General

  • Target

    NerestPCPrivate.rar

  • Size

    3.0MB

  • Sample

    250302-v52m8szps8

  • MD5

    93d9bdadb583296cf8b8bb957706b9c2

  • SHA1

    ae56cd83e3017fead64b01df5fec0c6aeaa8bd33

  • SHA256

    f02af48dd4d4bf22ee95a261e7973392965f440ae0b5602223e94050f55cb6f5

  • SHA512

    f2e5d324a0448ce02f981169a82cfa429fdfe62b2f38ebe60874d7bfeea2a62cbd12c61dd02a47c4d96d014ae71579a05c22a68daccf12267c0f93abcbb28c89

  • SSDEEP

    98304:cGzGzI7me0/ZChP6qU6OKt0lZ3Nw7dShl4:cGzyIgZChyqrtgWdShl4

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    svhost.exe

  • pastebin_url

    https://pastebin.com/raw/wkqhHUws

Targets

    • Target

      NerestPCPrivate.rar

    • Size

      3.0MB

    • MD5

      93d9bdadb583296cf8b8bb957706b9c2

    • SHA1

      ae56cd83e3017fead64b01df5fec0c6aeaa8bd33

    • SHA256

      f02af48dd4d4bf22ee95a261e7973392965f440ae0b5602223e94050f55cb6f5

    • SHA512

      f2e5d324a0448ce02f981169a82cfa429fdfe62b2f38ebe60874d7bfeea2a62cbd12c61dd02a47c4d96d014ae71579a05c22a68daccf12267c0f93abcbb28c89

    • SSDEEP

      98304:cGzGzI7me0/ZChP6qU6OKt0lZ3Nw7dShl4:cGzyIgZChyqrtgWdShl4

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Disables RegEdit via registry modification

    • Checks computer location settings

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

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks