General

  • Target

    thegreatestexploits_services.exe

  • Size

    1.2MB

  • Sample

    240725-qb8ggazfjl

  • MD5

    aaaf987d8a27c805d177c6063b645be0

  • SHA1

    64eda37efbbbc0cbedcd33f1594223d96d5b9803

  • SHA256

    d864686dd77c81f89803fe21bc596b9188fd2b9ade88f618d60206a9e167953d

  • SHA512

    5126f43fcf8e5f5f62f701b4575d7fd3dfc046614b0889d8dc73631ff876d5998d3f5994743847282270cfa20ba7911d206a41cba3e7327eb017f3fdbe9eefa3

  • SSDEEP

    24576:UxRQjzTD/YM9mIqvJlk0/sFR1TbtXwiSwVizX5C1Wmmrj:YRYzTRMYT5btawQNCXmr

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1265015414048428153/VWNDpNZhZlKVwrtnGdcffRijkAKSf8EgngZwE8gCRJ90aR_H6BmlLSPeh2FFEO31-nto

Targets

    • Target

      thegreatestexploits_services.exe

    • Size

      1.2MB

    • MD5

      aaaf987d8a27c805d177c6063b645be0

    • SHA1

      64eda37efbbbc0cbedcd33f1594223d96d5b9803

    • SHA256

      d864686dd77c81f89803fe21bc596b9188fd2b9ade88f618d60206a9e167953d

    • SHA512

      5126f43fcf8e5f5f62f701b4575d7fd3dfc046614b0889d8dc73631ff876d5998d3f5994743847282270cfa20ba7911d206a41cba3e7327eb017f3fdbe9eefa3

    • SSDEEP

      24576:UxRQjzTD/YM9mIqvJlk0/sFR1TbtXwiSwVizX5C1Wmmrj:YRYzTRMYT5btawQNCXmr

    • 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

    • 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.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks