Overview

overview

10

Static

static

3

tmplu1crba7.exe

windows10-ltsc_2021-x64

10

tmplu1crba7.exe

windows10-2004-x64

10

tmplu1crba7.exe

windows11-21h2-x64

10

Analysis

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

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General

  • Target
    tmplu1crba7.exe
  • Size 856KB
  • Sample260602-endbbadw2x
  • SHA256 d1b56d9ca38d223d7360a0ddbbbededfd8481bb8878810c9dc37d609a6b57bb7
  • 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 35 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 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 6 IoCs

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

  • 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 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 42 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmplu1crba7.exe
    "C:\Users\Admin\AppData\Local\Temp\tmplu1crba7.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3436
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\users\admin\appdata\local\temp\tmplu1crba7.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:1636
      • C:\Users\Admin\AppData\Local\Temp\uaitclq.exe
        "C:\Users\Admin\AppData\Local\Temp\uaitclq.exe" "-C:\Users\Admin\AppData\Local\Temp\tiztldrjxjyxatye.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:3448
      • C:\Users\Admin\AppData\Local\Temp\uaitclq.exe
        "C:\Users\Admin\AppData\Local\Temp\uaitclq.exe" "-C:\Users\Admin\AppData\Local\Temp\tiztldrjxjyxatye.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:980
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\users\admin\appdata\local\temp\tmplu1crba7.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:3068
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:4048
  • C:\Windows\aqidwpexmzpptntak.exe
    aqidwpexmzpptntak.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4044
  • C:\Windows\umgdytkfwldflhpykgy.exe
    umgdytkfwldflhpykgy.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1888
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\windows\umgdytkfwldflhpykgy.exe*."
      2⤵
      • Executes dropped EXE
      PID:2396
  • C:\Windows\wqmlifyvofzdljtesqkea.exe
    wqmlifyvofzdljtesqkea.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1444
  • C:\Users\Admin\AppData\Local\Temp\umgdytkfwldflhpykgy.exe
    C:\Users\Admin\AppData\Local\Temp\umgdytkfwldflhpykgy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2488
  • C:\Windows\havtpldzrhadkhqankdw.exe
    havtpldzrhadkhqankdw.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4384
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\windows\havtpldzrhadkhqankdw.exe*."
      2⤵
      • Executes dropped EXE
      PID:4816
  • C:\Users\Admin\AppData\Local\Temp\aqidwpexmzpptntak.exe
    C:\Users\Admin\AppData\Local\Temp\aqidwpexmzpptntak.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1484
  • C:\Windows\havtpldzrhadkhqankdw.exe
    havtpldzrhadkhqankdw.exe
    1⤵
    • Executes dropped EXE
    PID:2536
  • C:\Windows\umgdytkfwldflhpykgy.exe
    umgdytkfwldflhpykgy.exe
    1⤵
    • Executes dropped EXE
    PID:4164
  • C:\Windows\aqidwpexmzpptntak.exe
    aqidwpexmzpptntak.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2380
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\windows\aqidwpexmzpptntak.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:392
  • C:\Windows\wqmlifyvofzdljtesqkea.exe
    wqmlifyvofzdljtesqkea.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2756
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\windows\wqmlifyvofzdljtesqkea.exe*."
      2⤵
      • Executes dropped EXE
      PID:3644
  • C:\Users\Admin\AppData\Local\Temp\tiztldrjxjyxatye.exe
    C:\Users\Admin\AppData\Local\Temp\tiztldrjxjyxatye.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3340
  • C:\Windows\jatpjdtndrijojqyje.exe
    jatpjdtndrijojqyje.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1148
  • C:\Windows\jatpjdtndrijojqyje.exe
    jatpjdtndrijojqyje.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2604
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\windows\jatpjdtndrijojqyje.exe*."
      2⤵
      • Executes dropped EXE
      PID:3856
  • C:\Windows\tiztldrjxjyxatye.exe
    tiztldrjxjyxatye.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4544
    • C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
      "C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe" "c:\windows\tiztldrjxjyxatye.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:4704
  • C:\Windows\tiztldrjxjyxatye.exe
    tiztldrjxjyxatye.exe
    1⤵
    • Executes dropped EXE
    PID:4932
  • C:\Users\Admin\AppData\Local\Temp\jatpjdtndrijojqyje.exe
    C:\Users\Admin\AppData\Local\Temp\jatpjdtndrijojqyje.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4180
  • C:\Users\Admin\AppData\Local\Temp\wqmlifyvofzdljtesqkea.exe
    C:\Users\Admin\AppData\Local\Temp\wqmlifyvofzdljtesqkea.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4336
  • C:\Users\Admin\AppData\Local\Temp\havtpldzrhadkhqankdw.exe
    C:\Users\Admin\AppData\Local\Temp\havtpldzrhadkhqankdw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1960

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

        pjhvvwaoztr.exe
        • Path C:\Users\Admin\AppData\Local\Temp\pjhvvwaoztr.exe
        • Size 320KB
        • SHA256 a4287c444430c174adfa2d98a1b5868cedc9f077931521d18a42175f76340bb1
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        uaitclq.exe
        • Path C:\Users\Admin\AppData\Local\Temp\uaitclq.exe
        • Size 728KB
        • SHA256 bedd3df03b51f0acaafc7c61704b07d9f65e726dc7f265e093d1c5892b0d2285
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        bcflpttxxvwhwbskfklmpvzd.hhf
        • Path C:\Users\Admin\AppData\Local\bcflpttxxvwhwbskfklmpvzd.hhf
        • Size 272B
        • SHA256 23e46b3d5d541642a52ebb7b8e118a002216141852a745c00fb93a78faacaaba
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        kwkbqfqfqzlhhxzciykwkbqfqfqzlhhxzci.kwk
        • Path C:\Users\Admin\AppData\Local\kwkbqfqfqzlhhxzciykwkbqfqfqzlhhxzci.kwk
        • Size 3KB
        • SHA256 68a858de9100db4f1eba840c70203fe92a4309fd48b7856eb77da044958d2072
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        jatpjdtndrijojqyje.exe
        • Path C:\Windows\SysWOW64\jatpjdtndrijojqyje.exe
        • Size 856KB
        • SHA256 d1b56d9ca38d223d7360a0ddbbbededfd8481bb8878810c9dc37d609a6b57bb7
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download