General

  • Target

    everything.exe

  • Size

    231KB

  • Sample

    240918-hw1ncsybkh

  • MD5

    c230d0ffbb5ba00f2bc8a3e51c831d30

  • SHA1

    ba14e05c5b2f9bd82895598e4e037971cb88cb75

  • SHA256

    cf7b9914e5b25efd7b449a9426d8d2cb570440da613b0bf7b258b425d2c6a7a0

  • SHA512

    d4930c2f78d55037819d276e4321d43b759fb063834fd6b0e494730bad35f6815c2665106a3a976e8902b58b058a09ab3d6369c56dcc16aebfa487dbf66ef318

  • SSDEEP

    6144:RloZMArIkd8g+EtXHkv/iD4av2h3tW+xdkt/qqfsCb8e1mKi:joZHL+EP8av2h3tW+xdkt/qqfPI

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1285683399893192828/AEw6MF303hXfjbK02zpyu0AdvR_sfhAsyG-DlzKXxhfLpxTE1nBfdIM4YwXm9U-_Cpnc

Targets

    • Target

      everything.exe

    • Size

      231KB

    • MD5

      c230d0ffbb5ba00f2bc8a3e51c831d30

    • SHA1

      ba14e05c5b2f9bd82895598e4e037971cb88cb75

    • SHA256

      cf7b9914e5b25efd7b449a9426d8d2cb570440da613b0bf7b258b425d2c6a7a0

    • SHA512

      d4930c2f78d55037819d276e4321d43b759fb063834fd6b0e494730bad35f6815c2665106a3a976e8902b58b058a09ab3d6369c56dcc16aebfa487dbf66ef318

    • SSDEEP

      6144:RloZMArIkd8g+EtXHkv/iD4av2h3tW+xdkt/qqfsCb8e1mKi:joZHL+EP8av2h3tW+xdkt/qqfPI

    • 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.

MITRE ATT&CK Enterprise v15

Tasks