Overview

overview

10

Static

static

3

tmp7tahrmn5.exe

windows10-ltsc_2021-x64

10

tmp7tahrmn5.exe

windows10-2004-x64

10

tmp7tahrmn5.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • 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, 02:49

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General

  • Target
    tmp7tahrmn5.exe
  • Size 1016KB
  • Sample260602-dbbraadw2m
  • SHA256 383bd1a96891bc0ccfe0dc4131dd73273c82dc7667eb68f6c5aef189bd6511a5
  • 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 35 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 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 8 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 16 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\tmp7tahrmn5.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp7tahrmn5.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3308
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\users\admin\appdata\local\temp\tmp7tahrmn5.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:2212
      • C:\Users\Admin\AppData\Local\Temp\ubhxxkl.exe
        "C:\Users\Admin\AppData\Local\Temp\ubhxxkl.exe" "-C:\Users\Admin\AppData\Local\Temp\tjyxgcmirhugpogy.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:5112
      • C:\Users\Admin\AppData\Local\Temp\ubhxxkl.exe
        "C:\Users\Admin\AppData\Local\Temp\ubhxxkl.exe" "-C:\Users\Admin\AppData\Local\Temp\tjyxgcmirhugpogy.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:4624
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\users\admin\appdata\local\temp\tmp7tahrmn5.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:4544
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3104
  • C:\Windows\unfhtsfeqjzoacxskyy.exe
    unfhtsfeqjzoacxskyy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3628
  • C:\Windows\wrlpdetuidvmaebysikfz.exe
    wrlpdetuidvmaebysikfz.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4196
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\wrlpdetuidvmaebysikfz.exe*."
      2⤵
      • Executes dropped EXE
      PID:3304
  • C:\Windows\jbstecomxpesdeysjw.exe
    jbstecomxpesdeysjw.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2628
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\jbstecomxpesdeysjw.exe*."
      2⤵
      • Executes dropped EXE
      PID:4336
  • C:\Users\Admin\AppData\Local\Temp\hbuxkkyylfwmzcyuncdx.exe
    C:\Users\Admin\AppData\Local\Temp\hbuxkkyylfwmzcyuncdx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2600
  • C:\Windows\jbstecomxpesdeysjw.exe
    jbstecomxpesdeysjw.exe
    1⤵
    • Executes dropped EXE
    PID:4260
  • C:\Users\Admin\AppData\Local\Temp\jbstecomxpesdeysjw.exe
    C:\Users\Admin\AppData\Local\Temp\jbstecomxpesdeysjw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4684
  • C:\Windows\arhhrozwgxlyiibuk.exe
    arhhrozwgxlyiibuk.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4296
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\arhhrozwgxlyiibuk.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:228
  • C:\Windows\unfhtsfeqjzoacxskyy.exe
    unfhtsfeqjzoacxskyy.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1960
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\unfhtsfeqjzoacxskyy.exe*."
      2⤵
      • Executes dropped EXE
      PID:3800
  • C:\Users\Admin\AppData\Local\Temp\unfhtsfeqjzoacxskyy.exe
    C:\Users\Admin\AppData\Local\Temp\unfhtsfeqjzoacxskyy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1044
  • C:\Users\Admin\AppData\Local\Temp\wrlpdetuidvmaebysikfz.exe
    C:\Users\Admin\AppData\Local\Temp\wrlpdetuidvmaebysikfz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4452
  • C:\Windows\wrlpdetuidvmaebysikfz.exe
    wrlpdetuidvmaebysikfz.exe
    1⤵
    • Executes dropped EXE
    PID:4168
  • C:\Windows\tjyxgcmirhugpogy.exe
    tjyxgcmirhugpogy.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2736
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\tjyxgcmirhugpogy.exe*."
      2⤵
      • Executes dropped EXE
      PID:3964
  • C:\Windows\hbuxkkyylfwmzcyuncdx.exe
    hbuxkkyylfwmzcyuncdx.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3000
    • C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
      "C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe" "c:\windows\hbuxkkyylfwmzcyuncdx.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:3720
  • C:\Users\Admin\AppData\Local\Temp\tjyxgcmirhugpogy.exe
    C:\Users\Admin\AppData\Local\Temp\tjyxgcmirhugpogy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1560
  • C:\Windows\arhhrozwgxlyiibuk.exe
    arhhrozwgxlyiibuk.exe
    1⤵
    • Executes dropped EXE
    PID:4748
  • C:\Windows\tjyxgcmirhugpogy.exe
    tjyxgcmirhugpogy.exe
    1⤵
    • Executes dropped EXE
    PID:1440
  • C:\Windows\hbuxkkyylfwmzcyuncdx.exe
    hbuxkkyylfwmzcyuncdx.exe
    1⤵
    • Executes dropped EXE
    PID:740
  • C:\Users\Admin\AppData\Local\Temp\arhhrozwgxlyiibuk.exe
    C:\Users\Admin\AppData\Local\Temp\arhhrozwgxlyiibuk.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:832

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

        Query Registry

        1
        T1012

        System Information Discovery

        3
        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

        bdepksowrtsqlwaefclnozuc.gbd
        • Path C:\Program Files (x86)\bdepksowrtsqlwaefclnozuc.gbd
        • Size 280B
        • SHA256 64e181a28bb5de6a467cf2b3fdca8c6d46790994cb778156bc76566ec01b5018
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        bdepksowrtsqlwaefclnozuc.gbd
        • Path C:\Program Files (x86)\bdepksowrtsqlwaefclnozuc.gbd
        • Size 280B
        • SHA256 8369548246f52279c6ec98af071e479fae2931a113d3d6cf98d343d21a4a797c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        bdepksowrtsqlwaefclnozuc.gbd
        • Path C:\Program Files (x86)\bdepksowrtsqlwaefclnozuc.gbd
        • Size 280B
        • SHA256 67374982a904e854353c0be0e91fe573f4e295dcf37ec5b85017b56fe52a2b92
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        bdepksowrtsqlwaefclnozuc.gbd
        • Path C:\Program Files (x86)\bdepksowrtsqlwaefclnozuc.gbd
        • Size 280B
        • SHA256 65433cebce3d3f34302b692e65b2a66603c5e212968086bd086dfabab674afcb
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        bdepksowrtsqlwaefclnozuc.gbd
        • Path C:\Program Files (x86)\bdepksowrtsqlwaefclnozuc.gbd
        • Size 280B
        • SHA256 20cfefc6f8e6c477621e56fabeb99997eaa7359e2a1c2664e30230454645111d
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        lswqdqagvcg.exe
        • Path C:\Users\Admin\AppData\Local\Temp\lswqdqagvcg.exe
        • Size 320KB
        • SHA256 96659d34802d5303defdbdc4cb4205242413e091f24ab8c3c185d4aa33bc6faa
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ubhxxkl.exe
        • Path C:\Users\Admin\AppData\Local\Temp\ubhxxkl.exe
        • Size 716KB
        • SHA256 073475c135e6c3a8951804961e88f2fcda08cfec8429bbde5205ca75e056f9a3
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        bdepksowrtsqlwaefclnozuc.gbd
        • Path C:\Users\Admin\AppData\Local\bdepksowrtsqlwaefclnozuc.gbd
        • Size 280B
        • SHA256 460250909b3f15f5084167e6d57aaa69fae1b3930324d9ecef24ce3f9ded3de4
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        kxjflelekxhqwshwiqkxjflelekxhqwshwi.kxj
        • Path C:\Users\Admin\AppData\Local\kxjflelekxhqwshwiqkxjflelekxhqwshwi.kxj
        • Size 4KB
        • SHA256 e918d7d04e201e8eae5eb504e1993c4eb7da17afd2244cd648296a04fee35227
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        jbstecomxpesdeysjw.exe
        • Path C:\Windows\SysWOW64\jbstecomxpesdeysjw.exe
        • Size 1016KB
        • SHA256 383bd1a96891bc0ccfe0dc4131dd73273c82dc7667eb68f6c5aef189bd6511a5
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ajrjladsu.bat
        • Path C:\ajrjladsu.bat
        • Size 644KB
        • SHA256 59019eb941b9b93c496de00722aaae571d1365c0b74ea8bf2c195a74825efff1
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download