General

  • Target

    uhm, uhh.exe

  • Size

    229KB

  • Sample

    240808-t3wtjawdjj

  • MD5

    0d407796194f47dd4739950f347631dc

  • SHA1

    2e843294cd4ccbdcb53b0ca4cdcb0d6640d75615

  • SHA256

    1ab54a5786eeedb01e74215a50a796fefbd12c47c0b864b1be5f6d45a2951bf4

  • SHA512

    b70550be02cc4b622fa35c0189884104a2b6719e8b593e156b74874cffc835a906df3b746b2247c2bffffbb47be6470ba3ac16cb2c8e163785f64650c43a4b97

  • SSDEEP

    6144:tloZMNrIkd8g+EtXHkv/iD41KaC9rI8j867NokRQg4db8e1mAG+Iwi:voZmL+EP81KaC9rI8j867NokRQgkC+Ip

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1271141434103169109/ZGzKrH_1KmFwmD5L6kWIR8gCyf2CGPFd_mKQUDOFv2JFuE-13CviLcUsxJZlpFmd_je3

Targets

    • Target

      uhm, uhh.exe

    • Size

      229KB

    • MD5

      0d407796194f47dd4739950f347631dc

    • SHA1

      2e843294cd4ccbdcb53b0ca4cdcb0d6640d75615

    • SHA256

      1ab54a5786eeedb01e74215a50a796fefbd12c47c0b864b1be5f6d45a2951bf4

    • SHA512

      b70550be02cc4b622fa35c0189884104a2b6719e8b593e156b74874cffc835a906df3b746b2247c2bffffbb47be6470ba3ac16cb2c8e163785f64650c43a4b97

    • SSDEEP

      6144:tloZMNrIkd8g+EtXHkv/iD41KaC9rI8j867NokRQg4db8e1mAG+Iwi:voZmL+EP81KaC9rI8j867NokRQgkC+Ip

    • 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.

    • 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