Overview

overview

10

Static

static

3

tmp385d_ntg.exe

windows10-ltsc_2021-x64

10

tmp385d_ntg.exe

windows10-2004-x64

10

tmp385d_ntg.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
    22/05/2026, 14:02

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General

  • Target
    tmp385d_ntg.exe
  • Size 1016KB
  • Sample260522-rb4nysc18n
  • SHA256 46022e427a9e70e3d95fb9ddb016003d442d862942d08ed327f5d4c9133b05a9
  • 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 36 IoCs
    persistence
  • Disables RegEdit via registry modification 6 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 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 7 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 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\tmp385d_ntg.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp385d_ntg.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2296
    • C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe
      "C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe" "c:\users\admin\appdata\local\temp\tmp385d_ntg.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:3612
      • C:\Users\Admin\AppData\Local\Temp\zdmrcel.exe
        "C:\Users\Admin\AppData\Local\Temp\zdmrcel.exe" "-C:\Users\Admin\AppData\Local\Temp\yldrlwmdyijuybou.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:2084
      • C:\Users\Admin\AppData\Local\Temp\zdmrcel.exe
        "C:\Users\Admin\AppData\Local\Temp\zdmrcel.exe" "-C:\Users\Admin\AppData\Local\Temp\yldrlwmdyijuybou.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:2092
    • C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe
      "C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe" "c:\users\admin\appdata\local\temp\tmp385d_ntg.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:4116
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:2444
  • C:\Windows\ftmbwizrnyamrvjqy.exe
    ftmbwizrnyamrvjqy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2860
  • C:\Windows\zpkbymfzxkocjpfoysd.exe
    zpkbymfzxkocjpfoysd.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2772
    • C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe
      "C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe" "c:\windows\zpkbymfzxkocjpfoysd.exe*."
      2⤵
      • Executes dropped EXE
      PID:1044
  • C:\Users\Admin\AppData\Local\Temp\odxnjwoheqtgmrgoxq.exe
    C:\Users\Admin\AppData\Local\Temp\odxnjwoheqtgmrgoxq.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2216
  • C:\Users\Admin\AppData\Local\Temp\btqjiytppekajrjugcphe.exe
    C:\Users\Admin\AppData\Local\Temp\btqjiytppekajrjugcphe.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1792
  • C:\Windows\btqjiytppekajrjugcphe.exe
    btqjiytppekajrjugcphe.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1376
    • C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe
      "C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe" "c:\windows\btqjiytppekajrjugcphe.exe*."
      2⤵
      • Executes dropped EXE
      PID:2644
  • C:\Windows\odxnjwoheqtgmrgoxq.exe
    odxnjwoheqtgmrgoxq.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1532
    • C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe
      "C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe" "c:\windows\odxnjwoheqtgmrgoxq.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:2000
  • C:\Users\Admin\AppData\Local\Temp\ftmbwizrnyamrvjqy.exe
    C:\Users\Admin\AppData\Local\Temp\ftmbwizrnyamrvjqy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2344
  • C:\Windows\mdzrpeytsglaipgqbwiz.exe
    mdzrpeytsglaipgqbwiz.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5004
    • C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe
      "C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe" "c:\windows\mdzrpeytsglaipgqbwiz.exe*."
      2⤵
      • Executes dropped EXE
      PID:4108
  • C:\Windows\ftmbwizrnyamrvjqy.exe
    ftmbwizrnyamrvjqy.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:216
    • C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe
      "C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe" "c:\windows\ftmbwizrnyamrvjqy.exe*."
      2⤵
      • Executes dropped EXE
      PID:4268
  • C:\Windows\zpkbymfzxkocjpfoysd.exe
    zpkbymfzxkocjpfoysd.exe
    1⤵
    • Executes dropped EXE
    PID:4928
  • C:\Windows\odxnjwoheqtgmrgoxq.exe
    odxnjwoheqtgmrgoxq.exe
    1⤵
    • Executes dropped EXE
    PID:2408
  • C:\Users\Admin\AppData\Local\Temp\mdzrpeytsglaipgqbwiz.exe
    C:\Users\Admin\AppData\Local\Temp\mdzrpeytsglaipgqbwiz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2820
  • C:\Users\Admin\AppData\Local\Temp\zpkbymfzxkocjpfoysd.exe
    C:\Users\Admin\AppData\Local\Temp\zpkbymfzxkocjpfoysd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:852
  • C:\Users\Admin\AppData\Local\Temp\yldrlwmdyijuybou.exe
    C:\Users\Admin\AppData\Local\Temp\yldrlwmdyijuybou.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2060
  • C:\Windows\btqjiytppekajrjugcphe.exe
    btqjiytppekajrjugcphe.exe
    1⤵
    • Executes dropped EXE
    PID:4700
  • C:\Windows\mdzrpeytsglaipgqbwiz.exe
    mdzrpeytsglaipgqbwiz.exe
    1⤵
    • Executes dropped EXE
    PID:4692
  • C:\Windows\yldrlwmdyijuybou.exe
    yldrlwmdyijuybou.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3096
  • C:\Windows\yldrlwmdyijuybou.exe
    yldrlwmdyijuybou.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1904
    • C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe
      "C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe" "c:\windows\yldrlwmdyijuybou.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:3360

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

        dzaxauttxqauhtpeuulhi.icb
        • Path C:\Program Files (x86)\dzaxauttxqauhtpeuulhi.icb
        • Size 280B
        • SHA256 2e3c4188d9ff0211cdc48271db54e3f2d3ec6d7ee50b0133ebb52329057b571c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        dzaxauttxqauhtpeuulhi.icb
        • Path C:\Program Files (x86)\dzaxauttxqauhtpeuulhi.icb
        • Size 280B
        • SHA256 600e7aafda2d88d6acaed2f603943edf98323193be48cc9c70ee3cd36054abf5
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        dzaxauttxqauhtpeuulhi.icb
        • Path C:\Program Files (x86)\dzaxauttxqauhtpeuulhi.icb
        • Size 280B
        • SHA256 6c8715543278ef12def13de3aca556a2520e6ff1e94c81658bf18f3ffce8c8c5
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        agfdlmoakqp.exe
        • Path C:\Users\Admin\AppData\Local\Temp\agfdlmoakqp.exe
        • Size 320KB
        • SHA256 e778b0dd571b24cc1b6c88b925fe21a2b0a866605b20ef53f31c4851f951b945
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        zdmrcel.exe
        • Path C:\Users\Admin\AppData\Local\Temp\zdmrcel.exe
        • Size 692KB
        • SHA256 81f4537d80201b9c1a0dc7823d86613f45f0717b6c51756c6c7370c81c031d60
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        dzaxauttxqauhtpeuulhi.icb
        • Path C:\Users\Admin\AppData\Local\dzaxauttxqauhtpeuulhi.icb
        • Size 280B
        • SHA256 f3d216a05016c73fec47b75c7268abd01392f356b96b466eeb4aff0694e9e767
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        yfrznscncgbgebiijuwdpxlqalaezecz.ghs
        • Path C:\Users\Admin\AppData\Local\yfrznscncgbgebiijuwdpxlqalaezecz.ghs
        • Size 4KB
        • SHA256 5a8e1dd92c568d904efc059700b5d95c04b2688163cd637b70dbdda79f10bfe1
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        odxnjwoheqtgmrgoxq.exe
        • Path C:\Windows\SysWOW64\odxnjwoheqtgmrgoxq.exe
        • Size 1016KB
        • SHA256 46022e427a9e70e3d95fb9ddb016003d442d862942d08ed327f5d4c9133b05a9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        otdjvygp.bat
        • Path C:\otdjvygp.bat
        • Size 520KB
        • SHA256 90e55835116d0f7efb3b51742b83b133e1ccdeb362839db81f78a3e93f1c6750
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download