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
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-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 34 IoCs
    persistence
  • Disables RegEdit via registry modification 6 IoCs
    defense_evasion
  • 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 4 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⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3456
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.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
      • 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:4240
      • C:\Users\Admin\AppData\Local\Temp\mssamk.exe
        "C:\Users\Admin\AppData\Local\Temp\mssamk.exe" "-C:\Users\Admin\AppData\Local\Temp\yoyqmuqgsjrkyrgs.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:4160
      • C:\Users\Admin\AppData\Local\Temp\mssamk.exe
        "C:\Users\Admin\AppData\Local\Temp\mssamk.exe" "-C:\Users\Admin\AppData\Local\Temp\yoyqmuqgsjrkyrgs.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:3024
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.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:2044
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3356
  • C:\Windows\yoyqmuqgsjrkyrgs.exe
    yoyqmuqgsjrkyrgs.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:744
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\yoyqmuqgsjrkyrgs.exe*."
      2⤵
      • Executes dropped EXE
      PID:1128
  • C:\Windows\bwlijwxsjfsqjhbsjupeb.exe
    bwlijwxsjfsqjhbsjupeb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2464
  • C:\Windows\zsfazkjcrlwsjfxmbkd.exe
    zsfazkjcrlwsjfxmbkd.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2036
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\zsfazkjcrlwsjfxmbkd.exe*."
      2⤵
      • Executes dropped EXE
      PID:5892
  • C:\Users\Admin\AppData\Local\Temp\yoyqmuqgsjrkyrgs.exe
    C:\Users\Admin\AppData\Local\Temp\yoyqmuqgsjrkyrgs.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5728
  • C:\Windows\zsfazkjcrlwsjfxmbkd.exe
    zsfazkjcrlwsjfxmbkd.exe
    1⤵
    • Executes dropped EXE
    PID:5348
  • C:\Users\Admin\AppData\Local\Temp\mguqqccwmhtqifyoeoiw.exe
    C:\Users\Admin\AppData\Local\Temp\mguqqccwmhtqifyoeoiw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5464
  • C:\Windows\ogsmkuskyrbwmhymai.exe
    ogsmkuskyrbwmhymai.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:408
  • C:\Windows\mguqqccwmhtqifyoeoiw.exe
    mguqqccwmhtqifyoeoiw.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5828
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\mguqqccwmhtqifyoeoiw.exe*."
      2⤵
      • Executes dropped EXE
      PID:5540
  • C:\Windows\ogsmkuskyrbwmhymai.exe
    ogsmkuskyrbwmhymai.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5068
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\ogsmkuskyrbwmhymai.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:3748
  • C:\Windows\fwhaxgduhzicrlbob.exe
    fwhaxgduhzicrlbob.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5808
  • C:\Users\Admin\AppData\Local\Temp\zsfazkjcrlwsjfxmbkd.exe
    C:\Users\Admin\AppData\Local\Temp\zsfazkjcrlwsjfxmbkd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3280
  • C:\Users\Admin\AppData\Local\Temp\ogsmkuskyrbwmhymai.exe
    C:\Users\Admin\AppData\Local\Temp\ogsmkuskyrbwmhymai.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:6028
  • C:\Windows\mguqqccwmhtqifyoeoiw.exe
    mguqqccwmhtqifyoeoiw.exe
    1⤵
    • Executes dropped EXE
    PID:1612
  • C:\Windows\bwlijwxsjfsqjhbsjupeb.exe
    bwlijwxsjfsqjhbsjupeb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2028
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\bwlijwxsjfsqjhbsjupeb.exe*."
      2⤵
      • Executes dropped EXE
      PID:1148
  • C:\Users\Admin\AppData\Local\Temp\fwhaxgduhzicrlbob.exe
    C:\Users\Admin\AppData\Local\Temp\fwhaxgduhzicrlbob.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3952
  • C:\Users\Admin\AppData\Local\Temp\bwlijwxsjfsqjhbsjupeb.exe
    C:\Users\Admin\AppData\Local\Temp\bwlijwxsjfsqjhbsjupeb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5988
  • C:\Windows\fwhaxgduhzicrlbob.exe
    fwhaxgduhzicrlbob.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4860
    • C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe
      "C:\Users\Admin\AppData\Local\Temp\qthqeovcadr.exe" "c:\windows\fwhaxgduhzicrlbob.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:4108
  • C:\Windows\yoyqmuqgsjrkyrgs.exe
    yoyqmuqgsjrkyrgs.exe
    1⤵
    • Executes dropped EXE
    PID:4436

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

        System Information Discovery

        2
        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

        gieiqksusvpuuzaywoqmqysa.adx
        • Path C:\Program Files (x86)\gieiqksusvpuuzaywoqmqysa.adx
        • Size 272B
        • SHA256 8c9777e82f6272c55f7bb8b9d43a04c20333e49c6553065c9d76e4ba94753bd6
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        gieiqksusvpuuzaywoqmqysa.adx
        • Path C:\Program Files (x86)\gieiqksusvpuuzaywoqmqysa.adx
        • Size 272B
        • SHA256 a5ee0043af29473f6d5dbdb474499809dc4cf099efad6fb926e1d8a2a4f6d10a
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        mssamk.exe
        • Path C:\Users\Admin\AppData\Local\Temp\mssamk.exe
        • Size 692KB
        • SHA256 2e816596ead7eb5d23b748903eec91f047693ed610e1137511384de127c90e37
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

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

        gieiqksusvpuuzaywoqmqysa.adx
        • Path C:\Users\Admin\AppData\Local\gieiqksusvpuuzaywoqmqysa.adx
        • Size 272B
        • SHA256 1a09f74b5d22d5cc3b33127c8183fe4e6ada7d5477a4d2a48dbedfae87eabd0e
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        pcjyrwpclzeufvhqzcpwlejcpymrhsiudmp.jyr
        • Path C:\Users\Admin\AppData\Local\pcjyrwpclzeufvhqzcpwlejcpymrhsiudmp.jyr
        • Size 3KB
        • SHA256 963fc0b74c6481ce967863bf00299a624a7b5135d0e71bdbf5efec90dc29d0b0
        • MD5 SHA1 SHA512 TLSH
        Submit Download

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