Overview

overview

10

Static

static

3

tmp8jd3xmj6.exe

windows10-ltsc_2021-x64

10

tmp8jd3xmj6.exe

windows10-2004-x64

10

tmp8jd3xmj6.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    02/06/2026, 02:34

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General

  • Target
    tmp8jd3xmj6.exe
  • Size 844KB
  • Sample260602-c2ncbsdt2p
  • SHA256 cfeb93cbbcbeb45a7ff2d54d8b79b31e0d23a09c8370c39fa104ced4205ce342
  • 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 8 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 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 9 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 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 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 40 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp8jd3xmj6.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp8jd3xmj6.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3956
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\users\admin\appdata\local\temp\tmp8jd3xmj6.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:4988
      • C:\Users\Admin\AppData\Local\Temp\uhowccs.exe
        "C:\Users\Admin\AppData\Local\Temp\uhowccs.exe" "-c:\users\admin\appdata\local\temp\tmp8jd3xmj6.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:4736
      • C:\Users\Admin\AppData\Local\Temp\uhowccs.exe
        "C:\Users\Admin\AppData\Local\Temp\uhowccs.exe" "-c:\users\admin\appdata\local\temp\tmp8jd3xmj6.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:4400
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\users\admin\appdata\local\temp\tmp8jd3xmj6.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:3572
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:2800
  • C:\Windows\axogwggrfzngkqdsr.exe
    axogwggrfzngkqdsr.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1832
  • C:\Windows\tpfwlutdqjworwiw.exe
    tpfwlutdqjworwiw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3932
  • C:\Users\Admin\AppData\Local\Temp\jhzsjuvhwrgafmaqqk.exe
    C:\Users\Admin\AppData\Local\Temp\jhzsjuvhwrgafmaqqk.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2920
  • C:\Windows\utmgykmzplbwckzqrmy.exe
    utmgykmzplbwckzqrmy.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:552
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\windows\utmgykmzplbwckzqrmy.exe*."
      2⤵
      • Executes dropped EXE
      PID:1736
  • C:\Windows\axogwggrfzngkqdsr.exe
    axogwggrfzngkqdsr.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:536
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\windows\axogwggrfzngkqdsr.exe*."
      2⤵
      • Executes dropped EXE
      PID:2248
  • C:\Users\Admin\AppData\Local\Temp\utmgykmzplbwckzqrmy.exe
    C:\Users\Admin\AppData\Local\Temp\utmgykmzplbwckzqrmy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4984
  • C:\Windows\wxsoiwaphfxucmdwzwklg.exe
    wxsoiwaphfxucmdwzwklg.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1816
  • C:\Windows\wxsoiwaphfxucmdwzwklg.exe
    wxsoiwaphfxucmdwzwklg.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:924
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\windows\wxsoiwaphfxucmdwzwklg.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:4944
  • C:\Windows\jhzsjuvhwrgafmaqqk.exe
    jhzsjuvhwrgafmaqqk.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5032
  • C:\Windows\hhbwpcftkhyubkasuqdd.exe
    hhbwpcftkhyubkasuqdd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:560
  • C:\Windows\tpfwlutdqjworwiw.exe
    tpfwlutdqjworwiw.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1916
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\windows\tpfwlutdqjworwiw.exe*."
      2⤵
      • Executes dropped EXE
      PID:1980
  • C:\Users\Admin\AppData\Local\Temp\tpfwlutdqjworwiw.exe
    C:\Users\Admin\AppData\Local\Temp\tpfwlutdqjworwiw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3872
  • C:\Windows\jhzsjuvhwrgafmaqqk.exe
    jhzsjuvhwrgafmaqqk.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1816
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\windows\jhzsjuvhwrgafmaqqk.exe*."
      2⤵
      • Executes dropped EXE
      PID:3516
  • C:\Windows\hhbwpcftkhyubkasuqdd.exe
    hhbwpcftkhyubkasuqdd.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3700
    • C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
      "C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe" "c:\windows\hhbwpcftkhyubkasuqdd.exe*."
      2⤵
      • Executes dropped EXE
      PID:212
  • C:\Users\Admin\AppData\Local\Temp\wxsoiwaphfxucmdwzwklg.exe
    C:\Users\Admin\AppData\Local\Temp\wxsoiwaphfxucmdwzwklg.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:912
  • C:\Users\Admin\AppData\Local\Temp\axogwggrfzngkqdsr.exe
    C:\Users\Admin\AppData\Local\Temp\axogwggrfzngkqdsr.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1788
  • C:\Users\Admin\AppData\Local\Temp\hhbwpcftkhyubkasuqdd.exe
    C:\Users\Admin\AppData\Local\Temp\hhbwpcftkhyubkasuqdd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2516
  • C:\Windows\utmgykmzplbwckzqrmy.exe
    utmgykmzplbwckzqrmy.exe
    1⤵
    • Executes dropped EXE
    PID:3264

