Overview

overview

10

Static

static

3

tmp_y6w6l0l.exe

windows10-ltsc_2021-x64

10

tmp_y6w6l0l.exe

windows10-2004-x64

10

tmp_y6w6l0l.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • 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, 03:45

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General

  • Target
    tmp_y6w6l0l.exe
  • Size 552KB
  • Sample260602-eba1esds8s
  • SHA256 83d542e1c32b412f997127a95b3aa12344d846aa83e865d9a67f315495747d41
  • 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 41 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 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 7 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 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 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 10 IoCs
  • System policy modification 1 TTPs 44 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp_y6w6l0l.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp_y6w6l0l.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2344
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\users\admin\appdata\local\temp\tmp_y6w6l0l.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:2740
      • C:\Users\Admin\AppData\Local\Temp\ecnns.exe
        "C:\Users\Admin\AppData\Local\Temp\ecnns.exe" "-C:\Users\Admin\AppData\Local\Temp\bkgrhdtazizohplv.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:3348
      • C:\Users\Admin\AppData\Local\Temp\ecnns.exe
        "C:\Users\Admin\AppData\Local\Temp\ecnns.exe" "-C:\Users\Admin\AppData\Local\Temp\bkgrhdtazizohplv.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:2112
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\users\admin\appdata\local\temp\tmp_y6w6l0l.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:1060
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:4188
  • C:\Windows\estjefamqeausfgvsysgh.exe
    estjefamqeausfgvsysgh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1052
  • C:\Users\Admin\AppData\Local\Temp\bkgrhdtazizohplv.exe
    C:\Users\Admin\AppData\Local\Temp\bkgrhdtazizohplv.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1748
  • C:\Windows\rcanfdvefqjavfdpjm.exe
    rcanfdvefqjavfdpjm.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4860
  • C:\Windows\estjefamqeausfgvsysgh.exe
    estjefamqeausfgvsysgh.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4504
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\estjefamqeausfgvsysgh.exe*."
      2⤵
      • Executes dropped EXE
      PID:2952
  • C:\Users\Admin\AppData\Local\Temp\ispbspgooyqgajgrk.exe
    C:\Users\Admin\AppData\Local\Temp\ispbspgooyqgajgrk.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4144
  • C:\Windows\pccrllfqtgburddrnsly.exe
    pccrllfqtgburddrnsly.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4164
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\pccrllfqtgburddrnsly.exe*."
      2⤵
      • Executes dropped EXE
      PID:1612
  • C:\Windows\rcanfdvefqjavfdpjm.exe
    rcanfdvefqjavfdpjm.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1260
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\rcanfdvefqjavfdpjm.exe*."
      2⤵
      • Executes dropped EXE
      PID:2556
  • C:\Windows\bkgrhdtazizohplv.exe
    bkgrhdtazizohplv.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3696
  • C:\Windows\bkgrhdtazizohplv.exe
    bkgrhdtazizohplv.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:8
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\bkgrhdtazizohplv.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:4788
  • C:\Windows\ispbspgooyqgajgrk.exe
    ispbspgooyqgajgrk.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:556
  • C:\Users\Admin\AppData\Local\Temp\conbutmwykewsdcpkog.exe
    C:\Users\Admin\AppData\Local\Temp\conbutmwykewsdcpkog.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3804
  • C:\Users\Admin\AppData\Local\Temp\estjefamqeausfgvsysgh.exe
    C:\Users\Admin\AppData\Local\Temp\estjefamqeausfgvsysgh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3680
  • C:\Windows\conbutmwykewsdcpkog.exe
    conbutmwykewsdcpkog.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1280
  • C:\Users\Admin\AppData\Local\Temp\pccrllfqtgburddrnsly.exe
    C:\Users\Admin\AppData\Local\Temp\pccrllfqtgburddrnsly.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4512
  • C:\Windows\pccrllfqtgburddrnsly.exe
    pccrllfqtgburddrnsly.exe
    1⤵
    • Executes dropped EXE
    PID:4604
  • C:\Windows\ispbspgooyqgajgrk.exe
    ispbspgooyqgajgrk.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4656
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\ispbspgooyqgajgrk.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:4676
  • C:\Windows\conbutmwykewsdcpkog.exe
    conbutmwykewsdcpkog.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3780
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\conbutmwykewsdcpkog.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:4696
  • C:\Users\Admin\AppData\Local\Temp\rcanfdvefqjavfdpjm.exe
    C:\Users\Admin\AppData\Local\Temp\rcanfdvefqjavfdpjm.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:556

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

        jemjltvozuxydxfbfstowtvd.yje
        • Path C:\Program Files (x86)\jemjltvozuxydxfbfstowtvd.yje
        • Size 272B
        • SHA256 cdc448dc8d447cf20a4699027995160569beb459994d322a6da9ff87f69a7de7
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        jemjltvozuxydxfbfstowtvd.yje
        • Path C:\Program Files (x86)\jemjltvozuxydxfbfstowtvd.yje
        • Size 272B
        • SHA256 cf919d46967adde9947568092b4a0329f3f4a35c8c59410187483c6921c672ce
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        jemjltvozuxydxfbfstowtvd.yje
        • Path C:\Program Files (x86)\jemjltvozuxydxfbfstowtvd.yje
        • Size 272B
        • SHA256 4cf3031897d8d9ddc77b6875207b89bae98e4c9548984975be414563e3a2c4ed
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        jemjltvozuxydxfbfstowtvd.yje
        • Path C:\Program Files (x86)\jemjltvozuxydxfbfstowtvd.yje
        • Size 272B
        • SHA256 000cca7cbc5f1c2b0e31ac0d45a0c54f0a8b4e1c18d45aae84b18a0c6175d756
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        ecnns.exe
        • Path C:\Users\Admin\AppData\Local\Temp\ecnns.exe
        • Size 688KB
        • SHA256 33d5f865ecc1f7d2820dd263583890e95a7a5d954702bd814585a14958ef211f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        qaorinawaky.exe
        • Path C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
        • Size 320KB
        • SHA256 c8c542ac3f6526d1501c2b9d6262bfa029a1ac0d9dd6b3c1965977abdd8bd126
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        jemjltvozuxydxfbfstowtvd.yje
        • Path C:\Users\Admin\AppData\Local\jemjltvozuxydxfbfstowtvd.yje
        • Size 272B
        • SHA256 51f0556d1956a8ae20bf695c67d16408117300a0c55e34309a025ff6e9de3b45
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        syrzmfswsymyotmtigsyrzmfswsymyotmti.syr
        • Path C:\Users\Admin\AppData\Local\syrzmfswsymyotmtigsyrzmfswsymyotmti.syr
        • Size 3KB
        • SHA256 7dc914d9a8167878d9676eee22a2577677ce4e4303a5d373c83200dd8000fcbc
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        rcanfdvefqjavfdpjm.exe
        • Path C:\Windows\SysWOW64\rcanfdvefqjavfdpjm.exe
        • Size 552KB
        • SHA256 83d542e1c32b412f997127a95b3aa12344d846aa83e865d9a67f315495747d41
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download