General

  • Target

    de0a3b0a826cd8c084a8ba0d073f75fb94a38ffd6c9794735f8cd9f0325092b2

  • Size

    1.4MB

  • Sample

    230801-d37b9seb6x

  • MD5

    37cb3a798ac379323490bb7dc42202ea

  • SHA1

    7aabccab5b0dca3d9c16517c8104c6dfb7d05550

  • SHA256

    de0a3b0a826cd8c084a8ba0d073f75fb94a38ffd6c9794735f8cd9f0325092b2

  • SHA512

    b56f4642ecc9710e10820be1652cbaaf0f908b16d088d20094d2f4778ea9c42703919443dfb170e01a1d89928c4565524aab3da72ed2c47f800686216f6f52c5

  • 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

      de0a3b0a826cd8c084a8ba0d073f75fb94a38ffd6c9794735f8cd9f0325092b2

    • Size

      1.4MB

    • MD5

      37cb3a798ac379323490bb7dc42202ea

    • SHA1

      7aabccab5b0dca3d9c16517c8104c6dfb7d05550

    • SHA256

      de0a3b0a826cd8c084a8ba0d073f75fb94a38ffd6c9794735f8cd9f0325092b2

    • SHA512

      b56f4642ecc9710e10820be1652cbaaf0f908b16d088d20094d2f4778ea9c42703919443dfb170e01a1d89928c4565524aab3da72ed2c47f800686216f6f52c5

    • 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