General

  • Target

    6cf6ade8237b2c7d401b8aea07fedfa070f2d7fd7e34bde673632fe9250fa9a5N.exe

  • Size

    3.3MB

  • Sample

    241130-1wltbawqdx

  • MD5

    94fafb9c5bad9356529fb599f4bf4260

  • SHA1

    7bbcc6309c587db43d8fef972eefc4bf27c98de1

  • SHA256

    6cf6ade8237b2c7d401b8aea07fedfa070f2d7fd7e34bde673632fe9250fa9a5

  • SHA512

    55f7e92bc321e6dbf14594a273fcc5c9046f8e2ae13196fd9caed55acd0fc3be601c0e3eaa4f58e765e28e5cdccb7fa442e8f6c113779eb6cd7bbed67646f65d

  • SSDEEP

    49152:Jv+lL26AaNeWgPhlmVqvMQ7XSKEp+oMfHzoGdNCTHHB72eh2NTsr:JvuL26AaNeWgPhlmVqkQ7XSKEp+nE

Malware Config

Extracted

Family

quasar

Attributes
  • reconnect_delay

    3000

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

zd5sq5d05s2ds-51922.portmap.host:51922

Mutex

28d11f6e-245f-478b-b5b1-72d29c906aa7

Attributes
  • encryption_key

    4EE40AC5CC3266A3AC1ABAC110B7261E7A052A63

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      6cf6ade8237b2c7d401b8aea07fedfa070f2d7fd7e34bde673632fe9250fa9a5N.exe

    • Size

      3.3MB

    • MD5

      94fafb9c5bad9356529fb599f4bf4260

    • SHA1

      7bbcc6309c587db43d8fef972eefc4bf27c98de1

    • SHA256

      6cf6ade8237b2c7d401b8aea07fedfa070f2d7fd7e34bde673632fe9250fa9a5

    • SHA512

      55f7e92bc321e6dbf14594a273fcc5c9046f8e2ae13196fd9caed55acd0fc3be601c0e3eaa4f58e765e28e5cdccb7fa442e8f6c113779eb6cd7bbed67646f65d

    • SSDEEP

      49152:Jv+lL26AaNeWgPhlmVqvMQ7XSKEp+oMfHzoGdNCTHHB72eh2NTsr:JvuL26AaNeWgPhlmVqkQ7XSKEp+nE

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks