Overview

overview

10

Static

static

10

Steam.exe

windows7-x64

10

Steam.exe

windows10-2004-x64

Sharing

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General

  • Target

    Steam.exe

  • Size

    80KB

  • Sample

    240523-st63gafg57

  • MD5

    925c5ac8505847f51b4dbef340716238

  • SHA1

    ecfb0b836deb64fa714f0cfc7f41e0f68e85c762

  • SHA256

    926ba0df92e1f9b1841c1b04e4d101cbc3ce9c8019f6ac3c717380cd85643f92

  • SHA512

    0780eb215f0caee0d63dddbceffb37c498729024957db8347f8df26a2a1df26138275bebfdd595f29549e2c775cd226c9980850daced72809e0b148e1b4c84c6

  • SSDEEP

    1536:+v1oTUiT1jJuO+uSjic+b7LIafbVe66xFtOGZPSUQ:ASXu6Sj1+b7EeAtOG4N

Score
10/10
xwormexecutionpersistencerattrojan

Malware Config

Extracted

Family

xworm

C2

help-wt.gl.at.ply.gg:60294

Attributes
  • Install_directory

    %AppData%

  • install_file

    Steam.exe

Targets

    • Target

      Steam.exe

    • Size

      80KB

    • MD5

      925c5ac8505847f51b4dbef340716238

    • SHA1

      ecfb0b836deb64fa714f0cfc7f41e0f68e85c762

    • SHA256

      926ba0df92e1f9b1841c1b04e4d101cbc3ce9c8019f6ac3c717380cd85643f92

    • SHA512

      0780eb215f0caee0d63dddbceffb37c498729024957db8347f8df26a2a1df26138275bebfdd595f29549e2c775cd226c9980850daced72809e0b148e1b4c84c6

    • SSDEEP

      1536:+v1oTUiT1jJuO+uSjic+b7LIafbVe66xFtOGZPSUQ:ASXu6Sj1+b7EeAtOG4N

    Score
    10/10
    xwormexecutionpersistencerattrojan

    • 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

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks