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Analysis

  • max time kernel
    118s
  • max time network
    94s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22/01/2025, 15:19

General

  • Target

    37df6c75773a17be3487e82ca20139252d7c5ca15e0cc4fd08a0b93ae87adbd3.exe

  • Size

    52KB

  • MD5

    02279d272e81a497330f22cfa866dc54

  • SHA1

    11228964549687fcabdc66a3059cd75fcf18bdcd

  • SHA256

    37df6c75773a17be3487e82ca20139252d7c5ca15e0cc4fd08a0b93ae87adbd3

  • SHA512

    9eff45b22dadec11c640f97d994d6e744aa17f9fb8131eecfdf431a6e2cb18f7b9e1eb29717377430c4c7c48a71ba2ef0afc7c55eea7974b2d46372ccb2c9f67

  • SSDEEP

    1536:cpHDSBc87/UWF70l/Crbi/OZu71Omwkn2OBCyO:cYW8rHF70l/Ybi/HOt+fTO

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:8848

u-football.gl.at.ply.gg:8848

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Signatures

  • Detect Xworm Payload 3 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 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.

  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 6 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\37df6c75773a17be3487e82ca20139252d7c5ca15e0cc4fd08a0b93ae87adbd3.exe
    "C:\Users\Admin\AppData\Local\Temp\37df6c75773a17be3487e82ca20139252d7c5ca15e0cc4fd08a0b93ae87adbd3.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2508
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2704
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {4DE34E0B-F0C5-439C-A61B-C05FDE05B9E9} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2156
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2812

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\XClient.exe

    Filesize

    52KB

    MD5

    02279d272e81a497330f22cfa866dc54

    SHA1

    11228964549687fcabdc66a3059cd75fcf18bdcd

    SHA256

    37df6c75773a17be3487e82ca20139252d7c5ca15e0cc4fd08a0b93ae87adbd3

    SHA512

    9eff45b22dadec11c640f97d994d6e744aa17f9fb8131eecfdf431a6e2cb18f7b9e1eb29717377430c4c7c48a71ba2ef0afc7c55eea7974b2d46372ccb2c9f67

  • memory/2508-0-0x000007FEF4FC3000-0x000007FEF4FC4000-memory.dmp

    Filesize

    4KB

  • memory/2508-1-0x0000000001230000-0x0000000001244000-memory.dmp

    Filesize

    80KB

  • memory/2508-2-0x000007FEF4FC0000-0x000007FEF59AC000-memory.dmp

    Filesize

    9.9MB

  • memory/2508-7-0x000007FEF4FC3000-0x000007FEF4FC4000-memory.dmp

    Filesize

    4KB

  • memory/2508-8-0x000007FEF4FC0000-0x000007FEF59AC000-memory.dmp

    Filesize

    9.9MB

  • memory/2812-13-0x0000000000CA0000-0x0000000000CB4000-memory.dmp

    Filesize

    80KB