General

  • Target

    Loader.exe

  • Size

    229KB

  • Sample

    240901-zqmyrasbnh

  • MD5

    8ec99595eb4b466b230b36944ec38d62

  • SHA1

    bd7127e7b3b3bafc56699168c69099ea15897ee8

  • SHA256

    f3b9b7af5c2df8fa91f485fbb06712bd3f2e75546b5da0e186172c06a1bd2d53

  • SHA512

    58136de78e9c3dcb4fd8c104b46e308df3970aa85023fb4fae429bf4ccddd6f6c28150ef13d0b2c54e7b7a4c95530dbe59f23aa03c689748c06945407dc88a2a

  • SSDEEP

    6144:FloZM+rIkd8g+EtXHkv/iD4W5vt74szHKrd4UBJZnDKZ8e1m5i:HoZtL+EP8W5vt74szHKrd4UBbkz

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1279229402600964119/_qK0_T88QUe0alCWEzUblJWwOL8yy0h4Z_ryKAxRXB7oMKpv_9n8t40vPTOBvj-BCIlT

Targets

    • Target

      Loader.exe

    • Size

      229KB

    • MD5

      8ec99595eb4b466b230b36944ec38d62

    • SHA1

      bd7127e7b3b3bafc56699168c69099ea15897ee8

    • SHA256

      f3b9b7af5c2df8fa91f485fbb06712bd3f2e75546b5da0e186172c06a1bd2d53

    • SHA512

      58136de78e9c3dcb4fd8c104b46e308df3970aa85023fb4fae429bf4ccddd6f6c28150ef13d0b2c54e7b7a4c95530dbe59f23aa03c689748c06945407dc88a2a

    • SSDEEP

      6144:FloZM+rIkd8g+EtXHkv/iD4W5vt74szHKrd4UBJZnDKZ8e1m5i:HoZtL+EP8W5vt74szHKrd4UBbkz

    • 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