darkcomet | 9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287

General

Target

9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Size

725KB
MD5

6809bd68abcecfb8a7f3954d564933fd
SHA1

d8a2d14f5c2dcbeceffe1aec938a125612e62932
SHA256

9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287
SHA512

11d1bce942cf8ed0cebfde70bc9727d712124fa3f7993328cfe30c8261282215ea10413a2031722c521e29577d44d539001bd7ea6f30c7da3b834bbe76be4718
SSDEEP

12288:V9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hwQrMxtHw:fZ1xuVVjfFoynPaVBUR8f+kN10EBFMxS

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

dsobonus.myvnc.com:1604

Mutex

DC_MUTEX-BT41MG9

Attributes

InstallPath
MSDCSC\explorer.exe
gencode
eZmzPEQdRN7P
install
true
offline_keylogger
true
persistence
true
reg_key
explorer

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

T1004

Modify Registry

T1112

Processes:

9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe

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\\explorer.exe"	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

explorer.exe

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

Executes dropped EXE 1 IoCs

Processes:

explorer.exe

pid process

4084 explorer.exe
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

4788 attrib.exe
2112 attrib.exe

pid	process
4084	explorer.exe

pid	process
4788	attrib.exe
2112	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

Processes:

9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exeexplorer.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorer = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\explorer.exe"	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\explorer = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\explorer.exe"	explorer.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

explorer.exe

pid process

4084 explorer.exe

pid	process
4084	explorer.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exeexplorer.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeSecurityPrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeTakeOwnershipPrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeLoadDriverPrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeSystemProfilePrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeSystemtimePrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeProfSingleProcessPrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeIncBasePriorityPrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeCreatePagefilePrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeBackupPrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeRestorePrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeShutdownPrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeDebugPrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeSystemEnvironmentPrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeChangeNotifyPrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeRemoteShutdownPrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeUndockPrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeManageVolumePrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeImpersonatePrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeCreateGlobalPrivilege	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: 33	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: 34	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: 35	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: 36	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
Token: SeIncreaseQuotaPrivilege	4084	explorer.exe
Token: SeSecurityPrivilege	4084	explorer.exe
Token: SeTakeOwnershipPrivilege	4084	explorer.exe
Token: SeLoadDriverPrivilege	4084	explorer.exe
Token: SeSystemProfilePrivilege	4084	explorer.exe
Token: SeSystemtimePrivilege	4084	explorer.exe
Token: SeProfSingleProcessPrivilege	4084	explorer.exe
Token: SeIncBasePriorityPrivilege	4084	explorer.exe
Token: SeCreatePagefilePrivilege	4084	explorer.exe
Token: SeBackupPrivilege	4084	explorer.exe
Token: SeRestorePrivilege	4084	explorer.exe
Token: SeShutdownPrivilege	4084	explorer.exe
Token: SeDebugPrivilege	4084	explorer.exe
Token: SeSystemEnvironmentPrivilege	4084	explorer.exe
Token: SeChangeNotifyPrivilege	4084	explorer.exe
Token: SeRemoteShutdownPrivilege	4084	explorer.exe
Token: SeUndockPrivilege	4084	explorer.exe
Token: SeManageVolumePrivilege	4084	explorer.exe
Token: SeImpersonatePrivilege	4084	explorer.exe
Token: SeCreateGlobalPrivilege	4084	explorer.exe
Token: 33	4084	explorer.exe
Token: 34	4084	explorer.exe
Token: 35	4084	explorer.exe
Token: 36	4084	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

explorer.exe

pid process

4084 explorer.exe

pid	process
4084	explorer.exe

Suspicious use of WriteProcessMemory 54 IoCs

Processes:

9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.execmd.execmd.exeexplorer.exe

description	pid	process	target process
PID 4064 wrote to memory of 528	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	cmd.exe
PID 4064 wrote to memory of 528	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	cmd.exe
PID 4064 wrote to memory of 528	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	cmd.exe
PID 4064 wrote to memory of 4180	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	cmd.exe
PID 4064 wrote to memory of 4180	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	cmd.exe
PID 4064 wrote to memory of 4180	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	cmd.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4064 wrote to memory of 4088	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	notepad.exe
PID 4180 wrote to memory of 4788	4180	cmd.exe	attrib.exe
PID 4180 wrote to memory of 4788	4180	cmd.exe	attrib.exe
PID 4180 wrote to memory of 4788	4180	cmd.exe	attrib.exe
PID 528 wrote to memory of 2112	528	cmd.exe	attrib.exe
PID 528 wrote to memory of 2112	528	cmd.exe	attrib.exe
PID 528 wrote to memory of 2112	528	cmd.exe	attrib.exe
PID 4064 wrote to memory of 4084	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	explorer.exe
PID 4064 wrote to memory of 4084	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	explorer.exe
PID 4064 wrote to memory of 4084	4064	9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe	explorer.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe
PID 4084 wrote to memory of 5052	4084	explorer.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

2112 attrib.exe
4788 attrib.exe

pid	process
2112	attrib.exe
4788	attrib.exe

C:\Users\Admin\AppData\Local\Temp\9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe
"C:\Users\Admin\AppData\Local\Temp\9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:528
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2112
- 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:4180
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4788
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  PID:4088
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\explorer.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\explorer.exe"
  2⤵
  - Modifies firewall policy service
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4084
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:5052

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

2

T1158

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\explorer.exe

Filesize
725KB

MD5
6809bd68abcecfb8a7f3954d564933fd

SHA1
d8a2d14f5c2dcbeceffe1aec938a125612e62932

SHA256
9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287

SHA512
11d1bce942cf8ed0cebfde70bc9727d712124fa3f7993328cfe30c8261282215ea10413a2031722c521e29577d44d539001bd7ea6f30c7da3b834bbe76be4718

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSDCSC\explorer.exe

Filesize
725KB

MD5
6809bd68abcecfb8a7f3954d564933fd

SHA1
d8a2d14f5c2dcbeceffe1aec938a125612e62932

SHA256
9140e447983f9b32db8d93cb72e12dfb885a7c32f1d25fc405b39551934b4287

SHA512
11d1bce942cf8ed0cebfde70bc9727d712124fa3f7993328cfe30c8261282215ea10413a2031722c521e29577d44d539001bd7ea6f30c7da3b834bbe76be4718

Download Submit
memory/528-132-0x0000000000000000-mapping.dmp

Download
memory/2112-136-0x0000000000000000-mapping.dmp

Download
memory/4084-137-0x0000000000000000-mapping.dmp

Download
memory/4088-134-0x0000000000000000-mapping.dmp

Download
memory/4180-133-0x0000000000000000-mapping.dmp

Download
memory/4788-135-0x0000000000000000-mapping.dmp

Download
memory/5052-140-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads