General

  • Target

    123.exe

  • Size

    484KB

  • Sample

    240829-sjvxfsxhqb

  • MD5

    2aa4f648d160439b834046fc7eaf4db3

  • SHA1

    7b0da6b64838ea63766e628893b8a08acff406f7

  • SHA256

    b34cce587000413f4f48699964dbf1cfcbb2718f0c7749196e1caf154743702d

  • SHA512

    d12de3fa54f2bfa81498c1301d957793095869d334d09dffe5be429e92bc2e064ad4a025da643164a25a499fa26ded267e08f847ce8c6b6b0a4242083d42e75e

  • SSDEEP

    12288:soZrL+EP8e/WB1DA0rgSjVg8ZWVo8kYFNLQd2nLyNz67:yI8wWB1DA0rgSjVg8ZW95MILyM7

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1278684969610252319/yBhsLJdMxB4CMKJHb-dAGghzSPAr0CHcCs4V4WXp7t2rrE6M1zTIuH-KHwgs32LoA0dm

Targets

    • Target

      123.exe

    • Size

      484KB

    • MD5

      2aa4f648d160439b834046fc7eaf4db3

    • SHA1

      7b0da6b64838ea63766e628893b8a08acff406f7

    • SHA256

      b34cce587000413f4f48699964dbf1cfcbb2718f0c7749196e1caf154743702d

    • SHA512

      d12de3fa54f2bfa81498c1301d957793095869d334d09dffe5be429e92bc2e064ad4a025da643164a25a499fa26ded267e08f847ce8c6b6b0a4242083d42e75e

    • SSDEEP

      12288:soZrL+EP8e/WB1DA0rgSjVg8ZWVo8kYFNLQd2nLyNz67:yI8wWB1DA0rgSjVg8ZW95MILyM7

    • 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

      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