Analysis

  • max time kernel
    43s
  • max time network
    43s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-05-2024 13:10

General

  • Target

    Rat.exe

  • Size

    3.1MB

  • MD5

    9fb2e5556886a91ed7805b9d835defd2

  • SHA1

    4b54c11066f327c76f09b8de64715fee3f02fd34

  • SHA256

    28174e01123c6a52e6d47655dfa108384a81d0cccdbd94843689ba08be928453

  • SHA512

    e9dd5e7b7c0ff5406ca23c17bf6451c717391b0f8fc5ff54809ed552b41a1e7d71bbd6128cbf570976b2a48299cc72625d6d485960256009df33a6d80810ba54

  • SSDEEP

    49152:OvIt62XlaSFNWPjljiFa2RoUYInIxNESE8k/iRLoGdRTHHB72eh2NT:OvE62XlaSFNWPjljiFXRoUYIIxDh

Score
10/10

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

1

C2

192.168.178.159:4782

Mutex

f9476288-ca6f-4357-825f-b24fff8428a1

Attributes
  • encryption_key

    5B16BA8922577B4F360F28D3FADAD0E8E87825EE

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    x64

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Creates scheduled task(s) 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 WriteProcessMemory 6 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\Rat.exe
    "C:\Users\Admin\AppData\Local\Temp\Rat.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "x64" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:1560
    • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5096
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "x64" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:4332

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    3.1MB

    MD5

    9fb2e5556886a91ed7805b9d835defd2

    SHA1

    4b54c11066f327c76f09b8de64715fee3f02fd34

    SHA256

    28174e01123c6a52e6d47655dfa108384a81d0cccdbd94843689ba08be928453

    SHA512

    e9dd5e7b7c0ff5406ca23c17bf6451c717391b0f8fc5ff54809ed552b41a1e7d71bbd6128cbf570976b2a48299cc72625d6d485960256009df33a6d80810ba54

  • memory/1668-0-0x00007FFE83653000-0x00007FFE83655000-memory.dmp

    Filesize

    8KB

  • memory/1668-1-0x0000000000970000-0x0000000000C94000-memory.dmp

    Filesize

    3.1MB

  • memory/1668-2-0x00007FFE83650000-0x00007FFE84111000-memory.dmp

    Filesize

    10.8MB

  • memory/1668-9-0x00007FFE83650000-0x00007FFE84111000-memory.dmp

    Filesize

    10.8MB

  • memory/5096-10-0x00007FFE83650000-0x00007FFE84111000-memory.dmp

    Filesize

    10.8MB

  • memory/5096-11-0x00007FFE83650000-0x00007FFE84111000-memory.dmp

    Filesize

    10.8MB

  • memory/5096-12-0x000000001BC20000-0x000000001BC70000-memory.dmp

    Filesize

    320KB

  • memory/5096-13-0x000000001BD30000-0x000000001BDE2000-memory.dmp

    Filesize

    712KB

  • memory/5096-14-0x00007FFE83650000-0x00007FFE84111000-memory.dmp

    Filesize

    10.8MB