General

  • Target

    Loli.bat

  • Size

    7.4MB

  • Sample

    250120-a1pgwstjaw

  • MD5

    e4bfe64348f8d70c36e5d7ef6f79cd3b

  • SHA1

    9595ce4b92893dc10a894bf1c87c75308aa1f826

  • SHA256

    377e07c89866212c545edcc127f8710d90fd2acbfb5a3665c6595527b516d0e4

  • SHA512

    5bd04dd26bd56cc00e84303d592ac7aa2f085a21f2e9301e805f44608d79b6154aae49865a08f0fdba95fc45bff18fa8c9fc75d7c01cde401358e25aab5801fa

  • SSDEEP

    49152:0ftkwLa4ERKZbq/giN7Uo5KRaCGyA1YKKogSj6LRobnlS0Di/zkQZHv6t0ORkVTZ:C

Malware Config

Extracted

Family

quasar

Attributes
  • encryption_key

    8D972D7B8725FD1F5B1A240FDAFF93B496B73502

  • reconnect_delay

    3000

Targets

    • Target

      Loli.bat

    • Size

      7.4MB

    • MD5

      e4bfe64348f8d70c36e5d7ef6f79cd3b

    • SHA1

      9595ce4b92893dc10a894bf1c87c75308aa1f826

    • SHA256

      377e07c89866212c545edcc127f8710d90fd2acbfb5a3665c6595527b516d0e4

    • SHA512

      5bd04dd26bd56cc00e84303d592ac7aa2f085a21f2e9301e805f44608d79b6154aae49865a08f0fdba95fc45bff18fa8c9fc75d7c01cde401358e25aab5801fa

    • SSDEEP

      49152:0ftkwLa4ERKZbq/giN7Uo5KRaCGyA1YKKogSj6LRobnlS0Di/zkQZHv6t0ORkVTZ:C

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • 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.

    • Deletes itself

    • 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 NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks