Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/02/2023, 10:15

General

  • Target
    185.238.3.205_-_q.exe___8e0d3f72d15bb3034a088f3f42116790.exe
  • Size 288KB
  • Sample230215-man5nabd24
  • SHA256 947b7652ee3eab63fbf18856d957122fb166ecde863a6ce63d2d72f876929773
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.0.0

Botnet
  • Office04

C2
  • 185.238.3.205:5556

Mutex
  • Bd5ftiu7vEIfK0OeQc

Attributes
  • encryption_key

    MGyMN6gksTsGQSwMw42Y

  • install_name

    Client.exe

  • log_directory

    Logz

  • 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
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\185.238.3.205_-_q.exe___8e0d3f72d15bb3034a088f3f42116790.exe
    "C:\Users\Admin\AppData\Local\Temp\185.238.3.205_-_q.exe___8e0d3f72d15bb3034a088f3f42116790.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:4856

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/4856-132-0x0000000000C30000-0x0000000000C7E000-memory.dmp

        memory/4856-133-0x0000000005C70000-0x0000000006214000-memory.dmp

        memory/4856-134-0x00000000056C0000-0x0000000005752000-memory.dmp

        memory/4856-135-0x0000000005A20000-0x0000000005A86000-memory.dmp

        memory/4856-136-0x0000000006640000-0x0000000006652000-memory.dmp

        memory/4856-137-0x0000000006A70000-0x0000000006AAC000-memory.dmp

        memory/4856-138-0x0000000006DF0000-0x0000000006DFA000-memory.dmp