darkcomet | 70fb7f4353898eb02416d7950e2a2895eab599c670faa7f84e2fa997d0a8da85

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 23:06

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
a093797edf6c04f4639d7001a7996861.exe
Size 1.2MB
Sample240223-23qxaabb84
SHA256 70fb7f4353898eb02416d7950e2a2895eab599c670faa7f84e2fa997d0a8da85
MD5 a093797edf6c04f4639d7001a7996861
SHA1 18e26ab3d87ff521756f3fcb2a9a577bea05f9ff
SHA512 e1c607e493ea35123be937ea619aa179dc7c8467b0c2c06577279c5a1858ff5f4ee3907078264bfb861540732aaa2157b2b00803634fe1cc33930be9c6ac384f
SSDEEP 24576:P4lavt0LkLL9IMixoEgeabcsI7en5aJQhJE13qIwq9MmCS:Kkwkn9IMHeabpg+hJtaPCS
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

10.10.0.100:1604

Mutex

DC_MUTEX-F54S21D

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
z8kGcvNGHx7p
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

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\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	4554.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3316742141-2240921845-2885234760-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion

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
4808	attrib.exe
4588	attrib.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	a093797edf6c04f4639d7001a7996861.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	4554.exe

Executes dropped EXE 2 IoCs

pid	Process
2408	4554.exe
3676	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-1-5-21-3316742141-2240921845-2885234760-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	4554.exe

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

System Information Discovery
T1082

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3676	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2408	4554.exe
Token: SeSecurityPrivilege	2408	4554.exe
Token: SeTakeOwnershipPrivilege	2408	4554.exe
Token: SeLoadDriverPrivilege	2408	4554.exe
Token: SeSystemProfilePrivilege	2408	4554.exe
Token: SeSystemtimePrivilege	2408	4554.exe
Token: SeProfSingleProcessPrivilege	2408	4554.exe
Token: SeIncBasePriorityPrivilege	2408	4554.exe
Token: SeCreatePagefilePrivilege	2408	4554.exe
Token: SeBackupPrivilege	2408	4554.exe
Token: SeRestorePrivilege	2408	4554.exe
Token: SeShutdownPrivilege	2408	4554.exe
Token: SeDebugPrivilege	2408	4554.exe
Token: SeSystemEnvironmentPrivilege	2408	4554.exe
Token: SeChangeNotifyPrivilege	2408	4554.exe
Token: SeRemoteShutdownPrivilege	2408	4554.exe
Token: SeUndockPrivilege	2408	4554.exe
Token: SeManageVolumePrivilege	2408	4554.exe
Token: SeImpersonatePrivilege	2408	4554.exe
Token: SeCreateGlobalPrivilege	2408	4554.exe
Token: 33	2408	4554.exe
Token: 34	2408	4554.exe
Token: 35	2408	4554.exe
Token: 36	2408	4554.exe
Token: SeIncreaseQuotaPrivilege	3676	msdcsc.exe
Token: SeSecurityPrivilege	3676	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3676	msdcsc.exe
Token: SeLoadDriverPrivilege	3676	msdcsc.exe
Token: SeSystemProfilePrivilege	3676	msdcsc.exe
Token: SeSystemtimePrivilege	3676	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3676	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3676	msdcsc.exe
Token: SeCreatePagefilePrivilege	3676	msdcsc.exe
Token: SeBackupPrivilege	3676	msdcsc.exe
Token: SeRestorePrivilege	3676	msdcsc.exe
Token: SeShutdownPrivilege	3676	msdcsc.exe
Token: SeDebugPrivilege	3676	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3676	msdcsc.exe
Token: SeChangeNotifyPrivilege	3676	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3676	msdcsc.exe
Token: SeUndockPrivilege	3676	msdcsc.exe
Token: SeManageVolumePrivilege	3676	msdcsc.exe
Token: SeImpersonatePrivilege	3676	msdcsc.exe
Token: SeCreateGlobalPrivilege	3676	msdcsc.exe
Token: 33	3676	msdcsc.exe
Token: 34	3676	msdcsc.exe
Token: 35	3676	msdcsc.exe
Token: 36	3676	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3676	msdcsc.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 216 wrote to memory of 2408	216	a093797edf6c04f4639d7001a7996861.exe	89
PID 216 wrote to memory of 2408	216	a093797edf6c04f4639d7001a7996861.exe	89
PID 216 wrote to memory of 2408	216	a093797edf6c04f4639d7001a7996861.exe	89
PID 2408 wrote to memory of 1040	2408	4554.exe	91
PID 2408 wrote to memory of 1040	2408	4554.exe	91
PID 2408 wrote to memory of 1040	2408	4554.exe	91
PID 2408 wrote to memory of 1324	2408	4554.exe	92
PID 2408 wrote to memory of 1324	2408	4554.exe	92
PID 2408 wrote to memory of 1324	2408	4554.exe	92
PID 2408 wrote to memory of 3676	2408	4554.exe	95
PID 2408 wrote to memory of 3676	2408	4554.exe	95
PID 2408 wrote to memory of 3676	2408	4554.exe	95
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 3676 wrote to memory of 4304	3676	msdcsc.exe	96
PID 1324 wrote to memory of 4808	1324	cmd.exe	98
PID 1324 wrote to memory of 4808	1324	cmd.exe	98
PID 1324 wrote to memory of 4808	1324	cmd.exe	98
PID 1040 wrote to memory of 4588	1040	cmd.exe	97
PID 1040 wrote to memory of 4588	1040	cmd.exe	97
PID 1040 wrote to memory of 4588	1040	cmd.exe	97

