Analysis

  • max time kernel
    141s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/12/2023, 10:55

General

  • Target
    d47e620d1c305da86a151ae4e615aedcb53448c66808998251b407831d8f669b.exe
  • Size 348KB
  • Sample231203-mz3pcabe89
  • SHA256 d47e620d1c305da86a151ae4e615aedcb53448c66808998251b407831d8f669b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.3.0.0

Botnet
  • Office04

C2
  • nodetecton.ddns.net:5552

Mutex
  • QSR_MUTEX_PV7LCoiUmiwD1RBPCq

Attributes
  • encryption_key

    eZUVZ8omJzgRh5woZARI

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d47e620d1c305da86a151ae4e615aedcb53448c66808998251b407831d8f669b.exe
    "C:\Users\Admin\AppData\Local\Temp\d47e620d1c305da86a151ae4e615aedcb53448c66808998251b407831d8f669b.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4668

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/4668-0-0x00000000752C0000-0x0000000075A70000-memory.dmp

        memory/4668-1-0x0000000000550000-0x00000000005AE000-memory.dmp

        memory/4668-2-0x00000000054A0000-0x0000000005A44000-memory.dmp

        memory/4668-3-0x0000000004FC0000-0x0000000005052000-memory.dmp

        memory/4668-4-0x00000000050F0000-0x0000000005100000-memory.dmp

        memory/4668-5-0x0000000005060000-0x00000000050C6000-memory.dmp

        memory/4668-6-0x0000000005FD0000-0x0000000005FE2000-memory.dmp

        memory/4668-7-0x0000000006410000-0x000000000644C000-memory.dmp

        memory/4668-8-0x00000000752C0000-0x0000000075A70000-memory.dmp

        memory/4668-9-0x00000000050F0000-0x0000000005100000-memory.dmp

        memory/4668-10-0x00000000065C0000-0x00000000065CA000-memory.dmp