General

  • Target

    bf7060399edb1fdaa34ade7888c1e686.bin

  • Size

    1.1MB

  • Sample

    230819-cjr8kaha9z

  • MD5

    49b9a64c3b3cc87205960b56f5ecf6b9

  • SHA1

    5b9507942adcc654cd14eaace6baa3453594ea9b

  • SHA256

    6a8503c3d4686b5fbcc2459f2a176c485825fbdb80a2666fa722be425e5cb58c

  • SHA512

    30465681dbd7011ac162c671f0333f16136216e9968b07b6dbec99f02da9099d7abb0ca311c30bfe5041cd4a90fc974fc14e4ed93a7c43ca1d491f2e0c40035c

  • SSDEEP

    24576:N49I5P397bn5vLXxgt4le7VybWJEDXlCUfjU/lC/B/Ksyue+FSWGxNelRxby:N4S5P3VpOt4wEDVFM4/BZtF071

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

      2487094834dfcab7a6c088a1b19188ac66390eb688eb1f8ae290c9cc93b533e6.exe

    • Size

      1.4MB

    • MD5

      bf7060399edb1fdaa34ade7888c1e686

    • SHA1

      b4127129516d2d3b32db97bdbb667dffaec1c9bc

    • SHA256

      2487094834dfcab7a6c088a1b19188ac66390eb688eb1f8ae290c9cc93b533e6

    • SHA512

      b0a02e9bf30e47ad61cbb2cc4eb73423fc3293387cdac29bcefff8abf5041e2501384917da813b541d70ff035b05ff792c05eef980f5397add95e8b435080da5

    • SSDEEP

      24576:U2G/nvxW3Ww0tRp8GiXTBhq7yRDvHcUcjUvy0lr3Tl6icOB/UWoT:UbA30H4zF0UMSAicOB/UWk

    • Modifies WinLogon for persistence

    • 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.

    • Adds Run key to start application

    • 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