Overview

overview

10

Static

static

3

tmpe042zxlo.exe

windows10-ltsc_2021-x64

10

tmpe042zxlo.exe

windows10-2004-x64

10

tmpe042zxlo.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • 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, 14:46

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General

  • Target
    tmpe042zxlo.exe
  • Size 564KB
  • Sample260522-r5jwmsgx61
  • SHA256 d32d585693fabb35cdd7019a2b0e749715e4f5e23cf87d5ee3bf099aa36dfb7d
  • 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 8 IoCs
    persistence
  • UAC bypass 3 TTPs 17 IoCs
    defense_evasiontrojan
  • Adds policy Run key to start application 2 TTPs 39 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 16 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 5 IoCs

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

  • Drops file in System32 directory 60 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 60 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 46 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpe042zxlo.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpe042zxlo.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4968
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\users\admin\appdata\local\temp\tmpe042zxlo.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:3928
      • C:\Users\Admin\AppData\Local\Temp\adqqyij.exe
        "C:\Users\Admin\AppData\Local\Temp\adqqyij.exe" "-C:\Users\Admin\AppData\Local\Temp\zlhqhakcrkmitmxh.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:4672
      • C:\Users\Admin\AppData\Local\Temp\adqqyij.exe
        "C:\Users\Admin\AppData\Local\Temp\adqqyij.exe" "-C:\Users\Admin\AppData\Local\Temp\zlhqhakcrkmitmxh.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:1400
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\users\admin\appdata\local\temp\tmpe042zxlo.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:1340
  • C:\Windows\apoauqdyqmrqeaobrze.exe
    apoauqdyqmrqeaobrze.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:208
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\apoauqdyqmrqeaobrze.exe*."
      2⤵
      • Executes dropped EXE
      PID:1356
  • C:\Windows\gtqasmxqgadamgsdr.exe
    gtqasmxqgadamgsdr.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4044
  • C:\Windows\nddqliwslioodapdudjz.exe
    nddqliwslioodapdudjz.exe
    1⤵
    • Executes dropped EXE
    PID:4296
  • C:\Windows\nddqliwslioodapdudjz.exe
    nddqliwslioodapdudjz.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1240
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\nddqliwslioodapdudjz.exe*."
      2⤵
      • Executes dropped EXE
      PID:3676
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3308
  • C:\Users\Admin\AppData\Local\Temp\nddqliwslioodapdudjz.exe
    C:\Users\Admin\AppData\Local\Temp\nddqliwslioodapdudjz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2596
  • C:\Users\Admin\AppData\Local\Temp\gtqasmxqgadamgsdr.exe
    C:\Users\Admin\AppData\Local\Temp\gtqasmxqgadamgsdr.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2516
  • C:\Users\Admin\AppData\Local\Temp\zlhqhakcrkmitmxh.exe
    C:\Users\Admin\AppData\Local\Temp\zlhqhakcrkmitmxh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4864
  • C:\Windows\gtqasmxqgadamgsdr.exe
    gtqasmxqgadamgsdr.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4908
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\gtqasmxqgadamgsdr.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:3908
  • C:\Windows\zlhqhakcrkmitmxh.exe
    zlhqhakcrkmitmxh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2044
  • C:\Users\Admin\AppData\Local\Temp\pdbmfamgxswuhcpbqx.exe
    C:\Users\Admin\AppData\Local\Temp\pdbmfamgxswuhcpbqx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3120
  • C:\Users\Admin\AppData\Local\Temp\apoauqdyqmrqeaobrze.exe
    C:\Users\Admin\AppData\Local\Temp\apoauqdyqmrqeaobrze.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2636
  • C:\Windows\pdbmfamgxswuhcpbqx.exe
    pdbmfamgxswuhcpbqx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3060
  • C:\Users\Admin\AppData\Local\Temp\ctuiecroignoecshzjqhi.exe
    C:\Users\Admin\AppData\Local\Temp\ctuiecroignoecshzjqhi.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3656
  • C:\Windows\ctuiecroignoecshzjqhi.exe
    ctuiecroignoecshzjqhi.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4332
  • C:\Windows\pdbmfamgxswuhcpbqx.exe
    pdbmfamgxswuhcpbqx.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4640
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\pdbmfamgxswuhcpbqx.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:5108
  • C:\Windows\apoauqdyqmrqeaobrze.exe
    apoauqdyqmrqeaobrze.exe
    1⤵
    • Executes dropped EXE
    PID:3584
  • C:\Windows\zlhqhakcrkmitmxh.exe
    zlhqhakcrkmitmxh.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1768
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\zlhqhakcrkmitmxh.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:3952
  • C:\Windows\ctuiecroignoecshzjqhi.exe
    ctuiecroignoecshzjqhi.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2476
    • C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
      "C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe" "c:\windows\ctuiecroignoecshzjqhi.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:1044

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

        adqqyij.exe
        • Path C:\Users\Admin\AppData\Local\Temp\adqqyij.exe
        • Size 724KB
        • SHA256 31e96aea191f9ba09ea53827282d02c6c9ae5c6bbf13c0d3d0dfeb550dfaeb2d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        duaouzhhnek.exe
        • Path C:\Users\Admin\AppData\Local\Temp\duaouzhhnek.exe
        • Size 320KB
        • SHA256 bae0c7da72d129d766f63a253f3e5cab5a3abb1fb1eade3a37b6ef50b4927410
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        cdomsazgksjuuccbdxopayemlsw.vgg
        • Path C:\Users\Admin\AppData\Local\cdomsazgksjuuccbdxopayemlsw.vgg
        • Size 280B
        • SHA256 56e3f901ab783c0d1725d271da9719ac785b167fc8c58df49dbcc5865c91a1bc
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        zlhqhakcrkmitmxhuzbnjsjcmetmokvozjwbdp.ule
        • Path C:\Users\Admin\AppData\Local\zlhqhakcrkmitmxhuzbnjsjcmetmokvozjwbdp.ule
        • Size 4KB
        • SHA256 7dd591f8bde55b1ad3adc48485b0a344dbcbdfe218b19610863aee7adffca5c6
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        pdbmfamgxswuhcpbqx.exe
        • Path C:\Windows\SysWOW64\pdbmfamgxswuhcpbqx.exe
        • Size 564KB
        • SHA256 d32d585693fabb35cdd7019a2b0e749715e4f5e23cf87d5ee3bf099aa36dfb7d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download