General

  • Target

    15570cfcccc4a0a7aacd356fce6164fb

  • Size

    941KB

  • Sample

    231230-l47cnaebdj

  • MD5

    15570cfcccc4a0a7aacd356fce6164fb

  • SHA1

    f4a6a9a343c2ec88197e1b26d766d70f88e18a9f

  • SHA256

    f176013ba4695eb876b9d3898e7b7649ac073ef0be38d84fbc43de02dd6964cf

  • SHA512

    ae3390581d744e1d842d84635e11673e82210b571cb29b19248b921c8ad800d45e542c818215b3875a4e95bd2bbccc40b3fab0da7803f5b02591f501c84b71a3

  • SSDEEP

    12288:yHySSbYbxLWIBZwDMwDNMY5x0yVbHTZWwTP:y3pAbF1

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

127.0.0.1:3329

Mutex

QSR_MUTEX_huCOPCLvtEYS3VA14U

Attributes
  • encryption_key

    0Cv4PXGxuFTZEJk00S46

  • install_name

    update.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    java

Targets

    • Target

      15570cfcccc4a0a7aacd356fce6164fb

    • Size

      941KB

    • MD5

      15570cfcccc4a0a7aacd356fce6164fb

    • SHA1

      f4a6a9a343c2ec88197e1b26d766d70f88e18a9f

    • SHA256

      f176013ba4695eb876b9d3898e7b7649ac073ef0be38d84fbc43de02dd6964cf

    • SHA512

      ae3390581d744e1d842d84635e11673e82210b571cb29b19248b921c8ad800d45e542c818215b3875a4e95bd2bbccc40b3fab0da7803f5b02591f501c84b71a3

    • SSDEEP

      12288:yHySSbYbxLWIBZwDMwDNMY5x0yVbHTZWwTP:y3pAbF1

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • 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