Analysis

  • max time kernel
    121s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    09-04-2024 16:52

General

  • Target

    xRmat80DlHcR.exe

  • Size

    348KB

  • MD5

    32f3cadcabd40f0b821adba034ac8fb1

  • SHA1

    75ec24a7b088756120b9c380c6a13d88dbab5bd6

  • SHA256

    a681774e83e773eff9e6c4070a78b7fdb2839301ce1955cade51bd95af25abd3

  • SHA512

    a59aae78bf7729881925fdea3f0c2370a26f3bc3ea665df3eca1278c3599d37369aaf1e5c3bc5dcf08acb02a80ba1e1f4883b855ce934908a95d1d3d4c448c40

  • SSDEEP

    6144:TzNHXf500Mb31d61sQqboCixEkZeg5kEvfmG:Hd50vd0IixDp1vfmG

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

ppprosyl.con-ip.com:4001

Mutex

QSR_MUTEX_l1M93VuqIyiH8hEQ4I

Attributes
  • encryption_key

    ucnCWAxHFqrqDWqAvywj

  • 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\xRmat80DlHcR.exe
    "C:\Users\Admin\AppData\Local\Temp\xRmat80DlHcR.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3000

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3000-0-0x0000000000D10000-0x0000000000D6E000-memory.dmp

    Filesize

    376KB

  • memory/3000-1-0x00000000744E0000-0x0000000074BCE000-memory.dmp

    Filesize

    6.9MB

  • memory/3000-2-0x00000000009C0000-0x0000000000A00000-memory.dmp

    Filesize

    256KB

  • memory/3000-3-0x00000000744E0000-0x0000000074BCE000-memory.dmp

    Filesize

    6.9MB

  • memory/3000-4-0x00000000009C0000-0x0000000000A00000-memory.dmp

    Filesize

    256KB