General

  • Target

    2053b585a279e1b04c654ac45ed3ba51a2dd157a3297ce94bf4ce78e7f9c6653

  • Size

    1.4MB

  • Sample

    230801-zv677abc77

  • MD5

    e095e3f253f8559102c5ba324da5d748

  • SHA1

    ab5ff265eca4f9ac27b16edacd44893cc68e4e9a

  • SHA256

    2053b585a279e1b04c654ac45ed3ba51a2dd157a3297ce94bf4ce78e7f9c6653

  • SHA512

    bdd22c9ac871ff5126f7be1845366e13764d359527617203ae0546dfb386903ce713757c5c1cfd50dc768b7bd9c302985e9724e1813cadb72260a4e9ee8adbfb

  • SSDEEP

    24576:U2G/nvxW3Ww0tRp8GiXTBhq7yRDvHcUcjUvy0lr3Tl6icOB/UWoT:UbA30H4zF0UMSAicOB/UWk

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

-

C2

94.131.105.161:12344

Mutex

QSR_MUTEX_UEgITWnMKnRP3EZFzK

Attributes
  • encryption_key

    5Q0JQBQQfAUHRJTcAIOF

  • install_name

    lient.exe

  • log_directory

    Lugs

  • reconnect_delay

    3000

  • startup_key

    itartup

  • subdirectory

    SubDir

Targets

    • Target

      2053b585a279e1b04c654ac45ed3ba51a2dd157a3297ce94bf4ce78e7f9c6653

    • Size

      1.4MB

    • MD5

      e095e3f253f8559102c5ba324da5d748

    • SHA1

      ab5ff265eca4f9ac27b16edacd44893cc68e4e9a

    • SHA256

      2053b585a279e1b04c654ac45ed3ba51a2dd157a3297ce94bf4ce78e7f9c6653

    • SHA512

      bdd22c9ac871ff5126f7be1845366e13764d359527617203ae0546dfb386903ce713757c5c1cfd50dc768b7bd9c302985e9724e1813cadb72260a4e9ee8adbfb

    • SSDEEP

      24576:U2G/nvxW3Ww0tRp8GiXTBhq7yRDvHcUcjUvy0lr3Tl6icOB/UWoT:UbA30H4zF0UMSAicOB/UWk

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Modifies Windows Firewall

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

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

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Looks up external IP address via web service

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

MITRE ATT&CK Enterprise v15

Tasks