Overview

overview

10

Static

static

3

tmpoin6zd0r.exe

windows10-ltsc_2021-x64

10

tmpoin6zd0r.exe

windows10-2004-x64

10

tmpoin6zd0r.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    22/05/2026, 15:08

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General

  • Target
    tmpoin6zd0r.exe
  • Size 832KB
  • Sample260522-sjdceae16p
  • SHA256 7be6ccadfe39aff45029a30fe34b3c87ac49ebbad791c34e2ff8bb30e7e07721
  • 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 6 IoCs
    persistence
  • UAC bypass 3 TTPs 15 IoCs
    defense_evasiontrojan
  • Adds policy Run key to start application 2 TTPs 35 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 12 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 7 IoCs

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

  • Drops file in System32 directory 46 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 46 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 42 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpoin6zd0r.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpoin6zd0r.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4548
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\users\admin\appdata\local\temp\tmpoin6zd0r.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:956
      • C:\Users\Admin\AppData\Local\Temp\vbmqdlq.exe
        "C:\Users\Admin\AppData\Local\Temp\vbmqdlq.exe" "-C:\Users\Admin\AppData\Local\Temp\ujdqmdrerkivznvz.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:1020
      • C:\Users\Admin\AppData\Local\Temp\vbmqdlq.exe
        "C:\Users\Admin\AppData\Local\Temp\vbmqdlq.exe" "-C:\Users\Admin\AppData\Local\Temp\ujdqmdrerkivznvz.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:2604
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\users\admin\appdata\local\temp\tmpoin6zd0r.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:3604
  • C:\Users\Admin\AppData\Local\Temp\ujdqmdrerkivznvz.exe
    C:\Users\Admin\AppData\Local\Temp\ujdqmdrerkivznvz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2276
  • C:\Windows\ibzqqldulikbjbnvewex.exe
    ibzqqldulikbjbnvewex.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4204
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\ibzqqldulikbjbnvewex.exe*."
      2⤵
      • Executes dropped EXE
      PID:1848
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:4144
  • C:\Windows\vnkaztkaqmndkbmtbsz.exe
    vnkaztkaqmndkbmtbsz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4528
  • C:\Windows\brmaxpesgaznshqvb.exe
    brmaxpesgaznshqvb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2108
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\brmaxpesgaznshqvb.exe*."
      2⤵
      • Executes dropped EXE
      PID:1576
  • C:\Users\Admin\AppData\Local\Temp\vnkaztkaqmndkbmtbsz.exe
    C:\Users\Admin\AppData\Local\Temp\vnkaztkaqmndkbmtbsz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2496
  • C:\Windows\ujdqmdrerkivznvz.exe
    ujdqmdrerkivznvz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3264
  • C:\Windows\brmaxpesgaznshqvb.exe
    brmaxpesgaznshqvb.exe
    1⤵
    • Executes dropped EXE
    PID:1656
  • C:\Windows\vnkaztkaqmndkbmtbsz.exe
    vnkaztkaqmndkbmtbsz.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2072
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\vnkaztkaqmndkbmtbsz.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:4624
  • C:\Windows\kbxmkdtixsshndntaq.exe
    kbxmkdtixsshndntaq.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3036
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\kbxmkdtixsshndntaq.exe*."
      2⤵
      • Executes dropped EXE
      PID:4584
  • C:\Windows\xrqijfyqigjbkdqzjclfe.exe
    xrqijfyqigjbkdqzjclfe.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2452
  • C:\Users\Admin\AppData\Local\Temp\ibzqqldulikbjbnvewex.exe
    C:\Users\Admin\AppData\Local\Temp\ibzqqldulikbjbnvewex.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1848
  • C:\Windows\kbxmkdtixsshndntaq.exe
    kbxmkdtixsshndntaq.exe
    1⤵
    • Executes dropped EXE
    PID:2672
  • C:\Windows\ibzqqldulikbjbnvewex.exe
    ibzqqldulikbjbnvewex.exe
    1⤵
    • Executes dropped EXE
    PID:1380
  • C:\Windows\ujdqmdrerkivznvz.exe
    ujdqmdrerkivznvz.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1256
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\ujdqmdrerkivznvz.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:2696
  • C:\Windows\xrqijfyqigjbkdqzjclfe.exe
    xrqijfyqigjbkdqzjclfe.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2088
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\xrqijfyqigjbkdqzjclfe.exe*."
      2⤵
      • Executes dropped EXE
      PID:3764
  • C:\Users\Admin\AppData\Local\Temp\brmaxpesgaznshqvb.exe
    C:\Users\Admin\AppData\Local\Temp\brmaxpesgaznshqvb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1468
  • C:\Users\Admin\AppData\Local\Temp\xrqijfyqigjbkdqzjclfe.exe
    C:\Users\Admin\AppData\Local\Temp\xrqijfyqigjbkdqzjclfe.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1396
  • C:\Users\Admin\AppData\Local\Temp\kbxmkdtixsshndntaq.exe
    C:\Users\Admin\AppData\Local\Temp\kbxmkdtixsshndntaq.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4288

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

        Loading Replay Monitor...

        Downloads

        vbmqdlq.exe
        • Path C:\Users\Admin\AppData\Local\Temp\vbmqdlq.exe
        • Size 716KB
        • SHA256 ccd849b5aec9032a04bf7aaaa7bcb9a3060d985dbf0422a9ceac81b31db4498e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        zhgpsrrajrq.exe
        • Path C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
        • Size 320KB
        • SHA256 c8c542ac3f6526d1501c2b9d6262bfa029a1ac0d9dd6b3c1965977abdd8bd126
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        orzakprstamnfhdvoqiltuejlm.ugh
        • Path C:\Users\Admin\AppData\Local\orzakprstamnfhdvoqiltuejlm.ugh
        • Size 272B
        • SHA256 60711f526fbe87c81ac1ab7f196c241e50a800bcde3ff358b1bea23076807fa4
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        pdwidtgsewtfivcfjwzngsndqcogdpsfmptgj.qcx
        • Path C:\Users\Admin\AppData\Local\pdwidtgsewtfivcfjwzngsndqcogdpsfmptgj.qcx
        • Size 3KB
        • SHA256 da6356b95f7b9e6bac3a85e40677b021cb067ef2697ea77844415d8c474ada14
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        kbxmkdtixsshndntaq.exe
        • Path C:\Windows\SysWOW64\kbxmkdtixsshndntaq.exe
        • Size 832KB
        • SHA256 7be6ccadfe39aff45029a30fe34b3c87ac49ebbad791c34e2ff8bb30e7e07721
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download