General

  • Target

    55e16b1f5723e21feb01689f3b4331ec38e45ebdf697228b48974d430232056a

  • Size

    1.4MB

  • Sample

    230803-b6ds1saf79

  • MD5

    7c07f18b49242ab1180a6b42b564b0ee

  • SHA1

    c9a991c259ce785eafc95055b002022856675f0a

  • SHA256

    55e16b1f5723e21feb01689f3b4331ec38e45ebdf697228b48974d430232056a

  • SHA512

    c703a99bf0f4941ca2178694d68aecc2fd6db7005ebc3108b7db9d828355841f7e6dce7fe5de487486b5a31a869c74710cf71f765537a4a13f355125f393b48e

  • 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

      55e16b1f5723e21feb01689f3b4331ec38e45ebdf697228b48974d430232056a

    • Size

      1.4MB

    • MD5

      7c07f18b49242ab1180a6b42b564b0ee

    • SHA1

      c9a991c259ce785eafc95055b002022856675f0a

    • SHA256

      55e16b1f5723e21feb01689f3b4331ec38e45ebdf697228b48974d430232056a

    • SHA512

      c703a99bf0f4941ca2178694d68aecc2fd6db7005ebc3108b7db9d828355841f7e6dce7fe5de487486b5a31a869c74710cf71f765537a4a13f355125f393b48e

    • 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