Overview

overview

10

Static

static

3

tmp9izf8l1m.exe

windows10-ltsc_2021-x64

10

tmp9izf8l1m.exe

windows10-2004-x64

10

tmp9izf8l1m.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, 15:18

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General

  • Target
    tmp9izf8l1m.exe
  • Size 640KB
  • Sample260522-spv5eahx7z
  • SHA256 b7f14ca5c74288d372b0dc9e66bd34a7fb1b4d184246c5d63496f9677fd0af68
  • 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 33 IoCs
    persistence
  • Disables RegEdit via registry modification 9 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 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 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 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 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 42 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp9izf8l1m.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp9izf8l1m.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3920
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\users\admin\appdata\local\temp\tmp9izf8l1m.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:1068
      • C:\Users\Admin\AppData\Local\Temp\juayko.exe
        "C:\Users\Admin\AppData\Local\Temp\juayko.exe" "-c:\users\admin\appdata\local\temp\tmp9izf8l1m.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:1536
      • C:\Users\Admin\AppData\Local\Temp\juayko.exe
        "C:\Users\Admin\AppData\Local\Temp\juayko.exe" "-c:\users\admin\appdata\local\temp\tmp9izf8l1m.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:4696
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\users\admin\appdata\local\temp\tmp9izf8l1m.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
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:3988
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:2416
  • C:\Windows\wunyxogeujndkbmtbsa.exe
    wunyxogeujndkbmtbsa.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4788
  • C:\Windows\vqgokynivhivznvz.exe
    vqgokynivhivznvz.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:924
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\vqgokynivhivznvz.exe*."
      2⤵
      • Executes dropped EXE
      PID:3876
  • C:\Windows\jicoogzypfkbjbnvewfe.exe
    jicoogzypfkbjbnvewfe.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1916
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\jicoogzypfkbjbnvewfe.exe*."
      2⤵
      • Executes dropped EXE
      PID:2888
  • C:\Users\Admin\AppData\Local\Temp\vqgokynivhivznvz.exe
    C:\Users\Admin\AppData\Local\Temp\vqgokynivhivznvz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4952
  • C:\Windows\yytghauumdjbkdqzjcmmh.exe
    yytghauumdjbkdqzjcmmh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2484
  • C:\Users\Admin\AppData\Local\Temp\yytghauumdjbkdqzjcmmh.exe
    C:\Users\Admin\AppData\Local\Temp\yytghauumdjbkdqzjcmmh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1700
  • C:\Windows\cypyvkawkxznshqvb.exe
    cypyvkawkxznshqvb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:640
  • C:\Windows\liakiypmbpshndntaq.exe
    liakiypmbpshndntaq.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1812
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\liakiypmbpshndntaq.exe*."
      2⤵
      • Executes dropped EXE
      PID:2488
  • C:\Users\Admin\AppData\Local\Temp\cypyvkawkxznshqvb.exe
    C:\Users\Admin\AppData\Local\Temp\cypyvkawkxznshqvb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3604
  • C:\Windows\vqgokynivhivznvz.exe
    vqgokynivhivznvz.exe
    1⤵
    • Executes dropped EXE
    PID:1732
  • C:\Windows\cypyvkawkxznshqvb.exe
    cypyvkawkxznshqvb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2088
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\cypyvkawkxznshqvb.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
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:4948
  • C:\Users\Admin\AppData\Local\Temp\jicoogzypfkbjbnvewfe.exe
    C:\Users\Admin\AppData\Local\Temp\jicoogzypfkbjbnvewfe.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1700
  • C:\Users\Admin\AppData\Local\Temp\wunyxogeujndkbmtbsa.exe
    C:\Users\Admin\AppData\Local\Temp\wunyxogeujndkbmtbsa.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3160
  • C:\Windows\wunyxogeujndkbmtbsa.exe
    wunyxogeujndkbmtbsa.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3464
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\wunyxogeujndkbmtbsa.exe*."
      2⤵
      • Executes dropped EXE
      PID:3868
  • C:\Windows\liakiypmbpshndntaq.exe
    liakiypmbpshndntaq.exe
    1⤵
    • Executes dropped EXE
    PID:2096
  • C:\Windows\yytghauumdjbkdqzjcmmh.exe
    yytghauumdjbkdqzjcmmh.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4824
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\yytghauumdjbkdqzjcmmh.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
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:4988
  • C:\Users\Admin\AppData\Local\Temp\liakiypmbpshndntaq.exe
    C:\Users\Admin\AppData\Local\Temp\liakiypmbpshndntaq.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2324
  • C:\Windows\jicoogzypfkbjbnvewfe.exe
    jicoogzypfkbjbnvewfe.exe
    1⤵
    • Executes dropped EXE
    PID:3776

