darkcomet | 6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5

Analysis

max time kernel
119s
max time network
115s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-01-2025 20:02

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General

Target

6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Size

283KB
MD5

bff9a9f371171e16afab59da8dfdc680
SHA1

4c5c35c997754b5d99907b4c4c1c45d08b37cc0f
SHA256

6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5
SHA512

e979fb4525aca5d8314bbc2c9e6241859771ac425606921260d2cd8d6e9aacb6c5d9a8105c3b260d9d4a7f7c88936077dd6375f69d5050331d679a3031b1ee64
SSDEEP

6144:ycNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37hjWX:ycW7KEZlPzCy37hjWX

Score

10^/10

darkcomet tio discovery evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

tio

2.82.41.139:80

Mutex

DC_MUTEX-277EST2

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
EnEvlyl9AxvG
install
true
offline_keylogger
true
persistence
false
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:\\Windows\\MSDCSC\\msdcsc.exe"	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe

Modifies firewall policy service 3 TTPs 6 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	iexplore.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	iexplore.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	iexplore.exe

Modifies security service 2 TTPs 2 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	iexplore.exe

Windows security bypass 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	iexplore.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	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe

Executes dropped EXE 1 IoCs

pid	Process
768	msdcsc.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\msdcsc.exe"	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 768 set thread context of 2264	768	msdcsc.exe	84

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4836-0-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/files/0x0007000000023c81-6.dat	upx
behavioral2/memory/768-62-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/768-66-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/2264-64-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/4836-69-0x0000000000400000-0x00000000004C7000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\MSDCSC\msdcsc.exe	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
File opened for modification	C:\Windows\MSDCSC\msdcsc.exe	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
File opened for modification	C:\Windows\MSDCSC\	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.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	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.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	notepad.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2264	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeSecurityPrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeTakeOwnershipPrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeLoadDriverPrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeSystemProfilePrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeSystemtimePrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeProfSingleProcessPrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeIncBasePriorityPrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeCreatePagefilePrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeBackupPrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeRestorePrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeShutdownPrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeDebugPrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeSystemEnvironmentPrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeChangeNotifyPrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeRemoteShutdownPrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeUndockPrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeManageVolumePrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeImpersonatePrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeCreateGlobalPrivilege	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: 33	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: 34	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: 35	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: 36	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
Token: SeIncreaseQuotaPrivilege	768	msdcsc.exe
Token: SeSecurityPrivilege	768	msdcsc.exe
Token: SeTakeOwnershipPrivilege	768	msdcsc.exe
Token: SeLoadDriverPrivilege	768	msdcsc.exe
Token: SeSystemProfilePrivilege	768	msdcsc.exe
Token: SeSystemtimePrivilege	768	msdcsc.exe
Token: SeProfSingleProcessPrivilege	768	msdcsc.exe
Token: SeIncBasePriorityPrivilege	768	msdcsc.exe
Token: SeCreatePagefilePrivilege	768	msdcsc.exe
Token: SeBackupPrivilege	768	msdcsc.exe
Token: SeRestorePrivilege	768	msdcsc.exe
Token: SeShutdownPrivilege	768	msdcsc.exe
Token: SeDebugPrivilege	768	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	768	msdcsc.exe
Token: SeChangeNotifyPrivilege	768	msdcsc.exe
Token: SeRemoteShutdownPrivilege	768	msdcsc.exe
Token: SeUndockPrivilege	768	msdcsc.exe
Token: SeManageVolumePrivilege	768	msdcsc.exe
Token: SeImpersonatePrivilege	768	msdcsc.exe
Token: SeCreateGlobalPrivilege	768	msdcsc.exe
Token: 33	768	msdcsc.exe
Token: 34	768	msdcsc.exe
Token: 35	768	msdcsc.exe
Token: 36	768	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	2264	iexplore.exe
Token: SeSecurityPrivilege	2264	iexplore.exe
Token: SeTakeOwnershipPrivilege	2264	iexplore.exe
Token: SeLoadDriverPrivilege	2264	iexplore.exe
Token: SeSystemProfilePrivilege	2264	iexplore.exe
Token: SeSystemtimePrivilege	2264	iexplore.exe
Token: SeProfSingleProcessPrivilege	2264	iexplore.exe
Token: SeIncBasePriorityPrivilege	2264	iexplore.exe
Token: SeCreatePagefilePrivilege	2264	iexplore.exe
Token: SeBackupPrivilege	2264	iexplore.exe
Token: SeRestorePrivilege	2264	iexplore.exe
Token: SeShutdownPrivilege	2264	iexplore.exe
Token: SeDebugPrivilege	2264	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2264	iexplore.exe
Token: SeChangeNotifyPrivilege	2264	iexplore.exe
Token: SeRemoteShutdownPrivilege	2264	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2264	iexplore.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 4836 wrote to memory of 768	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe	83
PID 4836 wrote to memory of 768	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe	83
PID 4836 wrote to memory of 768	4836	6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe	83
PID 768 wrote to memory of 2264	768	msdcsc.exe	84
PID 768 wrote to memory of 2264	768	msdcsc.exe	84
PID 768 wrote to memory of 2264	768	msdcsc.exe	84
PID 768 wrote to memory of 2264	768	msdcsc.exe	84
PID 768 wrote to memory of 2264	768	msdcsc.exe	84
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85
PID 2264 wrote to memory of 2356	2264	iexplore.exe	85

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	msdcsc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe
"C:\Users\Admin\AppData\Local\Temp\6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4836
- C:\Windows\MSDCSC\msdcsc.exe
  "C:\Windows\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies firewall policy service
  - Modifies security service
  - Windows security bypass
  - Executes dropped EXE
  - Windows security modification
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:768
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - Modifies firewall policy service
    - Modifies security service
    - Windows security bypass
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2264
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      System Location Discovery: System Language Discovery
      PID:2356

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

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:\Windows\MSDCSC\msdcsc.exe

Filesize
283KB

MD5
bff9a9f371171e16afab59da8dfdc680

SHA1
4c5c35c997754b5d99907b4c4c1c45d08b37cc0f

SHA256
6a8f1e064f0b2da3fa45022c5ed1408256c8f12c9631442eb5930277916485f5

SHA512
e979fb4525aca5d8314bbc2c9e6241859771ac425606921260d2cd8d6e9aacb6c5d9a8105c3b260d9d4a7f7c88936077dd6375f69d5050331d679a3031b1ee64

Download Submit
memory/768-62-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/768-66-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/768-63-0x0000000000B70000-0x0000000000B71000-memory.dmp

Filesize
4KB

Download
memory/2264-64-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/2356-67-0x00000000007B0000-0x00000000007B1000-memory.dmp

Filesize
4KB

Download
memory/4836-0-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/4836-1-0x0000000002510000-0x0000000002511000-memory.dmp

Filesize
4KB

Download
memory/4836-69-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads