darkcomet | eb3ece6d6320f505077128076d8e12a99ebc4dc9fcde7094ccf8dcb46059a3b8

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12/10/2024, 00:28

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General

Target

NTrat.exe
Size

793KB
MD5

716e2305f98bcfcdf7b6b5834cabe354
SHA1

4dd31cdbaf110671f78a51eebb7096d1a81cb41b
SHA256

38d026ed743afc0372aa4abea764d2594d5daa82e06093aef3cf6f29a61b9923
SHA512

0d018dee698e85340476554f84a66d689d699065541bd493e7e0e2dfead415debe0e3c350389e3d629c006a499ff62a37626a990b84f6b1bb65e3c79a04142b7
SSDEEP

24576:UZ1xuVVjfFoynPaVBUR8f+kN10EB8h6ey39:0QDgok30fh6ey39

Score

10^/10

darkcomet guestnt discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

GuestNT

cndns.minidns.net:1123

Mutex

DC_MUTEX-PQXTHV7

Attributes

InstallPath
NTsoft\NTrat.exe
gencode
ZDyvfnhdmzgr
install
true
offline_keylogger
true
persistence
true
reg_key
NTrat

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:\\Users\\Admin\\Documents\\NTsoft\\NTrat.exe"	NTrat.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
912	attrib.exe
464	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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	NTrat.exe

Deletes itself 1 IoCs

pid	Process
3872	notepad.exe

Executes dropped EXE 1 IoCs

pid	Process
4204	NTrat.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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NTrat = "C:\\Users\\Admin\\Documents\\NTsoft\\NTrat.exe"	NTrat.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NTrat = "C:\\Users\\Admin\\Documents\\NTsoft\\NTrat.exe"	NTrat.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 8 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	NTrat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NTrat.exe

Modifies registry class 1 IoCs

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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4204	NTrat.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	5080	NTrat.exe
Token: SeSecurityPrivilege	5080	NTrat.exe
Token: SeTakeOwnershipPrivilege	5080	NTrat.exe
Token: SeLoadDriverPrivilege	5080	NTrat.exe
Token: SeSystemProfilePrivilege	5080	NTrat.exe
Token: SeSystemtimePrivilege	5080	NTrat.exe
Token: SeProfSingleProcessPrivilege	5080	NTrat.exe
Token: SeIncBasePriorityPrivilege	5080	NTrat.exe
Token: SeCreatePagefilePrivilege	5080	NTrat.exe
Token: SeBackupPrivilege	5080	NTrat.exe
Token: SeRestorePrivilege	5080	NTrat.exe
Token: SeShutdownPrivilege	5080	NTrat.exe
Token: SeDebugPrivilege	5080	NTrat.exe
Token: SeSystemEnvironmentPrivilege	5080	NTrat.exe
Token: SeChangeNotifyPrivilege	5080	NTrat.exe
Token: SeRemoteShutdownPrivilege	5080	NTrat.exe
Token: SeUndockPrivilege	5080	NTrat.exe
Token: SeManageVolumePrivilege	5080	NTrat.exe
Token: SeImpersonatePrivilege	5080	NTrat.exe
Token: SeCreateGlobalPrivilege	5080	NTrat.exe
Token: 33	5080	NTrat.exe
Token: 34	5080	NTrat.exe
Token: 35	5080	NTrat.exe
Token: 36	5080	NTrat.exe
Token: SeIncreaseQuotaPrivilege	4204	NTrat.exe
Token: SeSecurityPrivilege	4204	NTrat.exe
Token: SeTakeOwnershipPrivilege	4204	NTrat.exe
Token: SeLoadDriverPrivilege	4204	NTrat.exe
Token: SeSystemProfilePrivilege	4204	NTrat.exe
Token: SeSystemtimePrivilege	4204	NTrat.exe
Token: SeProfSingleProcessPrivilege	4204	NTrat.exe
Token: SeIncBasePriorityPrivilege	4204	NTrat.exe
Token: SeCreatePagefilePrivilege	4204	NTrat.exe
Token: SeBackupPrivilege	4204	NTrat.exe
Token: SeRestorePrivilege	4204	NTrat.exe
Token: SeShutdownPrivilege	4204	NTrat.exe
Token: SeDebugPrivilege	4204	NTrat.exe
Token: SeSystemEnvironmentPrivilege	4204	NTrat.exe
Token: SeChangeNotifyPrivilege	4204	NTrat.exe
Token: SeRemoteShutdownPrivilege	4204	NTrat.exe
Token: SeUndockPrivilege	4204	NTrat.exe
Token: SeManageVolumePrivilege	4204	NTrat.exe
Token: SeImpersonatePrivilege	4204	NTrat.exe
Token: SeCreateGlobalPrivilege	4204	NTrat.exe
Token: 33	4204	NTrat.exe
Token: 34	4204	NTrat.exe
Token: 35	4204	NTrat.exe
Token: 36	4204	NTrat.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4204	NTrat.exe

