Overview

overview

9

Static

static

3

mrb42usb.exe

windows10-2004-x64

9

Sharing

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General

  • Target
    mrb42usb.exe
  • Size 16.1MB
  • Sample260922-ss613shc48
  • SHA256 2eb9d7c8e263edc916a2e62d63e093c9b334bc4c12dfe9586e0d99d493e236b5
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
defense_evasiondiscoveryexecutionransomwarespywarestealer

Malware Config

Targets

    • Target
      mrb42usb.exe
    • Size 16.1MB
    • SHA256 2eb9d7c8e263edc916a2e62d63e093c9b334bc4c12dfe9586e0d99d493e236b5
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    9/10
    defense_evasiondiscoveryexecutionransomwarespywarestealer

    • Renames multiple (395) files with added filename extension

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

      ransomware

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to get system information.

      execution

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

      defense_evasion

    • Network Service Discovery

      Attempt to gather information on host's network.

      discovery

    • Discovers running processes

      Running process information can be used to identify security tools or plan follow-on actions.

      discovery
    behavioral1

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2
T1059

PowerShell

1
T1059.001

Windows Command Shell

1
T1059.003

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

1
T1564

Ignore Process Interrupts

1
T1564.011

Indicator Removal

1
T1070

File Deletion

1
T1070.004

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

Browser Information Discovery

1
T1217

Network Service Discovery

1
T1046

Peripheral Device Discovery

1
T1120

Process Discovery

1
T1057

Query Registry

3
T1012

System Information Discovery

3
T1082

System Time Discovery

1
T1124

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks