Overview

overview

10

Static

static

3

tmp46xqwywk.exe

windows10-2004-x64

10

tmp46xqwywk.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    22/05/2026, 15:15

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General

  • Target
    tmp46xqwywk.exe
  • Size 472KB
  • Sample260522-smy4aaft4l
  • SHA256 a667e8a91cbf3fb5b36ba4f31982e8315cd391968abb73bc038b4398b2693ffb
  • 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 34 IoCs
    persistence
  • Disables RegEdit via registry modification 9 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 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 8 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 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 20 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\tmp46xqwywk.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp46xqwywk.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4224
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\users\admin\appdata\local\temp\tmp46xqwywk.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:1824
      • C:\Users\Admin\AppData\Local\Temp\zcgtx.exe
        "C:\Users\Admin\AppData\Local\Temp\zcgtx.exe" "-c:\users\admin\appdata\local\temp\tmp46xqwywk.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:1828
      • C:\Users\Admin\AppData\Local\Temp\zcgtx.exe
        "C:\Users\Admin\AppData\Local\Temp\zcgtx.exe" "-c:\users\admin\appdata\local\temp\tmp46xqwywk.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:4944
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\users\admin\appdata\local\temp\tmp46xqwywk.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
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:3300
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:5092
  • C:\Users\Admin\AppData\Local\Temp\dsihxmbrmzlyiibuk.exe
    C:\Users\Admin\AppData\Local\Temp\dsihxmbrmzlyiibuk.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1616
  • C:\Windows\zsmpjcvpofvmaebysinga.exe
    zsmpjcvpofvmaebysinga.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4684
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\zsmpjcvpofvmaebysinga.exe*."
      2⤵
      • Executes dropped EXE
      PID:5076
  • C:\Windows\dsihxmbrmzlyiibuk.exe
    dsihxmbrmzlyiibuk.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4148
  • C:\Users\Admin\AppData\Local\Temp\zsmpjcvpofvmaebysinga.exe
    C:\Users\Admin\AppData\Local\Temp\zsmpjcvpofvmaebysinga.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1916
  • C:\Windows\mcttkaqhdresdeysjw.exe
    mcttkaqhdresdeysjw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3536
  • C:\Users\Admin\AppData\Local\Temp\kcvxqiatrhwmzcyuncgy.exe
    C:\Users\Admin\AppData\Local\Temp\kcvxqiatrhwmzcyuncgy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4728
  • C:\Users\Admin\AppData\Local\Temp\wkzxmaodxjugpogy.exe
    C:\Users\Admin\AppData\Local\Temp\wkzxmaodxjugpogy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4492
  • C:\Windows\kcvxqiatrhwmzcyuncgy.exe
    kcvxqiatrhwmzcyuncgy.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4004
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\kcvxqiatrhwmzcyuncgy.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
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:4336
  • C:\Windows\zsmpjcvpofvmaebysinga.exe
    zsmpjcvpofvmaebysinga.exe
    1⤵
    • Executes dropped EXE
    PID:4804
  • C:\Windows\wkzxmaodxjugpogy.exe
    wkzxmaodxjugpogy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1820
  • C:\Windows\dsihxmbrmzlyiibuk.exe
    dsihxmbrmzlyiibuk.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2548
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\dsihxmbrmzlyiibuk.exe*."
      2⤵
      • Executes dropped EXE
      PID:1836
  • C:\Windows\wkzxmaodxjugpogy.exe
    wkzxmaodxjugpogy.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5008
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\wkzxmaodxjugpogy.exe*."
      2⤵
      • Executes dropped EXE
      PID:3448
  • C:\Users\Admin\AppData\Local\Temp\mcttkaqhdresdeysjw.exe
    C:\Users\Admin\AppData\Local\Temp\mcttkaqhdresdeysjw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2480
  • C:\Users\Admin\AppData\Local\Temp\xoghzqhzwlzoacxskyb.exe
    C:\Users\Admin\AppData\Local\Temp\xoghzqhzwlzoacxskyb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4104
  • C:\Windows\xoghzqhzwlzoacxskyb.exe
    xoghzqhzwlzoacxskyb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3952
  • C:\Windows\mcttkaqhdresdeysjw.exe
    mcttkaqhdresdeysjw.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4088
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\mcttkaqhdresdeysjw.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
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:4060
  • C:\Windows\xoghzqhzwlzoacxskyb.exe
    xoghzqhzwlzoacxskyb.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4924
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\xoghzqhzwlzoacxskyb.exe*."
      2⤵
      • Executes dropped EXE
      PID:1252
  • C:\Windows\kcvxqiatrhwmzcyuncgy.exe
    kcvxqiatrhwmzcyuncgy.exe
    1⤵
    • Executes dropped EXE
    PID:1116

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

        zcgtxadhqrrsqelswwlosfjmptc.dec
        • Path C:\Program Files (x86)\zcgtxadhqrrsqelswwlosfjmptc.dec
        • Size 272B
        • SHA256 7f93fef2218265f75cc55ab64c777d0d54f15394b1f84ecba05c1523b9ebebd1
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zcgtxadhqrrsqelswwlosfjmptc.dec
        • Path C:\Program Files (x86)\zcgtxadhqrrsqelswwlosfjmptc.dec
        • Size 272B
        • SHA256 11d0004627dbb99c5e512f631111df956e0eaba056889186d3ff48be2520d3b8
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zcgtxadhqrrsqelswwlosfjmptc.dec
        • Path C:\Program Files (x86)\zcgtxadhqrrsqelswwlosfjmptc.dec
        • Size 272B
        • SHA256 37b59be9b03d5023ca261d11ff1b427dadcf5b94cc4d53e06f37d4593c1da310
        • MD5 SHA1 SHA512 TLSH
        Submit Download

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

        zcgtx.exe
        • Path C:\Users\Admin\AppData\Local\Temp\zcgtx.exe
        • Size 724KB
        • SHA256 fe45f7566443f7c29b69dcdb3f86157782cd816b0f79ab47186cc856a5574b19
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        wkzxmaodxjugpogynyymbzocqfzlwirqiapaao.bqe
        • Path C:\Users\Admin\AppData\Local\wkzxmaodxjugpogynyymbzocqfzlwirqiapaao.bqe
        • Size 3KB
        • SHA256 1fba8f3515808cac0b101ec6f646ac4841198627ef58e9121a99d9d1e24b2a87
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zcgtxadhqrrsqelswwlosfjmptc.dec
        • Path C:\Users\Admin\AppData\Local\zcgtxadhqrrsqelswwlosfjmptc.dec
        • Size 272B
        • SHA256 de0eaf51b76950b63687532e7f52fbc7aecb38f54a85256affca528074f1a68e
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        mcttkaqhdresdeysjw.exe
        • Path C:\Windows\SysWOW64\mcttkaqhdresdeysjw.exe
        • Size 472KB
        • SHA256 a667e8a91cbf3fb5b36ba4f31982e8315cd391968abb73bc038b4398b2693ffb
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        mszpwcip.bat
        • Path C:\mszpwcip.bat
        • Size 556KB
        • SHA256 a62e6b1265af382a0a5026fa1f2af8fb7b523209f0f2c4ce4f36ffd2b7bbd56f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download