Overview

overview

10

Static

static

3

tmpkkh4rwcm.exe

windows10-ltsc_2021-x64

10

tmpkkh4rwcm.exe

windows10-2004-x64

10

tmpkkh4rwcm.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • 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, 03:24

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General

  • Target
    tmpkkh4rwcm.exe
  • Size 532KB
  • Sample260602-dx183acy31
  • SHA256 4579fb72623b0b912926a83c720918ec4ec1ad8a14a1aadc02b5bef3fb138f15
  • 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
  • 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 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 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\tmpkkh4rwcm.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpkkh4rwcm.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4868
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\users\admin\appdata\local\temp\tmpkkh4rwcm.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:5284
      • C:\Users\Admin\AppData\Local\Temp\xeosado.exe
        "C:\Users\Admin\AppData\Local\Temp\xeosado.exe" "-c:\users\admin\appdata\local\temp\tmpkkh4rwcm.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:5304
      • C:\Users\Admin\AppData\Local\Temp\xeosado.exe
        "C:\Users\Admin\AppData\Local\Temp\xeosado.exe" "-c:\users\admin\appdata\local\temp\tmpkkh4rwcm.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:5280
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\users\admin\appdata\local\temp\tmpkkh4rwcm.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:1180
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:992
  • C:\Windows\mezohvricrlazauqpb.exe
    mezohvricrlazauqpb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3708
  • C:\Windows\zuskgxwqnfcuwaxwynnig.exe
    zuskgxwqnfcuwaxwynnig.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5864
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\zuskgxwqnfcuwaxwynnig.exe*."
      2⤵
      • Executes dropped EXE
      PID:3772
  • C:\Windows\kebsndbuqhduvyusthga.exe
    kebsndbuqhduvyusthga.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5272
  • C:\Users\Admin\AppData\Local\Temp\duocuhcslzsgeexsq.exe
    C:\Users\Admin\AppData\Local\Temp\duocuhcslzsgeexsq.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5400
  • C:\Users\Admin\AppData\Local\Temp\wmfsjvpewjbolkcw.exe
    C:\Users\Admin\AppData\Local\Temp\wmfsjvpewjbolkcw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3296
  • C:\Windows\wmfsjvpewjbolkcw.exe
    wmfsjvpewjbolkcw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2100
  • C:\Windows\xqmcwliavlgwwytqqdb.exe
    xqmcwliavlgwwytqqdb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4588
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\xqmcwliavlgwwytqqdb.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:4020
  • C:\Windows\zuskgxwqnfcuwaxwynnig.exe
    zuskgxwqnfcuwaxwynnig.exe
    1⤵
    • Executes dropped EXE
    PID:3148
  • C:\Users\Admin\AppData\Local\Temp\xqmcwliavlgwwytqqdb.exe
    C:\Users\Admin\AppData\Local\Temp\xqmcwliavlgwwytqqdb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1348
  • C:\Windows\duocuhcslzsgeexsq.exe
    duocuhcslzsgeexsq.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:240
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\duocuhcslzsgeexsq.exe*."
      2⤵
      • Executes dropped EXE
      PID:4696
  • C:\Windows\xqmcwliavlgwwytqqdb.exe
    xqmcwliavlgwwytqqdb.exe
    1⤵
    • Executes dropped EXE
    PID:5812
  • C:\Users\Admin\AppData\Local\Temp\kebsndbuqhduvyusthga.exe
    C:\Users\Admin\AppData\Local\Temp\kebsndbuqhduvyusthga.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2716
  • C:\Windows\duocuhcslzsgeexsq.exe
    duocuhcslzsgeexsq.exe
    1⤵
    • Executes dropped EXE
    PID:5036
  • C:\Windows\wmfsjvpewjbolkcw.exe
    wmfsjvpewjbolkcw.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5436
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\wmfsjvpewjbolkcw.exe*."
      2⤵
      • Executes dropped EXE
      PID:4180
  • C:\Users\Admin\AppData\Local\Temp\mezohvricrlazauqpb.exe
    C:\Users\Admin\AppData\Local\Temp\mezohvricrlazauqpb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2520
  • C:\Windows\kebsndbuqhduvyusthga.exe
    kebsndbuqhduvyusthga.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5924
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\kebsndbuqhduvyusthga.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:1164
  • C:\Windows\mezohvricrlazauqpb.exe
    mezohvricrlazauqpb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:560
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\mezohvricrlazauqpb.exe*."
      2⤵
      • Executes dropped EXE
      PID:5844
  • C:\Users\Admin\AppData\Local\Temp\zuskgxwqnfcuwaxwynnig.exe
    C:\Users\Admin\AppData\Local\Temp\zuskgxwqnfcuwaxwynnig.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3448

