General

  • Target

    xdark.exe

  • Size

    229KB

  • Sample

    240727-tepejswhql

  • MD5

    4d3247cc8c41f20789fee08c48359cde

  • SHA1

    409a5ccfec9dcc173d79c2f760a389439d024afc

  • SHA256

    8ae1dd94ce9613b67ea8eb9e4ea1868824b8714bb1b184debd03048f668823dd

  • SHA512

    65f6cf419a656840825923944cf737accc9f5591266694c94c1ac9477fef4f79a60e967ece7c878b853b63c99ce7662ce808ad58ea49a25b00b8b3cda9f8b22f

  • SSDEEP

    6144:tloZM+rIkd8g+EtXHkv/iD4AO+VQ6YXzQKXap8aLLyuQb8e1mni:voZtL+EP8A3VQ6YXzQFp8aLLyXN

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1254779924942815344/paQTAR6d7STvJNov66hJHd4xaJNTOXwswjCKb6Cs71b56_nmOpo2YNIVcTlWo9Dqozh2

Targets

    • Target

      xdark.exe

    • Size

      229KB

    • MD5

      4d3247cc8c41f20789fee08c48359cde

    • SHA1

      409a5ccfec9dcc173d79c2f760a389439d024afc

    • SHA256

      8ae1dd94ce9613b67ea8eb9e4ea1868824b8714bb1b184debd03048f668823dd

    • SHA512

      65f6cf419a656840825923944cf737accc9f5591266694c94c1ac9477fef4f79a60e967ece7c878b853b63c99ce7662ce808ad58ea49a25b00b8b3cda9f8b22f

    • SSDEEP

      6144:tloZM+rIkd8g+EtXHkv/iD4AO+VQ6YXzQKXap8aLLyuQb8e1mni:voZtL+EP8A3VQ6YXzQFp8aLLyXN

    • Detect Umbral payload

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Command and Scripting Interpreter: PowerShell

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

    • Drops file in Drivers directory

    • Deletes itself

    • Reads user/profile data of web browsers

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

    • 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