General

  • Target

    b8acc6a9cda0a00e9f9decec63c9ddbdf252abd9b46a28937a0a9e9778ed4e95

  • Size

    1.4MB

  • Sample

    230801-cfwrksdf7w

  • MD5

    9132c4e013e65cc71c970bd2ff83ca44

  • SHA1

    1d5ecaf539895b0990cc67fe04a746fb9d58ecd5

  • SHA256

    b8acc6a9cda0a00e9f9decec63c9ddbdf252abd9b46a28937a0a9e9778ed4e95

  • SHA512

    bdb4bccaa473ab16c641f2db9d0c50b786102767725c3a5d21bee85e8d27dfde5cde3967763bf604112c871df8b20e37d822f74b20a92392ab36537a640a4e2b

  • 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

      b8acc6a9cda0a00e9f9decec63c9ddbdf252abd9b46a28937a0a9e9778ed4e95

    • Size

      1.4MB

    • MD5

      9132c4e013e65cc71c970bd2ff83ca44

    • SHA1

      1d5ecaf539895b0990cc67fe04a746fb9d58ecd5

    • SHA256

      b8acc6a9cda0a00e9f9decec63c9ddbdf252abd9b46a28937a0a9e9778ed4e95

    • SHA512

      bdb4bccaa473ab16c641f2db9d0c50b786102767725c3a5d21bee85e8d27dfde5cde3967763bf604112c871df8b20e37d822f74b20a92392ab36537a640a4e2b

    • 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