Overview

overview

10

Static

static

3

tmpd82z4k4a.exe

windows10-ltsc_2021-x64

10

tmpd82z4k4a.exe

windows10-2004-x64

10

tmpd82z4k4a.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • 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, 02:29

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General

  • Target
    tmpd82z4k4a.exe
  • Size 1016KB
  • Sample260602-cys4eaby8y
  • SHA256 6e34d3ea93f057a8e1e2d6ac7a99a55d84741f19ab4911d30948e6a347454b7c
  • 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 4 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 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 42 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpd82z4k4a.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpd82z4k4a.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1620
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\users\admin\appdata\local\temp\tmpd82z4k4a.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:5424
      • C:\Users\Admin\AppData\Local\Temp\htvhit.exe
        "C:\Users\Admin\AppData\Local\Temp\htvhit.exe" "-C:\Users\Admin\AppData\Local\Temp\tpbxidlbzjzhaohw.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:3640
      • C:\Users\Admin\AppData\Local\Temp\htvhit.exe
        "C:\Users\Admin\AppData\Local\Temp\htvhit.exe" "-C:\Users\Admin\AppData\Local\Temp\tpbxidlbzjzhaohw.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:4100
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\users\admin\appdata\local\temp\tmpd82z4k4a.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:472
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3044
  • C:\Windows\wxopffsnqfanlecwneklc.exe
    wxopffsnqfanlecwneklc.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4416
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\wxopffsnqfanlecwneklc.exe*."
      2⤵
      • Executes dropped EXE
      PID:3884
  • C:\Windows\jhvtgdnffrjtoezqes.exe
    jhvtgdnffrjtoezqes.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5012
  • C:\Windows\jhvtgdnffrjtoezqes.exe
    jhvtgdnffrjtoezqes.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5624
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\jhvtgdnffrjtoezqes.exe*."
      2⤵
      • Executes dropped EXE
      PID:3676
  • C:\Users\Admin\AppData\Local\Temp\utihvtexyleplcyqfuy.exe
    C:\Users\Admin\AppData\Local\Temp\utihvtexyleplcyqfuy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4984
  • C:\Users\Admin\AppData\Local\Temp\hhxxmlxrthbnkczsiydd.exe
    C:\Users\Admin\AppData\Local\Temp\hhxxmlxrthbnkczsiydd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1316
  • C:\Windows\hhxxmlxrthbnkczsiydd.exe
    hhxxmlxrthbnkczsiydd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1664
  • C:\Windows\axkhtpypozqzticsf.exe
    axkhtpypozqzticsf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4536
  • C:\Windows\hhxxmlxrthbnkczsiydd.exe
    hhxxmlxrthbnkczsiydd.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3908
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\hhxxmlxrthbnkczsiydd.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:5252
  • C:\Windows\wxopffsnqfanlecwneklc.exe
    wxopffsnqfanlecwneklc.exe
    1⤵
    • Executes dropped EXE
    PID:4196
  • C:\Users\Admin\AppData\Local\Temp\wxopffsnqfanlecwneklc.exe
    C:\Users\Admin\AppData\Local\Temp\wxopffsnqfanlecwneklc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3508
  • C:\Windows\axkhtpypozqzticsf.exe
    axkhtpypozqzticsf.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2584
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\axkhtpypozqzticsf.exe*."
      2⤵
      • Executes dropped EXE
      PID:4920
  • C:\Windows\utihvtexyleplcyqfuy.exe
    utihvtexyleplcyqfuy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3644
  • C:\Windows\utihvtexyleplcyqfuy.exe
    utihvtexyleplcyqfuy.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4564
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\utihvtexyleplcyqfuy.exe*."
      2⤵
      • Executes dropped EXE
      PID:1996
  • C:\Windows\tpbxidlbzjzhaohw.exe
    tpbxidlbzjzhaohw.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4812
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\tpbxidlbzjzhaohw.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:6076
  • C:\Users\Admin\AppData\Local\Temp\jhvtgdnffrjtoezqes.exe
    C:\Users\Admin\AppData\Local\Temp\jhvtgdnffrjtoezqes.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2244
  • C:\Users\Admin\AppData\Local\Temp\axkhtpypozqzticsf.exe
    C:\Users\Admin\AppData\Local\Temp\axkhtpypozqzticsf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3128
  • C:\Users\Admin\AppData\Local\Temp\tpbxidlbzjzhaohw.exe
    C:\Users\Admin\AppData\Local\Temp\tpbxidlbzjzhaohw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2368
  • C:\Windows\tpbxidlbzjzhaohw.exe
    tpbxidlbzjzhaohw.exe
    1⤵
    • Executes dropped EXE
    PID:5916

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

        bjhpmtnpzvxrwwbcayltrzwd.zjf
        • Path C:\Program Files (x86)\bjhpmtnpzvxrwwbcayltrzwd.zjf
        • Size 280B
        • SHA256 46e0caefb34510e830fea445a28553d716644c51175cd1debe2056ae3a23c75e
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        htvhit.exe
        • Path C:\Users\Admin\AppData\Local\Temp\htvhit.exe
        • Size 740KB
        • SHA256 bded401f6d5ba35d191e60e9e7ac07abea1dcb82f17917061cdff29bb371d44f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        qthqeovcadr.exe
        • Path C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
        • Size 320KB
        • SHA256 153ad30d739111462a1a2bb6bf8adef5dfbc4ddc70f9030a936af8b16ac3f28c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        bjhpmtnpzvxrwwbcayltrzwd.zjf
        • Path C:\Users\Admin\AppData\Local\bjhpmtnpzvxrwwbcayltrzwd.zjf
        • Size 280B
        • SHA256 2877c5a17c37b10969a53aa8580081c93442b1fe3d3f31f054acd213c84441a4
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        bjhpmtnpzvxrwwbcayltrzwd.zjf
        • Path C:\Users\Admin\AppData\Local\bjhpmtnpzvxrwwbcayltrzwd.zjf
        • Size 280B
        • SHA256 7529b8872fb841bab3a3982ef307b12bfec2a25373c848c663a31f70cf9a636c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        kdmfnfkxszmrhsiudmkdmfnfkxszmrhsiud.kdm
        • Path C:\Users\Admin\AppData\Local\kdmfnfkxszmrhsiudmkdmfnfkxszmrhsiud.kdm
        • Size 4KB
        • SHA256 5b832a098c50f611378600ee70ddb739108417d5a7af62bc0ebc4fd7ae67e328
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        jhvtgdnffrjtoezqes.exe
        • Path C:\Windows\SysWOW64\jhvtgdnffrjtoezqes.exe
        • Size 1016KB
        • SHA256 6e34d3ea93f057a8e1e2d6ac7a99a55d84741f19ab4911d30948e6a347454b7c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download