Suspicious use of WriteProcessMemory 54 IoCs

description	pid	Process	procid_target
PID 5080 wrote to memory of 4160	5080	NTrat.exe	86
PID 5080 wrote to memory of 4160	5080	NTrat.exe	86
PID 5080 wrote to memory of 4160	5080	NTrat.exe	86
PID 5080 wrote to memory of 5076	5080	NTrat.exe	88
PID 5080 wrote to memory of 5076	5080	NTrat.exe	88
PID 5080 wrote to memory of 5076	5080	NTrat.exe	88
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 5080 wrote to memory of 3872	5080	NTrat.exe	89
PID 4160 wrote to memory of 912	4160	cmd.exe	91
PID 4160 wrote to memory of 912	4160	cmd.exe	91
PID 4160 wrote to memory of 912	4160	cmd.exe	91
PID 5076 wrote to memory of 464	5076	cmd.exe	92
PID 5076 wrote to memory of 464	5076	cmd.exe	92
PID 5076 wrote to memory of 464	5076	cmd.exe	92
PID 5080 wrote to memory of 4204	5080	NTrat.exe	93
PID 5080 wrote to memory of 4204	5080	NTrat.exe	93
PID 5080 wrote to memory of 4204	5080	NTrat.exe	93
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94
PID 4204 wrote to memory of 4712	4204	NTrat.exe	94

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
912	attrib.exe
464	attrib.exe

C:\Users\Admin\AppData\Local\Temp\NTrat.exe
"C:\Users\Admin\AppData\Local\Temp\NTrat.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5080
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\NTrat.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4160
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\NTrat.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:912
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5076
- - 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:464
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3872
- C:\Users\Admin\Documents\NTsoft\NTrat.exe
  "C:\Users\Admin\Documents\NTsoft\NTrat.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4204
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4712

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Documents\NTsoft\NTrat.exe

Filesize
793KB

MD5
716e2305f98bcfcdf7b6b5834cabe354

SHA1
4dd31cdbaf110671f78a51eebb7096d1a81cb41b

SHA256
38d026ed743afc0372aa4abea764d2594d5daa82e06093aef3cf6f29a61b9923

SHA512
0d018dee698e85340476554f84a66d689d699065541bd493e7e0e2dfead415debe0e3c350389e3d629c006a499ff62a37626a990b84f6b1bb65e3c79a04142b7

Download Submit
memory/3872-4-0x0000000000F90000-0x0000000000F91000-memory.dmp

Filesize
4KB

Download
memory/4204-76-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4204-72-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4204-81-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4204-80-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4204-67-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4204-68-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4204-69-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4204-70-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4204-71-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4204-79-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4204-73-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4204-74-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4204-75-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4204-78-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4204-77-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/4712-63-0x0000000001270000-0x0000000001271000-memory.dmp

Filesize
4KB

Download
memory/5080-0-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/5080-1-0x00000000022C0000-0x00000000022C1000-memory.dmp

Filesize
4KB

Download
memory/5080-65-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads