General

  • Target

    880291d677d6775c4d808db72a161db0N

  • Size

    229KB

  • Sample

    240907-zzbxvavfnr

  • MD5

    880291d677d6775c4d808db72a161db0

  • SHA1

    5455b1a4cc2efeef61a63109a34c0730a759cae4

  • SHA256

    07e766e52bb7e049cf15d5f7a5d7e5600760920a6fdf0817da956572267f6002

  • SHA512

    9bb8a742960e14ebbc50e247cc96ce3cf721e45fe19afe98e1fa8820aad8c9af96291445c778d06c6916763c54b0f5e3e05d7187cceb1a96b8ff9fba9e3c927f

  • SSDEEP

    6144:lloZM9rIkd8g+EtXHkv/iD4ruwiJX8Qf3+nJUg172b8e1mei:noZOL+EP8ruwiJX8Qf3+nJUg1uY

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1279889409478754448/WmAZRacrZJb0KdVBe7QUHg7xbzC0el3fkbHVemV4qy3cq_C566zvdmRjD6U9b_ZKtNtK

Targets

    • Target

      880291d677d6775c4d808db72a161db0N

    • Size

      229KB

    • MD5

      880291d677d6775c4d808db72a161db0

    • SHA1

      5455b1a4cc2efeef61a63109a34c0730a759cae4

    • SHA256

      07e766e52bb7e049cf15d5f7a5d7e5600760920a6fdf0817da956572267f6002

    • SHA512

      9bb8a742960e14ebbc50e247cc96ce3cf721e45fe19afe98e1fa8820aad8c9af96291445c778d06c6916763c54b0f5e3e05d7187cceb1a96b8ff9fba9e3c927f

    • SSDEEP

      6144:lloZM9rIkd8g+EtXHkv/iD4ruwiJX8Qf3+nJUg172b8e1mei:noZOL+EP8ruwiJX8Qf3+nJUg1uY

    • 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