Overview

overview

10

Static

static

10

Chrome.exe

windows7-x64

10

Chrome.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    145s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    20/11/2024, 13:20

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General

  • Target

    Chrome.exe

  • Size

    197KB

  • MD5

    f956d04fc1f44a110400e8aaf76fa48b

  • SHA1

    8c8e7b049e81058dda63facc0aeb790f670be99e

  • SHA256

    e413b898bcf92f62736144346100f00a74904a13d94cfe4d2aef5aca31e1154e

  • SHA512

    95e5ca134e3479bde58a08567935ef8159b20dde7157bfeb81c23929ae7a89a15e699e1764c7dcea4d23cd254d27759f70af5c6b7e21c9d3358f9b4019539224

  • SSDEEP

    3072:T4z/dMSbSzout45JpO5JMal9SXe4NpVq8BxFRzaqF+o2GQJ7/JzqVfGv9:T4Znb0out4n+/gVqwlL

Score
10/10
xwormpersistencerattrojan

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %Temp%

  • install_file

    Chrome.exe

  • pastebin_url

    https://pastebin.com/raw/H3wFXmEi

Signatures

  • Detect Xworm Payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Xworm family
    xworm
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 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).

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 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\Chrome.exe
    "C:\Users\Admin\AppData\Local\Temp\Chrome.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2384
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Chrome" /tr "C:\Users\Admin\AppData\Local\Temp\Chrome.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2576
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {D1A59B92-5A39-4E43-851F-F2220E8EE69D} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2568
    • C:\Users\Admin\AppData\Local\Temp\Chrome.exe
      C:\Users\Admin\AppData\Local\Temp\Chrome.exe
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2608
    • C:\Users\Admin\AppData\Local\Temp\Chrome.exe
      C:\Users\Admin\AppData\Local\Temp\Chrome.exe
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:320
    • C:\Users\Admin\AppData\Local\Temp\Chrome.exe
      C:\Users\Admin\AppData\Local\Temp\Chrome.exe
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2420

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2384-0-0x000007FEF5D93000-0x000007FEF5D94000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2384-1-0x00000000002F0000-0x0000000000328000-memory.dmp

    Filesize

    224KB

    Download

  • memory/2384-2-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp

    Filesize

    9.9MB

    Download

  • memory/2384-4-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp

    Filesize

    9.9MB

    Download