General

  • Target

    NightyBatchDropper.bat

  • Size

    5KB

  • Sample

    240507-t93weshf32

  • MD5

    e6ab5c0e289dec446649106e3ae5967e

  • SHA1

    5ceb0cc36503829a268805a76b29fbc0741c5445

  • SHA256

    caef8631cfa691871889f8f211d50823d55f06227b0c3d3ab619ef83d70c147a

  • SHA512

    b3cb2e62e5bd564ca4ef31833f27a332bd3594bccd6c75a3b2947ebceffee06b3eb7f48434bcdd6fbe617780f4dd4bcf69595fdf36b86198e9fa95263b6c5bf6

  • SSDEEP

    96:O6fB4ORjW1Dy29DBi0xtymoN++MfVEj/TImnhofGlBvYnbhCz48CbuCpxi2K1tlX:OofeU+tLohTleG/wnO6ppxi5yvRQq6sc

Malware Config

Extracted

Family

xworm

C2

45.88.90.198:1500

Attributes
  • Install_directory

    %AppData%

  • install_file

    WindowSC.exe

Targets

    • Target

      NightyBatchDropper.bat

    • Size

      5KB

    • MD5

      e6ab5c0e289dec446649106e3ae5967e

    • SHA1

      5ceb0cc36503829a268805a76b29fbc0741c5445

    • SHA256

      caef8631cfa691871889f8f211d50823d55f06227b0c3d3ab619ef83d70c147a

    • SHA512

      b3cb2e62e5bd564ca4ef31833f27a332bd3594bccd6c75a3b2947ebceffee06b3eb7f48434bcdd6fbe617780f4dd4bcf69595fdf36b86198e9fa95263b6c5bf6

    • SSDEEP

      96:O6fB4ORjW1Dy29DBi0xtymoN++MfVEj/TImnhofGlBvYnbhCz48CbuCpxi2K1tlX:OofeU+tLohTleG/wnO6ppxi5yvRQq6sc

    • 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

    • Modifies Windows Defender Real-time Protection settings

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Drops startup file

    • 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.

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

4
T1112

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

System Information Discovery

3
T1082

Query Registry

3
T1012

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Impact

Defacement

1
T1491

Tasks