Overview

overview

10

Static

static

3

build.exe

windows7-x64

10

build.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    101s
  • max time network
    99s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/03/2025, 01:34

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General

  • Target

    build.exe

  • Size

    51KB

  • MD5

    79cd45fb4ce03b7262bfca18f71f76df

  • SHA1

    1cb7866b67768b8f15415cd33a4cbc1d284cb77e

  • SHA256

    495c535f89ad9319b97b59b52eb5d690315c202f9add743061dc53b4b583b610

  • SHA512

    370ff53c5f3648667c761c9d60f4f3ace99e2745b0253780c8dd0d87bca3c03e65c60f756bf8ea17a2f0790dbefa6ede6c0bcb7014f921cd51c945d53e4c8950

  • SSDEEP

    1536:fwFIJ7n5Yptm6YCLgJwu4NFD0T5YKAYjZHgbyJ:pJ9Yptm6YCLgau4NGTJAYjZHWg

Score
10/10
xwormrattrojan

Malware Config

Extracted

Family

xworm

C2

links-recovered.at.ply.gg:32508

Mutex

XSLvYVsJZs3bsiZr

Attributes
  • install_file

    USB.exe

aes.plain

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Xworm family
    xworm
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\build.exe
    "C:\Users\Admin\AppData\Local\Temp\build.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2976
    • C:\Users\Admin\AppData\Roaming\build.exe
      "C:\Users\Admin\AppData\Roaming\build.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:216
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4812
    • C:\Users\Admin\AppData\Local\Temp\build.exe
      "C:\Users\Admin\AppData\Local\Temp\build.exe"
      1⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:3048
      • C:\Users\Admin\AppData\Roaming\build.exe
        "C:\Users\Admin\AppData\Roaming\build.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:4624
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /7
      1⤵
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:220
    • C:\Windows\System32\toa7cl.exe
      "C:\Windows\System32\toa7cl.exe"
      1⤵
        PID:4688

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\build.exe.log
        Filesize

        654B

        MD5

        2ff39f6c7249774be85fd60a8f9a245e

        SHA1

        684ff36b31aedc1e587c8496c02722c6698c1c4e

        SHA256

        e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

        SHA512

        1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

        Download Submit

      • C:\Users\Admin\AppData\Roaming\build.exe
        Filesize

        42KB

        MD5

        522dcda6332f8fccbf277125a6b42b4a

        SHA1

        de959fb7d34ec6c3849c330f41dd1a4bc593ce2b

        SHA256

        de0330f6d59aa4d90c77af385145e5566c2d6dfec6e66a86d0c1d1f68e415d9d

        SHA512

        c3d02dfd6d1ec759b989b2f0e96b79c263bbf97264378b8da4103b3166490cdf23969729060bda23a7f41b9e43a758f56435416dbd396ec7c2f579bd285d537c

        Download Submit

      • memory/216-17-0x00007FFFC9610000-0x00007FFFCA0D1000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/216-18-0x00007FFFC9610000-0x00007FFFCA0D1000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/216-15-0x0000000000B60000-0x0000000000B70000-memory.dmp

        Filesize

        64KB

        Download

      • memory/216-16-0x00007FFFC9610000-0x00007FFFCA0D1000-memory.dmp

        Filesize

        10.8MB

        Download

      • memory/220-32-0x000001D3C8E30000-0x000001D3C8E31000-memory.dmp

        Filesize

        4KB

        Download

      • memory/220-31-0x000001D3C8E30000-0x000001D3C8E31000-memory.dmp

        Filesize

        4KB

        Download

      • memory/220-30-0x000001D3C8E30000-0x000001D3C8E31000-memory.dmp

        Filesize

        4KB

        Download

      • memory/220-42-0x000001D3C8E30000-0x000001D3C8E31000-memory.dmp

        Filesize

        4KB

        Download

      • memory/220-41-0x000001D3C8E30000-0x000001D3C8E31000-memory.dmp

        Filesize

        4KB

        Download

      • memory/220-40-0x000001D3C8E30000-0x000001D3C8E31000-memory.dmp

        Filesize

        4KB

        Download

      • memory/220-39-0x000001D3C8E30000-0x000001D3C8E31000-memory.dmp

        Filesize

        4KB

        Download

      • memory/220-38-0x000001D3C8E30000-0x000001D3C8E31000-memory.dmp

        Filesize

        4KB

        Download

      • memory/220-37-0x000001D3C8E30000-0x000001D3C8E31000-memory.dmp

        Filesize

        4KB

        Download

      • memory/220-36-0x000001D3C8E30000-0x000001D3C8E31000-memory.dmp

        Filesize

        4KB

        Download

      • memory/2976-1-0x0000000000330000-0x0000000000344000-memory.dmp

        Filesize

        80KB

        Download

      • memory/2976-0-0x00007FFFC9613000-0x00007FFFC9615000-memory.dmp

        Filesize

        8KB

        Download