darkcomet | 5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551

Analysis

max time kernel
120s
max time network
121s
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, 20:20

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General

Target

5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Size

283KB
MD5

6c34fdea65a4058dd18567b20209b950
SHA1

a7d7d0e2876dfce3b96b47e74b4699fbd6bb3bec
SHA256

5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551
SHA512

ae3bb1a0640d9641a545bc3d0c44388ce213f5049e1a896cf7e0b6fa1a8da755a9da7dc6dc29d294f4a4fdb9e907959cf0cb2fa104d08eac6c79915c87c7528d
SSDEEP

6144:ycNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37hjW:ycW7KEZlPzCy37hjW

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"	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe

Executes dropped EXE 1 IoCs

pid	Process
4856	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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\msdcsc.exe"	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4856 set thread context of 5012	4856	msdcsc.exe	83

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4496-0-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/files/0x0008000000023c7f-6.dat	upx
behavioral2/memory/4856-62-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/5012-64-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/4856-66-0x0000000000400000-0x00000000004C7000-memory.dmp	upx
behavioral2/memory/4496-68-0x0000000000400000-0x00000000004C7000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\MSDCSC\msdcsc.exe	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
File opened for modification	C:\Windows\MSDCSC\msdcsc.exe	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
File opened for modification	C:\Windows\MSDCSC\	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.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	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5012	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeSecurityPrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeTakeOwnershipPrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeLoadDriverPrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeSystemProfilePrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeSystemtimePrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeProfSingleProcessPrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeIncBasePriorityPrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeCreatePagefilePrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeBackupPrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeRestorePrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeShutdownPrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeDebugPrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeSystemEnvironmentPrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeChangeNotifyPrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeRemoteShutdownPrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeUndockPrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeManageVolumePrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeImpersonatePrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeCreateGlobalPrivilege	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: 33	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: 34	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: 35	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: 36	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
Token: SeIncreaseQuotaPrivilege	4856	msdcsc.exe
Token: SeSecurityPrivilege	4856	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4856	msdcsc.exe
Token: SeLoadDriverPrivilege	4856	msdcsc.exe
Token: SeSystemProfilePrivilege	4856	msdcsc.exe
Token: SeSystemtimePrivilege	4856	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4856	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4856	msdcsc.exe
Token: SeCreatePagefilePrivilege	4856	msdcsc.exe
Token: SeBackupPrivilege	4856	msdcsc.exe
Token: SeRestorePrivilege	4856	msdcsc.exe
Token: SeShutdownPrivilege	4856	msdcsc.exe
Token: SeDebugPrivilege	4856	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4856	msdcsc.exe
Token: SeChangeNotifyPrivilege	4856	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4856	msdcsc.exe
Token: SeUndockPrivilege	4856	msdcsc.exe
Token: SeManageVolumePrivilege	4856	msdcsc.exe
Token: SeImpersonatePrivilege	4856	msdcsc.exe
Token: SeCreateGlobalPrivilege	4856	msdcsc.exe
Token: 33	4856	msdcsc.exe
Token: 34	4856	msdcsc.exe
Token: 35	4856	msdcsc.exe
Token: 36	4856	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	5012	iexplore.exe
Token: SeSecurityPrivilege	5012	iexplore.exe
Token: SeTakeOwnershipPrivilege	5012	iexplore.exe
Token: SeLoadDriverPrivilege	5012	iexplore.exe
Token: SeSystemProfilePrivilege	5012	iexplore.exe
Token: SeSystemtimePrivilege	5012	iexplore.exe
Token: SeProfSingleProcessPrivilege	5012	iexplore.exe
Token: SeIncBasePriorityPrivilege	5012	iexplore.exe
Token: SeCreatePagefilePrivilege	5012	iexplore.exe
Token: SeBackupPrivilege	5012	iexplore.exe
Token: SeRestorePrivilege	5012	iexplore.exe
Token: SeShutdownPrivilege	5012	iexplore.exe
Token: SeDebugPrivilege	5012	iexplore.exe
Token: SeSystemEnvironmentPrivilege	5012	iexplore.exe
Token: SeChangeNotifyPrivilege	5012	iexplore.exe
Token: SeRemoteShutdownPrivilege	5012	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5012	iexplore.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 4496 wrote to memory of 4856	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe	82
PID 4496 wrote to memory of 4856	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe	82
PID 4496 wrote to memory of 4856	4496	5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe	82
PID 4856 wrote to memory of 5012	4856	msdcsc.exe	83
PID 4856 wrote to memory of 5012	4856	msdcsc.exe	83
PID 4856 wrote to memory of 5012	4856	msdcsc.exe	83
PID 4856 wrote to memory of 5012	4856	msdcsc.exe	83
PID 4856 wrote to memory of 5012	4856	msdcsc.exe	83
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84
PID 5012 wrote to memory of 2692	5012	iexplore.exe	84

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\5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
"C:\Users\Admin\AppData\Local\Temp\5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.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:4496
- 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:4856
- - 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:5012
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      System Location Discovery: System Language Discovery
      PID:2692

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
6c34fdea65a4058dd18567b20209b950

SHA1
a7d7d0e2876dfce3b96b47e74b4699fbd6bb3bec

SHA256
5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551

SHA512
ae3bb1a0640d9641a545bc3d0c44388ce213f5049e1a896cf7e0b6fa1a8da755a9da7dc6dc29d294f4a4fdb9e907959cf0cb2fa104d08eac6c79915c87c7528d

Download Submit
memory/2692-67-0x00000000010E0000-0x00000000010E1000-memory.dmp

Filesize
4KB

Download
memory/4496-0-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/4496-1-0x0000000002500000-0x0000000002501000-memory.dmp

Filesize
4KB

Download
memory/4496-68-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/4856-62-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/4856-63-0x00000000009D0000-0x00000000009D1000-memory.dmp

Filesize
4KB

Download
memory/4856-66-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download
memory/5012-64-0x0000000000400000-0x00000000004C7000-memory.dmp

Filesize
796KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads