General

  • Target
    2024-05-02_f7ebfd5e206742254f9a8d8f0cd1d992_magniber
  • Size 36.9MB
  • Sample240502-bqqsmsfa87
  • SHA256 a655972465abe6c421e649aee9cfc22154c56e49806d9922384b9219dfd1175c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.0

Botnet
  • MozillaUpgrade

C2
  • 87.121.52.241:4000

Mutex
  • 565c0b54-8fec-4eb0-a932-429f55a0cc82

Attributes
  • encryption_key

    B000736BEBDF08FC1B6696200651882CF57E43E7

  • install_name

    Mozilla.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Mozilla update

  • subdirectory

    SubDir

Extracted

Family
  • asyncrat

Version
  • 0.5.7B

Botnet
  • Default

C2
  • 87.121.52.241:2000

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    chromeUpdate.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target
      2024-05-02_f7ebfd5e206742254f9a8d8f0cd1d992_magniber
    • Size 36.9MB
    • SHA256 a655972465abe6c421e649aee9cfc22154c56e49806d9922384b9219dfd1175c
    • MD5 SHA1 SHA512 SSDEEP
    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Async RAT payload

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects executables containing common artifacts observed in infostealers

    • Detects file containing reversed ASEP Autorun registry keys

    • UPX dump on OEP (original entry point)

    • XMRig Miner payload

    • Blocklisted process makes network request

    • Creates new service(s)

    • Downloads MZ/PE file

    • Stops running service(s)

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks