Overview

overview

10

Static

static

3

tmpsngxofs3.exe

windows10-ltsc_2021-x64

10

tmpsngxofs3.exe

windows10-2004-x64

10

tmpsngxofs3.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    02/06/2026, 02:55

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General

  • Target
    tmpsngxofs3.exe
  • Size 1016KB
  • Sample260602-del2esct2v
  • SHA256 64c983843d97da8c80b6fb8af1e3cb42396844dd7e17861f6c132bf46fbe486b
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoverypykspapersistenceprivilege_escalationtrojanworm

Malware Config

Signatures

  • Family: Pykspa

    Pykspa is a worm spreads via Skype uses DGA and it's written in C++.

    wormpykspa
  • Detect Pykspa worm 2 IoCs
    worm
  • Modifies WinLogon for persistence 2 TTPs 5 IoCs
    persistence
  • UAC bypass 3 TTPs 14 IoCs
    defense_evasiontrojan
  • Adds policy Run key to start application 2 TTPs 33 IoCs
    persistence
  • Disables RegEdit via registry modification 6 IoCs
    defense_evasion
  • Checks computer location settings 2 TTPs 8 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 28 IoCs
  • Impair Defenses: Safe Mode Boot 1 TTPs 6 IoCs
    defense_evasion
  • Adds Run key to start application 2 TTPs 64 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 10 IoCs
    defense_evasiontrojan
  • Hijack Execution Flow: Executable Installer File Permissions Weakness 1 TTPs 3 IoCs

    Possible Turn off User Account Control's privilege elevation for standard users.

    defense_evasionpersistenceprivilege_escalation
  • Looks up external IP address via web service 9 IoCs

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

  • Drops autorun.inf file 1 TTPs 4 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 39 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 39 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 18 IoCs

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

    discovery
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • System policy modification 1 TTPs 40 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpsngxofs3.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpsngxofs3.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5696
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\users\admin\appdata\local\temp\tmpsngxofs3.exe*"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Hijack Execution Flow: Executable Installer File Permissions Weakness
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2136
      • C:\Users\Admin\AppData\Local\Temp\mtxcfo.exe
        "C:\Users\Admin\AppData\Local\Temp\mtxcfo.exe" "-C:\Users\Admin\AppData\Local\Temp\ypdsfylgsjejxydt.exe"
        3⤵
        • Modifies WinLogon for persistence
        • UAC bypass
        • Adds policy Run key to start application
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Impair Defenses: Safe Mode Boot
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Hijack Execution Flow: Executable Installer File Permissions Weakness
        • Drops autorun.inf file
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • System policy modification
        PID:3200
      • C:\Users\Admin\AppData\Local\Temp\mtxcfo.exe
        "C:\Users\Admin\AppData\Local\Temp\mtxcfo.exe" "-C:\Users\Admin\AppData\Local\Temp\ypdsfylgsjejxydt.exe"
        3⤵
        • Modifies WinLogon for persistence
        • UAC bypass
        • Adds policy Run key to start application
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Hijack Execution Flow: Executable Installer File Permissions Weakness
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System policy modification
        PID:5776
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\users\admin\appdata\local\temp\tmpsngxofs3.exe"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:4116
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:5548
  • C:\Windows\ztkcsoecrljrimunghd.exe
    ztkcsoecrljrimunghd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5280
  • C:\Windows\fxmcqkyuhzvbqsypg.exe
    fxmcqkyuhzvbqsypg.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3484
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\fxmcqkyuhzvbqsypg.exe*."
      2⤵
      • Executes dropped EXE
      PID:972
  • C:\Windows\ohxodynkyrovlovnff.exe
    ohxodynkyrovlovnff.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4912
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\ohxodynkyrovlovnff.exe*."
      2⤵
      • Executes dropped EXE
      PID:5392
  • C:\Users\Admin\AppData\Local\Temp\fxmcqkyuhzvbqsypg.exe
    C:\Users\Admin\AppData\Local\Temp\fxmcqkyuhzvbqsypg.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:6048
  • C:\Users\Admin\AppData\Local\Temp\mhzsjgxwmhgphmvpjlid.exe
    C:\Users\Admin\AppData\Local\Temp\mhzsjgxwmhgphmvpjlid.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5688
  • C:\Windows\ypdsfylgsjejxydt.exe
    ypdsfylgsjejxydt.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5852
  • C:\Windows\fxmcqkyuhzvbqsypg.exe
    fxmcqkyuhzvbqsypg.exe
    1⤵
    • Executes dropped EXE
    PID:5172
  • C:\Windows\ztkcsoecrljrimunghd.exe
    ztkcsoecrljrimunghd.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1108
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\ztkcsoecrljrimunghd.exe*."
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:3916
  • C:\Windows\bxqkcassjffpioytorple.exe
    bxqkcassjffpioytorple.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2592
  • C:\Windows\bxqkcassjffpioytorple.exe
    bxqkcassjffpioytorple.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5184
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\bxqkcassjffpioytorple.exe*."
      2⤵
      • Executes dropped EXE
      PID:4368
  • C:\Windows\mhzsjgxwmhgphmvpjlid.exe
    mhzsjgxwmhgphmvpjlid.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5676
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\mhzsjgxwmhgphmvpjlid.exe*."
      2⤵
      • Executes dropped EXE
      PID:1256
  • C:\Users\Admin\AppData\Local\Temp\ztkcsoecrljrimunghd.exe
    C:\Users\Admin\AppData\Local\Temp\ztkcsoecrljrimunghd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3852
  • C:\Users\Admin\AppData\Local\Temp\bxqkcassjffpioytorple.exe
    C:\Users\Admin\AppData\Local\Temp\bxqkcassjffpioytorple.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:668
  • C:\Users\Admin\AppData\Local\Temp\ohxodynkyrovlovnff.exe
    C:\Users\Admin\AppData\Local\Temp\ohxodynkyrovlovnff.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1112
  • C:\Windows\mhzsjgxwmhgphmvpjlid.exe
    mhzsjgxwmhgphmvpjlid.exe
    1⤵
    • Executes dropped EXE
    PID:5456
  • C:\Windows\ypdsfylgsjejxydt.exe
    ypdsfylgsjejxydt.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2544
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\ypdsfylgsjejxydt.exe*."
      2⤵
      • Executes dropped EXE
      PID:1896
  • C:\Users\Admin\AppData\Local\Temp\ypdsfylgsjejxydt.exe
    C:\Users\Admin\AppData\Local\Temp\ypdsfylgsjejxydt.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1208
  • C:\Windows\ohxodynkyrovlovnff.exe
    ohxodynkyrovlovnff.exe
    1⤵
    • Executes dropped EXE
    PID:2216