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4808	attrib.exe
4588	attrib.exe

C:\Users\Admin\AppData\Local\Temp\a093797edf6c04f4639d7001a7996861.exe
"C:\Users\Admin\AppData\Local\Temp\a093797edf6c04f4639d7001a7996861.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:216
- C:\Users\Admin\AppData\Local\Temp\4554\4554.exe
  "C:\Users\Admin\AppData\Local\Temp\4554\4554.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2408
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\4554\4554.exe" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1040
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\4554\4554.exe" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:4588
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\4554" +s +h
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1324
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp\4554" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:4808
- - C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
    3⤵
    - Disables RegEdit via registry modification
    - Executes dropped EXE
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3676
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      PID:4304

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

Replay Monitor

Loading Replay Monitor...

Downloads

4554.exe

Path C:\Users\Admin\AppData\Local\Temp\4554\4554.exe
Size 235KB
SHA256 17c1b43040c8476c695c34f2e0499dfb07a39dcd217e109f9a4997bfbb9a1200
MD5 d463642eb5b1354288031f6f995491e2
SHA1 ae36b91a42c3b37a1818ac2f427bdc063c219666
SHA512 5428a1fce748f3a6491aa9f413879c46c6013beae8a7f98462482f77ea24b14069213422a87e68ac40b5506ea870e34bcdfbdb01f463032892a3ee3c2ce1d2b0
SSDEEP 6144:gjlhvTTIYi4EuPC7/fczCCPxDDT8551fGN6:gjrvX16k6/YCCPhT85I6
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2408-32-0x0000000000400000-0x00000000004B7000-memory.dmp

Download

memory/2408-19-0x0000000000400000-0x00000000004B7000-memory.dmp

Download

memory/2408-20-0x0000000002290000-0x0000000002291000-memory.dmp

Download

memory/3676-41-0x0000000000400000-0x00000000004B7000-memory.dmp

Download

memory/3676-35-0x0000000002070000-0x0000000002071000-memory.dmp

Download

memory/3676-37-0x0000000000400000-0x00000000004B7000-memory.dmp

Download

memory/3676-39-0x0000000000400000-0x00000000004B7000-memory.dmp

Download

memory/3676-34-0x0000000000400000-0x00000000004B7000-memory.dmp

Download

memory/3676-43-0x0000000000400000-0x00000000004B7000-memory.dmp

Download

memory/3676-45-0x0000000000400000-0x00000000004B7000-memory.dmp

Download

memory/3676-47-0x0000000000400000-0x00000000004B7000-memory.dmp

Download

memory/3676-49-0x0000000000400000-0x00000000004B7000-memory.dmp

Download

memory/4304-36-0x00000000004D0000-0x00000000004D1000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads