Overview

overview

10

Static

static

85BA700122...E7.exe

windows7_x64

10

85BA700122...E7.exe

windows10_x64

10

Sharing

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General

  • Target
    85BA700122E35A9457BC1D0FA4AE49123C99EFE4906E7.exe
  • Size 3.1MB
  • Sample210908-rlpyjshggl
  • SHA256 85ba700122e35a9457bc1d0fa4ae49123c99efe4906e764b26f83e6f15ff3dcf
  • MD5 SHA1 SHA512
Score
10/10
asyncratquasarbrave21discoveryratspywaresuricatatrojan

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.7B

C2

  • pettbull.ddns.net:6606

  • pettbull.ddns.net:7707

  • pettbull.ddns.net:8808

Mutex

  • AsyncMutex_6SI8OkPnk

Attributes
  • aes_key

    J6p28HnC9XL8Dc6PzngnyEckA902Q1Ck

  • anti_detection

    false

  • autorun

    true

  • bdos

    false

  • delay

    BRAVE21

  • host

    pettbull.ddns.net

  • hwid

    3

  • install_file

  • install_folder

    %AppData%

  • mutex

    AsyncMutex_6SI8OkPnk

  • pastebin_config

    null

  • port

    6606,7707,8808

  • version

    0.5.7B

aes.plain

Extracted

Family

  • quasar

Version

  • 1.4.0

Botnet

  • BRAVE21

C2

  • pettbull.ddns.net:4782

Mutex

  • 06538f38-9c19-4cdf-83c8-8fafb759e15a

Attributes
  • encryption_key

    DAE9E02E5E04D59D9AF2AA1D5E82248D5919AC6A

  • install_name

    Windows Update.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Microsoft Windows

  • subdirectory

    System32

Extracted

Family

  • quasar

Mutex

Attributes
  • encryption_key

  • install_name

  • log_directory

  • reconnect_delay

    3000

  • startup_key

  • subdirectory

Targets

    • Target
      85BA700122E35A9457BC1D0FA4AE49123C99EFE4906E7.exe
    • Size 3.1MB
    • SHA256 85ba700122e35a9457bc1d0fa4ae49123c99efe4906e764b26f83e6f15ff3dcf
    • MD5 SHA1 SHA512
    Score
    10/10
    asyncratquasarbrave21discoveryratspywaresuricatatrojan

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers.

      ratasyncrat

    • Quasar Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • suricata: ET MALWARE Observed Malicious SSL Cert (Quasar CnC)

      suricata: ET MALWARE Observed Malicious SSL Cert (Quasar CnC)

      suricata

    • Async RAT payload

      rat

    • Executes dropped EXE

    • Drops startup file

    • Loads dropped DLL

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks