Overview

overview

10

Static

static

3

tmp5ckt7rkl.exe

windows10-ltsc_2021-x64

10

tmp5ckt7rkl.exe

windows10-2004-x64

10

tmp5ckt7rkl.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    155s
  • 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, 03:16

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General

  • Target
    tmp5ckt7rkl.exe
  • Size 500KB
  • Sample260602-dsffssdz6r
  • SHA256 4d47748d468183acadc83dd0e267884a78c808630e59ec2433f34cf06f5a6bb8
  • 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 40 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 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 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 44 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp5ckt7rkl.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp5ckt7rkl.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2552
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\users\admin\appdata\local\temp\tmp5ckt7rkl.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:1108
      • C:\Users\Admin\AppData\Local\Temp\zdkpv.exe
        "C:\Users\Admin\AppData\Local\Temp\zdkpv.exe" "-C:\Users\Admin\AppData\Local\Temp\wldtkaodvimvqtxc.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 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:5068
      • C:\Users\Admin\AppData\Local\Temp\zdkpv.exe
        "C:\Users\Admin\AppData\Local\Temp\zdkpv.exe" "-C:\Users\Admin\AppData\Local\Temp\wldtkaodvimvqtxc.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:4204
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\users\admin\appdata\local\temp\tmp5ckt7rkl.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:224
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:1476
  • C:\Windows\ztqlhcvpmenbbjsctrnhe.exe
    ztqlhcvpmenbbjsctrnhe.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4232
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\ztqlhcvpmenbbjsctrnhe.exe*."
      2⤵
      • Executes dropped EXE
      PID:856
  • C:\Users\Admin\AppData\Local\Temp\ztqlhcvpmenbbjsctrnhe.exe
    C:\Users\Admin\AppData\Local\Temp\ztqlhcvpmenbbjsctrnhe.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2364
  • C:\Windows\xpkdxqhzukrdbhowlhb.exe
    xpkdxqhzukrdbhowlhb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4740
  • C:\Windows\mdxpiaqhbqwhejpwkf.exe
    mdxpiaqhbqwhejpwkf.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3132
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\mdxpiaqhbqwhejpwkf.exe*."
      2⤵
      • Executes dropped EXE
      PID:2304
  • C:\Users\Admin\AppData\Local\Temp\mdxpiaqhbqwhejpwkf.exe
    C:\Users\Admin\AppData\Local\Temp\mdxpiaqhbqwhejpwkf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2032
  • C:\Windows\ztqlhcvpmenbbjsctrnhe.exe
    ztqlhcvpmenbbjsctrnhe.exe
    1⤵
    • Executes dropped EXE
    PID:4548
  • C:\Windows\kdztoiatpgobahpyolgz.exe
    kdztoiatpgobahpyolgz.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3180
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\kdztoiatpgobahpyolgz.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:652
  • C:\Windows\dtmdvmbrkydnjnsyl.exe
    dtmdvmbrkydnjnsyl.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3968
  • C:\Users\Admin\AppData\Local\Temp\wldtkaodvimvqtxc.exe
    C:\Users\Admin\AppData\Local\Temp\wldtkaodvimvqtxc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3368
  • C:\Users\Admin\AppData\Local\Temp\kdztoiatpgobahpyolgz.exe
    C:\Users\Admin\AppData\Local\Temp\kdztoiatpgobahpyolgz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2120
  • C:\Windows\dtmdvmbrkydnjnsyl.exe
    dtmdvmbrkydnjnsyl.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2720
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\dtmdvmbrkydnjnsyl.exe*."
      2⤵
      • Executes dropped EXE
      PID:3360
  • C:\Users\Admin\AppData\Local\Temp\xpkdxqhzukrdbhowlhb.exe
    C:\Users\Admin\AppData\Local\Temp\xpkdxqhzukrdbhowlhb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3176
  • C:\Windows\wldtkaodvimvqtxc.exe
    wldtkaodvimvqtxc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4020
  • C:\Windows\wldtkaodvimvqtxc.exe
    wldtkaodvimvqtxc.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3120
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\wldtkaodvimvqtxc.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:3896
  • C:\Windows\mdxpiaqhbqwhejpwkf.exe
    mdxpiaqhbqwhejpwkf.exe
    1⤵
    • Executes dropped EXE
    PID:1464
  • C:\Users\Admin\AppData\Local\Temp\dtmdvmbrkydnjnsyl.exe
    C:\Users\Admin\AppData\Local\Temp\dtmdvmbrkydnjnsyl.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2672
  • C:\Windows\xpkdxqhzukrdbhowlhb.exe
    xpkdxqhzukrdbhowlhb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2400
    • C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
      "C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe" "c:\windows\xpkdxqhzukrdbhowlhb.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:1652
  • C:\Windows\kdztoiatpgobahpyolgz.exe
    kdztoiatpgobahpyolgz.exe
    1⤵
    • Executes dropped EXE
    PID:4716

Network

        MITRE ATT&CK Enterprise v16

        Reconnaissance

        Resource Development

        Initial Access

        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

        Collection

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

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        Downloads

        dhxvuubpnrh.exe
        • Path C:\Users\Admin\AppData\Local\Temp\dhxvuubpnrh.exe
        • Size 320KB
        • SHA256 b5643a7d0fe6085506e23f0f7a8ffdd41f0cb91aef9c4348dd724a5f743be5b9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        zdkpv.exe
        • Path C:\Users\Admin\AppData\Local\Temp\zdkpv.exe
        • Size 704KB
        • SHA256 1a774db1d0c7701b6aa2158dbdd1662485fe305f171feed77ea115964758f380
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        bzazzyvtuqdvzlymhjjhi.hgd
        • Path C:\Users\Admin\AppData\Local\bzazzyvtuqdvzlymhjjhi.hgd
        • Size 272B
        • SHA256 06c595b4e1c0cf4f0e566da12b8cef807a2c9b0872608ac33a3e28b84ea3fe68
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        wfrbmwenzgehwtrqwjudpzkuclxecfur.ouh
        • Path C:\Users\Admin\AppData\Local\wfrbmwenzgehwtrqwjudpzkuclxecfur.ouh
        • Size 3KB
        • SHA256 5a991ddd804646213205c0a1016f4797084c5b1efb575a25eed6cb3ddece8f07
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        mdxpiaqhbqwhejpwkf.exe
        • Path C:\Windows\SysWOW64\mdxpiaqhbqwhejpwkf.exe
        • Size 500KB
        • SHA256 4d47748d468183acadc83dd0e267884a78c808630e59ec2433f34cf06f5a6bb8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download