Analysis

  • max time kernel
    61s
  • max time network
    18s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    31-05-2024 13:59

General

  • Target

    XClient.exe

  • Size

    105KB

  • MD5

    1776474422ad23624684d38269ed0683

  • SHA1

    9ac322fbcc2bd9c18fe10ab338ff50fdc91977b8

  • SHA256

    5db58c7cb9d8c1d9ec6792b2a5fa3cc38de31f9fecbecc1d4ff2f4ac3a0340f6

  • SHA512

    4431c2c6c88e3604657e710d21068724646e0f3458949aac984b62464e81f534ec8404cf4a063217074fc6563e0e8329c1ce1d61647f73255e6f487c3130fc04

  • SSDEEP

    1536:8JroawfDQDzE1yh6lsA2l+boehSoW0Nn+6dOFRGaPcUk/uoDjSBSc7UtYV8:uZDg02sAO+bounNOfGbv1W0cgte8

Malware Config

Extracted

Family

xworm

C2

19.ip.gl.ply.gg:65468

speed-wheat.gl.at.ply.gg:65468

XWorm V5.2:123

Attributes
  • Install_directory

    %AppData%

  • install_file

    Delta.exe

Signatures

  • Detect Xworm Payload 3 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 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\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • 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:1656
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1936
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2592
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\Delta.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1944
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Delta.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2652
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Delta" /tr "C:\Users\Admin\AppData\Roaming\Delta.exe"
      2⤵
      • Creates scheduled task(s)
      PID:2544
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {1BA173F4-EAA4-428B-B8CD-6B1F2F28329C} S-1-5-21-2737914667-933161113-3798636211-1000:PUMARTNR\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2580
    • C:\Users\Admin\AppData\Roaming\Delta.exe
      C:\Users\Admin\AppData\Roaming\Delta.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2848

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    105KB

    MD5

    1776474422ad23624684d38269ed0683

    SHA1

    9ac322fbcc2bd9c18fe10ab338ff50fdc91977b8

    SHA256

    5db58c7cb9d8c1d9ec6792b2a5fa3cc38de31f9fecbecc1d4ff2f4ac3a0340f6

    SHA512

    4431c2c6c88e3604657e710d21068724646e0f3458949aac984b62464e81f534ec8404cf4a063217074fc6563e0e8329c1ce1d61647f73255e6f487c3130fc04

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

    Filesize

    7KB

    MD5

    7000e55d2814993bfdc62a8ff4e131ba

    SHA1

    0ef4e5de33bc94e6167954710b0eacc7cd245d52

    SHA256

    9b95169ec71dc0c959843e0937a430447de0a2b7b3ed60fd68213c9b8626cee9

    SHA512

    5f73b26d7969f0dc661f7fe3a581ccc4d4dfed223600d3aa032511a9815f0f3f9beeaaa56fc19a5714bd927e50c5fa7fb9f86af3ade4c3c65796688053fea749

  • \??\PIPE\srvsvc

    MD5

    d41d8cd98f00b204e9800998ecf8427e

    SHA1

    da39a3ee5e6b4b0d3255bfef95601890afd80709

    SHA256

    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

    SHA512

    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

  • memory/1656-1-0x00000000009B0000-0x00000000009D0000-memory.dmp

    Filesize

    128KB

  • memory/1656-37-0x000000001B2F0000-0x000000001B370000-memory.dmp

    Filesize

    512KB

  • memory/1656-0-0x000007FEF5753000-0x000007FEF5754000-memory.dmp

    Filesize

    4KB

  • memory/1656-32-0x000007FEF5753000-0x000007FEF5754000-memory.dmp

    Filesize

    4KB

  • memory/1656-31-0x000000001B2F0000-0x000000001B370000-memory.dmp

    Filesize

    512KB

  • memory/1936-7-0x000000001B480000-0x000000001B762000-memory.dmp

    Filesize

    2.9MB

  • memory/1936-8-0x0000000001E90000-0x0000000001E98000-memory.dmp

    Filesize

    32KB

  • memory/1936-6-0x0000000001D30000-0x0000000001DB0000-memory.dmp

    Filesize

    512KB

  • memory/2592-15-0x0000000001D10000-0x0000000001D18000-memory.dmp

    Filesize

    32KB

  • memory/2592-14-0x000000001B7A0000-0x000000001BA82000-memory.dmp

    Filesize

    2.9MB

  • memory/2848-36-0x0000000001390000-0x00000000013B0000-memory.dmp

    Filesize

    128KB