Analysis

  • max time kernel
    150s
  • max time network
    157s
  • 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, 14:48

General

  • Target
    tmpt7adq8_c.exe
  • Size 556KB
  • Sample260522-r6d2saev4l
  • SHA256 4f2e79bff34a37383bcc555b0ca392660d4f2354ce6d0fd1ed4146989745f391
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Pykspa

    Pykspa is a worm spreads via Skype uses DGA and it's written in C++.

  • Detect Pykspa worm 2 IoCs
  • Modifies WinLogon for persistence 2 TTPs 5 IoCs
  • UAC bypass 3 TTPs 14 IoCs
  • Adds policy Run key to start application 2 TTPs 31 IoCs
  • Disables RegEdit via registry modification 6 IoCs
  • Executes dropped EXE 28 IoCs
  • Impair Defenses: Safe Mode Boot 1 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 64 IoCs
  • Checks whether UAC is enabled 1 TTPs 10 IoCs
  • Hijack Execution Flow: Executable Installer File Permissions Weakness 1 TTPs 3 IoCs

    Possible Turn off User Account Control's privilege elevation for standard users.

  • 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 39 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 39 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.

  • 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 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpt7adq8_c.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpt7adq8_c.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1028
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\users\admin\appdata\local\temp\tmpt7adq8_c.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:800
      • C:\Users\Admin\AppData\Local\Temp\adqoegr.exe
        "C:\Users\Admin\AppData\Local\Temp\adqoegr.exe" "-C:\Users\Admin\AppData\Local\Temp\zlhonysdunkwmxzh.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:4512
      • C:\Users\Admin\AppData\Local\Temp\adqoegr.exe
        "C:\Users\Admin\AppData\Local\Temp\adqoegr.exe" "-C:\Users\Admin\AppData\Local\Temp\zlhonysdunkwmxzh.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:5056
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\users\admin\appdata\local\temp\tmpt7adq8_c.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:5200
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:5324
  • C:\Windows\gtqyykfrjdbofrudg.exe
    gtqyykfrjdbofrudg.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5888
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\gtqyykfrjdbofrudg.exe*."
      2⤵
      • Executes dropped EXE
      PID:3984
  • C:\Windows\zlhonysdunkwmxzh.exe
    zlhonysdunkwmxzh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3960
  • C:\Windows\zlhonysdunkwmxzh.exe
    zlhonysdunkwmxzh.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:856
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\zlhonysdunkwmxzh.exe*."
      2⤵
      • Executes dropped EXE
      PID:884
  • C:\Windows\apoyaolztppexlqbgla.exe
    apoyaolztppexlqbgla.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:652
  • C:\Users\Admin\AppData\Local\Temp\nddorgetolmcwlrdjpff.exe
    C:\Users\Admin\AppData\Local\Temp\nddorgetolmcwlrdjpff.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3308
  • C:\Users\Admin\AppData\Local\Temp\ctugkazpljlcxnuhovmnz.exe
    C:\Users\Admin\AppData\Local\Temp\ctugkazpljlcxnuhovmnz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1696
  • C:\Windows\apoyaolztppexlqbgla.exe
    apoyaolztppexlqbgla.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2136
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\apoyaolztppexlqbgla.exe*."
      2⤵
      • Executes dropped EXE
      PID:1608
  • C:\Users\Admin\AppData\Local\Temp\zlhonysdunkwmxzh.exe
    C:\Users\Admin\AppData\Local\Temp\zlhonysdunkwmxzh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3964
  • C:\Windows\pdbklyuhavuianrbfj.exe
    pdbklyuhavuianrbfj.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3484
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\pdbklyuhavuianrbfj.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:2884
  • C:\Users\Admin\AppData\Local\Temp\apoyaolztppexlqbgla.exe
    C:\Users\Admin\AppData\Local\Temp\apoyaolztppexlqbgla.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:6052
  • C:\Windows\ctugkazpljlcxnuhovmnz.exe
    ctugkazpljlcxnuhovmnz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4544
  • C:\Users\Admin\AppData\Local\Temp\gtqyykfrjdbofrudg.exe
    C:\Users\Admin\AppData\Local\Temp\gtqyykfrjdbofrudg.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5872
  • C:\Windows\nddorgetolmcwlrdjpff.exe
    nddorgetolmcwlrdjpff.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4848
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\nddorgetolmcwlrdjpff.exe*."
      2⤵
      • Executes dropped EXE
      PID:2404
  • C:\Windows\ctugkazpljlcxnuhovmnz.exe
    ctugkazpljlcxnuhovmnz.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2960
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\ctugkazpljlcxnuhovmnz.exe*."
      2⤵
      • Executes dropped EXE
      PID:3084
  • C:\Windows\pdbklyuhavuianrbfj.exe
    pdbklyuhavuianrbfj.exe
    1⤵
    • Executes dropped EXE
    PID:5088
  • C:\Windows\nddorgetolmcwlrdjpff.exe
    nddorgetolmcwlrdjpff.exe
    1⤵
    • Executes dropped EXE
    PID:2168
  • C:\Users\Admin\AppData\Local\Temp\pdbklyuhavuianrbfj.exe
    C:\Users\Admin\AppData\Local\Temp\pdbklyuhavuianrbfj.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3228
  • C:\Windows\gtqyykfrjdbofrudg.exe
    gtqyykfrjdbofrudg.exe
    1⤵
    • Executes dropped EXE
    PID:4764

