General

  • Target

    6f801049dc7c819dc80f015947962f47.bin

  • Size

    117KB

  • Sample

    240822-bqx7qa1dnb

  • MD5

    853dc1d674bff740ced2ada5a354973a

  • SHA1

    8a5a3a20cdffe8b683491378a52c22744a769f9f

  • SHA256

    68df11ba8f6db56ddf29a0ef7ea38663342375e36abb0b2924fbc974acf7b15f

  • SHA512

    8c78a8890763836f65540ef854e12cb2d719a50d2c90919084c55ab8986aa49d3d64031dd5e7c24f5e4af957dd730fe17a1634d2aee7fb607761dcba4adf23cb

  • SSDEEP

    3072:riFj/DQH36H1Kirx/zCIQjEGKwOxYv5o46QlG8pnktILVw:GV/DA8RRCAHw4o5o4X4EsILy

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.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • 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