General

  • Target

    20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe

  • Size

    506KB

  • Sample

    240821-bm1tfawgpp

  • MD5

    6f801049dc7c819dc80f015947962f47

  • SHA1

    427c1556b90aa70d3d1b3314bc88325ea30f4687

  • SHA256

    20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd

  • SHA512

    d6dd99f5dcaa1717d36ab6f2ad17264416114b77750bfe90901f37bfabbd5ba2f54f43f356cf1e4db6376eb2b0a8850502ce6535f546c59799961241333bfe2e

  • SSDEEP

    6144:uloZM9rIkd8g+EtXHkv/iD4CGYhfVeGJdMFXSy3v7Igb8e1mSiZ:4oZOL+EP8CGYhfVeGJdMFXSy3vZUZ

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1275502153837838398/YsNK27WH0DB0tFxyB1u1EnPy6G9b_ATzsOE7FchNRWK3nlsLiWCT8GNYqMeNW8lbxZ0v

Targets

    • Target

      20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd.exe

    • Size

      506KB

    • MD5

      6f801049dc7c819dc80f015947962f47

    • SHA1

      427c1556b90aa70d3d1b3314bc88325ea30f4687

    • SHA256

      20a5f718e30ebf604171a2e6c7b57fdd3affb5d1b3845920c12543fc9e8337bd

    • SHA512

      d6dd99f5dcaa1717d36ab6f2ad17264416114b77750bfe90901f37bfabbd5ba2f54f43f356cf1e4db6376eb2b0a8850502ce6535f546c59799961241333bfe2e

    • SSDEEP

      6144:uloZM9rIkd8g+EtXHkv/iD4CGYhfVeGJdMFXSy3v7Igb8e1mSiZ:4oZOL+EP8CGYhfVeGJdMFXSy3vZUZ

    • 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

      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