Overview

overview

10

Static

static

3

tmp9fsplm0t.exe

windows10-ltsc_2021-x64

10

tmp9fsplm0t.exe

windows10-2004-x64

10

tmp9fsplm0t.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    22/05/2026, 15:20

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General

  • Target
    tmp9fsplm0t.exe
  • Size 548KB
  • Sample260522-sq37eahy4t
  • SHA256 47b0c68c97a03bd0a32d47e9f3b220078bf78d693b1ea661a29b8f8e13f4124d
  • 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 36 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 7 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 10 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 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\tmp9fsplm0t.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp9fsplm0t.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4492
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\users\admin\appdata\local\temp\tmp9fsplm0t.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:5796
      • C:\Users\Admin\AppData\Local\Temp\acnkt.exe
        "C:\Users\Admin\AppData\Local\Temp\acnkt.exe" "-C:\Users\Admin\AppData\Local\Temp\xkgoixqdujbkcptx.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:5448
      • C:\Users\Admin\AppData\Local\Temp\acnkt.exe
        "C:\Users\Admin\AppData\Local\Temp\acnkt.exe" "-C:\Users\Admin\AppData\Local\Temp\xkgoixqdujbkcptx.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:5984
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\users\admin\appdata\local\temp\tmp9fsplm0t.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:5836
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3540
  • C:\Windows\ncakgxsharlwqflric.exe
    ncakgxsharlwqflric.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2112
  • C:\Windows\espytjdrjzscvjotj.exe
    espytjdrjzscvjotj.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2080
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\windows\espytjdrjzscvjotj.exe*."
      2⤵
      • Executes dropped EXE
      PID:4748
  • C:\Users\Admin\AppData\Local\Temp\lccomfctohdqmdltmihy.exe
    C:\Users\Admin\AppData\Local\Temp\lccomfctohdqmdltmihy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3580
  • C:\Users\Admin\AppData\Local\Temp\ncakgxsharlwqflric.exe
    C:\Users\Admin\AppData\Local\Temp\ncakgxsharlwqflric.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5048
  • C:\Windows\lccomfctohdqmdltmihy.exe
    lccomfctohdqmdltmihy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:916
  • C:\Windows\astgfzxplfcqnfoxroogh.exe
    astgfzxplfcqnfoxroogh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5480
  • C:\Windows\astgfzxplfcqnfoxroogh.exe
    astgfzxplfcqnfoxroogh.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5644
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\windows\astgfzxplfcqnfoxroogh.exe*."
      2⤵
      • Executes dropped EXE
      PID:408
  • C:\Windows\ncakgxsharlwqflric.exe
    ncakgxsharlwqflric.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3880
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\windows\ncakgxsharlwqflric.exe*."
      2⤵
      • Executes dropped EXE
      PID:2420
  • C:\Windows\yonyvnjztlgsndkrjec.exe
    yonyvnjztlgsndkrjec.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5680
  • C:\Users\Admin\AppData\Local\Temp\espytjdrjzscvjotj.exe
    C:\Users\Admin\AppData\Local\Temp\espytjdrjzscvjotj.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5296
  • C:\Windows\lccomfctohdqmdltmihy.exe
    lccomfctohdqmdltmihy.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5272
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\windows\lccomfctohdqmdltmihy.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:1344
  • C:\Users\Admin\AppData\Local\Temp\xkgoixqdujbkcptx.exe
    C:\Users\Admin\AppData\Local\Temp\xkgoixqdujbkcptx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4968
  • C:\Users\Admin\AppData\Local\Temp\astgfzxplfcqnfoxroogh.exe
    C:\Users\Admin\AppData\Local\Temp\astgfzxplfcqnfoxroogh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2424
  • C:\Windows\espytjdrjzscvjotj.exe
    espytjdrjzscvjotj.exe
    1⤵
    • Executes dropped EXE
    PID:3612
  • C:\Windows\xkgoixqdujbkcptx.exe
    xkgoixqdujbkcptx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:984
  • C:\Users\Admin\AppData\Local\Temp\yonyvnjztlgsndkrjec.exe
    C:\Users\Admin\AppData\Local\Temp\yonyvnjztlgsndkrjec.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2388
  • C:\Windows\xkgoixqdujbkcptx.exe
    xkgoixqdujbkcptx.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5516
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\windows\xkgoixqdujbkcptx.exe*."
      2⤵
      • Executes dropped EXE
      PID:3844
  • C:\Windows\yonyvnjztlgsndkrjec.exe
    yonyvnjztlgsndkrjec.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3536
    • C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
      "C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe" "c:\windows\yonyvnjztlgsndkrjec.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:4628

