Overview

overview

10

Static

static

10

XClient.exe

windows7-x64

10

XClient.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-05-2024 07:14

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General

  • Target

    XClient.exe

  • Size

    41KB

  • MD5

    0658f349a11af82050212edf3f599342

  • SHA1

    0fa5f0818a7e50fd312f5dab4b7150de7df9fa7e

  • SHA256

    5da1772e67ac37571ed70b498e237cde750647607d4fe98fd8e7fd8668e0c0e0

  • SHA512

    0c337cf6b38a2e2c7078813c61086a173c5761f4b90efdbee85fd7edb4f16731d66a9ea95bc4988340b64e37d75b4227b224a110bb0e64fc36e076511857c3f7

  • SSDEEP

    768:TKr2/FPtKX7eRvIiWqyAuIzfjFSuDatF5PG9sJOwhU3ECN:The7EI3RAuwxSuDuFI9sJOwGlN

Score
10/10
xwormpersistencerattrojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

panel-slave.gl.at.ply.gg:57059

Mutex

kdrfWObdXWjh7iBF

Attributes
  • Install_directory

    %AppData%

  • install_file

    $77client.exe

aes.plain

Signatures

  • Detect Xworm Payload 2 IoCs
  • 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 3 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).

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

    persistence
  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 5 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\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4408
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "$77client" /tr "C:\Users\Admin\AppData\Roaming\$77client.exe"
      2⤵
      • Creates scheduled task(s)
      PID:3692
    • C:\Users\Admin\AppData\Local\Temp\udkxly.exe
      "C:\Users\Admin\AppData\Local\Temp\udkxly.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:3200
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x508 0x518
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3348
  • C:\Users\Admin\AppData\Roaming\$77client.exe
    C:\Users\Admin\AppData\Roaming\$77client.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4268
  • C:\Users\Admin\AppData\Roaming\$77client.exe
    C:\Users\Admin\AppData\Roaming\$77client.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3632

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\$77client.exe.log
    Filesize

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\udkxly.exe
    Filesize

    277KB

    MD5

    dac0c5b2380cbdd93b46763427c9f8df

    SHA1

    038089e1a0ac8375be797fc3ce7ae719abc72834

    SHA256

    d02538788fb57f568ece292f5fc20e9775c86d504de67f57e22534f84adc73c6

    SHA512

    05cc1f6bf25a6545a06c735ae7a4a7fc25489bdb9fbc8d5797be623982662c4a93cba2d20bfe14313ef1548eaaa691e55fabdd8e3d3e45de9ab42dc62f9a7023

    Download Submit

  • C:\Users\Admin\AppData\Roaming\$77client.exe
    Filesize

    41KB

    MD5

    0658f349a11af82050212edf3f599342

    SHA1

    0fa5f0818a7e50fd312f5dab4b7150de7df9fa7e

    SHA256

    5da1772e67ac37571ed70b498e237cde750647607d4fe98fd8e7fd8668e0c0e0

    SHA512

    0c337cf6b38a2e2c7078813c61086a173c5761f4b90efdbee85fd7edb4f16731d66a9ea95bc4988340b64e37d75b4227b224a110bb0e64fc36e076511857c3f7

    Download Submit

  • memory/4408-0-0x00007FFE30513000-0x00007FFE30515000-memory.dmp

    Filesize

    8KB

    Download

  • memory/4408-1-0x0000000000F90000-0x0000000000FA0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/4408-2-0x00007FFE30510000-0x00007FFE30FD1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/4408-7-0x000000001DD60000-0x000000001DD6C000-memory.dmp

    Filesize

    48KB

    Download

  • memory/4408-8-0x000000001EC00000-0x000000001F128000-memory.dmp

    Filesize

    5.2MB

    Download

  • memory/4408-9-0x000000001DD70000-0x000000001DD7C000-memory.dmp

    Filesize

    48KB

    Download

  • memory/4408-10-0x00007FFE30513000-0x00007FFE30515000-memory.dmp

    Filesize

    8KB

    Download

  • memory/4408-11-0x00007FFE30510000-0x00007FFE30FD1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/4408-12-0x0000000020860000-0x00000000208EE000-memory.dmp

    Filesize

    568KB

    Download