Resubmissions

15-02-2025 09:46

250215-lrx88aykgs 10

15-02-2025 09:22

250215-lbw18ayjez 9

15-02-2025 08:52

250215-ks5h9axrfw 8

14-02-2025 21:35

250214-1fby6szlcv 10

14-02-2025 21:05

250214-zxb5tsypcv 10

14-02-2025 20:43

250214-zhxszsymbt 10

14-02-2025 20:06

250214-yvv99ayjcw 10

14-02-2025 19:38

250214-ycws3axmcm 10

14-02-2025 19:09

250214-xt5lvsxmfv 8

General

  • Target

    test.txt

  • Size

    18B

  • Sample

    250214-yvv99ayjcw

  • MD5

    5b3f97d48c8751bd031b7ea53545bdb6

  • SHA1

    88be3374c62f23406ec83bb11279f8423bd3f88d

  • SHA256

    d8fce9dd9c65ca143343f7711859a7cffc3c5e656a8b84108183fb769a12ed8b

  • SHA512

    ed2de1eec50310ced4bde8ef6ae4b7902920b007df7b6aeb200cfe9fcc0d36ef05af7526c4675be2feac52831668798d5fe3523175efad6f6549b30f30a0b5d6

Malware Config

Extracted

Family

xworm

C2

external-scholars.gl.at.ply.gg:4242

external-scholars.gl.at.ply.gg:4242:4242

external-scholars.gl.at.ply.gg:443

external-scholars.gl.at.ply.gg:4242:443

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Targets

    • Target

      test.txt

    • Size

      18B

    • MD5

      5b3f97d48c8751bd031b7ea53545bdb6

    • SHA1

      88be3374c62f23406ec83bb11279f8423bd3f88d

    • SHA256

      d8fce9dd9c65ca143343f7711859a7cffc3c5e656a8b84108183fb769a12ed8b

    • SHA512

      ed2de1eec50310ced4bde8ef6ae4b7902920b007df7b6aeb200cfe9fcc0d36ef05af7526c4675be2feac52831668798d5fe3523175efad6f6549b30f30a0b5d6

    • Detect Xworm Payload

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Stormkitty family

    • 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.

    • Downloads MZ/PE file

    • A potential corporate email address has been identified in the URL: [email protected]

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Uses the VBS compiler for execution

    • Adds Run key to start application

    • 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

    • Looks up external IP address via web service

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

    • Detected potential entity reuse from brand MICROSOFT.

MITRE ATT&CK Enterprise v15

Tasks