Overview

overview

10

Static

static

3

tmpy2e67wkp.exe

windows10-ltsc_2021-x64

10

tmpy2e67wkp.exe

windows10-2004-x64

10

tmpy2e67wkp.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    125s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    02/06/2026, 03:48

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General

  • Target
    tmpy2e67wkp.exe
  • Size 736KB
  • Sample260602-ecth6adt2y
  • SHA256 3e459c36d72abfc430934d835e538801239054ff3db1d2d7883b619a3dbbf9b4
  • 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 5 IoCs
    persistence
  • UAC bypass 3 TTPs 14 IoCs
    defense_evasiontrojan
  • Adds policy Run key to start application 2 TTPs 30 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 27 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 10 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 10 IoCs

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

  • 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 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 9 IoCs
  • System policy modification 1 TTPs 40 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpy2e67wkp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpy2e67wkp.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1984
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\users\admin\appdata\local\temp\tmpy2e67wkp.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:4952
      • C:\Users\Admin\AppData\Local\Temp\dbftt.exe
        "C:\Users\Admin\AppData\Local\Temp\dbftt.exe" "-C:\Users\Admin\AppData\Local\Temp\ajyxiyrgqhugpogy.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:980
      • C:\Users\Admin\AppData\Local\Temp\dbftt.exe
        "C:\Users\Admin\AppData\Local\Temp\dbftt.exe" "-C:\Users\Admin\AppData\Local\Temp\ajyxiyrgqhugpogy.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:4444
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\users\admin\appdata\local\temp\tmpy2e67wkp.exe"
      2⤵
        PID:1708
    • C:\Windows\explorer.exe
      Explorer.exe
      1⤵
      • Modifies registry class
      PID:1412
    • C:\Users\Admin\AppData\Local\Temp\drlpfayshdvmaebysirfz.exe
      C:\Users\Admin\AppData\Local\Temp\drlpfayshdvmaebysirfz.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1600
    • C:\Windows\obuxmgdwkfwmzcyunckx.exe
      obuxmgdwkfwmzcyunckx.exe .
      1⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4140
      • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
        "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\obuxmgdwkfwmzcyunckx.exe*."
        2⤵
        • Executes dropped EXE
        PID:5012
    • C:\Windows\hrhhtkeufxlyiibuk.exe
      hrhhtkeufxlyiibuk.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4916
    • C:\Windows\bnfhvokcpjzoacxskyf.exe
      bnfhvokcpjzoacxskyf.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2640
    • C:\Windows\bnfhvokcpjzoacxskyf.exe
      bnfhvokcpjzoacxskyf.exe .
      1⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2112
      • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
        "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\bnfhvokcpjzoacxskyf.exe*."
        2⤵
        • Executes dropped EXE
        PID:1196
    • C:\Users\Admin\AppData\Local\Temp\ajyxiyrgqhugpogy.exe
      C:\Users\Admin\AppData\Local\Temp\ajyxiyrgqhugpogy.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1104
    • C:\Windows\ajyxiyrgqhugpogy.exe
      ajyxiyrgqhugpogy.exe .
      1⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3308
      • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
        "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\ajyxiyrgqhugpogy.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:2596
    • C:\Windows\drlpfayshdvmaebysirfz.exe
      drlpfayshdvmaebysirfz.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4824
    • C:\Windows\qbstgytkwpesdeysjw.exe
      qbstgytkwpesdeysjw.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4524
    • C:\Windows\qbstgytkwpesdeysjw.exe
      qbstgytkwpesdeysjw.exe .
      1⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2692
      • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
        "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\qbstgytkwpesdeysjw.exe*."
        2⤵
        • Executes dropped EXE
        PID:4892
    • C:\Windows\hrhhtkeufxlyiibuk.exe
      hrhhtkeufxlyiibuk.exe .
      1⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1860
      • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
        "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\hrhhtkeufxlyiibuk.exe*."
        2⤵
        • Executes dropped EXE
        PID:648
    • C:\Users\Admin\AppData\Local\Temp\hrhhtkeufxlyiibuk.exe
      C:\Users\Admin\AppData\Local\Temp\hrhhtkeufxlyiibuk.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4556
    • C:\Users\Admin\AppData\Local\Temp\qbstgytkwpesdeysjw.exe
      C:\Users\Admin\AppData\Local\Temp\qbstgytkwpesdeysjw.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1104
    • C:\Users\Admin\AppData\Local\Temp\bnfhvokcpjzoacxskyf.exe
      C:\Users\Admin\AppData\Local\Temp\bnfhvokcpjzoacxskyf.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1768
    • C:\Users\Admin\AppData\Local\Temp\obuxmgdwkfwmzcyunckx.exe
      C:\Users\Admin\AppData\Local\Temp\obuxmgdwkfwmzcyunckx.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2188
    • C:\Windows\drlpfayshdvmaebysirfz.exe
      drlpfayshdvmaebysirfz.exe .
      1⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3228
      • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
        "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\drlpfayshdvmaebysirfz.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:1260
    • C:\Windows\obuxmgdwkfwmzcyunckx.exe
      obuxmgdwkfwmzcyunckx.exe
      1⤵
      • Executes dropped EXE
      PID:4384
    • C:\Windows\ajyxiyrgqhugpogy.exe
      ajyxiyrgqhugpogy.exe
      1⤵
      • Executes dropped EXE
      PID:4552

    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

          dbftt.exe
          • Path C:\Users\Admin\AppData\Local\Temp\dbftt.exe
          • Size 692KB
          • SHA256 e96c0a17e9f4b09a0275daa4109cf62da4a3fc9fa1b417dd5770e623d1411a4f
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          lswqdqagvcg.exe
          • Path C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
          • Size 320KB
          • SHA256 950ae6325984902ffe3d34acd632c45c3704816aee0768ab8bb693d2ae167a84
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          idepmotuqtsqlwaefcsnozwy.ead
          • Path C:\Users\Admin\AppData\Local\idepmotuqtsqlwaefcsnozwy.ead
          • Size 272B
          • SHA256 9c1a8f512d1b37d85b765e8489817ff78722429c71c8977d2656f381b8080e58
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          rxjfnaqcjxhqwshwiqrxjfnaqcjxhqwshwi.rxj
          • Path C:\Users\Admin\AppData\Local\rxjfnaqcjxhqwshwiqrxjfnaqcjxhqwshwi.rxj
          • Size 3KB
          • SHA256 c0e1f9a632a91831daea830631f61ac319087d1bc986d16a7bae602681ecc84a
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          qbstgytkwpesdeysjw.exe
          • Path C:\Windows\SysWOW64\qbstgytkwpesdeysjw.exe
          • Size 736KB
          • SHA256 3e459c36d72abfc430934d835e538801239054ff3db1d2d7883b619a3dbbf9b4
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download