Overview

overview

10

Static

static

3

Twitch-Pat...er.exe

windows11-21h2-x64

10

Sharing

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General

  • Target

    Twitch-Patcheur-30.2.2-Windows-Installer.exe

  • Size

    187KB

  • Sample

    240809-19xsqsscmm

  • MD5

    2dde97d542da5e24e9a7b8dc754cfe23

  • SHA1

    5f73f214ba314bacbc8367e5c97ba0283dd0a6e5

  • SHA256

    165ba0408d39838ba395b44d1666c06e6a9d0db34907020bc524763d97c286a6

  • SHA512

    58754183f468c4bb0b063f0d2507df97b2bef7f6ba25f4ceaaacb66d07f6a1ba470bf5bda1d68837046f90b797e3bb13a6da5315dbcc421ebf323190ab3c8797

  • SSDEEP

    3072:PV3J6kkt5h1X+HqTi0BW69hd1MMdxPe9N9uA0/+hL9TBfnPu43g0UasVmkoYcMK0:Ct5hBPi0BW69hd1MMdxPe9N9uA069TBg

Score
10/10
umbralcredential_accessdiscoverydropperexecutionexploitransomwarestealer

Malware Config

Targets

    • Target

      Twitch-Patcheur-30.2.2-Windows-Installer.exe

    • Size

      187KB

    • MD5

      2dde97d542da5e24e9a7b8dc754cfe23

    • SHA1

      5f73f214ba314bacbc8367e5c97ba0283dd0a6e5

    • SHA256

      165ba0408d39838ba395b44d1666c06e6a9d0db34907020bc524763d97c286a6

    • SHA512

      58754183f468c4bb0b063f0d2507df97b2bef7f6ba25f4ceaaacb66d07f6a1ba470bf5bda1d68837046f90b797e3bb13a6da5315dbcc421ebf323190ab3c8797

    • SSDEEP

      3072:PV3J6kkt5h1X+HqTi0BW69hd1MMdxPe9N9uA0/+hL9TBfnPu43g0UasVmkoYcMK0:Ct5hBPi0BW69hd1MMdxPe9N9uA069TBg

    Score
    10/10
    umbralcredential_accessdiscoverydropperexecutionexploitransomwarestealer

    • 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

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Download via BitsAdmin

      dropper

    • Drops file in Drivers directory

    • Possible privilege escalation attempt

      exploit

    • Drops startup file

    • Executes dropped EXE

    • Modifies file permissions

      discovery

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • 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.

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Persistence

BITS Jobs

1
T1197

Privilege Escalation

Defense Evasion

BITS Jobs

1
T1197

File and Directory Permissions Modification

1
T1222

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

Discovery

Browser Information Discovery

1
T1217

Peripheral Device Discovery

1
T1120

Query Registry

1
T1012

Remote System Discovery

1
T1018

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

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Defacement

1
T1491

Tasks