General

  • Target

    6616aa94e7d94deb84074bfc37d380ac30d33d85cca001be7b43556ad40dbd98

  • Size

    1.4MB

  • Sample

    230801-chf4xace59

  • MD5

    62b3088e28e2d71fe1dfab7aadaf084d

  • SHA1

    885645c56f17a7b85d26cad5cb2726655873b9c2

  • SHA256

    6616aa94e7d94deb84074bfc37d380ac30d33d85cca001be7b43556ad40dbd98

  • SHA512

    a7c67092a8ca0d0c34dd57073f6f3474acb191ed2040193971cd4ce9a889c75c82ddd74855db8ab37badaf54fdd49f416d3b2dba4cf0a436c482d87d1f683236

  • 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

      6616aa94e7d94deb84074bfc37d380ac30d33d85cca001be7b43556ad40dbd98

    • Size

      1.4MB

    • MD5

      62b3088e28e2d71fe1dfab7aadaf084d

    • SHA1

      885645c56f17a7b85d26cad5cb2726655873b9c2

    • SHA256

      6616aa94e7d94deb84074bfc37d380ac30d33d85cca001be7b43556ad40dbd98

    • SHA512

      a7c67092a8ca0d0c34dd57073f6f3474acb191ed2040193971cd4ce9a889c75c82ddd74855db8ab37badaf54fdd49f416d3b2dba4cf0a436c482d87d1f683236

    • 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