Overview

overview

10

Static

static

3

tmpmyqvvmy6.exe

windows10-ltsc_2021-x64

10

tmpmyqvvmy6.exe

windows10-2004-x64

10

tmpmyqvvmy6.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    02/06/2026, 03:58

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    tmpmyqvvmy6.exe
  • Size 600KB
  • Sample260602-ejnw9adv4x
  • SHA256 fab208d4fde711f95e4da7fdfe3d7855f866bd2f367570aac74320952291faa1
  • 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 32 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 7 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 8 IoCs

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

  • 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 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 40 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpmyqvvmy6.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpmyqvvmy6.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4648
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\users\admin\appdata\local\temp\tmpmyqvvmy6.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:1348
      • C:\Users\Admin\AppData\Local\Temp\zequbll.exe
        "C:\Users\Admin\AppData\Local\Temp\zequbll.exe" "-C:\Users\Admin\AppData\Local\Temp\ymhukdmewlumzdhw.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 Location Discovery: System Language Discovery
        • System policy modification
        PID:1324
      • C:\Users\Admin\AppData\Local\Temp\zequbll.exe
        "C:\Users\Admin\AppData\Local\Temp\zequbll.exe" "-C:\Users\Admin\AppData\Local\Temp\ymhukdmewlumzdhw.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:3912
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\users\admin\appdata\local\temp\tmpmyqvvmy6.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:2584
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:4456
  • C:\Windows\buumhftqnhvsktcwtunnf.exe
    buumhftqnhvsktcwtunnf.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5584
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\windows\buumhftqnhvsktcwtunnf.exe*."
      2⤵
      • Executes dropped EXE
      PID:320
  • C:\Windows\ymhukdmewlumzdhw.exe
    ymhukdmewlumzdhw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2088
  • C:\Windows\zqoextfavnzukryqlkb.exe
    zqoextfavnzukryqlkb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1012
  • C:\Users\Admin\AppData\Local\Temp\meduolyuqjwsjrzsoogf.exe
    C:\Users\Admin\AppData\Local\Temp\meduolyuqjwsjrzsoogf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2468
  • C:\Users\Admin\AppData\Local\Temp\oebqidoicteyntzqki.exe
    C:\Users\Admin\AppData\Local\Temp\oebqidoicteyntzqki.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5380
  • C:\Windows\oebqidoicteyntzqki.exe
    oebqidoicteyntzqki.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2564
  • C:\Windows\oebqidoicteyntzqki.exe
    oebqidoicteyntzqki.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4224
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\windows\oebqidoicteyntzqki.exe*."
      2⤵
      • Executes dropped EXE
      PID:3240
  • C:\Windows\zqoextfavnzukryqlkb.exe
    zqoextfavnzukryqlkb.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2168
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\windows\zqoextfavnzukryqlkb.exe*."
      2⤵
      • Executes dropped EXE
      PID:6108
  • C:\Windows\meduolyuqjwsjrzsoogf.exe
    meduolyuqjwsjrzsoogf.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4028
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\windows\meduolyuqjwsjrzsoogf.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:1832
  • C:\Users\Admin\AppData\Local\Temp\ymhukdmewlumzdhw.exe
    C:\Users\Admin\AppData\Local\Temp\ymhukdmewlumzdhw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2832
  • C:\Windows\meduolyuqjwsjrzsoogf.exe
    meduolyuqjwsjrzsoogf.exe
    1⤵
    • Executes dropped EXE
    PID:1720
  • C:\Windows\fuqevpzslblesxcsl.exe
    fuqevpzslblesxcsl.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5440
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\windows\fuqevpzslblesxcsl.exe*."
      2⤵
      • Executes dropped EXE
      PID:4236
  • C:\Windows\ymhukdmewlumzdhw.exe
    ymhukdmewlumzdhw.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4788
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\windows\ymhukdmewlumzdhw.exe*."
      2⤵
      • Executes dropped EXE
      PID:4784
  • C:\Users\Admin\AppData\Local\Temp\fuqevpzslblesxcsl.exe
    C:\Users\Admin\AppData\Local\Temp\fuqevpzslblesxcsl.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4824
  • C:\Users\Admin\AppData\Local\Temp\zqoextfavnzukryqlkb.exe
    C:\Users\Admin\AppData\Local\Temp\zqoextfavnzukryqlkb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2360
  • C:\Users\Admin\AppData\Local\Temp\buumhftqnhvsktcwtunnf.exe
    C:\Users\Admin\AppData\Local\Temp\buumhftqnhvsktcwtunnf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3732
  • C:\Windows\fuqevpzslblesxcsl.exe
    fuqevpzslblesxcsl.exe
    1⤵
    • Executes dropped EXE
    PID:3988
  • C:\Windows\buumhftqnhvsktcwtunnf.exe
    buumhftqnhvsktcwtunnf.exe
    1⤵
    • Executes dropped EXE
    PID:2412

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

        Query Registry

        1
        T1012

        System Information Discovery

        3
        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

        swjrqpzmcgt.exe
        • Path C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
        • Size 320KB
        • SHA256 0cc02d34d5fd4cf892fed282f98c1ad3e7dd6159a8877ae5c46d3f834ed36060
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        zequbll.exe
        • Path C:\Users\Admin\AppData\Local\Temp\zequbll.exe
        • Size 716KB
        • SHA256 2a935acd0c463153434028afb059ff7e5294b1a4a1c6ab7abafb2123cb26dea8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ggnmotoswxswvlbcgoovuwbw.efa
        • Path C:\Users\Admin\AppData\Local\ggnmotoswxswvlbcgoovuwbw.efa
        • Size 272B
        • SHA256 c1d3fb88ef3a3c28ad5b0f26e9309e257e5d53865c42ad2e32c291cb1a9d6a8f
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        pascpflapbhwghiujcnfpcsyncoujtuvhwp.scp
        • Path C:\Users\Admin\AppData\Local\pascpflapbhwghiujcnfpcsyncoujtuvhwp.scp
        • Size 3KB
        • SHA256 9cf36f06a7d70a42800a782f8ade6546ac66ae34db46c260fdc8feee5137a5ea
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        oebqidoicteyntzqki.exe
        • Path C:\Windows\SysWOW64\oebqidoicteyntzqki.exe
        • Size 600KB
        • SHA256 fab208d4fde711f95e4da7fdfe3d7855f866bd2f367570aac74320952291faa1
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download