General

  • Target

    hi.bat

  • Size

    7.2MB

  • Sample

    250103-1tt2xavqfx

  • MD5

    2c3d8aae15c19f224cb8258dc002fb53

  • SHA1

    5797ad1149d6be6cbbb76df18abfa32e28cbc6a0

  • SHA256

    c96f6d22a11588fb645f45821a151ee6cce413cfc3b80a62f3717cc2ba809247

  • SHA512

    65e76fffd292b0cc442af65082fd5c7e2685c6bc9cbaa0597972598063e07a5ec2b8cf581d6d479e8266cecd984b7209b94f73b295b8f0fd661292583c19e9a7

  • SSDEEP

    49152:i2z4mBDgbmKEf2tj2UFBW14Hkp18YJAUv0ZA8fv3CzY1V6uSonph0DQMq6xKjKvX:d

Malware Config

Extracted

Family

quasar

Attributes
  • encryption_key

    853F98C0E8F31E6FF0C780CC65F601689B6EF3FD

  • reconnect_delay

    3000

Targets

    • Target

      hi.bat

    • Size

      7.2MB

    • MD5

      2c3d8aae15c19f224cb8258dc002fb53

    • SHA1

      5797ad1149d6be6cbbb76df18abfa32e28cbc6a0

    • SHA256

      c96f6d22a11588fb645f45821a151ee6cce413cfc3b80a62f3717cc2ba809247

    • SHA512

      65e76fffd292b0cc442af65082fd5c7e2685c6bc9cbaa0597972598063e07a5ec2b8cf581d6d479e8266cecd984b7209b94f73b295b8f0fd661292583c19e9a7

    • SSDEEP

      49152:i2z4mBDgbmKEf2tj2UFBW14Hkp18YJAUv0ZA8fv3CzY1V6uSonph0DQMq6xKjKvX:d

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Sets service image path in registry

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

      Clear Windows Event Logs to hide the activity of an intrusion.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks