Overview

overview

10

Static

static

3

9c75a48f5d...18.exe

windows7-x64

10

9c75a48f5d...18.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2024 15:48

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    9c75a48f5d740cc3efc84d89a83ee050_JaffaCakes118.exe

  • Size

    710KB

  • MD5

    9c75a48f5d740cc3efc84d89a83ee050

  • SHA1

    c589c7813398d1286292087a7525b4e441d78216

  • SHA256

    105988fa4ea105ef4d25131faa63c56df3b6b9294a5e7c2e09ea5d6990b99fe9

  • SHA512

    974c5b6232a0ced575f856c0f9ec76e4a6e663f57509a1b2130f942d84b61f1bdb96ef49544bdfbddc08f6e6e765f1d51ef96f79d93d4e9609dd606f03885851

  • SSDEEP

    12288:a7KQsRFS7dBOgfKxJAoxRYUUFAc0RUzVBAvRj3chpn6mDwhT6NFqKY9JXt9bZ88r:dQs6rFS3lxZCiyzDdp6mDwhT6NFqKi9V

Score
10/10
darkcometguest16discoveryevasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-94D01B6

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    72xJLArihnk5

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

    trojanratdarkcomet
  • Darkcomet family
    darkcomet
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Modifies firewall policy service 3 TTPs 3 IoCs
    evasion
  • Modifies security service 2 TTPs 1 IoCs
    evasion
  • Windows security bypass 2 TTPs 2 IoCs
    evasiontrojan
  • Disables RegEdit via registry modification 1 IoCs
    evasion
  • 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
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
    evasiontrojan
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 49 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs
  • System policy modification 1 TTPs 3 IoCs
    evasion
  • Views/modifies file attributes 1 TTPs 2 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\9c75a48f5d740cc3efc84d89a83ee050_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\9c75a48f5d740cc3efc84d89a83ee050_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1124
    • C:\Users\Admin\AppData\Roaming\winlogon.exe
      "C:\Users\Admin\AppData\Roaming\winlogon.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
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4568
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming\winlogon.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3412
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Roaming\winlogon.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:1388
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4860
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Roaming" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:3352
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Windows security modification
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        • System policy modification
        PID:2680
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Defense Evasion

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Impair Defenses

3
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

2
T1562.001

Modify Registry

7
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\winlogon.exe
    Filesize

    658KB

    MD5

    627a11881db5e356e49354c516f6e080

    SHA1

    e9269932bdb70ce264eb9d379b72b89e7ca24c64

    SHA256

    66a7032097151ed2cc862b2f971f5f2dc60f12f8ce18beb319511b5e8ab4dd58

    SHA512

    148f407368b7ad10f57e63af6b16368abb490e4da1636040319eb275aa42efaed084a5a96a4be08a9b737be6d70ef4d2dc27d74c47a01b984914f41c8e844884

    Download Submit

  • memory/1124-0-0x00007FFBF6CA3000-0x00007FFBF6CA5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1124-1-0x00000000009E0000-0x0000000000A98000-memory.dmp

    Filesize

    736KB

    Download

  • memory/1124-2-0x00007FFBF6CA0000-0x00007FFBF7761000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/1124-3-0x0000000002BD0000-0x0000000002C82000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1124-78-0x00007FFBF6CA3000-0x00007FFBF6CA5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1124-79-0x00007FFBF6CA0000-0x00007FFBF7761000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/2680-80-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download

  • memory/2820-76-0x00000000002A0000-0x00000000002A1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4568-15-0x0000000002140000-0x0000000002141000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4568-77-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

    Download