General

  • Target

    440b8276b90764abae9ad81107dce44feec2635f0827950114e8973090fa6380

  • Size

    1.4MB

  • Sample

    230801-cj3z3adf9w

  • MD5

    5aba3905269ba0cf82601d62924bbb17

  • SHA1

    b46fc74f34a2851ee69b26ad11bf33cf345ca84b

  • SHA256

    440b8276b90764abae9ad81107dce44feec2635f0827950114e8973090fa6380

  • SHA512

    d944dd7626ff10aba4c3cd4acf7555d547a5a77cf0ba21943d9c6aa5d15ce1919a2886b9be1377561e79efceae77c1f1885a433d995db5de33ce6be62ac43829

  • 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

      440b8276b90764abae9ad81107dce44feec2635f0827950114e8973090fa6380

    • Size

      1.4MB

    • MD5

      5aba3905269ba0cf82601d62924bbb17

    • SHA1

      b46fc74f34a2851ee69b26ad11bf33cf345ca84b

    • SHA256

      440b8276b90764abae9ad81107dce44feec2635f0827950114e8973090fa6380

    • SHA512

      d944dd7626ff10aba4c3cd4acf7555d547a5a77cf0ba21943d9c6aa5d15ce1919a2886b9be1377561e79efceae77c1f1885a433d995db5de33ce6be62ac43829

    • 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.

    • 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