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Analysis

  • max time kernel
    126s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    09/07/2024, 01:34

General

  • Target

    nigger.exe

  • Size

    3.1MB

  • MD5

    4999b135603f44230d18f73c4308bffe

  • SHA1

    691754c54a1aa05a09ed28512d1b0abf6968ac15

  • SHA256

    d68f05e53c7442acc2a4f45dcada6edcc6a2ae5538ae504181176e9eed419e71

  • SHA512

    e3a5362cdea95b0a0d5bb1b5b59d9d01948228d2a4ba216281ae2854523a6c11600251dbde18123e7c017f6d7712060ab089bdcc0f0b91db65ba8cf226c6fb06

  • SSDEEP

    49152:DvXG42pda6D+/PjlLOlg6yQipVBXac5L3Ak/d8oGd2LdTHHB72eh2NT:Dv242pda6D+/PjlLOlZyQipVhaV

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

massdm

C2

192.168.1.156:4782

r-minolta.gl.at.ply.gg:63431

Mutex

7a0df206-428b-4b7b-939a-21fd6eb0a342

Attributes
  • encryption_key

    EB77EF1E2C1E9FC0CC580EBFBB1E68F8B012F37E

  • install_name

    massdm.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Update

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\nigger.exe
    "C:\Users\Admin\AppData\Local\Temp\nigger.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1756
    • C:\Windows\system32\schtasks.exe
      "schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\massdm.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:1920
    • C:\Users\Admin\AppData\Roaming\SubDir\massdm.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\massdm.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3048
      • C:\Windows\system32\schtasks.exe
        "schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\massdm.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2864

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\SubDir\massdm.exe

    Filesize

    3.1MB

    MD5

    4999b135603f44230d18f73c4308bffe

    SHA1

    691754c54a1aa05a09ed28512d1b0abf6968ac15

    SHA256

    d68f05e53c7442acc2a4f45dcada6edcc6a2ae5538ae504181176e9eed419e71

    SHA512

    e3a5362cdea95b0a0d5bb1b5b59d9d01948228d2a4ba216281ae2854523a6c11600251dbde18123e7c017f6d7712060ab089bdcc0f0b91db65ba8cf226c6fb06

  • memory/1756-0-0x000007FEF5A63000-0x000007FEF5A64000-memory.dmp

    Filesize

    4KB

  • memory/1756-1-0x0000000000270000-0x0000000000594000-memory.dmp

    Filesize

    3.1MB

  • memory/1756-2-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

    Filesize

    9.9MB

  • memory/1756-8-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

    Filesize

    9.9MB

  • memory/3048-9-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

    Filesize

    9.9MB

  • memory/3048-10-0x0000000000100000-0x0000000000424000-memory.dmp

    Filesize

    3.1MB

  • memory/3048-11-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

    Filesize

    9.9MB

  • memory/3048-12-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

    Filesize

    9.9MB