Overview

overview

10

Static

static

3

Boostrappersolara.exe

windows10-ltsc 2021-x64

10

Boostrappersolara.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    Boostrappersolara.exe
  • Size 1021KB
  • Sample241111-pe75fasncm
  • SHA256 1b0595d3b145f0711f4955ef0cf400fc109240dd2a4507d3c70d43e3c7f5ddf6
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
xwormdiscoveryexecutionpersistencerattrojan

Malware Config

Extracted

Family

  • xworm

Version

  • 5.0

C2

  • plant-surfaces.gl.at.ply.gg:7445

Mutex

  • oXkaMvOL23mmqd7M

Attributes
  • Install_directory

    %Temp%

  • install_file

    svchost.exe

aes.plain

Targets

    • Target
      Boostrappersolara.exe
    • Size 1021KB
    • SHA256 1b0595d3b145f0711f4955ef0cf400fc109240dd2a4507d3c70d43e3c7f5ddf6
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    xwormdiscoveryexecutionpersistencerattrojan

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

      trojanratxworm

    • Xworm family

      xworm

    • Command and Scripting Interpreter: PowerShell

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

      execution

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Adds Run key to start application

      persistence

    • Blocklisted process makes network request

    • Enumerates connected drives

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

    • Legitimate hosting services abused for malware hosting/C2

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks