Overview

overview

10

Static

static

3

tmp2y9xv4je.exe

windows10-ltsc_2021-x64

10

tmp2y9xv4je.exe

windows10-2004-x64

10

tmp2y9xv4je.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    02/06/2026, 03:44

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General

  • Target
    tmp2y9xv4je.exe
  • Size 548KB
  • Sample260602-eazbmaew2p
  • SHA256 47b0c68c97a03bd0a32d47e9f3b220078bf78d693b1ea661a29b8f8e13f4124d
  • 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 31 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 7 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 7 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 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 40 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp2y9xv4je.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp2y9xv4je.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4500
    • C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe
      "C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe" "c:\users\admin\appdata\local\temp\tmp2y9xv4je.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:2672
      • C:\Users\Admin\AppData\Local\Temp\cffkq.exe
        "C:\Users\Admin\AppData\Local\Temp\cffkq.exe" "-C:\Users\Admin\AppData\Local\Temp\znyofypavisdsmbb.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:5848
      • C:\Users\Admin\AppData\Local\Temp\cffkq.exe
        "C:\Users\Admin\AppData\Local\Temp\cffkq.exe" "-C:\Users\Admin\AppData\Local\Temp\znyofypavisdsmbb.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:1448
    • C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe
      "C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe" "c:\users\admin\appdata\local\temp\tmp2y9xv4je.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:3396
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3924
  • C:\Windows\arfysoiwukxldasvjpe.exe
    arfysoiwukxldasvjpe.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1228
  • C:\Windows\gvhyqkcokyjvlgwxj.exe
    gvhyqkcokyjvlgwxj.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:732
    • C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe
      "C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe" "c:\windows\gvhyqkcokyjvlgwxj.exe*."
      2⤵
      • Executes dropped EXE
      PID:1180
  • C:\Windows\nfuojgbqpgujcatxmtjb.exe
    nfuojgbqpgujcatxmtjb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4220
  • C:\Windows\cvlgcawmmetjdcwbrzqjz.exe
    cvlgcawmmetjdcwbrzqjz.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5492
    • C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe
      "C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe" "c:\windows\cvlgcawmmetjdcwbrzqjz.exe*."
      2⤵
      • Executes dropped EXE
      PID:4260
  • C:\Users\Admin\AppData\Local\Temp\znyofypavisdsmbb.exe
    C:\Users\Admin\AppData\Local\Temp\znyofypavisdsmbb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:472
  • C:\Users\Admin\AppData\Local\Temp\gvhyqkcokyjvlgwxj.exe
    C:\Users\Admin\AppData\Local\Temp\gvhyqkcokyjvlgwxj.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4764
  • C:\Windows\gvhyqkcokyjvlgwxj.exe
    gvhyqkcokyjvlgwxj.exe
    1⤵
    • Executes dropped EXE
    PID:6008
  • C:\Windows\pfskdyrebqcpgctvin.exe
    pfskdyrebqcpgctvin.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2184
    • C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe
      "C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe" "c:\windows\pfskdyrebqcpgctvin.exe*."
      2⤵
      • Executes dropped EXE
      PID:3028
  • C:\Users\Admin\AppData\Local\Temp\nfuojgbqpgujcatxmtjb.exe
    C:\Users\Admin\AppData\Local\Temp\nfuojgbqpgujcatxmtjb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:228
  • C:\Windows\pfskdyrebqcpgctvin.exe
    pfskdyrebqcpgctvin.exe
    1⤵
    • Executes dropped EXE
    PID:5856
  • C:\Windows\znyofypavisdsmbb.exe
    znyofypavisdsmbb.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2272
    • C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe
      "C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe" "c:\windows\znyofypavisdsmbb.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:1064
  • C:\Windows\nfuojgbqpgujcatxmtjb.exe
    nfuojgbqpgujcatxmtjb.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1736
    • C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe
      "C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe" "c:\windows\nfuojgbqpgujcatxmtjb.exe*."
      2⤵
      • Executes dropped EXE
      PID:1920
  • C:\Users\Admin\AppData\Local\Temp\pfskdyrebqcpgctvin.exe
    C:\Users\Admin\AppData\Local\Temp\pfskdyrebqcpgctvin.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5124
  • C:\Windows\arfysoiwukxldasvjpe.exe
    arfysoiwukxldasvjpe.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4228
    • C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe
      "C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe" "c:\windows\arfysoiwukxldasvjpe.exe*."
      2⤵
      • Executes dropped EXE
      PID:5476
  • C:\Windows\cvlgcawmmetjdcwbrzqjz.exe
    cvlgcawmmetjdcwbrzqjz.exe
    1⤵
    • Executes dropped EXE
    PID:4264
  • C:\Users\Admin\AppData\Local\Temp\cvlgcawmmetjdcwbrzqjz.exe
    C:\Users\Admin\AppData\Local\Temp\cvlgcawmmetjdcwbrzqjz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4484
  • C:\Windows\znyofypavisdsmbb.exe
    znyofypavisdsmbb.exe
    1⤵
    • Executes dropped EXE
    PID:1612
  • C:\Users\Admin\AppData\Local\Temp\arfysoiwukxldasvjpe.exe
    C:\Users\Admin\AppData\Local\Temp\arfysoiwukxldasvjpe.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5816

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

        Query Registry

        1
        T1012

        System Information Discovery

        3
        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

        tvuydkpoxywvygjxwnnposxeji.sqp
        • Path C:\Program Files (x86)\tvuydkpoxywvygjxwnnposxeji.sqp
        • Size 280B
        • SHA256 c856f05826f17ba40d03e6dc04078651aa0d4553b94695c5ecd3b9a66db09429
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        cffkq.exe
        • Path C:\Users\Admin\AppData\Local\Temp\cffkq.exe
        • Size 732KB
        • SHA256 24e44306a502e70405852b5d50caa3dda9a886ecd64e14a5fd541d18a6f1b7fb
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        jpzoytzxtzj.exe
        • Path C:\Users\Admin\AppData\Local\Temp\jpzoytzxtzj.exe
        • Size 320KB
        • SHA256 b0a9ce11c9aa64b3aec468e4f67555d7781649a9ca862bab5cd995a1bd7e6e16
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        tvuydkpoxywvygjxwnnposxeji.sqp
        • Path C:\Users\Admin\AppData\Local\tvuydkpoxywvygjxwnnposxeji.sqp
        • Size 280B
        • SHA256 b90a999291c4766f7230f8e5dcd064aa115bb605c89916d1bf549efe4bb56a39
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        tvuydkpoxywvygjxwnnposxeji.sqp
        • Path C:\Users\Admin\AppData\Local\tvuydkpoxywvygjxwnnposxeji.sqp
        • Size 280B
        • SHA256 f82a2e66e0ddccddac566c847316cb8abf27b760399426a000ea169b50f214b4
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        uhrgwoeoiudnbuihrterbqgyoysenxlesrbdo.laq
        • Path C:\Users\Admin\AppData\Local\uhrgwoeoiudnbuihrterbqgyoysenxlesrbdo.laq
        • Size 4KB
        • SHA256 b6b2ac6e1af0a1cbbe3c585b5b6b04037e370c9ff59cd8535679a3378fd042b7
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        pfskdyrebqcpgctvin.exe
        • Path C:\Windows\SysWOW64\pfskdyrebqcpgctvin.exe
        • Size 548KB
        • SHA256 47b0c68c97a03bd0a32d47e9f3b220078bf78d693b1ea661a29b8f8e13f4124d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download