General

  • Target

    45303daac5f89e133dd82a6e3daa6053_JaffaCakes118

  • Size

    658KB

  • Sample

    240515-jpja6sfh87

  • MD5

    45303daac5f89e133dd82a6e3daa6053

  • SHA1

    cf18d75d69bbc8554ccdd32a9def207b6abb3fea

  • SHA256

    ba5fad18ee46eddf4b5934ca3fe9468f3beda482c031c5c4c294d30fbc6717d3

  • SHA512

    99ff552be6edded807101365e0b59eb9993290d611e791d02bc3cfcb4d80db51da64ae9b672b5b17d8839c6f5d9c5efe3ece60da18f2b5bc3aa0109fc9a88cd3

  • SSDEEP

    12288:OKEr+MYYF0QO2EHm81/09S6I6YZXIG/ZofFWj7:rEKMYq926YGiYsj7

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

simplyrat.ddns.net:7777

Mutex

QSR_MUTEX_Icgj5r6QyqJxuPNxJ7

Attributes
  • encryption_key

    FAZB6Y2s3Cy7dzM0vpDh7SmeuqfXDwSw

  • install_name

    skinchanger.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    CS:GO Skin Changer

  • subdirectory

    windows64

Targets

    • Target

      45303daac5f89e133dd82a6e3daa6053_JaffaCakes118

    • Size

      658KB

    • MD5

      45303daac5f89e133dd82a6e3daa6053

    • SHA1

      cf18d75d69bbc8554ccdd32a9def207b6abb3fea

    • SHA256

      ba5fad18ee46eddf4b5934ca3fe9468f3beda482c031c5c4c294d30fbc6717d3

    • SHA512

      99ff552be6edded807101365e0b59eb9993290d611e791d02bc3cfcb4d80db51da64ae9b672b5b17d8839c6f5d9c5efe3ece60da18f2b5bc3aa0109fc9a88cd3

    • SSDEEP

      12288:OKEr+MYYF0QO2EHm81/09S6I6YZXIG/ZofFWj7:rEKMYq926YGiYsj7

    • 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

    • 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