General

  • Target

    5.exe

  • Size

    490KB

  • Sample

    250303-wh1yvsvjy8

  • MD5

    286b980a155209c4ef664687913b8113

  • SHA1

    ae96bfe4b71d52ab46994c496d0c07ed2f28c5f3

  • SHA256

    59b912dd8b99eb28efe1f30d84082baa5d2e09188c5f97ef1e19a043b245228c

  • SHA512

    cae27348d906b5d4d7266492aae148e25d66124890d63fe03bafca86c83dbd362bc26a36d357fb07f4dbffa765e25c85aff9589c582812b43c106d05845bf611

  • SSDEEP

    12288:Ozj3DTkV1ilKya0FOUuQ0gH+kmtbF6W05EJXp107sd:QkGTy

Malware Config

Extracted

Family

xworm

Version

3.1

C2

again-stuff.gl.at.ply.gg:35361

Mutex

w1O93T06AbTXm6Hz

Attributes
  • install_file

    USB.exe

aes.plain

Targets

    • Target

      5.exe

    • Size

      490KB

    • MD5

      286b980a155209c4ef664687913b8113

    • SHA1

      ae96bfe4b71d52ab46994c496d0c07ed2f28c5f3

    • SHA256

      59b912dd8b99eb28efe1f30d84082baa5d2e09188c5f97ef1e19a043b245228c

    • SHA512

      cae27348d906b5d4d7266492aae148e25d66124890d63fe03bafca86c83dbd362bc26a36d357fb07f4dbffa765e25c85aff9589c582812b43c106d05845bf611

    • SSDEEP

      12288:Ozj3DTkV1ilKya0FOUuQ0gH+kmtbF6W05EJXp107sd:QkGTy

    • Detect Xworm Payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Sets service image path in registry

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

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

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • 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