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

        zemouveipryamahqcblqyaghqub.kmy
        • Path C:\Program Files (x86)\zemouveipryamahqcblqyaghqub.kmy
        • Size 272B
        • SHA256 38476b9ff1bc605d9235746f7a8575ff592c18e9b9e9e24046b6cb95fd401dd8
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zemouveipryamahqcblqyaghqub.kmy
        • Path C:\Program Files (x86)\zemouveipryamahqcblqyaghqub.kmy
        • Size 272B
        • SHA256 adeab1d88ccdd6a0fe59801e6b05f9fbb0379cec5509d76278a067c7419261aa
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zemouveipryamahqcblqyaghqub.kmy
        • Path C:\Program Files (x86)\zemouveipryamahqcblqyaghqub.kmy
        • Size 272B
        • SHA256 bb0c54ba79a02b9f3b2ee1d6873974df4960ea0ed6eb83bb6dc2b4a5130a8d0d
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zemouveipryamahqcblqyaghqub.kmy
        • Path C:\Program Files (x86)\zemouveipryamahqcblqyaghqub.kmy
        • Size 272B
        • SHA256 f5dd719086b53957ba5653b8ec2052c411340908d3bab9554eedd044813c4a58
        • MD5 SHA1 SHA512 TLSH
        Submit Download

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

        xeosado.exe
        • Path C:\Users\Admin\AppData\Local\Temp\xeosado.exe
        • Size 708KB
        • SHA256 165aa44ff7e59dae5e00d89d7a57a7911346145d4c96bed0fb0c6c8ca4fa634c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        wmfsjvpewjbolkcwtdyohulxrgyldqnmeyvfaq.wnz
        • Path C:\Users\Admin\AppData\Local\wmfsjvpewjbolkcwtdyohulxrgyldqnmeyvfaq.wnz
        • Size 3KB
        • SHA256 850271dfba27eade66c1f5eb3d7e33ab98d46dcee323277d873fc79eb395bcf7
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zemouveipryamahqcblqyaghqub.kmy
        • Path C:\Users\Admin\AppData\Local\zemouveipryamahqcblqyaghqub.kmy
        • Size 272B
        • SHA256 4ba563d27480eec2cea993a3a75b0c22af994250a9468977fc534a2db997e768
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zemouveipryamahqcblqyaghqub.kmy
        • Path C:\Users\Admin\AppData\Local\zemouveipryamahqcblqyaghqub.kmy
        • Size 272B
        • SHA256 908965768a88db45deaeca1c79e2cbb2c6c5a5e4d9305177aefa037d6cdcb44d
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        mezohvricrlazauqpb.exe
        • Path C:\Windows\SysWOW64\mezohvricrlazauqpb.exe
        • Size 532KB
        • SHA256 4579fb72623b0b912926a83c720918ec4ec1ad8a14a1aadc02b5bef3fb138f15
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        zemouveipryamahqcblqyaghqub.kmy
        • Path C:\Windows\SysWOW64\zemouveipryamahqcblqyaghqub.kmy
        • Size 272B
        • SHA256 fabedf3c931e0d62eba33de5cfd5b4e26792fef31ce830fb9928326a0ae385c2
        • MD5 SHA1 SHA512 TLSH
        Submit Download