Overview

overview

10

Static

static

3

FIXER-2.3.exe

windows10-1703-x64

10

FIXER-2.3.exe

windows11-21h2-x64

10

Sharing

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General

  • Target

    FIXER-2.3.exe

  • Size

    678KB

  • Sample

    240605-trytracf29

  • MD5

    c4a81b5b47dab29d88805f75c95035a0

  • SHA1

    092fcb36a736198e19530c96991d9bcb0354fa75

  • SHA256

    1ce288b4eace5690b66c6681e77f4f75d1c5fda07eab5a410ffe38271d515909

  • SHA512

    eb98f91df470f6f52ad8db2d44da3a090b63d4067e371ca8df1b5e54e7623123d6ba7df779b27cf6298d7778b415e9569f29c62ef6276f8d666134ff4aa7006e

  • SSDEEP

    6144:u4zMHU2N3RSUDqnopqonzuv4NIAyxuQiOfFs3OJ18xNz+KgbqUypit:u44RuS78onzuv4NIAAuQkOzu

Score
10/10
umbralexecutionspywarestealer

Malware Config

Extracted

Family

umbral

C2

https://discordapp.com/api/webhooks/1247657758921330688/6inL47rtBda5FWXQ9j3KkuojoQUQIHytZMOftRLQPHv1vmGRuP44zUd_P2lo-8gb3cBC

Targets

    • Target

      FIXER-2.3.exe

    • Size

      678KB

    • MD5

      c4a81b5b47dab29d88805f75c95035a0

    • SHA1

      092fcb36a736198e19530c96991d9bcb0354fa75

    • SHA256

      1ce288b4eace5690b66c6681e77f4f75d1c5fda07eab5a410ffe38271d515909

    • SHA512

      eb98f91df470f6f52ad8db2d44da3a090b63d4067e371ca8df1b5e54e7623123d6ba7df779b27cf6298d7778b415e9569f29c62ef6276f8d666134ff4aa7006e

    • SSDEEP

      6144:u4zMHU2N3RSUDqnopqonzuv4NIAyxuQiOfFs3OJ18xNz+KgbqUypit:u44RuS78onzuv4NIAAuQkOzu

    Score
    10/10
    umbralstealerexecutionspyware

    • Detect Umbral payload

    • Umbral

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

      stealerumbral

    • Command and Scripting Interpreter: PowerShell

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

      execution

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks