General

  • Target

    RuntimeBroker.bat

  • Size

    95KB

  • Sample

    240531-z6lqmadf91

  • MD5

    9174f5a3530ff5f966d35b38cb69e3c4

  • SHA1

    228c9fcf922074c56aab5798e5f03bcbc6d6cb05

  • SHA256

    0b98d1633f196fd8de2c57840d8c610c80e7513713f59416c65b618a577d3a29

  • SHA512

    cc2bcceeee6daec0d414060841dddfbafe0be1fb81c88e8374af7303d1f41791f06fa0d4e3834563b90f5fe96f0ba936b99fd4ca4ce65d049352ed4116816b5f

  • SSDEEP

    1536:DnbK+6KWfEqYYlQIWLCBYZeDMK3h+ltXRAU/IV8st+Nj9UMwA0ysfu44:zj6NW3ZXKR+CSmoj3wAofY

Malware Config

Extracted

Family

xworm

C2

bbcslimer-34082.portmap.io:34082

Attributes
  • install_file

    USB.exe

Targets

    • Target

      RuntimeBroker.bat

    • Size

      95KB

    • MD5

      9174f5a3530ff5f966d35b38cb69e3c4

    • SHA1

      228c9fcf922074c56aab5798e5f03bcbc6d6cb05

    • SHA256

      0b98d1633f196fd8de2c57840d8c610c80e7513713f59416c65b618a577d3a29

    • SHA512

      cc2bcceeee6daec0d414060841dddfbafe0be1fb81c88e8374af7303d1f41791f06fa0d4e3834563b90f5fe96f0ba936b99fd4ca4ce65d049352ed4116816b5f

    • SSDEEP

      1536:DnbK+6KWfEqYYlQIWLCBYZeDMK3h+ltXRAU/IV8st+Nj9UMwA0ysfu44:zj6NW3ZXKR+CSmoj3wAofY

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Blocklisted process makes network request

    • 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.

    • Checks computer location settings

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

    • 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