Overview

overview

10

Static

static

3

666d91620d...e5.exe

windows7-x64

8

666d91620d...e5.exe

windows10-2004-x64

10

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General

  • Target

    666d91620d589b16b55f847c0c84396419461844d9ab844ad39a7df9d88c34e5.exe

  • Size

    1.3MB

  • Sample

    241214-ntabaazre1

  • MD5

    9fa71bd01a54e0726de72e272bcbe6eb

  • SHA1

    03822545415f9dc69207495898c706c0d8340807

  • SHA256

    666d91620d589b16b55f847c0c84396419461844d9ab844ad39a7df9d88c34e5

  • SHA512

    32eaa6c191f077de67251af4057ee9fee6d9ea69d58ce6d6a1c6f5623ba26013152ae614d1465939f44ad9e2125caed786fa4abc821082845037a9ab1d2a27af

  • SSDEEP

    24576:x0kpqP4E3+rAOymAfu86lJ5qKYv8aIlbRnxYUsNV/qXOlY/nZZMR:kwKcATbG8TKrOlNxqXTvMR

Score
10/10
umbraldiscoveryexecutionstealer

Malware Config

Targets

    • Target

      666d91620d589b16b55f847c0c84396419461844d9ab844ad39a7df9d88c34e5.exe

    • Size

      1.3MB

    • MD5

      9fa71bd01a54e0726de72e272bcbe6eb

    • SHA1

      03822545415f9dc69207495898c706c0d8340807

    • SHA256

      666d91620d589b16b55f847c0c84396419461844d9ab844ad39a7df9d88c34e5

    • SHA512

      32eaa6c191f077de67251af4057ee9fee6d9ea69d58ce6d6a1c6f5623ba26013152ae614d1465939f44ad9e2125caed786fa4abc821082845037a9ab1d2a27af

    • SSDEEP

      24576:x0kpqP4E3+rAOymAfu86lJ5qKYv8aIlbRnxYUsNV/qXOlY/nZZMR:kwKcATbG8TKrOlNxqXTvMR

    Score
    10/10
    discoveryexecutionumbralstealer

    • Detect Umbral payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

      stealerumbral

    • Umbral family

      umbral

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • 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 SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks