Overview

overview

10

Static

static

3

tmp66a2wtzl.exe

windows10-ltsc_2021-x64

10

tmp66a2wtzl.exe

windows10-2004-x64

10

tmp66a2wtzl.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • 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, 14:56

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General

  • Target
    tmp66a2wtzl.exe
  • Size 556KB
  • Sample260522-sbb5daex6l
  • SHA256 4a5dc0a8527388a5a96838556e49988c8e40a511e2f8ac3b19fd7db7fecfc92c
  • 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 4 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 19 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\tmp66a2wtzl.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp66a2wtzl.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3136
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\users\admin\appdata\local\temp\tmp66a2wtzl.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:4300
      • C:\Users\Admin\AppData\Local\Temp\outdfr.exe
        "C:\Users\Admin\AppData\Local\Temp\outdfr.exe" "-C:\Users\Admin\AppData\Local\Temp\aqztfbtgsjbzqfti.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:5048
      • C:\Users\Admin\AppData\Local\Temp\outdfr.exe
        "C:\Users\Admin\AppData\Local\Temp\outdfr.exe" "-C:\Users\Admin\AppData\Local\Temp\aqztfbtgsjbzqfti.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:4684
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\users\admin\appdata\local\temp\tmp66a2wtzl.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:1620
  • C:\Windows\oivtjjfwmhdfatlethke.exe
    oivtjjfwmhdfatlethke.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4396
  • C:\Windows\qitpdbvkyrllevlcpb.exe
    qitpdbvkyrllevlcpb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4568
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\windows\qitpdbvkyrllevlcpb.exe*."
      2⤵
      • Executes dropped EXE
      PID:4280
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:2916
  • C:\Windows\oivtjjfwmhdfatlethke.exe
    oivtjjfwmhdfatlethke.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2164
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\windows\oivtjjfwmhdfatlethke.exe*."
      2⤵
      • Executes dropped EXE
      PID:2588
  • C:\Users\Admin\AppData\Local\Temp\aqztfbtgsjbzqfti.exe
    C:\Users\Admin\AppData\Local\Temp\aqztfbtgsjbzqfti.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3148
  • C:\Windows\dymlcdasjfcfbvoiynrma.exe
    dymlcdasjfcfbvoiynrma.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4848
  • C:\Windows\hyidqnguhzsrjzoeq.exe
    hyidqnguhzsrjzoeq.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3384
  • C:\Windows\dymlcdasjfcfbvoiynrma.exe
    dymlcdasjfcfbvoiynrma.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4488
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\windows\dymlcdasjfcfbvoiynrma.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:1004
  • C:\Users\Admin\AppData\Local\Temp\oivtjjfwmhdfatlethke.exe
    C:\Users\Admin\AppData\Local\Temp\oivtjjfwmhdfatlethke.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2132
  • C:\Windows\aqztfbtgsjbzqfti.exe
    aqztfbtgsjbzqfti.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4892
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\windows\aqztfbtgsjbzqfti.exe*."
      2⤵
      • Executes dropped EXE
      PID:3388
  • C:\Windows\qitpdbvkyrllevlcpb.exe
    qitpdbvkyrllevlcpb.exe
    1⤵
    • Executes dropped EXE
    PID:4304
  • C:\Users\Admin\AppData\Local\Temp\hyidqnguhzsrjzoeq.exe
    C:\Users\Admin\AppData\Local\Temp\hyidqnguhzsrjzoeq.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3116
  • C:\Users\Admin\AppData\Local\Temp\qitpdbvkyrllevlcpb.exe
    C:\Users\Admin\AppData\Local\Temp\qitpdbvkyrllevlcpb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2268
  • C:\Users\Admin\AppData\Local\Temp\bugdsrmcrlghbtkcqdf.exe
    C:\Users\Admin\AppData\Local\Temp\bugdsrmcrlghbtkcqdf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3452
  • C:\Windows\bugdsrmcrlghbtkcqdf.exe
    bugdsrmcrlghbtkcqdf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2336
  • C:\Windows\hyidqnguhzsrjzoeq.exe
    hyidqnguhzsrjzoeq.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3124
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\windows\hyidqnguhzsrjzoeq.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:2004
  • C:\Windows\aqztfbtgsjbzqfti.exe
    aqztfbtgsjbzqfti.exe
    1⤵
    • Executes dropped EXE
    PID:4048
  • C:\Windows\bugdsrmcrlghbtkcqdf.exe
    bugdsrmcrlghbtkcqdf.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2112
    • C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
      "C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe" "c:\windows\bugdsrmcrlghbtkcqdf.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:1160
  • C:\Users\Admin\AppData\Local\Temp\dymlcdasjfcfbvoiynrma.exe
    C:\Users\Admin\AppData\Local\Temp\dymlcdasjfcfbvoiynrma.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2684

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

        System Information Discovery

        2
        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

        digpqbiklrylrvyccbpusbcnuwx.kxd
        • Path C:\Program Files (x86)\digpqbiklrylrvyccbpusbcnuwx.kxd
        • Size 272B
        • SHA256 1332c94cf93b58cfcc612f5eb6e5da71b91f3f2316beab345927e5fdd962db44
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        digpqbiklrylrvyccbpusbcnuwx.kxd
        • Path C:\Program Files (x86)\digpqbiklrylrvyccbpusbcnuwx.kxd
        • Size 272B
        • SHA256 b0156a18d3c8b6ccf7eb6cf20a102c2ac842ea2261ac2d385ed6a9d12cce7619
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        digpqbiklrylrvyccbpusbcnuwx.kxd
        • Path C:\Program Files (x86)\digpqbiklrylrvyccbpusbcnuwx.kxd
        • Size 272B
        • SHA256 ca7c0e4fcf119ef72b3565a8682fed179969c13e824d3161be724c81c17e841f
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        digpqbiklrylrvyccbpusbcnuwx.kxd
        • Path C:\Program Files (x86)\digpqbiklrylrvyccbpusbcnuwx.kxd
        • Size 272B
        • SHA256 5a1fcaf22543c97c7d5914a2c5debc4c49ea067b126a01d9d24f4436ea7ecb0b
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        digpqbiklrylrvyccbpusbcnuwx.kxd
        • Path C:\Program Files (x86)\digpqbiklrylrvyccbpusbcnuwx.kxd
        • Size 272B
        • SHA256 ebffb2ff0f1f73b1696f381648d913b62292ee11ec2790301232eff9f8a8fbff
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        digpqbiklrylrvyccbpusbcnuwx.kxd
        • Path C:\Program Files (x86)\digpqbiklrylrvyccbpusbcnuwx.kxd
        • Size 272B
        • SHA256 191b3b5a70589a08ee99804a1f03adc852120ea9ea88e0d18e27f5cfb1df22a2
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        outdfr.exe
        • Path C:\Users\Admin\AppData\Local\Temp\outdfr.exe
        • Size 688KB
        • SHA256 93008c39688688e9d8f310dddb88c949830cb960be4302422dbbe315abc3dbd4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        slxhqaglcvh.exe
        • Path C:\Users\Admin\AppData\Local\Temp\slxhqaglcvh.exe
        • Size 320KB
        • SHA256 0cc02d34d5fd4cf892fed282f98c1ad3e7dd6159a8877ae5c46d3f834ed36060
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        aqztfbtgsjbzqftitdcsbvhdviuldbshvkvfeu.xjf
        • Path C:\Users\Admin\AppData\Local\aqztfbtgsjbzqftitdcsbvhdviuldbshvkvfeu.xjf
        • Size 3KB
        • SHA256 e1e49a8dd8c89246b5dbe448bf2a9adfba6caaf201f04a114285f72c7eaf58c3
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        digpqbiklrylrvyccbpusbcnuwx.kxd
        • Path C:\Users\Admin\AppData\Local\digpqbiklrylrvyccbpusbcnuwx.kxd
        • Size 272B
        • SHA256 be33063ba1f17fa35fcc9a91a30ed905067cba26db582be2685bcfd61499ba08
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        qitpdbvkyrllevlcpb.exe
        • Path C:\Windows\SysWOW64\qitpdbvkyrllevlcpb.exe
        • Size 556KB
        • SHA256 4a5dc0a8527388a5a96838556e49988c8e40a511e2f8ac3b19fd7db7fecfc92c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download