darkcomet | bd76dfec25932ec66a7a479c7f595eeb5b46d9dbc0a737c569c404cde5f399a4

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20250410-en
resource tags

arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2025, 15:21

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General

Target

JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Size

723KB
MD5

bea31be31b89909987683c88643b502d
SHA1

165c1b997918cd504e9f92a28e2c45a0cea55c29
SHA256

bd76dfec25932ec66a7a479c7f595eeb5b46d9dbc0a737c569c404cde5f399a4
SHA512

f408520f56f8a9a871d6e4790290c14abc61fd6c4f16823cc138586ed8c2a42115248ef65dd4d168e7330cf114d81eb66ac30aa4f6becf05871877c2f4e58cb3
SSDEEP

12288:gFLlJnnbWOtz6sVJhvaz1Qc/WdI//vfM4qwrbkniafLo6vUTyl0w/q9jJy:Q3nbWmJVJFwSddIXvfhqbiaxvRxq9I

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

molest.bounceme.net:700

Mutex

DC_MUTEX-F54S21D

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
JlZ9il58mTDg
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

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:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	JaffaCakes118_bea31be31b89909987683c88643b502d.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-1-5-21-3078542121-369484597-920690335-1000\Control Panel\International\Geo\Nation	JaffaCakes118_bea31be31b89909987683c88643b502d.exe

Executes dropped EXE 2 IoCs

pid	Process
1340	msdcsc.exe
5036	msdcsc.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-1-5-21-3078542121-369484597-920690335-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	JaffaCakes118_bea31be31b89909987683c88643b502d.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1340 set thread context of 2020	1340	msdcsc.exe	89
PID 5036 set thread context of 5432	5036	msdcsc.exe	91

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 5 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	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeSecurityPrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeTakeOwnershipPrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeLoadDriverPrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeSystemProfilePrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeSystemtimePrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeProfSingleProcessPrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeIncBasePriorityPrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeCreatePagefilePrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeBackupPrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeRestorePrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeShutdownPrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeDebugPrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeSystemEnvironmentPrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeChangeNotifyPrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeRemoteShutdownPrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeUndockPrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeManageVolumePrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeImpersonatePrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeCreateGlobalPrivilege	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: 33	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: 34	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: 35	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: 36	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe
Token: SeIncreaseQuotaPrivilege	1340	msdcsc.exe
Token: SeSecurityPrivilege	1340	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1340	msdcsc.exe
Token: SeLoadDriverPrivilege	1340	msdcsc.exe
Token: SeSystemProfilePrivilege	1340	msdcsc.exe
Token: SeSystemtimePrivilege	1340	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1340	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1340	msdcsc.exe
Token: SeCreatePagefilePrivilege	1340	msdcsc.exe
Token: SeBackupPrivilege	1340	msdcsc.exe
Token: SeRestorePrivilege	1340	msdcsc.exe
Token: SeShutdownPrivilege	1340	msdcsc.exe
Token: SeDebugPrivilege	1340	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1340	msdcsc.exe
Token: SeChangeNotifyPrivilege	1340	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1340	msdcsc.exe
Token: SeUndockPrivilege	1340	msdcsc.exe
Token: SeManageVolumePrivilege	1340	msdcsc.exe
Token: SeImpersonatePrivilege	1340	msdcsc.exe
Token: SeCreateGlobalPrivilege	1340	msdcsc.exe
Token: 33	1340	msdcsc.exe
Token: 34	1340	msdcsc.exe
Token: 35	1340	msdcsc.exe
Token: 36	1340	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	5036	msdcsc.exe
Token: SeSecurityPrivilege	5036	msdcsc.exe
Token: SeTakeOwnershipPrivilege	5036	msdcsc.exe
Token: SeLoadDriverPrivilege	5036	msdcsc.exe
Token: SeSystemProfilePrivilege	5036	msdcsc.exe
Token: SeSystemtimePrivilege	5036	msdcsc.exe
Token: SeProfSingleProcessPrivilege	5036	msdcsc.exe
Token: SeIncBasePriorityPrivilege	5036	msdcsc.exe
Token: SeCreatePagefilePrivilege	5036	msdcsc.exe
Token: SeBackupPrivilege	5036	msdcsc.exe
Token: SeRestorePrivilege	5036	msdcsc.exe
Token: SeShutdownPrivilege	5036	msdcsc.exe
Token: SeDebugPrivilege	5036	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	5036	msdcsc.exe
Token: SeChangeNotifyPrivilege	5036	msdcsc.exe
Token: SeRemoteShutdownPrivilege	5036	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5432	iexplore.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2840 wrote to memory of 1340	2840	cmd.exe	88
PID 2840 wrote to memory of 1340	2840	cmd.exe	88
PID 2840 wrote to memory of 1340	2840	cmd.exe	88
PID 1340 wrote to memory of 2020	1340	msdcsc.exe	89
PID 1340 wrote to memory of 2020	1340	msdcsc.exe	89
PID 1340 wrote to memory of 2020	1340	msdcsc.exe	89
PID 1340 wrote to memory of 2020	1340	msdcsc.exe	89
PID 1340 wrote to memory of 2020	1340	msdcsc.exe	89
PID 344 wrote to memory of 5036	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe	90
PID 344 wrote to memory of 5036	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe	90
PID 344 wrote to memory of 5036	344	JaffaCakes118_bea31be31b89909987683c88643b502d.exe	90
PID 5036 wrote to memory of 5432	5036	msdcsc.exe	91
PID 5036 wrote to memory of 5432	5036	msdcsc.exe	91
PID 5036 wrote to memory of 5432	5036	msdcsc.exe	91
PID 5036 wrote to memory of 5432	5036	msdcsc.exe	91
PID 5036 wrote to memory of 5432	5036	msdcsc.exe	91

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bea31be31b89909987683c88643b502d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bea31be31b89909987683c88643b502d.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:344
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5036
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:5432

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:2840
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
  C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1340
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2020

Network

MITRE ATT&CK Enterprise v16

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
723KB

MD5
bea31be31b89909987683c88643b502d

SHA1
165c1b997918cd504e9f92a28e2c45a0cea55c29

SHA256
bd76dfec25932ec66a7a479c7f595eeb5b46d9dbc0a737c569c404cde5f399a4

SHA512
f408520f56f8a9a871d6e4790290c14abc61fd6c4f16823cc138586ed8c2a42115248ef65dd4d168e7330cf114d81eb66ac30aa4f6becf05871877c2f4e58cb3

Download Submit
memory/344-0-0x00000000006A0000-0x00000000006A1000-memory.dmp

Filesize
4KB

Download
memory/344-10-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/1340-6-0x00000000005E0000-0x00000000005E1000-memory.dmp

Filesize
4KB

Download
memory/1340-9-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2020-7-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/5036-11-0x0000000002020000-0x0000000002021000-memory.dmp

Filesize
4KB

Download
memory/5036-13-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads