Overview

overview

10

Static

static

3

random.exe

windows7-x64

10

random.exe

windows10-ltsc 2021-x64

10

random.exe

windows11-21h2-x64

10

Sharing

Copy URL Twitter E-mail

General

  • Target
    random.exe
  • Size 1.7MB
  • Sample250208-xsskxaynez
  • SHA256 6d29273fe7963ba9fafcf715d48ff3d63fc44256f40d10b3108a8f93cd97a1f0
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
stealcrenocredential_accessdefense_evasiondiscoveryspywarestealer

Malware Config

Extracted

Family

  • stealc

Botnet

  • reno

C2

  • http://185.215.113.115

Attributes
  • url_path

    /c4becf79229cb002.php

Targets

    • Target
      random.exe
    • Size 1.7MB
    • SHA256 6d29273fe7963ba9fafcf715d48ff3d63fc44256f40d10b3108a8f93cd97a1f0
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    stealcrenodefense_evasiondiscoverystealercredential_accessspyware

    • Stealc

      Stealc is an infostealer written in C++.

      stealerstealc

    • Stealc family

      stealc

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

      defense_evasion

    • Downloads MZ/PE file

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

      credential_accessstealer

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

      defense_evasion

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Modify Authentication Process

1
T1556

Privilege Escalation

Defense Evasion

Modify Authentication Process

1
T1556

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Modify Authentication Process

1
T1556

Steal Web Session Cookie

1
T1539

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Browser Information Discovery

1
T1217

Query Registry

6
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Virtualization/Sandbox Evasion

2
T1497

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks