Overview

overview

10

Static

static

3

tmpm7x3fgr7.exe

windows10-ltsc_2021-x64

10

tmpm7x3fgr7.exe

windows10-2004-x64

10

tmpm7x3fgr7.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, 03:20

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General

  • Target
    tmpm7x3fgr7.exe
  • Size 564KB
  • Sample260602-dvqdsad13p
  • SHA256 83b1509fa21ce9a2c1e6d68b5d256f6bd1242809a7cec25c81b702aebbd85343
  • 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 7 IoCs
    persistence
  • UAC bypass 3 TTPs 16 IoCs
    defense_evasiontrojan
  • Adds policy Run key to start application 2 TTPs 38 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 14 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 53 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 53 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 9 IoCs
  • System policy modification 1 TTPs 44 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpm7x3fgr7.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpm7x3fgr7.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3624
    • C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe
      "C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe" "c:\users\admin\appdata\local\temp\tmpm7x3fgr7.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:3236
      • C:\Users\Admin\AppData\Local\Temp\chqoxll.exe
        "C:\Users\Admin\AppData\Local\Temp\chqoxll.exe" "-C:\Users\Admin\AppData\Local\Temp\bphogdmhyiwpsmkx.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:3216
      • C:\Users\Admin\AppData\Local\Temp\chqoxll.exe
        "C:\Users\Admin\AppData\Local\Temp\chqoxll.exe" "-C:\Users\Admin\AppData\Local\Temp\bphogdmhyiwpsmkx.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:1752
    • C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe
      "C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe" "c:\users\admin\appdata\local\temp\tmpm7x3fgr7.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:4940
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:4996
  • C:\Windows\ctoyttfdxkbxdabrdyg.exe
    ctoyttfdxkbxdabrdyg.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5108
  • C:\Windows\phdoklyxsgyvcactgcld.exe
    phdoklyxsgyvcactgcld.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1092
  • C:\Windows\rhbkedoleqgbgccrcw.exe
    rhbkedoleqgbgccrcw.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:428
    • C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe
      "C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe" "c:\windows\rhbkedoleqgbgccrcw.exe*."
      2⤵
      • Executes dropped EXE
      PID:764
  • C:\Windows\bphogdmhyiwpsmkx.exe
    bphogdmhyiwpsmkx.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4952
    • C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe
      "C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe" "c:\windows\bphogdmhyiwpsmkx.exe*."
      2⤵
      • Executes dropped EXE
      PID:240
  • C:\Users\Admin\AppData\Local\Temp\exugdfttpexvdcfxlisli.exe
    C:\Users\Admin\AppData\Local\Temp\exugdfttpexvdcfxlisli.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:944
  • C:\Users\Admin\AppData\Local\Temp\bphogdmhyiwpsmkx.exe
    C:\Users\Admin\AppData\Local\Temp\bphogdmhyiwpsmkx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4032
  • C:\Windows\ixqyrpzvnynhlgftd.exe
    ixqyrpzvnynhlgftd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1644
  • C:\Windows\bphogdmhyiwpsmkx.exe
    bphogdmhyiwpsmkx.exe
    1⤵
    • Executes dropped EXE
    PID:1676
  • C:\Windows\ctoyttfdxkbxdabrdyg.exe
    ctoyttfdxkbxdabrdyg.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4852
    • C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe
      "C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe" "c:\windows\ctoyttfdxkbxdabrdyg.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:3212
  • C:\Users\Admin\AppData\Local\Temp\rhbkedoleqgbgccrcw.exe
    C:\Users\Admin\AppData\Local\Temp\rhbkedoleqgbgccrcw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4964
  • C:\Users\Admin\AppData\Local\Temp\phdoklyxsgyvcactgcld.exe
    C:\Users\Admin\AppData\Local\Temp\phdoklyxsgyvcactgcld.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1944
  • C:\Users\Admin\AppData\Local\Temp\ixqyrpzvnynhlgftd.exe
    C:\Users\Admin\AppData\Local\Temp\ixqyrpzvnynhlgftd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:996
  • C:\Windows\phdoklyxsgyvcactgcld.exe
    phdoklyxsgyvcactgcld.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4148
    • C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe
      "C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe" "c:\windows\phdoklyxsgyvcactgcld.exe*."
      2⤵
      • Executes dropped EXE
      PID:3200
  • C:\Windows\rhbkedoleqgbgccrcw.exe
    rhbkedoleqgbgccrcw.exe
    1⤵
    • Executes dropped EXE
    PID:2728
  • C:\Windows\ixqyrpzvnynhlgftd.exe
    ixqyrpzvnynhlgftd.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2440
    • C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe
      "C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe" "c:\windows\ixqyrpzvnynhlgftd.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:1744
  • C:\Users\Admin\AppData\Local\Temp\ctoyttfdxkbxdabrdyg.exe
    C:\Users\Admin\AppData\Local\Temp\ctoyttfdxkbxdabrdyg.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1708
  • C:\Windows\exugdfttpexvdcfxlisli.exe
    exugdfttpexvdcfxlisli.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1644
    • C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe
      "C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe" "c:\windows\exugdfttpexvdcfxlisli.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:2824
  • C:\Windows\exugdfttpexvdcfxlisli.exe
    exugdfttpexvdcfxlisli.exe
    1⤵
    • Executes dropped EXE
    PID:2168