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

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        Downloads

        rscygjqrwzfcijbtwclmwsadkl.tzw
        • Path C:\Program Files (x86)\rscygjqrwzfcijbtwclmwsadkl.tzw
        • Size 280B
        • SHA256 ce27c6dadc42f4b602d6ed70f094a6d0d9bda85c0395b6b15b0559437fcc772d
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        rscygjqrwzfcijbtwclmwsadkl.tzw
        • Path C:\Program Files (x86)\rscygjqrwzfcijbtwclmwsadkl.tzw
        • Size 280B
        • SHA256 06a3ccb4ce8b2659352530509a28f50010b993946f1b0a8d8d065f6db0afbbcd
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        acnkt.exe
        • Path C:\Users\Admin\AppData\Local\Temp\acnkt.exe
        • Size 692KB
        • SHA256 2a33ce9dbf9a40b337dd9e87cb952b96574165a48346fa4a2f00ad77e03c7292
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        swjrqpzmcgt.exe
        • Path C:\Users\Admin\AppData\Local\Temp\swjrqpzmcgt.exe
        • Size 320KB
        • SHA256 45b3323e5495451d668a0a4658a7b4f237df4c1886d21d12b13ed72c4bd6b200
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        rscygjqrwzfcijbtwclmwsadkl.tzw
        • Path C:\Users\Admin\AppData\Local\rscygjqrwzfcijbtwclmwsadkl.tzw
        • Size 280B
        • SHA256 6b9ba7ad820d906df59b8ae58c536e34d58e1755920f2927db3298d3f776ffa3
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        rscygjqrwzfcijbtwclmwsadkl.tzw
        • Path C:\Users\Admin\AppData\Local\rscygjqrwzfcijbtwclmwsadkl.tzw
        • Size 280B
        • SHA256 897d96193746e3fe18dfd277ec55bfd64d4c2f95956645d8efd2df3c31024166
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        rscygjqrwzfcijbtwclmwsadkl.tzw
        • Path C:\Users\Admin\AppData\Local\rscygjqrwzfcijbtwclmwsadkl.tzw
        • Size 280B
        • SHA256 5b378b483c36e0c1293f0934ba3b3300c3f3af3856eb8ad2562c1ace65a0a15d
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        sezgznfrhvmulxadricojqjxpbrfwevhknbsm.tat
        • Path C:\Users\Admin\AppData\Local\sezgznfrhvmulxadricojqjxpbrfwevhknbsm.tat
        • Size 4KB
        • SHA256 0e3355835853abb45d0f1d300c6d0130a930538570f07efcb2aa6902ee4915e4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ncakgxsharlwqflric.exe
        • Path C:\Windows\SysWOW64\ncakgxsharlwqflric.exe
        • Size 548KB
        • SHA256 47b0c68c97a03bd0a32d47e9f3b220078bf78d693b1ea661a29b8f8e13f4124d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        xeuwktgnyh.bat
        • Path C:\xeuwktgnyh.bat
        • Size 524KB
        • SHA256 c53d08a2d97a3d6d60255b3e08082138078ea5e162bcd97380cce2e06dbeaf0a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download