Network

        MITRE ATT&CK Enterprise v16

        Reconnaissance

        Resource Development

        Initial Access

        Replication Through Removable Media

        1
        T1091

        Execution

        Persistence

        Boot or Logon Autostart Execution

        3
        T1547

        Registry Run Keys / Startup Folder

        2
        T1547.001

        Winlogon Helper DLL

        1
        T1547.004

        Hijack Execution Flow

        1
        T1574

        Executable Installer File Permissions Weakness

        1
        T1574.005

        Privilege Escalation

        Abuse Elevation Control Mechanism

        1
        T1548

        Bypass User Account Control

        1
        T1548.002

        Boot or Logon Autostart Execution

        3
        T1547

        Registry Run Keys / Startup Folder

        2
        T1547.001

        Winlogon Helper DLL

        1
        T1547.004

        Hijack Execution Flow

        1
        T1574

        Executable Installer File Permissions Weakness

        1
        T1574.005

        Defense Evasion

        Abuse Elevation Control Mechanism

        1
        T1548

        Bypass User Account Control

        1
        T1548.002

        Hijack Execution Flow

        1
        T1574

        Executable Installer File Permissions Weakness

        1
        T1574.005

        Impair Defenses

        2
        T1562

        Disable or Modify Tools

        1
        T1562.001

        Safe Mode Boot

        1
        T1562.009

        Modify Registry

        5
        T1112

        Credential Access

        Discovery

        Query Registry

        1
        T1012

        System Information Discovery

        3
        T1082

        System Location Discovery

        1
        T1614

        System Language Discovery

        1
        T1614.001

        Lateral Movement

        Replication Through Removable Media

        1
        T1091

        Collection

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

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        Downloads

        ddayuwswrrvjgqedcjlli.cea
        • Path C:\Program Files (x86)\ddayuwswrrvjgqedcjlli.cea
        • Size 280B
        • SHA256 20942655706856ea3f1574a2fee78f9edae39c7fb70b0d2b66be6aad28e483a4
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        ddayuwswrrvjgqedcjlli.cea
        • Path C:\Program Files (x86)\ddayuwswrrvjgqedcjlli.cea
        • Size 280B
        • SHA256 283525830dc8d32a64d24cd463a5e30f0b5964ffe9b96a472833a28d66f723b7
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        ddayuwswrrvjgqedcjlli.cea
        • Path C:\Program Files (x86)\ddayuwswrrvjgqedcjlli.cea
        • Size 280B
        • SHA256 b251374ae12aa3db40729f24cf590f52efa7250059bf05723cce6c0e2231d10f
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        mtxcfo.exe
        • Path C:\Users\Admin\AppData\Local\Temp\mtxcfo.exe
        • Size 696KB
        • SHA256 c398e8e59b08a5901a3d6c45a7c6807ea7fb349a53f3d62e6dcc0b6853f08387
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        vveaalwpffo.exe
        • Path C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
        • Size 320KB
        • SHA256 1f151075609a50a6fc048976422e495cf5225e887f7c203aa5ebe6cab3c52f8e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ddayuwswrrvjgqedcjlli.cea
        • Path C:\Users\Admin\AppData\Local\ddayuwswrrvjgqedcjlli.cea
        • Size 280B
        • SHA256 7f72f0cb31bf18d81cc35521178191d8a750b8c3df50360047962366b6a6348b
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        yjrahubqwhwvdyxhrjwhpyfszoufutbw.fph
        • Path C:\Users\Admin\AppData\Local\yjrahubqwhwvdyxhrjwhpyfszoufutbw.fph
        • Size 4KB
        • SHA256 d4085a1a027cfd70394bc341c33cfec19e1b16fa50dc491eca7a0183680e0341
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ohxodynkyrovlovnff.exe
        • Path C:\Windows\SysWOW64\ohxodynkyrovlovnff.exe
        • Size 1016KB
        • SHA256 64c983843d97da8c80b6fb8af1e3cb42396844dd7e17861f6c132bf46fbe486b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download