Overview

overview

10

Static

static

10

Windows Defender.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-03-2023 16:56

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General

  • Target

    Windows Defender.exe

  • Size

    76KB

  • MD5

    dcf97bdb41eb351d2fc4ea91f624423d

  • SHA1

    d3715326aebfa2e71c1e7a56567fabfafb4728fa

  • SHA256

    41754180b11159c68cf543787d84256a5dc2d1c567074cb13362c24d011df89f

  • SHA512

    f017a7ce00f9d4b920e707ab8a41dc26975f54e28e2a0ed564e59b20cdd1785472e28848c1b8b5f0d5903ac7778277051c04a6a7e671685594d17d5b8f716491

  • SSDEEP

    1536:zIFalQfMYoiS/PjeUe7W1SzWCBxjkbk9I6BTK4eF4JOC1vZ1eK8V4:ccQfMYoisr1sNBxjkbk9IUIqJOC1vZ1p

Score
10/10
xwormpersistencerattrojan

Malware Config

Signatures

  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • 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). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 2 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\Windows Defender.exe
    "C:\Users\Admin\AppData\Local\Temp\Windows Defender.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1332
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Windows Defender" /tr "C:\Users\Admin\AppData\Roaming\Windows Defender.exe"
      2⤵
      • Creates scheduled task(s)
      PID:3340
  • C:\Users\Admin\AppData\Roaming\Windows Defender.exe
    "C:\Users\Admin\AppData\Roaming\Windows Defender.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3828
  • C:\Users\Admin\AppData\Roaming\Windows Defender.exe
    "C:\Users\Admin\AppData\Roaming\Windows Defender.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4412

Network

MITRE ATT&CK Enterprise v6

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Downloads

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

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

    Download Submit

  • C:\Users\Admin\AppData\Roaming\Windows Defender.exe
    Filesize

    76KB

    MD5

    dcf97bdb41eb351d2fc4ea91f624423d

    SHA1

    d3715326aebfa2e71c1e7a56567fabfafb4728fa

    SHA256

    41754180b11159c68cf543787d84256a5dc2d1c567074cb13362c24d011df89f

    SHA512

    f017a7ce00f9d4b920e707ab8a41dc26975f54e28e2a0ed564e59b20cdd1785472e28848c1b8b5f0d5903ac7778277051c04a6a7e671685594d17d5b8f716491

    Download Submit

  • C:\Users\Admin\AppData\Roaming\Windows Defender.exe
    Filesize

    76KB

    MD5

    dcf97bdb41eb351d2fc4ea91f624423d

    SHA1

    d3715326aebfa2e71c1e7a56567fabfafb4728fa

    SHA256

    41754180b11159c68cf543787d84256a5dc2d1c567074cb13362c24d011df89f

    SHA512

    f017a7ce00f9d4b920e707ab8a41dc26975f54e28e2a0ed564e59b20cdd1785472e28848c1b8b5f0d5903ac7778277051c04a6a7e671685594d17d5b8f716491

    Download Submit

  • C:\Users\Admin\AppData\Roaming\Windows Defender.exe
    Filesize

    76KB

    MD5

    dcf97bdb41eb351d2fc4ea91f624423d

    SHA1

    d3715326aebfa2e71c1e7a56567fabfafb4728fa

    SHA256

    41754180b11159c68cf543787d84256a5dc2d1c567074cb13362c24d011df89f

    SHA512

    f017a7ce00f9d4b920e707ab8a41dc26975f54e28e2a0ed564e59b20cdd1785472e28848c1b8b5f0d5903ac7778277051c04a6a7e671685594d17d5b8f716491

    Download Submit

  • C:\Users\Admin\AppData\Roaming\Windows Defender.exe
    Filesize

    76KB

    MD5

    dcf97bdb41eb351d2fc4ea91f624423d

    SHA1

    d3715326aebfa2e71c1e7a56567fabfafb4728fa

    SHA256

    41754180b11159c68cf543787d84256a5dc2d1c567074cb13362c24d011df89f

    SHA512

    f017a7ce00f9d4b920e707ab8a41dc26975f54e28e2a0ed564e59b20cdd1785472e28848c1b8b5f0d5903ac7778277051c04a6a7e671685594d17d5b8f716491

    Download Submit

  • memory/1332-133-0x00000000003E0000-0x00000000003FA000-memory.dmp

    Filesize

    104KB

    Download

  • memory/1332-134-0x000000001C860000-0x000000001C870000-memory.dmp

    Filesize

    64KB

    Download

  • memory/1332-143-0x000000001C860000-0x000000001C870000-memory.dmp

    Filesize

    64KB

    Download