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General

  • Target

    VelocitySupportTool (1).exe

  • Size

    250KB

  • Sample

    250309-delewsxk14

  • MD5

    1904b43012a89c4ec5b3c82c7f7e313e

  • SHA1

    3b0eedb1ba0bff205b9d099dd355091229007d04

  • SHA256

    1446224da9810c06e7336730dab3811c39c8d1d4b200c4e7d568b1440b432f61

  • SHA512

    c37e6bba9776516201c28367dcb541ac108a1def13d72eaf311800710c854a794835b7b92075e3b5d61ff3c500e1446004479065e418e3cb0dfb41963123a06e

  • SSDEEP

    3072:0AgVT/y+i3B0ELNv4TW+gLdLY/rxlfP3JIxlR6d0HoG1Bz65/M6If+3Js+3JFkKf:MT/cCTOLoP3JClR6CIG1xBt25

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %port%

  • install_file

    USB.exe

  • pastebin_url

    https://pastebin.com/raw/k7RJ4RZQ

Extracted

Family

xworm

Version

5.0

Mutex

0PPzuWGEdxzyPz40

Attributes
  • Install_directory

    %AppData%

  • install_file

    svchost.exe

  • pastebin_url

    https://pastebin.com/raw/0AT3JnEx

aes.plain

Targets

    • Target

      VelocitySupportTool (1).exe

    • Size

      250KB

    • MD5

      1904b43012a89c4ec5b3c82c7f7e313e

    • SHA1

      3b0eedb1ba0bff205b9d099dd355091229007d04

    • SHA256

      1446224da9810c06e7336730dab3811c39c8d1d4b200c4e7d568b1440b432f61

    • SHA512

      c37e6bba9776516201c28367dcb541ac108a1def13d72eaf311800710c854a794835b7b92075e3b5d61ff3c500e1446004479065e418e3cb0dfb41963123a06e

    • SSDEEP

      3072:0AgVT/y+i3B0ELNv4TW+gLdLY/rxlfP3JIxlR6d0HoG1Bz65/M6If+3Js+3JFkKf:MT/cCTOLoP3JClR6CIG1xBt25

    • 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.

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Enterprise v15

Tasks