Overview

overview

10

Static

static

3

tmpuz_7tciy.exe

windows10-ltsc_2021-x64

10

tmpuz_7tciy.exe

windows10-2004-x64

10

tmpuz_7tciy.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • 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, 14:04

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General

  • Target
    tmpuz_7tciy.exe
  • Size 1016KB
  • Sample260522-rdknvsds5r
  • SHA256 5cec6e009c541bcfb07895208865fd41e967dafcb3dd83c438df18ca4999d276
  • 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 7 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 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 10 IoCs

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

  • 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 19 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 44 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpuz_7tciy.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpuz_7tciy.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2596
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\users\admin\appdata\local\temp\tmpuz_7tciy.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:1116
      • C:\Users\Admin\AppData\Local\Temp\xggnu.exe
        "C:\Users\Admin\AppData\Local\Temp\xggnu.exe" "-C:\Users\Admin\AppData\Local\Temp\uozrjxkftwsdwhre.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:560
      • C:\Users\Admin\AppData\Local\Temp\xggnu.exe
        "C:\Users\Admin\AppData\Local\Temp\xggnu.exe" "-C:\Users\Admin\AppData\Local\Temp\uozrjxkftwsdwhre.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:1768
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\users\admin\appdata\local\temp\tmpuz_7tciy.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:4552
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:4868
  • C:\Windows\vsgbwndbsyxlhviyggd.exe
    vsgbwndbsyxlhviyggd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1084
  • C:\Users\Admin\AppData\Local\Temp\uozrjxkftwsdwhre.exe
    C:\Users\Admin\AppData\Local\Temp\uozrjxkftwsdwhre.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4452
  • C:\Windows\kgtnhxmjzecpkxjyfe.exe
    kgtnhxmjzecpkxjyfe.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1940
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\kgtnhxmjzecpkxjyfe.exe*."
      2⤵
      • Executes dropped EXE
      PID:4344
  • C:\Windows\igvrnfwvnuujgvjajkix.exe
    igvrnfwvnuujgvjajkix.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1532
  • C:\Windows\vsgbwndbsyxlhviyggd.exe
    vsgbwndbsyxlhviyggd.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3296
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\vsgbwndbsyxlhviyggd.exe*."
      2⤵
      • Executes dropped EXE
      PID:4900
  • C:\Users\Admin\AppData\Local\Temp\vsgbwndbsyxlhviyggd.exe
    C:\Users\Admin\AppData\Local\Temp\vsgbwndbsyxlhviyggd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4180
  • C:\Windows\uozrjxkftwsdwhre.exe
    uozrjxkftwsdwhre.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3808
  • C:\Windows\igvrnfwvnuujgvjajkix.exe
    igvrnfwvnuujgvjajkix.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1520
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\igvrnfwvnuujgvjajkix.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:2528
  • C:\Users\Admin\AppData\Local\Temp\igvrnfwvnuujgvjajkix.exe
    C:\Users\Admin\AppData\Local\Temp\igvrnfwvnuujgvjajkix.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1260
  • C:\Windows\uozrjxkftwsdwhre.exe
    uozrjxkftwsdwhre.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4868
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\uozrjxkftwsdwhre.exe*."
      2⤵
      • Executes dropped EXE
      PID:1192
  • C:\Windows\kgtnhxmjzecpkxjyfe.exe
    kgtnhxmjzecpkxjyfe.exe
    1⤵
    • Executes dropped EXE
    PID:824
  • C:\Users\Admin\AppData\Local\Temp\bwibujxtimjvpbmag.exe
    C:\Users\Admin\AppData\Local\Temp\bwibujxtimjvpbmag.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2920
  • C:\Windows\xwmjgzrrkstjhxmeoqpfc.exe
    xwmjgzrrkstjhxmeoqpfc.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4936
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\xwmjgzrrkstjhxmeoqpfc.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:4328
  • C:\Windows\xwmjgzrrkstjhxmeoqpfc.exe
    xwmjgzrrkstjhxmeoqpfc.exe
    1⤵
    • Executes dropped EXE
    PID:1968
  • C:\Users\Admin\AppData\Local\Temp\kgtnhxmjzecpkxjyfe.exe
    C:\Users\Admin\AppData\Local\Temp\kgtnhxmjzecpkxjyfe.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3796
  • C:\Windows\bwibujxtimjvpbmag.exe
    bwibujxtimjvpbmag.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4984
  • C:\Users\Admin\AppData\Local\Temp\xwmjgzrrkstjhxmeoqpfc.exe
    C:\Users\Admin\AppData\Local\Temp\xwmjgzrrkstjhxmeoqpfc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3812
  • C:\Windows\system32\backgroundTaskHost.exe
    "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
    1⤵
      PID:1192
    • C:\Windows\bwibujxtimjvpbmag.exe
      bwibujxtimjvpbmag.exe .
      1⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5072
      • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
        "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\bwibujxtimjvpbmag.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: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

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          Downloads

          zeadgfdjiwdzdzusiqvruxw.azn
          • Path C:\Program Files (x86)\zeadgfdjiwdzdzusiqvruxw.azn
          • Size 280B
          • SHA256 7554328c6ae5e74d65a7e4e07a59bd3391a0c69819a8030b9c69ed93659262e7
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          zeadgfdjiwdzdzusiqvruxw.azn
          • Path C:\Program Files (x86)\zeadgfdjiwdzdzusiqvruxw.azn
          • Size 280B
          • SHA256 84c7a914aab4e5adc41d165e08bcc656d184858e40dc2379313ac2b82b96de4e
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          duaouzhhnek.exe
          • Path C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
          • Size 320KB
          • SHA256 9e2ccab9ff981edc66e27747677fe6f5ad935048d91a2b9a9d00b36a538a5a73
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          xggnu.exe
          • Path C:\Users\Admin\AppData\Local\Temp\xggnu.exe
          • Size 716KB
          • SHA256 e63dbca133ad4c698c48ddc3244a51fe2cab8ae7621fe576ccb1be4e81c55375
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          mcjxlvevfewdszfopiyfthrarbaszovbkl.ubp
          • Path C:\Users\Admin\AppData\Local\mcjxlvevfewdszfopiyfthrarbaszovbkl.ubp
          • Size 4KB
          • SHA256 c5cfbb1ea0f42c45812d177eeab7013572db3f0212518dd7e834df1b69689124
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          zeadgfdjiwdzdzusiqvruxw.azn
          • Path C:\Users\Admin\AppData\Local\zeadgfdjiwdzdzusiqvruxw.azn
          • Size 280B
          • SHA256 198debbf5d6e49d96c0ed814605023afda41b2d883108f8d513dc536cb28a05a
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          kgtnhxmjzecpkxjyfe.exe
          • Path C:\Windows\SysWOW64\kgtnhxmjzecpkxjyfe.exe
          • Size 1016KB
          • SHA256 5cec6e009c541bcfb07895208865fd41e967dafcb3dd83c438df18ca4999d276
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download