Analysis

  • max time kernel
    133s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/11/2024, 10:11

General

  • Target
    d8c874b2f3101b888c0307a3135326263d65665adf93e5cada122c765a054adc.exe
  • Size 158KB
  • Sample241105-l7zf8azepp
  • SHA256 d8c874b2f3101b888c0307a3135326263d65665adf93e5cada122c765a054adc
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • xworm

C2
  • xxxx.freedynamicdns.net:1997

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    explorer.exe

  • telegram

    https://api.telegram.org/bot7470132733:AAFv29agMHCbkbiHbNHt7LzTib-Els5808o/sendMessage?chat_id=761641337

Signatures

  • Detect Xworm Payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Looks up external IP address via web service 1 IoCs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d8c874b2f3101b888c0307a3135326263d65665adf93e5cada122c765a054adc.exe
    "C:\Users\Admin\AppData\Local\Temp\d8c874b2f3101b888c0307a3135326263d65665adf93e5cada122c765a054adc.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:1640
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1640 -s 1756
      2⤵
      • Program crash
      PID:1444
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1640 -ip 1640
    1⤵
      PID:2404

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/1640-0-0x0000000074A6E000-0x0000000074A6F000-memory.dmp

          memory/1640-1-0x00000000001E0000-0x000000000020E000-memory.dmp

          memory/1640-2-0x0000000004C10000-0x0000000004CAC000-memory.dmp

          memory/1640-3-0x0000000004B60000-0x0000000004B78000-memory.dmp

          memory/1640-4-0x0000000074A60000-0x0000000075210000-memory.dmp

          memory/1640-5-0x0000000004BC0000-0x0000000004BDA000-memory.dmp

          memory/1640-6-0x0000000005230000-0x0000000005296000-memory.dmp

          memory/1640-7-0x0000000074A60000-0x0000000075210000-memory.dmp