Overview

overview

10

Static

static

3

cihuy/Book1.xls

windows11-21h2-x64

1

cihuy/Copy...2.xlsx

windows11-21h2-x64

1

cihuy/DAFT...I.docx

windows11-21h2-x64

1

cihuy/Gett...te.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    46s
  • max time network
    50s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260911-en
  • resource tags

    arch:x64arch:x86image:win11-20260911-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    30/09/2026, 11:34

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    cihuy/Getting Started with OneNote.exe
  • Size 588KB
  • Sample260930-npvrestgkf
  • SHA256 ca06b143ef906fd71901cfa9b798e0bff22d530dbe265b2ac1bf54d06e511545
  • 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 25 IoCs
    persistence
  • Disables RegEdit via registry modification 6 IoCs
    defense_evasion
  • 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 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 1 TTPs 4 IoCs

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

    discovery
  • 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).

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

    discovery
  • System Location Discovery: System Language Discovery 1 TTPs 20 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 42 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\cihuy\Getting Started with OneNote.exe
    "C:\Users\Admin\AppData\Local\Temp\cihuy\Getting Started with OneNote.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2164
    • C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe
      "C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe" "c:\users\admin\appdata\local\temp\cihuy\getting started with onenote.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:4056
      • C:\Users\Admin\AppData\Local\Temp\ucnsals.exe
        "C:\Users\Admin\AppData\Local\Temp\ucnsals.exe" "-C:\Users\Admin\AppData\Local\Temp\tkesjdtexicvtunb.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 Location Discovery: System Language Discovery
        • System policy modification
        PID:1988
      • C:\Users\Admin\AppData\Local\Temp\ucnsals.exe
        "C:\Users\Admin\AppData\Local\Temp\ucnsals.exe" "-C:\Users\Admin\AppData\Local\Temp\tkesjdtexicvtunb.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
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • System policy modification
        PID:1424
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:1108
  • C:\Windows\uolcwtmawkhdeievouy.exe
    uolcwtmawkhdeievouy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1604
  • C:\Windows\jcyohdvidqmhhkfvns.exe
    jcyohdvidqmhhkfvns.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3228
  • C:\Windows\wsrkgfaqoedbekibwekgf.exe
    wsrkgfaqoedbekibwekgf.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe
      "C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe" "c:\windows\wsrkgfaqoedbekibwekgf.exe*."
      2⤵
      • Executes dropped EXE
      PID:5028
  • C:\Users\Admin\AppData\Local\Temp\uolcwtmawkhdeievouy.exe
    C:\Users\Admin\AppData\Local\Temp\uolcwtmawkhdeievouy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2132
  • C:\Users\Admin\AppData\Local\Temp\hcasnlfurgebdifxrydy.exe
    C:\Users\Admin\AppData\Local\Temp\hcasnlfurgebdifxrydy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3880
  • C:\Windows\hcasnlfurgebdifxrydy.exe
    hcasnlfurgebdifxrydy.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4596
    • C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe
      "C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe" "c:\windows\hcasnlfurgebdifxrydy.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:1268
  • C:\Windows\asncupgsmytnmoixo.exe
    asncupgsmytnmoixo.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1828
  • C:\Windows\tkesjdtexicvtunb.exe
    tkesjdtexicvtunb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4304
  • C:\Users\Admin\AppData\Local\Temp\tkesjdtexicvtunb.exe
    C:\Users\Admin\AppData\Local\Temp\tkesjdtexicvtunb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4700
  • C:\Windows\hcasnlfurgebdifxrydy.exe
    hcasnlfurgebdifxrydy.exe
    1⤵
    • Executes dropped EXE
    PID:2548
  • C:\Users\Admin\AppData\Local\Temp\asncupgsmytnmoixo.exe
    C:\Users\Admin\AppData\Local\Temp\asncupgsmytnmoixo.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3712
  • C:\Windows\jcyohdvidqmhhkfvns.exe
    jcyohdvidqmhhkfvns.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2424
    • C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe
      "C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe" "c:\windows\jcyohdvidqmhhkfvns.exe*."
      2⤵
      • Executes dropped EXE
      PID:3548
  • C:\Users\Admin\AppData\Local\Temp\wsrkgfaqoedbekibwekgf.exe
    C:\Users\Admin\AppData\Local\Temp\wsrkgfaqoedbekibwekgf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:848
  • C:\Windows\uolcwtmawkhdeievouy.exe
    uolcwtmawkhdeievouy.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1372
    • C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe
      "C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe" "c:\windows\uolcwtmawkhdeievouy.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:3204
  • C:\Windows\wsrkgfaqoedbekibwekgf.exe
    wsrkgfaqoedbekibwekgf.exe
    1⤵
    • Executes dropped EXE
    PID:4412
  • C:\Windows\tkesjdtexicvtunb.exe
    tkesjdtexicvtunb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3460
    • C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe
      "C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe" "c:\windows\tkesjdtexicvtunb.exe*."
      2⤵
      • Executes dropped EXE
      PID:4440
  • C:\Windows\asncupgsmytnmoixo.exe
    asncupgsmytnmoixo.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4304
    • C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe
      "C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe" "c:\windows\asncupgsmytnmoixo.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:4172
  • C:\Users\Admin\AppData\Local\Temp\jcyohdvidqmhhkfvns.exe
    C:\Users\Admin\AppData\Local\Temp\jcyohdvidqmhhkfvns.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2076

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

        System Network Configuration Discovery

        2
        T1016

        Internet Connection Discovery

        1
        T1016.001

        Lateral Movement

        Collection

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        bekkntvsxuafpchhjylouuxd.che
        • Path C:\Program Files (x86)\bekkntvsxuafpchhjylouuxd.che
        • Size 280B
        • SHA256 e9bf5f31d79fcc14bc9bd2fd94bf92296f03e5bd0265f21a7a60e9d6cb2ba95d
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        bekkntvsxuafpchhjylouuxd.che
        • Path C:\Program Files (x86)\bekkntvsxuafpchhjylouuxd.che
        • Size 280B
        • SHA256 4e15b66c2ee3313665dd0f84ae6c394981ee46c9deee2fbed660096d4938ddf1
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        thawktecdrk.exe
        • Path C:\Users\Admin\AppData\Local\Temp\thawktecdrk.exe
        • Size 320KB
        • SHA256 96a44058d5d39a7eca28cfd8f8d10e0e6d19bf0e15a9ab15d5016f0e540f779b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ucnsals.exe
        • Path C:\Users\Admin\AppData\Local\Temp\ucnsals.exe
        • Size 712KB
        • SHA256 b9a56381e9efc9f8d89ec07604b49b8181ab198d8363a9d69c97616d272c7e30
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        bekkntvsxuafpchhjylouuxd.che
        • Path C:\Users\Admin\AppData\Local\bekkntvsxuafpchhjylouuxd.che
        • Size 280B
        • SHA256 6c255dc9b320eb2eee7bf4a2ae54e84e398394262dd88296b5de4f08c487f843
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        kypaofsaqypfayozmmkypaofsaqypfayozm.kyp
        • Path C:\Users\Admin\AppData\Local\kypaofsaqypfayozmmkypaofsaqypfayozm.kyp
        • Size 4KB
        • SHA256 05db6a20345c3b7956c804e3e0025cbee2e883d1d8e06ecf089a35bfc04e29b0
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        jcyohdvidqmhhkfvns.exe
        • Path C:\Windows\SysWOW64\jcyohdvidqmhhkfvns.exe
        • Size 588KB
        • SHA256 ca06b143ef906fd71901cfa9b798e0bff22d530dbe265b2ac1bf54d06e511545
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download