Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/09/2024, 02:27

General

  • Target
    cdca93bf140f21e38f2cc678ab01f9aea22d368e1e7ccb33e09f47fb01bed21c.exe
  • Size 3.1MB
  • Sample240926-cxtnjsvfmf
  • SHA256 cdca93bf140f21e38f2cc678ab01f9aea22d368e1e7ccb33e09f47fb01bed21c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Office04

C2
  • 139.180.202.227:4782

Mutex
  • 21087dd4-f975-42b4-aaed-1288cf69a83d

Attributes
  • encryption_key

    5E7B3DAD01476EEFDD0F3D1A82FA21FC75588D22

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Sigma

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cdca93bf140f21e38f2cc678ab01f9aea22d368e1e7ccb33e09f47fb01bed21c.exe
    "C:\Users\Admin\AppData\Local\Temp\cdca93bf140f21e38f2cc678ab01f9aea22d368e1e7ccb33e09f47fb01bed21c.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4040

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/4040-0-0x00007FF8D3F43000-0x00007FF8D3F45000-memory.dmp

        memory/4040-1-0x0000000000BF0000-0x0000000000F14000-memory.dmp

        memory/4040-2-0x00007FF8D3F40000-0x00007FF8D4A01000-memory.dmp

        memory/4040-4-0x000000001DF90000-0x000000001E042000-memory.dmp

        memory/4040-3-0x000000001DE80000-0x000000001DED0000-memory.dmp

        memory/4040-5-0x00007FF8D3F43000-0x00007FF8D3F45000-memory.dmp

        memory/4040-6-0x00007FF8D3F40000-0x00007FF8D4A01000-memory.dmp