darkcomet | 5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
25/06/2024, 21:48

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General

Target
5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Size 659KB
Sample240625-1nvfgsvgqa
SHA256 5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc
MD5 261b844e6da25c92ae954e3ea1aa8e6d
SHA1 e47c91f39747414b4db6395657e07773fded1b8d
SHA512 3bebb565bb4b815cddbb42e031faadd9e387929ea5e8824da1baa96861281842b3b426114a4c04c03386332492a997477c1ce7be2ad62a309dbcc20d02c9473f
SSDEEP 12288:G9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h2:iZ1xuVVjfFoynPaVBUR8f+kN10EBo
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet kurban evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

kurban

192.168.1.1:1604

Mutex

DC_MUTEX-C3VMGYC

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
wlpTgvAh1kxx
install
true
offline_keylogger
true
persistence
true
reg_key
system

Signatures

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:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
3572	attrib.exe
2124	attrib.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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe

Executes dropped EXE 1 IoCs

pid	Process
1080	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-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeSecurityPrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeTakeOwnershipPrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeLoadDriverPrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeSystemProfilePrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeSystemtimePrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeProfSingleProcessPrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeIncBasePriorityPrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeCreatePagefilePrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeBackupPrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeRestorePrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeShutdownPrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeDebugPrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeSystemEnvironmentPrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeChangeNotifyPrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeRemoteShutdownPrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeUndockPrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeManageVolumePrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeImpersonatePrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeCreateGlobalPrivilege	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: 33	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: 34	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: 35	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: 36	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
Token: SeIncreaseQuotaPrivilege	1080	msdcsc.exe
Token: SeSecurityPrivilege	1080	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1080	msdcsc.exe
Token: SeLoadDriverPrivilege	1080	msdcsc.exe
Token: SeSystemProfilePrivilege	1080	msdcsc.exe
Token: SeSystemtimePrivilege	1080	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1080	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1080	msdcsc.exe
Token: SeCreatePagefilePrivilege	1080	msdcsc.exe
Token: SeBackupPrivilege	1080	msdcsc.exe
Token: SeRestorePrivilege	1080	msdcsc.exe
Token: SeShutdownPrivilege	1080	msdcsc.exe
Token: SeDebugPrivilege	1080	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1080	msdcsc.exe
Token: SeChangeNotifyPrivilege	1080	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1080	msdcsc.exe
Token: SeUndockPrivilege	1080	msdcsc.exe
Token: SeManageVolumePrivilege	1080	msdcsc.exe
Token: SeImpersonatePrivilege	1080	msdcsc.exe
Token: SeCreateGlobalPrivilege	1080	msdcsc.exe
Token: 33	1080	msdcsc.exe
Token: 34	1080	msdcsc.exe
Token: 35	1080	msdcsc.exe
Token: 36	1080	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1080	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 3276 wrote to memory of 5116	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe	86
PID 3276 wrote to memory of 5116	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe	86
PID 3276 wrote to memory of 5116	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe	86
PID 3276 wrote to memory of 3500	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe	88
PID 3276 wrote to memory of 3500	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe	88
PID 3276 wrote to memory of 3500	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe	88
PID 5116 wrote to memory of 3572	5116	cmd.exe	90
PID 5116 wrote to memory of 3572	5116	cmd.exe	90
PID 5116 wrote to memory of 3572	5116	cmd.exe	90
PID 3500 wrote to memory of 2124	3500	cmd.exe	91
PID 3500 wrote to memory of 2124	3500	cmd.exe	91
PID 3500 wrote to memory of 2124	3500	cmd.exe	91
PID 3276 wrote to memory of 1080	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe	92
PID 3276 wrote to memory of 1080	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe	92
PID 3276 wrote to memory of 1080	3276	5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe	92
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93
PID 1080 wrote to memory of 2380	1080	msdcsc.exe	93

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3572	attrib.exe
2124	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe
"C:\Users\Admin\AppData\Local\Temp\5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3276
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5116
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:3572
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3500
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2124
- C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
  "C:\Windows\system32\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1080
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:2380

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

msdcsc.exe

Path C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
Size 659KB
SHA256 5c2967e458b1ec2d30673da72b184e01e4cf920ee9d1d6ba4dce0327ee18bfdc
MD5 261b844e6da25c92ae954e3ea1aa8e6d
SHA1 e47c91f39747414b4db6395657e07773fded1b8d
SHA512 3bebb565bb4b815cddbb42e031faadd9e387929ea5e8824da1baa96861281842b3b426114a4c04c03386332492a997477c1ce7be2ad62a309dbcc20d02c9473f
SSDEEP 12288:G9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h2:iZ1xuVVjfFoynPaVBUR8f+kN10EBo
MD5 SHA1 SHA512 SSDEEP

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memory/1080-62-0x0000000002170000-0x0000000002171000-memory.dmp

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memory/1080-65-0x0000000000400000-0x00000000004B2000-memory.dmp

Download

memory/1080-67-0x0000000000400000-0x00000000004B2000-memory.dmp

Download

memory/2380-63-0x0000000001090000-0x0000000001091000-memory.dmp

Download

memory/3276-0-0x0000000002170000-0x0000000002171000-memory.dmp

Download

memory/3276-64-0x0000000000400000-0x00000000004B2000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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