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

        Loading Replay Monitor...

        Downloads

        yfgiicmhfjhkyolktwqxyaa.ezx
        • Path C:\Program Files (x86)\yfgiicmhfjhkyolktwqxyaa.ezx
        • Size 280B
        • SHA256 6d5cb9f11b28eef9434fc3c14f16f34ca58317bc9c20b702d9f045385f40f840
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        yfgiicmhfjhkyolktwqxyaa.ezx
        • Path C:\Program Files (x86)\yfgiicmhfjhkyolktwqxyaa.ezx
        • Size 280B
        • SHA256 e1bcdf663127744fa4b501a01551337091ca7acd049ca4887f17369566202b0a
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        yfgiicmhfjhkyolktwqxyaa.ezx
        • Path C:\Program Files (x86)\yfgiicmhfjhkyolktwqxyaa.ezx
        • Size 280B
        • SHA256 edf7c9d1f54bab388fa29d7a284fdeb27b8943aca5d33469340491e866a594cc
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        nayyfohuxki.exe
        • Path C:\Users\Admin\AppData\Local\Temp\nayyfohuxki.exe
        • Size 320KB
        • SHA256 965f0eaece8ee060ae95be2c8cd8d7ad43c85d2b7335259e7e1fcc5661187362
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        uhowccs.exe
        • Path C:\Users\Admin\AppData\Local\Temp\uhowccs.exe
        • Size 696KB
        • SHA256 5f685d2004d22e31ff0a2de738d9ef47e08925c67e87d751b05e5ab6d1fc9fc9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ldpcnsntcraonowgaotlxkvavbkziwvweo.wbt
        • Path C:\Users\Admin\AppData\Local\ldpcnsntcraonowgaotlxkvavbkziwvweo.wbt
        • Size 4KB
        • SHA256 ba06c3b5da6ac82fd038c1b8d03efcd65d2423ca9dfaff3ed6488eeb492488a3
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        yfgiicmhfjhkyolktwqxyaa.ezx
        • Path C:\Users\Admin\AppData\Local\yfgiicmhfjhkyolktwqxyaa.ezx
        • Size 280B
        • SHA256 e48f0e73a92effc20d31762a767d8d0f9004357ca7bf5130a4c914bdf646ae67
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        jhzsjuvhwrgafmaqqk.exe
        • Path C:\Windows\SysWOW64\jhzsjuvhwrgafmaqqk.exe
        • Size 844KB
        • SHA256 cfeb93cbbcbeb45a7ff2d54d8b79b31e0d23a09c8370c39fa104ced4205ce342
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ofqcmqkpxlt.bat
        • Path C:\ofqcmqkpxlt.bat
        • Size 548KB
        • SHA256 9119e48eea4cff0ca63502bf8d93ed49a889c681d1e00c0f3c161e14dee3a5ba
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/536-99-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/536-96-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/552-98-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/552-94-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/560-176-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/560-177-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/912-232-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/924-181-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/924-170-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/1788-239-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/1816-168-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/1816-231-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/1816-167-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/1816-235-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/1832-53-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/1916-179-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/1916-183-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/2516-241-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/2920-73-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/3264-243-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/3700-233-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/3700-237-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/3872-230-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/3932-56-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/3956-244-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/3956-0-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/4984-103-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download

        memory/5032-173-0x0000000000400000-0x00000000004D3000-memory.dmp
        Download