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

        pycyiknwxxmnfhdvoqjswscehq.rgh
        • Path C:\Program Files (x86)\pycyiknwxxmnfhdvoqjswscehq.rgh
        • Size 280B
        • SHA256 0dc4123b9ec17edb5a1a7760062a43c002112044d21ebb8fc983b0572aa6e37f
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        pycyiknwxxmnfhdvoqjswscehq.rgh
        • Path C:\Program Files (x86)\pycyiknwxxmnfhdvoqjswscehq.rgh
        • Size 280B
        • SHA256 dbb98c83beec25d8f9396f66bd7eceb8f241bd1f404d2086dc4694c491ac6d6c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        pycyiknwxxmnfhdvoqjswscehq.rgh
        • Path C:\Program Files (x86)\pycyiknwxxmnfhdvoqjswscehq.rgh
        • Size 280B
        • SHA256 e7fcbda0e48f56f9cf90a777149201d8a3749a385dc6a19919c4989297b5cfdb
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        pycyiknwxxmnfhdvoqjswscehq.rgh
        • Path C:\Program Files (x86)\pycyiknwxxmnfhdvoqjswscehq.rgh
        • Size 280B
        • SHA256 f5b7407dc01eb795d89e997f932a243c4902dba174bbd370949cb3f1e8eb554e
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        juayko.exe
        • Path C:\Users\Admin\AppData\Local\Temp\juayko.exe
        • Size 716KB
        • SHA256 2e8a26d4118fd8b712a2a06c125522711ba78afb3dcbe3b53a7c122866f1393e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        zhgpsrrajrq.exe
        • Path C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
        • Size 320KB
        • SHA256 dfb45eec7cd781fea7e0c8b522c0ec3406ca0c95dbbf97f4328c1bed116bdf95
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        pycyiknwxxmnfhdvoqjswscehq.rgh
        • Path C:\Users\Admin\AppData\Local\pycyiknwxxmnfhdvoqjswscehq.rgh
        • Size 280B
        • SHA256 49f7708e0bcd568976c15c4c1c07795a93afffd9780e1c2c45c8ba885b978d77
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        pycyiknwxxmnfhdvoqjswscehq.rgh
        • Path C:\Users\Admin\AppData\Local\pycyiknwxxmnfhdvoqjswscehq.rgh
        • Size 280B
        • SHA256 27f5f249ffd7748d22bf4cafda6bf96f01b893375cdadeede21e79b72d9ce868
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        pycyiknwxxmnfhdvoqjswscehq.rgh
        • Path C:\Users\Admin\AppData\Local\pycyiknwxxmnfhdvoqjswscehq.rgh
        • Size 280B
        • SHA256 2f48de4230e7ea5149a2479e98dacda1468902aff9a4624df93b68d9706f9884
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        qkzgbocwittfivcfjwaujqlymgsddpsfmptgk.tav
        • Path C:\Users\Admin\AppData\Local\qkzgbocwittfivcfjwaujqlymgsddpsfmptgk.tav
        • Size 4KB
        • SHA256 cec0de52cb5aceb968bc40fa6fed610db71a2caba090db058745dd25f477494f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        liakiypmbpshndntaq.exe
        • Path C:\Windows\SysWOW64\liakiypmbpshndntaq.exe
        • Size 640KB
        • SHA256 b7f14ca5c74288d372b0dc9e66bd34a7fb1b4d184246c5d63496f9677fd0af68
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download