bac-7.dat	upx
behavioral2/memory/2344-64-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4820-66-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4820-67-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4820-70-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4820-71-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4820-72-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4820-74-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4820-76-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4820-77-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4820-80-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4820-81-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

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	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeSecurityPrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeBackupPrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeRestorePrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeShutdownPrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeDebugPrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeUndockPrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: 33	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: 34	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: 35	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: 36	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4820	msdcsc.exe
Token: SeSecurityPrivilege	4820	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4820	msdcsc.exe
Token: SeLoadDriverPrivilege	4820	msdcsc.exe
Token: SeSystemProfilePrivilege	4820	msdcsc.exe
Token: SeSystemtimePrivilege	4820	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4820	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4820	msdcsc.exe
Token: SeCreatePagefilePrivilege	4820	msdcsc.exe
Token: SeBackupPrivilege	4820	msdcsc.exe
Token: SeRestorePrivilege	4820	msdcsc.exe
Token: SeShutdownPrivilege	4820	msdcsc.exe
Token: SeDebugPrivilege	4820	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4820	msdcsc.exe
Token: SeChangeNotifyPrivilege	4820	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4820	msdcsc.exe
Token: SeUndockPrivilege	4820	msdcsc.exe
Token: SeManageVolumePrivilege	4820	msdcsc.exe
Token: SeImpersonatePrivilege	4820	msdcsc.exe
Token: SeCreateGlobalPrivilege	4820	msdcsc.exe
Token: 33	4820	msdcsc.exe
Token: 34	4820	msdcsc.exe
Token: 35	4820	msdcsc.exe
Token: 36	4820	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4820	msdcsc.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4432	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	83
PID 2344 wrote to memory of 4820	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	84
PID 2344 wrote to memory of 4820	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	84
PID 2344 wrote to memory of 4820	2344	b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe	84

C:\Users\Admin\AppData\Local\Temp\b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b88941407d61d4a039208c3e9ef7c620_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4432
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4820

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\MSDCSC\msdcsc.exe

Filesize
251KB

MD5
b88941407d61d4a039208c3e9ef7c620

SHA1
f02266d031d4db0d610be6df08895299fc72c8be

SHA256
9b3c3f216155ab683b72ab4062b0a57ee3194e49cc73b1354ebc38f6c4b671ba

SHA512
4a6fd8640ab96a3ea1885f22a5cf39648e14acd3c3a410d3020773ec7503a8c363d88b4ff1ff7333473790eebc78c5da78f98812a798f2e4ab3597ffc1d69a50

Download Submit
memory/2344-64-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2344-1-0x0000000000A60000-0x0000000000A61000-memory.dmp

Filesize
4KB

Download
memory/2344-0-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4432-4-0x0000000000D60000-0x0000000000D61000-memory.dmp

Filesize
4KB

Download
memory/4820-68-0x00000000009B0000-0x00000000009B1000-memory.dmp

Filesize
4KB

Download
memory/4820-66-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4820-67-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4820-63-0x00000000009B0000-0x00000000009B1000-memory.dmp

Filesize
4KB

Download
memory/4820-70-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4820-71-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4820-72-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4820-74-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4820-76-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4820-77-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4820-80-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4820-81-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads