Overview

overview

10

Static

static

3

tmpl3zf8n54.exe

windows10-ltsc_2021-x64

10

tmpl3zf8n54.exe

windows10-2004-x64

10

tmpl3zf8n54.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    02/06/2026, 03:47

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General

  • Target
    tmpl3zf8n54.exe
  • Size 812KB
  • Sample260602-ecjzqaew5p
  • SHA256 110412f2f3e3257b0e6bf514aa866903fd1968e661dbbd54ccf5faae0c12cb8f
  • 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 7 IoCs
    persistence
  • UAC bypass 3 TTPs 16 IoCs
    defense_evasiontrojan
  • Adds policy Run key to start application 2 TTPs 36 IoCs
    persistence
  • Disables RegEdit via registry modification 6 IoCs
    defense_evasion
  • 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 14 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 4 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 53 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 53 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 19 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 44 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpl3zf8n54.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpl3zf8n54.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5132
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\users\admin\appdata\local\temp\tmpl3zf8n54.exe*"
      2⤵
      • 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 Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:4572
      • C:\Users\Admin\AppData\Local\Temp\xcquwir.exe
        "C:\Users\Admin\AppData\Local\Temp\xcquwir.exe" "-C:\Users\Admin\AppData\Local\Temp\wkhufasjqidamcnp.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:2076
      • C:\Users\Admin\AppData\Local\Temp\xcquwir.exe
        "C:\Users\Admin\AppData\Local\Temp\xcquwir.exe" "-C:\Users\Admin\AppData\Local\Temp\wkhufasjqidamcnp.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:4080
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\users\admin\appdata\local\temp\tmpl3zf8n54.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:5548
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3868
  • C:\Windows\mcbqdaunwqnmasfjtx.exe
    mcbqdaunwqnmasfjtx.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3420
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\mcbqdaunwqnmasfjtx.exe*."
      2⤵
      • Executes dropped EXE
      PID:4712
  • C:\Windows\kcdujiezkgfgwqflxdgy.exe
    kcdujiezkgfgwqflxdgy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1944
  • C:\Users\Admin\AppData\Local\Temp\wkhufasjqidamcnp.exe
    C:\Users\Admin\AppData\Local\Temp\wkhufasjqidamcnp.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4676
  • C:\Users\Admin\AppData\Local\Temp\dsqeqmfxfyusfwilu.exe
    C:\Users\Admin\AppData\Local\Temp\dsqeqmfxfyusfwilu.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4172
  • C:\Windows\wkhufasjqidamcnp.exe
    wkhufasjqidamcnp.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5480
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\wkhufasjqidamcnp.exe*."
      2⤵
      • Executes dropped EXE
      PID:5184
  • C:\Windows\dsqeqmfxfyusfwilu.exe
    dsqeqmfxfyusfwilu.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5232
  • C:\Windows\mcbqdaunwqnmasfjtx.exe
    mcbqdaunwqnmasfjtx.exe
    1⤵
    • Executes dropped EXE
    PID:4988
  • C:\Windows\dsqeqmfxfyusfwilu.exe
    dsqeqmfxfyusfwilu.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5720
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\dsqeqmfxfyusfwilu.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:2728
  • C:\Users\Admin\AppData\Local\Temp\xooesqlfpkiixqejuzb.exe
    C:\Users\Admin\AppData\Local\Temp\xooesqlfpkiixqejuzb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1900
  • C:\Windows\kcdujiezkgfgwqflxdgy.exe
    kcdujiezkgfgwqflxdgy.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3232
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\kcdujiezkgfgwqflxdgy.exe*."
      2⤵
      • Executes dropped EXE
      PID:3380
  • C:\Windows\zsumcczvheegxsipcjngi.exe
    zsumcczvheegxsipcjngi.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1480
  • C:\Windows\xooesqlfpkiixqejuzb.exe
    xooesqlfpkiixqejuzb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4440
  • C:\Users\Admin\AppData\Local\Temp\zsumcczvheegxsipcjngi.exe
    C:\Users\Admin\AppData\Local\Temp\zsumcczvheegxsipcjngi.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3636
  • C:\Users\Admin\AppData\Local\Temp\mcbqdaunwqnmasfjtx.exe
    C:\Users\Admin\AppData\Local\Temp\mcbqdaunwqnmasfjtx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3036
  • C:\Windows\xooesqlfpkiixqejuzb.exe
    xooesqlfpkiixqejuzb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5088
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\xooesqlfpkiixqejuzb.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:3832
  • C:\Users\Admin\AppData\Local\Temp\kcdujiezkgfgwqflxdgy.exe
    C:\Users\Admin\AppData\Local\Temp\kcdujiezkgfgwqflxdgy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2588
  • C:\Windows\wkhufasjqidamcnp.exe
    wkhufasjqidamcnp.exe
    1⤵
    • Executes dropped EXE
    PID:3884
  • C:\Windows\zsumcczvheegxsipcjngi.exe
    zsumcczvheegxsipcjngi.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1960
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\zsumcczvheegxsipcjngi.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:4160

