General

  • Target

    Loadder.exe

  • Size

    98KB

  • Sample

    240514-sz9qjsda98

  • MD5

    7ed8bf17132c1003da9e1fc473b1d0f7

  • SHA1

    e3d1754dbca2398977d0d1fb2b331168025da86c

  • SHA256

    e1c064d2472fffaff3b9566f473d5b43310d2643d0d98f364f81c6610e2ed0b5

  • SHA512

    cdaed8d1f7ddaa3a21c6a42ccca3b2881e562cfeffcd4bcc6f05b48581b138bf579bcdc38b0a71694a34cdc792686f7c8f3f51c7c5e6aca1370ae5ba034dacf9

  • SSDEEP

    1536:T7fbN3eEDhDPA/pICdUkbBtW7upvaLU0bI5taxKo0IOlnToIf9weLHlD/gap4KO8:P7DhdC6kzWypvaQ0FxyNTBf9xx/4W

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %AppData%

  • install_file

    wlms.exe

  • pastebin_url

    https://pastebin.com/raw/Xuc6dzua

Targets

    • Target

      Loadder.exe

    • Size

      98KB

    • MD5

      7ed8bf17132c1003da9e1fc473b1d0f7

    • SHA1

      e3d1754dbca2398977d0d1fb2b331168025da86c

    • SHA256

      e1c064d2472fffaff3b9566f473d5b43310d2643d0d98f364f81c6610e2ed0b5

    • SHA512

      cdaed8d1f7ddaa3a21c6a42ccca3b2881e562cfeffcd4bcc6f05b48581b138bf579bcdc38b0a71694a34cdc792686f7c8f3f51c7c5e6aca1370ae5ba034dacf9

    • SSDEEP

      1536:T7fbN3eEDhDPA/pICdUkbBtW7upvaLU0bI5taxKo0IOlnToIf9weLHlD/gap4KO8:P7DhdC6kzWypvaQ0FxyNTBf9xx/4W

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • AgentTesla payload

    • 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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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