darkcomet | 5855c8eb2e617be1ebbcf9d103e2cc97597e0aeaa039942e54e7032e3ae7ee46

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-12-2024 00:06

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General

Target

5855c8eb2e617be1ebbcf9d103e2cc97597e0aeaa039942e54e7032e3ae7ee46.exe
Size

710KB
MD5

4b216edf0514bf8a2812c9cd6734422a
SHA1

3da9e352541eb69701531ecd8741f525b2b1f599
SHA256

5855c8eb2e617be1ebbcf9d103e2cc97597e0aeaa039942e54e7032e3ae7ee46
SHA512

0b84429ea60a68c546ac9295fb939f97b78d164423098293c047d9745ea9ed23a36f6d7366884a0f7f3df032c1fd9497dd4cb51535bda94cb48de193c5718664
SSDEEP

12288:t0ZdRl1Mm5vm9V/dvveVTDIYewwQjwm1RUCjOmZM6E+IfvzSCffk180+FK58H9Kf:WZbl1Mm5vm9V1vGVlwQjwCRUCjOmZM6T

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

testingr.zapto.org:8086

Mutex

DC_MUTEX-F54S21D

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
FnZJlwmWHx73
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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	winload.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	winload.exe

Executes dropped EXE 2 IoCs

pid	Process
1444	winload.exe
2568	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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	winload.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 3 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	5855c8eb2e617be1ebbcf9d103e2cc97597e0aeaa039942e54e7032e3ae7ee46.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winload.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1444	winload.exe
Token: SeSecurityPrivilege	1444	winload.exe
Token: SeTakeOwnershipPrivilege	1444	winload.exe
Token: SeLoadDriverPrivilege	1444	winload.exe
Token: SeSystemProfilePrivilege	1444	winload.exe
Token: SeSystemtimePrivilege	1444	winload.exe
Token: SeProfSingleProcessPrivilege	1444	winload.exe
Token: SeIncBasePriorityPrivilege	1444	winload.exe
Token: SeCreatePagefilePrivilege	1444	winload.exe
Token: SeBackupPrivilege	1444	winload.exe
Token: SeRestorePrivilege	1444	winload.exe
Token: SeShutdownPrivilege	1444	winload.exe
Token: SeDebugPrivilege	1444	winload.exe
Token: SeSystemEnvironmentPrivilege	1444	winload.exe
Token: SeChangeNotifyPrivilege	1444	winload.exe
Token: SeRemoteShutdownPrivilege	1444	winload.exe
Token: SeUndockPrivilege	1444	winload.exe
Token: SeManageVolumePrivilege	1444	winload.exe
Token: SeImpersonatePrivilege	1444	winload.exe
Token: SeCreateGlobalPrivilege	1444	winload.exe
Token: 33	1444	winload.exe
Token: 34	1444	winload.exe
Token: 35	1444	winload.exe
Token: 36	1444	winload.exe
Token: SeIncreaseQuotaPrivilege	2568	msdcsc.exe
Token: SeSecurityPrivilege	2568	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2568	msdcsc.exe
Token: SeLoadDriverPrivilege	2568	msdcsc.exe
Token: SeSystemProfilePrivilege	2568	msdcsc.exe
Token: SeSystemtimePrivilege	2568	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2568	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2568	msdcsc.exe
Token: SeCreatePagefilePrivilege	2568	msdcsc.exe
Token: SeBackupPrivilege	2568	msdcsc.exe
Token: SeRestorePrivilege	2568	msdcsc.exe
Token: SeShutdownPrivilege	2568	msdcsc.exe
Token: SeDebugPrivilege	2568	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2568	msdcsc.exe
Token: SeChangeNotifyPrivilege	2568	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2568	msdcsc.exe
Token: SeUndockPrivilege	2568	msdcsc.exe
Token: SeManageVolumePrivilege	2568	msdcsc.exe
Token: SeImpersonatePrivilege	2568	msdcsc.exe
Token: SeCreateGlobalPrivilege	2568	msdcsc.exe
Token: 33	2568	msdcsc.exe
Token: 34	2568	msdcsc.exe
Token: 35	2568	msdcsc.exe
Token: 36	2568	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2568	msdcsc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4880 wrote to memory of 1444	4880	5855c8eb2e617be1ebbcf9d103e2cc97597e0aeaa039942e54e7032e3ae7ee46.exe	85
PID 4880 wrote to memory of 1444	4880	5855c8eb2e617be1ebbcf9d103e2cc97597e0aeaa039942e54e7032e3ae7ee46.exe	85
PID 4880 wrote to memory of 1444	4880	5855c8eb2e617be1ebbcf9d103e2cc97597e0aeaa039942e54e7032e3ae7ee46.exe	85
PID 1444 wrote to memory of 2568	1444	winload.exe	86
PID 1444 wrote to memory of 2568	1444	winload.exe	86
PID 1444 wrote to memory of 2568	1444	winload.exe	86

C:\Users\Admin\AppData\Local\Temp\5855c8eb2e617be1ebbcf9d103e2cc97597e0aeaa039942e54e7032e3ae7ee46.exe
"C:\Users\Admin\AppData\Local\Temp\5855c8eb2e617be1ebbcf9d103e2cc97597e0aeaa039942e54e7032e3ae7ee46.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4880
- C:\Users\Admin\AppData\Local\Temp\winload.exe
  winload.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1444
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2568

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

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\AppData\Local\Temp\winload.exe

Filesize
660KB

MD5
c2cbfb4a14ce8f4a53695183af7a89bd

SHA1
e69027e7a9820b956ba979c47dc4cc004e632aee

SHA256
57cbf512da83eae0c5749ae8238172ba79c7487fcad3f3161007733ac82207b0

SHA512
9c6567cc8f729312a0fe9162636175e0fd467b5cf4732ea91eba82f364085f356e257ed42e1106a3fdb2c9d4d0f35d76efdf35b99f95f1ca1aca43d8599bd7e0

Download Submit
memory/1444-20-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1444-4-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1444-5-0x00000000022C0000-0x00000000022C1000-memory.dmp

Filesize
4KB

Download
memory/2568-26-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-29-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-22-0x0000000002080000-0x0000000002081000-memory.dmp

Filesize
4KB

Download
memory/2568-23-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-24-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-25-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-37-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-27-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-28-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-21-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-30-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-31-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-32-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-33-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-34-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-35-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2568-36-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4880-6-0x0000000000400000-0x00000000004BB000-memory.dmp

Filesize
748KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads