Overview

overview

10

Static

static

10

WaveInstaller.exe

windows7-x64

10

WaveInstaller.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    WaveInstaller.exe

  • Size

    229KB

  • Sample

    240703-xa2e4asejn

  • MD5

    7ca49c1e4deac51030961240dc071e44

  • SHA1

    dbe976f4e1ca8476cf35105e214e98c071bdb601

  • SHA256

    c4969a3f443dc0c21066c9b801a86d8802585ed708f209cd418d0252541884bd

  • SHA512

    cb70825c4cebc592cfe281214f3a614a5a0eac78dac3cc0a5da7116b9d2eb5af718745067c0c7be3b2957c3ddade18416171863490d40c0bec8162e0322303ae

  • SSDEEP

    6144:FloZMZrIkd8g+EtXHkv/iD4SpQvDJ6id1IJbGmTuOb8e1mBi:HoZ6L+EP8SpQvDJ6id1IJbGmT5D

Score
10/10
umbralexecutionspywarestealer

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1257990750105239572/oxObyEqK8LZqJLF9958xM8O0ELZTwn2jyxVKBszQf6OpxSVsjZjE1JOm2PnReGiCbZkI

Targets

    • Target

      WaveInstaller.exe

    • Size

      229KB

    • MD5

      7ca49c1e4deac51030961240dc071e44

    • SHA1

      dbe976f4e1ca8476cf35105e214e98c071bdb601

    • SHA256

      c4969a3f443dc0c21066c9b801a86d8802585ed708f209cd418d0252541884bd

    • SHA512

      cb70825c4cebc592cfe281214f3a614a5a0eac78dac3cc0a5da7116b9d2eb5af718745067c0c7be3b2957c3ddade18416171863490d40c0bec8162e0322303ae

    • SSDEEP

      6144:FloZMZrIkd8g+EtXHkv/iD4SpQvDJ6id1IJbGmTuOb8e1mBi:HoZ6L+EP8SpQvDJ6id1IJbGmT5D

    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

    • Reads user/profile data of web browsers

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

      spywarestealer

    • 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.

    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

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

System Information Discovery

1
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks