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
    150s
  • 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, 15:15

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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 35 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 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 17 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⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3656
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.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
      • 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:4048
      • C:\Users\Admin\AppData\Local\Temp\dhftv.exe
        "C:\Users\Admin\AppData\Local\Temp\dhftv.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 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:4368
      • C:\Users\Admin\AppData\Local\Temp\dhftv.exe
        "C:\Users\Admin\AppData\Local\Temp\dhftv.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 policy modification
        PID:1144
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.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:792
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:5568
  • C:\Windows\apyxkvsirkdamcnp.exe
    apyxkvsirkdamcnp.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1624
  • C:\Windows\btfhxlleqmiixqejuzf.exe
    btfhxlleqmiixqejuzf.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5656
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\btfhxlleqmiixqejuzf.exe*."
      2⤵
      • Executes dropped EXE
      PID:2676
  • C:\Windows\qhstivumxsnmasfjtx.exe
    qhstivumxsnmasfjtx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1692
  • C:\Users\Admin\AppData\Local\Temp\qhstivumxsnmasfjtx.exe
    C:\Users\Admin\AppData\Local\Temp\qhstivumxsnmasfjtx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5168
  • C:\Windows\hxhhvhfwgausfwilu.exe
    hxhhvhfwgausfwilu.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4068
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\hxhhvhfwgausfwilu.exe*."
      2⤵
      • Executes dropped EXE
      PID:5936
  • C:\Users\Admin\AppData\Local\Temp\btfhxlleqmiixqejuzf.exe
    C:\Users\Admin\AppData\Local\Temp\btfhxlleqmiixqejuzf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3560
  • C:\Windows\btfhxlleqmiixqejuzf.exe
    btfhxlleqmiixqejuzf.exe
    1⤵
    • Executes dropped EXE
    PID:2020
  • C:\Windows\hxhhvhfwgausfwilu.exe
    hxhhvhfwgausfwilu.exe
    1⤵
    • Executes dropped EXE
    PID:5116
  • C:\Windows\dxlphxzuigegxsipcjrlz.exe
    dxlphxzuigegxsipcjrlz.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3460
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\dxlphxzuigegxsipcjrlz.exe*."
      2⤵
      • Executes dropped EXE
      PID:4504
  • C:\Windows\ohuxodeylifgwqflxdkd.exe
    ohuxodeylifgwqflxdkd.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3216
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\ohuxodeylifgwqflxdkd.exe*."
      2⤵
      • Executes dropped EXE
      PID:4976
  • C:\Users\Admin\AppData\Local\Temp\dxlphxzuigegxsipcjrlz.exe
    C:\Users\Admin\AppData\Local\Temp\dxlphxzuigegxsipcjrlz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5320
  • C:\Windows\ohuxodeylifgwqflxdkd.exe
    ohuxodeylifgwqflxdkd.exe
    1⤵
    • Executes dropped EXE
    PID:5180
  • C:\Users\Admin\AppData\Local\Temp\apyxkvsirkdamcnp.exe
    C:\Users\Admin\AppData\Local\Temp\apyxkvsirkdamcnp.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:892
  • C:\Users\Admin\AppData\Local\Temp\ohuxodeylifgwqflxdkd.exe
    C:\Users\Admin\AppData\Local\Temp\ohuxodeylifgwqflxdkd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5080
  • C:\Users\Admin\AppData\Local\Temp\hxhhvhfwgausfwilu.exe
    C:\Users\Admin\AppData\Local\Temp\hxhhvhfwgausfwilu.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4956
  • C:\Windows\dxlphxzuigegxsipcjrlz.exe
    dxlphxzuigegxsipcjrlz.exe
    1⤵
    • Executes dropped EXE
    PID:5032
  • C:\Windows\apyxkvsirkdamcnp.exe
    apyxkvsirkdamcnp.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2620
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\apyxkvsirkdamcnp.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:3028
  • C:\Windows\qhstivumxsnmasfjtx.exe
    qhstivumxsnmasfjtx.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2776
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\qhstivumxsnmasfjtx.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:4988

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

        vfjdlrjuymaszkqnqnlvztbhzkocqipag.gdb
        • Path C:\Program Files (x86)\vfjdlrjuymaszkqnqnlvztbhzkocqipag.gdb
        • Size 3KB
        • SHA256 853a330b4480c95b3e751e6c0fbdc2e0dc1eb9719bd9ff3381bc3ac5b6b5f085
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        dhftv.exe
        • Path C:\Users\Admin\AppData\Local\Temp\dhftv.exe
        • Size 704KB
        • SHA256 7bf98879202fd07531402fc554c3b01861598e47fb5f6b801e5ed04b42e03655
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

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

        edwfcxeexadkggbnfredwf.xee
        • Path C:\Users\Admin\AppData\Local\edwfcxeexadkggbnfredwf.xee
        • Size 272B
        • SHA256 79eb2c8b1ed59ee621c022bffbca649ee9ddc4c1c7b32618fb03f628a466cb5c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

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