Overview

overview

10

Static

static

3

spoofer.exe

windows11-21h2-x64

10

Sharing

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General

  • Target

    spoofer.exe

  • Size

    3.5MB

  • Sample

    240902-m5ppnsydpl

  • MD5

    3c56b4fcf99ce74580b0bcdd2c978578

  • SHA1

    880625e1750ee2bf2b100e3e13c7c4202a538fc1

  • SHA256

    ddb51226b6d3d1533056c37154572fdf496da7c13e60749cf56b0a18c9b91345

  • SHA512

    7f1dc7ec2b7f9e29307fb8f756ff4820996f19b7116288f13205777472fcaffc7ca4ee92ab99e4341f4b5cc33e177c3fa5f967d1a1dfa80b7553083c865be75d

  • SSDEEP

    98304:Mr1TElHYDD3FrZpZqIuWPVe9J3FspZzbxXDPIUW2X9F:MB2H4VrtqKVispZ/xXDAWF

Score
10/10
umbralcredential_accessdiscoveryexecutionpersistenceransomwarespywarestealer

Malware Config

Targets

    • Target

      spoofer.exe

    • Size

      3.5MB

    • MD5

      3c56b4fcf99ce74580b0bcdd2c978578

    • SHA1

      880625e1750ee2bf2b100e3e13c7c4202a538fc1

    • SHA256

      ddb51226b6d3d1533056c37154572fdf496da7c13e60749cf56b0a18c9b91345

    • SHA512

      7f1dc7ec2b7f9e29307fb8f756ff4820996f19b7116288f13205777472fcaffc7ca4ee92ab99e4341f4b5cc33e177c3fa5f967d1a1dfa80b7553083c865be75d

    • SSDEEP

      98304:Mr1TElHYDD3FrZpZqIuWPVe9J3FspZzbxXDPIUW2X9F:MB2H4VrtqKVispZ/xXDAWF

    Score
    10/10
    umbralcredential_accessdiscoveryexecutionpersistenceransomwarespywarestealer

    • Detect Umbral payload

    • Umbral

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

      stealerumbral

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

      credential_accessstealer

    • Renames multiple (87) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • 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

    • Adds Run key to start application

      persistence

    • 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.

    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Modify Registry

1
T1112

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Remote System Discovery

1
T1018

System Information Discovery

2
T1082

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Tasks