Overview

overview

10

Static

static

3

tmp6tv4n76r.exe

windows10-2004-x64

10

tmp6tv4n76r.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    146s
  • 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, 14:07

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General

  • Target
    tmp6tv4n76r.exe
  • Size 1016KB
  • Sample260522-rfa77sfx5x
  • SHA256 1adfe64c20a9e0ec8625ef833b81288dbb1af3ebe44bf10903a87b372937d2e5
  • 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 7 IoCs
    persistence
  • UAC bypass 3 TTPs 16 IoCs
    defense_evasiontrojan
  • Adds policy Run key to start application 2 TTPs 39 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 14 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 3 IoCs

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

  • Drops file in System32 directory 53 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 53 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 44 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp6tv4n76r.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp6tv4n76r.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4780
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\users\admin\appdata\local\temp\tmp6tv4n76r.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:4892
      • C:\Users\Admin\AppData\Local\Temp\cclqu.exe
        "C:\Users\Admin\AppData\Local\Temp\cclqu.exe" "-C:\Users\Admin\AppData\Local\Temp\zkeujzkdziyuctmc.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:1760
      • C:\Users\Admin\AppData\Local\Temp\cclqu.exe
        "C:\Users\Admin\AppData\Local\Temp\cclqu.exe" "-C:\Users\Admin\AppData\Local\Temp\zkeujzkdziyuctmc.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:2784
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\users\admin\appdata\local\temp\tmp6tv4n76r.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:3348
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:2192
  • C:\Windows\csrmgbrpqezanjhcreqgf.exe
    csrmgbrpqezanjhcreqgf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3724
  • C:\Windows\aolewpdzykdcnhdwjue.exe
    aolewpdzykdcnhdwjue.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1532
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\windows\aolewpdzykdcnhdwjue.exe*."
      2⤵
      • Executes dropped EXE
      PID:2180
  • C:\Users\Admin\AppData\Local\Temp\ncaunhwttgaamheymyjy.exe
    C:\Users\Admin\AppData\Local\Temp\ncaunhwttgaamheymyjy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3648
  • C:\Users\Admin\AppData\Local\Temp\pcyqhzmhfqigqjewis.exe
    C:\Users\Admin\AppData\Local\Temp\pcyqhzmhfqigqjewis.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4004
  • C:\Windows\pcyqhzmhfqigqjewis.exe
    pcyqhzmhfqigqjewis.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2216
  • C:\Windows\gsneulxroypmvnhyj.exe
    gsneulxroypmvnhyj.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4828
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\windows\gsneulxroypmvnhyj.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:1832
  • C:\Windows\gsneulxroypmvnhyj.exe
    gsneulxroypmvnhyj.exe
    1⤵
    • Executes dropped EXE
    PID:4776
  • C:\Windows\zkeujzkdziyuctmc.exe
    zkeujzkdziyuctmc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4628
  • C:\Users\Admin\AppData\Local\Temp\gsneulxroypmvnhyj.exe
    C:\Users\Admin\AppData\Local\Temp\gsneulxroypmvnhyj.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4624
  • C:\Windows\ncaunhwttgaamheymyjy.exe
    ncaunhwttgaamheymyjy.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4460
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\windows\ncaunhwttgaamheymyjy.exe*."
      2⤵
      • Executes dropped EXE
      PID:4188
  • C:\Users\Admin\AppData\Local\Temp\csrmgbrpqezanjhcreqgf.exe
    C:\Users\Admin\AppData\Local\Temp\csrmgbrpqezanjhcreqgf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3336
  • C:\Windows\aolewpdzykdcnhdwjue.exe
    aolewpdzykdcnhdwjue.exe
    1⤵
    • Executes dropped EXE
    PID:232
  • C:\Windows\pcyqhzmhfqigqjewis.exe
    pcyqhzmhfqigqjewis.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1504
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\windows\pcyqhzmhfqigqjewis.exe*."
      2⤵
      • Executes dropped EXE
      PID:5072
  • C:\Users\Admin\AppData\Local\Temp\aolewpdzykdcnhdwjue.exe
    C:\Users\Admin\AppData\Local\Temp\aolewpdzykdcnhdwjue.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4012
  • C:\Users\Admin\AppData\Local\Temp\zkeujzkdziyuctmc.exe
    C:\Users\Admin\AppData\Local\Temp\zkeujzkdziyuctmc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1852
  • C:\Windows\csrmgbrpqezanjhcreqgf.exe
    csrmgbrpqezanjhcreqgf.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:732
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\windows\csrmgbrpqezanjhcreqgf.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:720
  • C:\Windows\ncaunhwttgaamheymyjy.exe
    ncaunhwttgaamheymyjy.exe
    1⤵
    • Executes dropped EXE
    PID:1980
  • C:\Windows\zkeujzkdziyuctmc.exe
    zkeujzkdziyuctmc.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2488
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\windows\zkeujzkdziyuctmc.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:2136

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

        System Information Discovery

        2
        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

        cclqu.exe
        • Path C:\Users\Admin\AppData\Local\Temp\cclqu.exe
        • Size 708KB
        • SHA256 81dfa0149c3fef481fc1b91537b6b4ba19da4834e0f9efe5a0a975cc42bdcb7b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        pgjvjuzczqt.exe
        • Path C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
        • Size 320KB
        • SHA256 117dd0955501b1ed31f270a79b914de4df6617acd9f80053ca32c4441b43c6cb
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        dyccbbwzfyyewxaaumdycc.bwz
        • Path C:\Users\Admin\AppData\Local\dyccbbwzfyyewxaaumdycc.bwz
        • Size 280B
        • SHA256 e054c6700aa4c509ef5d251aa298739b3a527909f881c4de2003b8b5fd7b2034
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        uapakvbpgkvmpbpafikqfqalrfwalcfrf.vya
        • Path C:\Users\Admin\AppData\Local\uapakvbpgkvmpbpafikqfqalrfwalcfrf.vya
        • Size 4KB
        • SHA256 ae47be34728d92fbc9dfbff5715ee74d828de47d86f66b4c406d20bec5f11d2d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        pcyqhzmhfqigqjewis.exe
        • Path C:\Windows\SysWOW64\pcyqhzmhfqigqjewis.exe
        • Size 1016KB
        • SHA256 1adfe64c20a9e0ec8625ef833b81288dbb1af3ebe44bf10903a87b372937d2e5
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download