Overview

overview

10

Static

static

3

tmp7ey9e9r9.exe

windows10-ltsc_2021-x64

10

tmp7ey9e9r9.exe

windows10-2004-x64

10

tmp7ey9e9r9.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    22/05/2026, 13:59

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General

  • Target
    tmp7ey9e9r9.exe
  • Size 532KB
  • Sample260522-ragsssc13n
  • SHA256 4181ec24509fde4a5caf4365621fc8566782a855f1cb32a5a53f73875565b445
  • 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 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 64 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 47 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 10 IoCs
  • System policy modification 1 TTPs 40 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp7ey9e9r9.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp7ey9e9r9.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1764
    • C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe
      "C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe" "c:\users\admin\appdata\local\temp\tmp7ey9e9r9.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:3124
      • C:\Users\Admin\AppData\Local\Temp\lrwyem.exe
        "C:\Users\Admin\AppData\Local\Temp\lrwyem.exe" "-c:\users\admin\appdata\local\temp\tmp7ey9e9r9.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:236
      • C:\Users\Admin\AppData\Local\Temp\lrwyem.exe
        "C:\Users\Admin\AppData\Local\Temp\lrwyem.exe" "-c:\users\admin\appdata\local\temp\tmp7ey9e9r9.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:856
    • C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe
      "C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe" "c:\users\admin\appdata\local\temp\tmp7ey9e9r9.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:4428
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:1452
  • C:\Users\Admin\AppData\Local\Temp\evlypieslxrtaoxre.exe
    C:\Users\Admin\AppData\Local\Temp\evlypieslxrtaoxre.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2788
  • C:\Windows\nfwkcwticpknvkupdo.exe
    nfwkcwticpknvkupdo.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2512
    • C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe
      "C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe" "c:\windows\nfwkcwticpknvkupdo.exe*."
      2⤵
      • Executes dropped EXE
      PID:1320
  • C:\Windows\evlypieslxrtaoxre.exe
    evlypieslxrtaoxre.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1184
  • C:\Windows\xncoewrewhabhucv.exe
    xncoewrewhabhucv.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4140
    • C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe
      "C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe" "c:\windows\xncoewrewhabhucv.exe*."
      2⤵
      • Executes dropped EXE
      PID:3464
  • C:\Windows\yrjyrmkavjfjsitpeqc.exe
    yrjyrmkavjfjsitpeqc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1848
  • C:\Users\Admin\AppData\Local\Temp\yrjyrmkavjfjsitpeqc.exe
    C:\Users\Admin\AppData\Local\Temp\yrjyrmkavjfjsitpeqc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3428
  • C:\Windows\xncoewrewhabhucv.exe
    xncoewrewhabhucv.exe
    1⤵
    • Executes dropped EXE
    PID:2820
  • C:\Windows\lfyoieduqfchriurhuhb.exe
    lfyoieduqfchriurhuhb.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3524
    • C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe
      "C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe" "c:\windows\lfyoieduqfchriurhuhb.exe*."
      2⤵
      • Executes dropped EXE
      PID:4612
  • C:\Windows\lfyoieduqfchriurhuhb.exe
    lfyoieduqfchriurhuhb.exe
    1⤵
    • Executes dropped EXE
    PID:4572
  • C:\Windows\evlypieslxrtaoxre.exe
    evlypieslxrtaoxre.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5052
    • C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe
      "C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe" "c:\windows\evlypieslxrtaoxre.exe*."
      2⤵
      • Executes dropped EXE
      PID:2240
  • C:\Windows\nfwkcwticpknvkupdo.exe
    nfwkcwticpknvkupdo.exe
    1⤵
    • Executes dropped EXE
    PID:4832
  • C:\Users\Admin\AppData\Local\Temp\xncoewrewhabhucv.exe
    C:\Users\Admin\AppData\Local\Temp\xncoewrewhabhucv.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2996
  • C:\Users\Admin\AppData\Local\Temp\nfwkcwticpknvkupdo.exe
    C:\Users\Admin\AppData\Local\Temp\nfwkcwticpknvkupdo.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1580
  • C:\Users\Admin\AppData\Local\Temp\avpgbyyqndbhskxvmaojd.exe
    C:\Users\Admin\AppData\Local\Temp\avpgbyyqndbhskxvmaojd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1864
  • C:\Windows\avpgbyyqndbhskxvmaojd.exe
    avpgbyyqndbhskxvmaojd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:984
  • C:\Windows\avpgbyyqndbhskxvmaojd.exe
    avpgbyyqndbhskxvmaojd.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5080
    • C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe
      "C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe" "c:\windows\avpgbyyqndbhskxvmaojd.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:3848
  • C:\Windows\yrjyrmkavjfjsitpeqc.exe
    yrjyrmkavjfjsitpeqc.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2696
    • C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe
      "C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe" "c:\windows\yrjyrmkavjfjsitpeqc.exe*."
      2⤵
      • Executes dropped EXE
      PID:904
  • C:\Users\Admin\AppData\Local\Temp\lfyoieduqfchriurhuhb.exe
    C:\Users\Admin\AppData\Local\Temp\lfyoieduqfchriurhuhb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2804

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

        evlypieslxrtaoxre.exe
        • Path C:\Users\Admin\AppData\Local\Temp\evlypieslxrtaoxre.exe
        • Size 532KB
        • SHA256 4181ec24509fde4a5caf4365621fc8566782a855f1cb32a5a53f73875565b445
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        lrwyem.exe
        • Path C:\Users\Admin\AppData\Local\Temp\lrwyem.exe
        • Size 696KB
        • SHA256 fc1c809fb9df10ef05e5c4872b428b0aedac989b0254c0c1423e074c6fe0c759
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        rnowznuybxy.exe
        • Path C:\Users\Admin\AppData\Local\Temp\rnowznuybxy.exe
        • Size 308KB
        • SHA256 6fff20aabe8265b6e811c9dbcb987f9c15cf07d1d8b80ced7b287d96900f5c62
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        cddabekilhlxomfjgauvvst.cad
        • Path C:\Users\Admin\AppData\Local\cddabekilhlxomfjgauvvst.cad
        • Size 120B
        • SHA256 1c2d87538e1e5f2b73c246266e32a765b6c677b2705cf7edc4861ad2585120e9
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        pbmuguluipebdmqfnsxjucoctcqxmjluyn.afr
        • Path C:\Users\Admin\AppData\Local\pbmuguluipebdmqfnsxjucoctcqxmjluyn.afr
        • Size 3KB
        • SHA256 3449ba28e9fbb92c1391bbfbbdfd37817898d3c4b01747781aa9aaa97e2d22a5
        • MD5 SHA1 SHA512 TLSH
        Submit Download