General

  • Target
    79a78806aca59b8b86ea96a47bf8c77e169e257ab766d31a66ea53df742e4d9a.zip
  • Size 39KB
  • Sample260408-e86tcsg15k
  • SHA256 79a78806aca59b8b86ea96a47bf8c77e169e257ab766d31a66ea53df742e4d9a
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • 31.56.209.80:1996

Mutex
  • XN6Uheo6JsWCQOrh

Attributes
  • Install_directory

    %AppData%

  • install_file

    bin.exe

aes.plain

Targets

    • Target
      Payment_Advice_0977_08_04_26.pdf.vbs
    • Size 2.5MB
    • SHA256 2941d37b59ab71e459e58326d76b2f3855081aae576d2f7d01102f83a2616553
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detect Xworm Payload

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Command and Scripting Interpreter: PowerShell

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

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • System Binary Proxy Execution: Regsvcs/Regasm

      Abuse Regasm to proxy execution of malicious code.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks