Overview

overview

10

Static

static

3

tmpx7zfwysq.exe

windows10-ltsc_2021-x64

10

tmpx7zfwysq.exe

windows10-2004-x64

10

tmpx7zfwysq.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    22/05/2026, 14:28

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General

  • Target
    tmpx7zfwysq.exe
  • Size 1016KB
  • Sample260522-rtesjsdz2n
  • SHA256 81275952478c989e3792f397f101cb5b1ec01fe782f5bb418ac6df550c633b55
  • 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 31 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 autorun.inf file 1 TTPs 4 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • 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\tmpx7zfwysq.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpx7zfwysq.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4012
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\users\admin\appdata\local\temp\tmpx7zfwysq.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:840
      • C:\Users\Admin\AppData\Local\Temp\wapuwem.exe
        "C:\Users\Admin\AppData\Local\Temp\wapuwem.exe" "-C:\Users\Admin\AppData\Local\Temp\vigufwndyidamcnp.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 autorun.inf file
        • 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:5292
      • C:\Users\Admin\AppData\Local\Temp\wapuwem.exe
        "C:\Users\Admin\AppData\Local\Temp\wapuwem.exe" "-C:\Users\Admin\AppData\Local\Temp\vigufwndyidamcnp.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:3924
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\users\admin\appdata\local\temp\tmpx7zfwysq.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:5208
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3356
  • C:\Windows\cqpeqiarnyusfwilu.exe
    cqpeqiarnyusfwilu.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4564
  • C:\Windows\wmnesmgzxkiixqejuza.exe
    wmnesmgzxkiixqejuza.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2536
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\wmnesmgzxkiixqejuza.exe*."
      2⤵
      • Executes dropped EXE
      PID:1504
  • C:\Windows\laaqdwpheqnmasfjtx.exe
    laaqdwpheqnmasfjtx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1620
  • C:\Windows\jacujeztsgfgwqflxdfw.exe
    jacujeztsgfgwqflxdfw.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1292
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\jacujeztsgfgwqflxdfw.exe*."
      2⤵
      • Executes dropped EXE
      PID:228
  • C:\Users\Admin\AppData\Local\Temp\vigufwndyidamcnp.exe
    C:\Users\Admin\AppData\Local\Temp\vigufwndyidamcnp.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3544
  • C:\Users\Admin\AppData\Local\Temp\wmnesmgzxkiixqejuza.exe
    C:\Users\Admin\AppData\Local\Temp\wmnesmgzxkiixqejuza.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2664
  • C:\Windows\yqtmcyuppeegxsipcjmeh.exe
    yqtmcyuppeegxsipcjmeh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1444
  • C:\Windows\laaqdwpheqnmasfjtx.exe
    laaqdwpheqnmasfjtx.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4784
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\laaqdwpheqnmasfjtx.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:5744
  • C:\Windows\cqpeqiarnyusfwilu.exe
    cqpeqiarnyusfwilu.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4956
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\cqpeqiarnyusfwilu.exe*."
      2⤵
      • Executes dropped EXE
      PID:5196
  • C:\Windows\wmnesmgzxkiixqejuza.exe
    wmnesmgzxkiixqejuza.exe
    1⤵
    • Executes dropped EXE
    PID:4932
  • C:\Users\Admin\AppData\Local\Temp\jacujeztsgfgwqflxdfw.exe
    C:\Users\Admin\AppData\Local\Temp\jacujeztsgfgwqflxdfw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1752
  • C:\Users\Admin\AppData\Local\Temp\laaqdwpheqnmasfjtx.exe
    C:\Users\Admin\AppData\Local\Temp\laaqdwpheqnmasfjtx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4240
  • C:\Windows\yqtmcyuppeegxsipcjmeh.exe
    yqtmcyuppeegxsipcjmeh.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1580
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\yqtmcyuppeegxsipcjmeh.exe*."
      2⤵
      • Executes dropped EXE
      PID:556
  • C:\Users\Admin\AppData\Local\Temp\cqpeqiarnyusfwilu.exe
    C:\Users\Admin\AppData\Local\Temp\cqpeqiarnyusfwilu.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2576
  • C:\Windows\vigufwndyidamcnp.exe
    vigufwndyidamcnp.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2472
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\vigufwndyidamcnp.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:4844
  • C:\Windows\vigufwndyidamcnp.exe
    vigufwndyidamcnp.exe
    1⤵
    • Executes dropped EXE
    PID:2532
  • C:\Users\Admin\AppData\Local\Temp\yqtmcyuppeegxsipcjmeh.exe
    C:\Users\Admin\AppData\Local\Temp\yqtmcyuppeegxsipcjmeh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:6072
  • C:\Windows\jacujeztsgfgwqflxdfw.exe
    jacujeztsgfgwqflxdfw.exe
    1⤵
    • Executes dropped EXE
    PID:5620

Network

        MITRE ATT&CK Enterprise v16

        Reconnaissance

        Resource Development

        Initial Access

        Replication Through Removable Media

        1
        T1091

        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

        Replication Through Removable Media

        1
        T1091

        Collection

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        awdauuutxquavuozqbiel.ccc
        • Path C:\Program Files (x86)\awdauuutxquavuozqbiel.ccc
        • Size 280B
        • SHA256 554c585132b24cdc3ee9062a0bbd1212f9162e7390b0f36734b80d7bec6dec6f
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        awdauuutxquavuozqbiel.ccc
        • Path C:\Program Files (x86)\awdauuutxquavuozqbiel.ccc
        • Size 280B
        • SHA256 2d06e3c0c3df68794c36e50755c226da7dd40efbf72c5d43eee6d2be269a3196
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        awdauuutxquavuozqbiel.ccc
        • Path C:\Program Files (x86)\awdauuutxquavuozqbiel.ccc
        • Size 280B
        • SHA256 3ca26fd6fdaf66b2b79022b414ff66935e255485fb94c0254f163d071bba4c7c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        awdauuutxquavuozqbiel.ccc
        • Path C:\Program Files (x86)\awdauuutxquavuozqbiel.ccc
        • Size 280B
        • SHA256 b4c5518d9ad9006d80427146f28a45fe7158bf87e7bdcef6cd05d7385aaaaa30
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        umtekhkhewd.exe
        • Path C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
        • Size 320KB
        • SHA256 2239de2f1c07d9858c842bf1d08b050285c2737d3fa81e12ee56074168f07b1a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        wapuwem.exe
        • Path C:\Users\Admin\AppData\Local\Temp\wapuwem.exe
        • Size 716KB
        • SHA256 b6b427d3ec72d8414e07f79d7d1b9847ecc1b97a28bf4244aa931836c9734388
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        awdauuutxquavuozqbiel.ccc
        • Path C:\Users\Admin\AppData\Local\awdauuutxquavuozqbiel.ccc
        • Size 280B
        • SHA256 0ca784d488d303554e90c574892fad005f4effc6aa6053a2ee2a6a2729aac001
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        vcuchsdncgvmschdfbtasafqblaetkqa.bdz
        • Path C:\Users\Admin\AppData\Local\vcuchsdncgvmschdfbtasafqblaetkqa.bdz
        • Size 4KB
        • SHA256 76723d61415bab7ee86f8d06522adcc39438f614c9d92ff7b5a8c44643df4533
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        laaqdwpheqnmasfjtx.exe
        • Path C:\Windows\SysWOW64\laaqdwpheqnmasfjtx.exe
        • Size 1016KB
        • SHA256 81275952478c989e3792f397f101cb5b1ec01fe782f5bb418ac6df550c633b55
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        vcuchsdncg.bat
        • Path C:\vcuchsdncg.bat
        • Size 468KB
        • SHA256 008b106bb49c196499b03d3e1f6db1257c7aaa9ee63a3164dfd31ac8d2bf7661
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download