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

        System Information Discovery

        2
        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

        zcoqqahnjqamnssjgxloaccmtzv.myz
        • Path C:\Program Files (x86)\zcoqqahnjqamnssjgxloaccmtzv.myz
        • Size 272B
        • SHA256 4b3f5bc4627060018ab7d4a1486c8224122eb4bc558ef352494fd20d8687fd05
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zcoqqahnjqamnssjgxloaccmtzv.myz
        • Path C:\Program Files (x86)\zcoqqahnjqamnssjgxloaccmtzv.myz
        • Size 272B
        • SHA256 ec1b1962618f60d378ef76f59b189051c5dfc2dd0ba2cb4ad418ce2054a99536
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zcoqqahnjqamnssjgxloaccmtzv.myz
        • Path C:\Program Files (x86)\zcoqqahnjqamnssjgxloaccmtzv.myz
        • Size 272B
        • SHA256 55ce891ec3fe55b27b3ba402dcc15f8bcd1d52f1f31f5422e01382c62d185b56
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zcoqqahnjqamnssjgxloaccmtzv.myz
        • Path C:\Program Files (x86)\zcoqqahnjqamnssjgxloaccmtzv.myz
        • Size 272B
        • SHA256 65b33106c612ba54abe78af845687b220d6244b684db40a9dc96d025d34d6c46
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        umtekhkhewd.exe
        • Path C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
        • Size 320KB
        • SHA256 d936bfd3b4264fe1650dee22119858b9d0cc58598e7e956ebecf72fb82f7c7d3
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        xcquwir.exe
        • Path C:\Users\Admin\AppData\Local\Temp\xcquwir.exe
        • Size 704KB
        • SHA256 65b8521132cd25636b6a2b164ede90d5ae4dc1733d41d210309c771a85da3543
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        wkhufasjqidamcnpxzymjwhculskfcoeprzbao.yje
        • Path C:\Users\Admin\AppData\Local\wkhufasjqidamcnpxzymjwhculskfcoeprzbao.yje
        • Size 3KB
        • SHA256 de76a9bae94bce5eeb44635ef6875b1c4f43f37ca74caf7b5d49bab52bc747e1
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zcoqqahnjqamnssjgxloaccmtzv.myz
        • Path C:\Users\Admin\AppData\Local\zcoqqahnjqamnssjgxloaccmtzv.myz
        • Size 272B
        • SHA256 f7feb53bc2819f2039633acb302e4e49c05675b662fe7ff2aec23aa708c5093c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zcoqqahnjqamnssjgxloaccmtzv.myz
        • Path C:\Users\Admin\AppData\Local\zcoqqahnjqamnssjgxloaccmtzv.myz
        • Size 272B
        • SHA256 d996ddd044502f2ef311419b93d7232a83f7482d6c0b4e2455f6c0d94c65ca71
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zcoqqahnjqamnssjgxloaccmtzv.myz
        • Path C:\Users\Admin\AppData\Local\zcoqqahnjqamnssjgxloaccmtzv.myz
        • Size 272B
        • SHA256 dd64ac350611c0cf15313dbbfd5cc3e676518a09d91530904457f63c73fa75a7
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        mcbqdaunwqnmasfjtx.exe
        • Path C:\Windows\SysWOW64\mcbqdaunwqnmasfjtx.exe
        • Size 812KB
        • SHA256 110412f2f3e3257b0e6bf514aa866903fd1968e661dbbd54ccf5faae0c12cb8f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download