Overview

overview

10

Static

static

10

3tb.exe

windows10-2004-x64

10

3tb.exe

windows11-ltsc_2024-x64

10

Analysis

  • user interaction
    yes
  • max time kernel
    122s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    25/09/2026, 23:58

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General

  • Target
    3tb.exe
  • Size 32KB
  • Sample260925-31hcsszz2r
  • SHA256 48d86c7b8fff38a191671aec1fb9b0523a98292f1acb938e9dccbaed240f91b9
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoveryexecutionxwormpersistenceprivilege_escalationransomwarerattrojan

Malware Config

Extracted

Family

  • xworm

Version

  • 5.0

C2

  • 6.tcp.cpolar.cn:14575

Mutex

  • uOgHnAIFrdJFp4RO

Attributes
  • install_file

    USB.exe

aes.plain

Signatures

  • Family: Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Contains code to disable Windows Defender 1 IoCs

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

  • Detect Xworm Payload 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    persistenceprivilege_escalation
  • Executes dropped EXE 1 IoCs
  • Modifies system executable filetype association 2 TTPs 16 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

    discovery
  • Modifies registry class 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\3tb.exe
    "C:\Users\Admin\AppData\Local\Temp\3tb.exe"
    1⤵
    • Checks computer location settings
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5592
    • C:\Users\Admin\AppData\Local\Temp\jotdyp.exe
      "C:\Users\Admin\AppData\Local\Temp\jotdyp.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4272
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /k reg delete HKCR /f
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4540
        • C:\Windows\system32\reg.exe
          reg delete HKCR /f
          4⤵
          • Modifies system executable filetype association
          • Modifies registry class
          PID:1264
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x4e4 0x308
    1⤵
      PID:4436

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          jotdyp.exe
          • Path C:\Users\Admin\AppData\Local\Temp\jotdyp.exe
          • Size 11KB
          • SHA256 f5d89dba8a1e11ee3de0e08a460b11a251034b80791dab22e2e2c46274944ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/4272-15-0x0000000000DF0000-0x0000000000DFA000-memory.dmp
          Download

          memory/4272-16-0x000000001B8D0000-0x000000001B8E0000-memory.dmp
          Download

          memory/4272-20-0x000000001B8D0000-0x000000001B8E0000-memory.dmp
          Download

          memory/5592-0-0x0000000000330000-0x000000000033E000-memory.dmp
          Download

          memory/5592-1-0x000000001AF50000-0x000000001AF60000-memory.dmp
          Download

          memory/5592-2-0x000000001AF50000-0x000000001AF60000-memory.dmp
          Download

          memory/5592-3-0x00000000023D0000-0x00000000023DE000-memory.dmp
          Download