General

  • Target

    7bc86d2e18813d4d06d2d39894762b90N.exe

  • Size

    229KB

  • Sample

    240816-p5krtszbrm

  • MD5

    7bc86d2e18813d4d06d2d39894762b90

  • SHA1

    6203740dc4dde0290d4827f479f6d08a91a7c699

  • SHA256

    70575d18c218295c13e10e6d50b48af76d00f4dd46ed0d5010aaf212b0ea61af

  • SHA512

    1918500c3bed431277318d03db3a4d39c0f3a81dcc782aa60d4108e6836593d20aa22d79884e2bb54fd9bc7a63a0dcad8536156437e69f0c020b5e1ad552d685

  • SSDEEP

    6144:9loZMhrIkd8g+EtXHkv/iD4jol1t74sz9Krd4UBwwb8e1m1i:foZiL+EP8jol1t74sz9Krd4UBVP

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1271092970023817296/NkKCMn5zqg4ml58ODlhvOcqmYQCDbLC_YD4IGJVRuYwOcqaITa__QmT-3snoswsolAau

Targets

    • Target

      7bc86d2e18813d4d06d2d39894762b90N.exe

    • Size

      229KB

    • MD5

      7bc86d2e18813d4d06d2d39894762b90

    • SHA1

      6203740dc4dde0290d4827f479f6d08a91a7c699

    • SHA256

      70575d18c218295c13e10e6d50b48af76d00f4dd46ed0d5010aaf212b0ea61af

    • SHA512

      1918500c3bed431277318d03db3a4d39c0f3a81dcc782aa60d4108e6836593d20aa22d79884e2bb54fd9bc7a63a0dcad8536156437e69f0c020b5e1ad552d685

    • SSDEEP

      6144:9loZMhrIkd8g+EtXHkv/iD4jol1t74sz9Krd4UBwwb8e1m1i:foZiL+EP8jol1t74sz9Krd4UBVP

    • 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

    • 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