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        ttdylksrwdoosrhdtjjtobaihm.eei

        • Path C:\Program Files (x86)\ttdylksrwdoosrhdtjjtobaihm.eei
        • Size 272B
        • SHA256 b9a1c4f339bfbfb706474945b71cf207af74a4b96d9726a074e0d6c75625f671
        • MD5 SHA1 SHA512 TLSH

        ttdylksrwdoosrhdtjjtobaihm.eei

        • Path C:\Program Files (x86)\ttdylksrwdoosrhdtjjtobaihm.eei
        • Size 272B
        • SHA256 c9cf31f057bb1f100bec0e4cc3bbccfc29c3f54f4205aaced4974b5e290e60cc
        • MD5 SHA1 SHA512 TLSH

        ttdylksrwdoosrhdtjjtobaihm.eei

        • Path C:\Program Files (x86)\ttdylksrwdoosrhdtjjtobaihm.eei
        • Size 272B
        • SHA256 67553d2da179adf79407c78a03548a4214d1b08196ab39c9519d9c28eaf1c160
        • MD5 SHA1 SHA512 TLSH

        ttdylksrwdoosrhdtjjtobaihm.eei

        • Path C:\Program Files (x86)\ttdylksrwdoosrhdtjjtobaihm.eei
        • Size 272B
        • SHA256 65a98d285200a49c5af0dd5b9fef7afd02d63edff2247dc4b238bc41a14030b0
        • MD5 SHA1 SHA512 TLSH

        adqoegr.exe

        • Path C:\Users\Admin\AppData\Local\Temp\adqoegr.exe
        • Size 680KB
        • SHA256 9abf3c7a29b7adab996c1bf34677f75937c166bfa3a9f1a6fd503f806442e185
        • MD5 SHA1 SHA512 SSDEEP TLSH

        umtekhkhewd.exe

        • Path C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
        • Size 320KB
        • SHA256 0cc02d34d5fd4cf892fed282f98c1ad3e7dd6159a8877ae5c46d3f834ed36060
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ttdylksrwdoosrhdtjjtobaihm.eei

        • Path C:\Users\Admin\AppData\Local\ttdylksrwdoosrhdtjjtobaihm.eei
        • Size 272B
        • SHA256 e8974dda075dde25fa2fc20b3fe3e54eda3c9229e4a232f5621a336e2139f55b
        • MD5 SHA1 SHA512 TLSH

        ufageohrhzvgvfgnopavbzjcmcuqbqabijkvq.uex

        • Path C:\Users\Admin\AppData\Local\ufageohrhzvgvfgnopavbzjcmcuqbqabijkvq.uex
        • Size 3KB
        • SHA256 9a107e3fc5110b459f73906d017da76bccf609aceb420f60160496375652f735
        • MD5 SHA1 SHA512 TLSH

        pdbklyuhavuianrbfj.exe

        • Path C:\Windows\SysWOW64\pdbklyuhavuianrbfj.exe
        • Size 556KB
        • SHA256 4f2e79bff34a37383bcc555b0ca392660d4f2354ce6d0fd1ed4146989745f391
        • MD5 SHA1 SHA512 SSDEEP TLSH