General

  • Target

    86e6a56d03817c4369a67631d7eeca99a0a9b6b7635a1d159c9bc2263d7abad6.exe

  • Size

    34KB

  • Sample

    241120-fsyy9a1epg

  • MD5

    9de372f748c4a9dd77ddbfb325c1a31d

  • SHA1

    bef15c9f755dd25031424a63a07ec5ec8199c92e

  • SHA256

    86e6a56d03817c4369a67631d7eeca99a0a9b6b7635a1d159c9bc2263d7abad6

  • SHA512

    2b7f936be2afd76990a65c5f32bba350ce2b96b9a9c14b14190bf2fa3bced04953787eb12b7f17e600e3a9000328fdfeea851373a21e16919c874964039a83d7

  • SSDEEP

    768:ZCB/mZMXnTgjjSxKSbG6d30tjRi2T5EXbOfq1lk7kbzP:ZIxTgh29d3KRXT5cbOt7knP

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

fontdrvhost

C2

archerleet.duckdns.org:1862

Mutex

92d56566-deb6-4133-9031-d3e24abe97f9

Attributes
  • encryption_key

    0971EF27DF92928DE49B97AC507E38E80FF68C6E

  • install_name

    fontdrvhost.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    fontdrvhost

  • subdirectory

    Driver

Targets

    • Target

      86e6a56d03817c4369a67631d7eeca99a0a9b6b7635a1d159c9bc2263d7abad6.exe

    • Size

      34KB

    • MD5

      9de372f748c4a9dd77ddbfb325c1a31d

    • SHA1

      bef15c9f755dd25031424a63a07ec5ec8199c92e

    • SHA256

      86e6a56d03817c4369a67631d7eeca99a0a9b6b7635a1d159c9bc2263d7abad6

    • SHA512

      2b7f936be2afd76990a65c5f32bba350ce2b96b9a9c14b14190bf2fa3bced04953787eb12b7f17e600e3a9000328fdfeea851373a21e16919c874964039a83d7

    • SSDEEP

      768:ZCB/mZMXnTgjjSxKSbG6d30tjRi2T5EXbOfq1lk7kbzP:ZIxTgh29d3KRXT5cbOt7knP

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks