General

  • Target

    3361ed274fea7ddc9fac547c14a73d2cdac5952a79d18877372f90bc133ed935

  • Size

    1.4MB

  • Sample

    230802-bvdc4scb29

  • MD5

    b4a1c3d1779d06695a734eb06526c638

  • SHA1

    ed4cde7780d079efe6c3b681db92aac3ac2b6eba

  • SHA256

    3361ed274fea7ddc9fac547c14a73d2cdac5952a79d18877372f90bc133ed935

  • SHA512

    e57e04dda493ee7ef2dc38f6b13a29f6ab79013c91266dc3b5053d3b3833a23670f7cce65cd8beb160943e65c25d31ad7d665bc56bb6b6c2e19a14fe384e44a1

  • 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

      3361ed274fea7ddc9fac547c14a73d2cdac5952a79d18877372f90bc133ed935

    • Size

      1.4MB

    • MD5

      b4a1c3d1779d06695a734eb06526c638

    • SHA1

      ed4cde7780d079efe6c3b681db92aac3ac2b6eba

    • SHA256

      3361ed274fea7ddc9fac547c14a73d2cdac5952a79d18877372f90bc133ed935

    • SHA512

      e57e04dda493ee7ef2dc38f6b13a29f6ab79013c91266dc3b5053d3b3833a23670f7cce65cd8beb160943e65c25d31ad7d665bc56bb6b6c2e19a14fe384e44a1

    • 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