darkcomet | 8adcb39dde88ee76b893c1a33abb45b70075de66a1ce1ff8ae0abdded8f67a66

Analysis

user interaction
yes
max time kernel
148s
max time network
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
27/10/2026, 17:10

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General

Target
loader.exe
Size 256KB
Sample261027-vpqwssts9m
SHA256 8adcb39dde88ee76b893c1a33abb45b70075de66a1ce1ff8ae0abdded8f67a66
MD5 bd5417f24f2d21166391a3ceb4818c17
SHA1 06b6f371a3125d0977eb27510fbc846bacdbbbf8
SHA512 2313e31a727f20011e0618c16a66d29ef417cf2eeb554b43445fc309658ab222bd6a1d700f0564797a3d137ddc2d9fb9ae3d394f6e0880243e279956cdbc4f22
SSDEEP 6144:IcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37zUh:IcW7KEZlPzCy37Q
TLSH
T17F4423A977C99C83EAFB69BC32594B145B4C33DF19FE83629F200108219695617C763D
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

sazan defense_evasion discovery execution darkcomet persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

obcahecoy0.localto.net:10461
obcahecoy0.localto.net:6154

Mutex

DC_MUTEX-7X2GKWR

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
swp9YgWWhJrX
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

rc4.plain

Signatures

Family: 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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	loader.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
3236	attrib.exe
2900	attrib.exe

Executes dropped EXE 2 IoCs

pid	Process
2980	msdcsc.exe
2880	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-1-5-21-461973139-3212354679-1508698038-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	loader.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-461973139-3212354679-1508698038-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4300-0-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4300-2-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/files/0x000e00000001c518-4.dat	upx
behavioral2/memory/2980-5-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/2980-6-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/2880-8-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4300-9-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/2980-10-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/2980-11-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/2980-12-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/2980-13-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/2980-15-0x0000000000400000-0x00000000004BA000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4360	cmd.exe
1952	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	msdcsc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	msdcsc.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	loader.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	loader.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	msdcsc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{d3162b92-9365-467a-956b-92703aca08af}\Instance\	loader.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4300	loader.exe
Token: SeSecurityPrivilege	4300	loader.exe
Token: SeTakeOwnershipPrivilege	4300	loader.exe
Token: SeLoadDriverPrivilege	4300	loader.exe
Token: SeSystemProfilePrivilege	4300	loader.exe
Token: SeSystemtimePrivilege	4300	loader.exe
Token: SeProfSingleProcessPrivilege	4300	loader.exe
Token: SeIncBasePriorityPrivilege	4300	loader.exe
Token: SeCreatePagefilePrivilege	4300	loader.exe
Token: SeBackupPrivilege	4300	loader.exe
Token: SeRestorePrivilege	4300	loader.exe
Token: SeShutdownPrivilege	4300	loader.exe
Token: SeDebugPrivilege	4300	loader.exe
Token: SeSystemEnvironmentPrivilege	4300	loader.exe
Token: SeChangeNotifyPrivilege	4300	loader.exe
Token: SeRemoteShutdownPrivilege	4300	loader.exe
Token: SeUndockPrivilege	4300	loader.exe
Token: SeManageVolumePrivilege	4300	loader.exe
Token: SeImpersonatePrivilege	4300	loader.exe
Token: SeCreateGlobalPrivilege	4300	loader.exe
Token: 33	4300	loader.exe
Token: 34	4300	loader.exe
Token: 35	4300	loader.exe
Token: 36	4300	loader.exe
Token: SeIncreaseQuotaPrivilege	2980	msdcsc.exe
Token: SeSecurityPrivilege	2980	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2980	msdcsc.exe
Token: SeLoadDriverPrivilege	2980	msdcsc.exe
Token: SeSystemProfilePrivilege	2980	msdcsc.exe
Token: SeSystemtimePrivilege	2980	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2980	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2980	msdcsc.exe
Token: SeCreatePagefilePrivilege	2980	msdcsc.exe
Token: SeBackupPrivilege	2980	msdcsc.exe
Token: SeRestorePrivilege	2980	msdcsc.exe
Token: SeShutdownPrivilege	2980	msdcsc.exe
Token: SeDebugPrivilege	2980	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2980	msdcsc.exe
Token: SeChangeNotifyPrivilege	2980	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2980	msdcsc.exe
Token: SeUndockPrivilege	2980	msdcsc.exe
Token: SeManageVolumePrivilege	2980	msdcsc.exe
Token: SeImpersonatePrivilege	2980	msdcsc.exe
Token: SeCreateGlobalPrivilege	2980	msdcsc.exe
Token: 33	2980	msdcsc.exe
Token: 34	2980	msdcsc.exe
Token: 35	2980	msdcsc.exe
Token: 36	2980	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	2880	msdcsc.exe
Token: SeSecurityPrivilege	2880	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2880	msdcsc.exe
Token: SeLoadDriverPrivilege	2880	msdcsc.exe
Token: SeSystemProfilePrivilege	2880	msdcsc.exe
Token: SeSystemtimePrivilege	2880	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2880	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2880	msdcsc.exe
Token: SeCreatePagefilePrivilege	2880	msdcsc.exe
Token: SeBackupPrivilege	2880	msdcsc.exe
Token: SeRestorePrivilege	2880	msdcsc.exe
Token: SeShutdownPrivilege	2880	msdcsc.exe
Token: SeDebugPrivilege	2880	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2880	msdcsc.exe
Token: SeChangeNotifyPrivilege	2880	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2880	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2980	msdcsc.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4300 wrote to memory of 4360	4300	loader.exe	89
PID 4300 wrote to memory of 1952	4300	loader.exe	91
PID 4360 wrote to memory of 2900	4360	cmd.exe	94
PID 1952 wrote to memory of 3236	1952	cmd.exe	95
PID 2980 wrote to memory of 3560	2980	msdcsc.exe	97
PID 2980 wrote to memory of 3560	2980	msdcsc.exe	97
PID 4300 wrote to memory of 2880	4300	loader.exe	98

