Overview

overview

10

Static

static

10

malwarebytes.exe

windows7-x64

10

malwarebytes.exe

windows10-2004-x64

Sharing

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General

  • Target

    malwarebytes.exe

  • Size

    241KB

  • Sample

    240520-3s228sbd93

  • MD5

    dd0f8de042ac4f25f4ea2fdad1b400e9

  • SHA1

    b3ee26bf6696947c3f121fdfc945a364cb9f380c

  • SHA256

    e92371ee237fd85f32abeede968a8341bb432ce7044b0a1761f777c0f1ae870f

  • SHA512

    d70a4a40e546004b912683d23aab270f7300b89374f0837d0a637b32acae16aff1bff453fadb30a071e60f7295c5d31e5021a42b55ed106d057ec825bfac9127

  • SSDEEP

    3072:2+PF0iKTup6b2wkwwOCEgKY8SKfbzxcwg7es6/Vsb8VKTu549oJMfF/H9N3Ky9Ns:Tp6bFRkUhcX7elbKTua9bfF/H9d9n

Score
10/10
xwormevasionexecutionpersistencerattrojan

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %AppData%

  • install_file

    win32.exe

  • pastebin_url

    https://pastebin.com/raw/mxJuykEA

Targets

    • Target

      malwarebytes.exe

    • Size

      241KB

    • MD5

      dd0f8de042ac4f25f4ea2fdad1b400e9

    • SHA1

      b3ee26bf6696947c3f121fdfc945a364cb9f380c

    • SHA256

      e92371ee237fd85f32abeede968a8341bb432ce7044b0a1761f777c0f1ae870f

    • SHA512

      d70a4a40e546004b912683d23aab270f7300b89374f0837d0a637b32acae16aff1bff453fadb30a071e60f7295c5d31e5021a42b55ed106d057ec825bfac9127

    • SSDEEP

      3072:2+PF0iKTup6b2wkwwOCEgKY8SKfbzxcwg7es6/Vsb8VKTu549oJMfF/H9N3Ky9Ns:Tp6bFRkUhcX7elbKTua9bfF/H9d9n

    Score
    10/10
    xwormevasionexecutionpersistencerattrojan

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

      trojanratxworm

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Modifies Windows Firewall

      evasion

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Uses the VBS compiler for execution

    • 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.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scripting

1
T1064

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

1
T1112

Scripting

1
T1064

Credential Access

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Tasks