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

        Loading Replay Monitor...

        Downloads

        vxdyepmvayahygstqwprxsyjgp.sub
        • Path C:\Program Files (x86)\vxdyepmvayahygstqwprxsyjgp.sub
        • Size 280B
        • SHA256 4cea53d0c479690a0194faf99fd64d371750d9eeea01797de419f9859b5e2405
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        vxdyepmvayahygstqwprxsyjgp.sub
        • Path C:\Program Files (x86)\vxdyepmvayahygstqwprxsyjgp.sub
        • Size 280B
        • SHA256 9ca99412c6d8fd411d88cf655c46cff6e35bdf46e2477852e1328942986449e2
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        vxdyepmvayahygstqwprxsyjgp.sub
        • Path C:\Program Files (x86)\vxdyepmvayahygstqwprxsyjgp.sub
        • Size 280B
        • SHA256 f7090ba8419c1d2c4c8a01a90085f374679ee97b163ae809703af09f118be45a
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        vxdyepmvayahygstqwprxsyjgp.sub
        • Path C:\Program Files (x86)\vxdyepmvayahygstqwprxsyjgp.sub
        • Size 280B
        • SHA256 256c0f41c1f24c0af194cbbe451ac533a2d329d23f4505ca59850c826e8635d1
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        vxdyepmvayahygstqwprxsyjgp.sub
        • Path C:\Program Files (x86)\vxdyepmvayahygstqwprxsyjgp.sub
        • Size 280B
        • SHA256 57a2ef183aa34e81ab4792ce06f68ee350d21ef226b01e73089fcf003dee38f2
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        chqoxll.exe
        • Path C:\Users\Admin\AppData\Local\Temp\chqoxll.exe
        • Size 708KB
        • SHA256 e150f133f0ec2d4939399c1415b17c7e9e73584cbe68ccce9923e8e4547650cd
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        nbzohptgxlj.exe
        • Path C:\Users\Admin\AppData\Local\Temp\nbzohptgxlj.exe
        • Size 320KB
        • SHA256 69c674d2957ccd463ce44b11919a6b8ac1d0c46c4742a6e2505eb79309b277ad
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        vxdyepmvayahygstqwprxsyjgp.sub
        • Path C:\Users\Admin\AppData\Local\vxdyepmvayahygstqwprxsyjgp.sub
        • Size 280B
        • SHA256 1903e99c35b6cba7f37da454bae9798e41d2d77d2385b050f4d05f669caa136c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        wjagxtbvluhzburdlcgtkqhdlfverjlebnvmq.uar
        • Path C:\Users\Admin\AppData\Local\wjagxtbvluhzburdlcgtkqhdlfverjlebnvmq.uar
        • Size 4KB
        • SHA256 e65a2e8d8878fe76c231abd70ff6d1fc7a0b0ef1bac924a4ff20413e9072a68f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        rhbkedoleqgbgccrcw.exe
        • Path C:\Windows\SysWOW64\rhbkedoleqgbgccrcw.exe
        • Size 564KB
        • SHA256 83b1509fa21ce9a2c1e6d68b5d256f6bd1242809a7cec25c81b702aebbd85343
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        rxhgqfgt.bat
        • Path C:\rxhgqfgt.bat
        • Size 644KB
        • SHA256 fef9b5a38e307bd51f2071535c89309e2b7f6f56f9f36a20fcc3b6b2d578ea0c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download