Overview

overview

10

Static

static

3

tmpfr7sguo8.exe

windows10-ltsc_2021-x64

10

tmpfr7sguo8.exe

windows10-2004-x64

10

tmpfr7sguo8.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    22/05/2026, 14:05

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General

  • Target
    tmpfr7sguo8.exe
  • Size 492KB
  • Sample260522-rd99hsds8j
  • SHA256 96641994ddd560ee2433fe91c84b389b54d72af8ec6170f84445ad5c5a747be4
  • 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 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 7 IoCs

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

  • Drops file in System32 directory 46 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 46 IoCs
  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 17 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\tmpfr7sguo8.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpfr7sguo8.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4756
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\users\admin\appdata\local\temp\tmpfr7sguo8.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:1640
      • C:\Users\Admin\AppData\Local\Temp\bglqs.exe
        "C:\Users\Admin\AppData\Local\Temp\bglqs.exe" "-C:\Users\Admin\AppData\Local\Temp\yoeuhytfujejxydt.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
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • System policy modification
        PID:2276
      • C:\Users\Admin\AppData\Local\Temp\bglqs.exe
        "C:\Users\Admin\AppData\Local\Temp\bglqs.exe" "-C:\Users\Admin\AppData\Local\Temp\yoeuhytfujejxydt.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:2716
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\users\admin\appdata\local\temp\tmpfr7sguo8.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:3624
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:5868
  • C:\Windows\zsleuombtljrimunghd.exe
    zsleuombtljrimunghd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4344
  • C:\Windows\bwrmeaarlffpioytorpkf.exe
    bwrmeaarlffpioytorpkf.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5952
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\bwrmeaarlffpioytorpkf.exe*."
      2⤵
      • Executes dropped EXE
      PID:5744
  • C:\Users\Admin\AppData\Local\Temp\yoeuhytfujejxydt.exe
    C:\Users\Admin\AppData\Local\Temp\yoeuhytfujejxydt.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5024
  • C:\Windows\ogyqfyvjarovlovnff.exe
    ogyqfyvjarovlovnff.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5880
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\ogyqfyvjarovlovnff.exe*."
      2⤵
      • Executes dropped EXE
      PID:5708
  • C:\Windows\bwrmeaarlffpioytorpkf.exe
    bwrmeaarlffpioytorpkf.exe
    1⤵
    • Executes dropped EXE
    PID:3712
  • C:\Users\Admin\AppData\Local\Temp\ogyqfyvjarovlovnff.exe
    C:\Users\Admin\AppData\Local\Temp\ogyqfyvjarovlovnff.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3456
  • C:\Windows\mgaulgfvohgphmvpjlic.exe
    mgaulgfvohgphmvpjlic.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3416
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\mgaulgfvohgphmvpjlic.exe*."
      2⤵
      • Executes dropped EXE
      PID:548
  • C:\Windows\mgaulgfvohgphmvpjlic.exe
    mgaulgfvohgphmvpjlic.exe
    1⤵
    • Executes dropped EXE
    PID:1188
  • C:\Windows\fwneskgtjzvbqsypg.exe
    fwneskgtjzvbqsypg.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1428
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\fwneskgtjzvbqsypg.exe*."
      2⤵
      • Executes dropped EXE
      PID:2108
  • C:\Users\Admin\AppData\Local\Temp\mgaulgfvohgphmvpjlic.exe
    C:\Users\Admin\AppData\Local\Temp\mgaulgfvohgphmvpjlic.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4672
  • C:\Users\Admin\AppData\Local\Temp\zsleuombtljrimunghd.exe
    C:\Users\Admin\AppData\Local\Temp\zsleuombtljrimunghd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2656
  • C:\Windows\ogyqfyvjarovlovnff.exe
    ogyqfyvjarovlovnff.exe
    1⤵
    • Executes dropped EXE
    PID:2848
  • C:\Windows\fwneskgtjzvbqsypg.exe
    fwneskgtjzvbqsypg.exe
    1⤵
    • Executes dropped EXE
    PID:2328
  • C:\Windows\yoeuhytfujejxydt.exe
    yoeuhytfujejxydt.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4416
  • C:\Users\Admin\AppData\Local\Temp\bwrmeaarlffpioytorpkf.exe
    C:\Users\Admin\AppData\Local\Temp\bwrmeaarlffpioytorpkf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:624
  • C:\Users\Admin\AppData\Local\Temp\fwneskgtjzvbqsypg.exe
    C:\Users\Admin\AppData\Local\Temp\fwneskgtjzvbqsypg.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:6140
  • C:\Windows\zsleuombtljrimunghd.exe
    zsleuombtljrimunghd.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:736
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\zsleuombtljrimunghd.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:1828
  • C:\Windows\yoeuhytfujejxydt.exe
    yoeuhytfujejxydt.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2132
    • C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
      "C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe" "c:\windows\yoeuhytfujejxydt.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:628
  • C:\Windows\system32\sc.exe
    C:\Windows\system32\sc.exe start wuauserv
    1⤵
    • Launches sc.exe
    PID:6096

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

        Query Registry

        1
        T1012

        System Information Discovery

        3
        T1082

        System Location Discovery

        1
        T1614

        System Language Discovery

        1
        T1614.001

        Lateral Movement

        Collection

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

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        Downloads

        bglqs.exe
        • Path C:\Users\Admin\AppData\Local\Temp\bglqs.exe
        • Size 704KB
        • SHA256 32bf9bc6808de8f644a7ad7e0c51a0699276b1ed9c8c60f3a8f2910bcf199603
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        vveaalwpffo.exe
        • Path C:\Users\Admin\AppData\Local\Temp\vveaalwpffo.exe
        • Size 320KB
        • SHA256 1849989ee704cda3b552b5021f3165012978d26d0daf7d22a09805deb6be2d0b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        cccczafbazetrcrrrzcccc.afb
        • Path C:\Users\Admin\AppData\Local\cccczafbazetrcrrrzcccc.afb
        • Size 272B
        • SHA256 f07ba8a3de2da9a641c2eb4888764ad992aff111cd0ee7717870040963a3d643
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        tepaiukrblbbkggrcvjufqykahrbrraww.slz
        • Path C:\Users\Admin\AppData\Local\tepaiukrblbbkggrcvjufqykahrbrraww.slz
        • Size 3KB
        • SHA256 575fef4ad6665df73329ca1381efc448a3edc5c9cf8d85c75dbe96df18e22caa
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        ogyqfyvjarovlovnff.exe
        • Path C:\Windows\SysWOW64\ogyqfyvjarovlovnff.exe
        • Size 492KB
        • SHA256 96641994ddd560ee2433fe91c84b389b54d72af8ec6170f84445ad5c5a747be4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download