Views/modifies file attributes 1 TTPs 2 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2900	attrib.exe
3236	attrib.exe

C:\Users\Admin\AppData\Local\Temp\loader.exe
"C:\Users\Admin\AppData\Local\Temp\loader.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4300
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\loader.exe" +s +h
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4360
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\loader.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2900
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1952
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:3236
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  PID:2880

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
1⤵
- Executes dropped EXE
- Adds Run key to start application
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2980
- C:\Windows\notepad.exe
  notepad
  2⤵
  PID:3560

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

msdcsc.exe

Path C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Size 256KB
SHA256 8adcb39dde88ee76b893c1a33abb45b70075de66a1ce1ff8ae0abdded8f67a66
MD5 bd5417f24f2d21166391a3ceb4818c17
SHA1 06b6f371a3125d0977eb27510fbc846bacdbbbf8
SHA512 2313e31a727f20011e0618c16a66d29ef417cf2eeb554b43445fc309658ab222bd6a1d700f0564797a3d137ddc2d9fb9ae3d394f6e0880243e279956cdbc4f22
SSDEEP 6144:IcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37zUh:IcW7KEZlPzCy37Q
TLSH
T17F4423A977C99C83EAFB69BC32594B145B4C33DF19FE83629F200108219695617C763D
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2880-8-0x0000000000400000-0x00000000004BA000-memory.dmp

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memory/2980-5-0x0000000000400000-0x00000000004BA000-memory.dmp

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memory/2980-6-0x0000000000400000-0x00000000004BA000-memory.dmp

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memory/2980-10-0x0000000000400000-0x00000000004BA000-memory.dmp

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memory/2980-11-0x0000000000400000-0x00000000004BA000-memory.dmp

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memory/2980-12-0x0000000000400000-0x00000000004BA000-memory.dmp

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memory/2980-13-0x0000000000400000-0x00000000004BA000-memory.dmp

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memory/2980-15-0x0000000000400000-0x00000000004BA000-memory.dmp

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memory/4300-2-0x0000000000400000-0x00000000004BA000-memory.dmp

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memory/4300-1-0x00000000004B9000-0x00000000004BA000-memory.dmp

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memory/4300-0-0x0000000000400000-0x00000000004BA000-memory.dmp

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memory/4300-9-0x0000000000400000-0x00000000004BA000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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