Overview

overview

10

Static

static

3

tmpvhc90di2.exe

windows10-ltsc_2021-x64

10

tmpvhc90di2.exe

windows10-2004-x64

10

tmpvhc90di2.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    145s
  • 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, 03:05

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General

  • Target
    tmpvhc90di2.exe
  • Size 1016KB
  • Sample260602-dk9dxady3p
  • SHA256 7bc0f8b71a49a96ec2472fa260859594a79847382199fb2e6caf4fa6fca40292
  • 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 34 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
  • 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\tmpvhc90di2.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpvhc90di2.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4708
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\users\admin\appdata\local\temp\tmpvhc90di2.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:1992
      • C:\Users\Admin\AppData\Local\Temp\zejswdj.exe
        "C:\Users\Admin\AppData\Local\Temp\zejswdj.exe" "-C:\Users\Admin\AppData\Local\Temp\ymasfvkeqizohplv.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:1564
      • C:\Users\Admin\AppData\Local\Temp\zejswdj.exe
        "C:\Users\Admin\AppData\Local\Temp\zejswdj.exe" "-C:\Users\Admin\AppData\Local\Temp\ymasfvkeqizohplv.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:3516
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\users\admin\appdata\local\temp\tmpvhc90di2.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:4528
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3060
  • C:\Windows\ymasfvkeqizohplv.exe
    ymasfvkeqizohplv.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4060
  • C:\Windows\zqhcsldapkewsdcpkod.exe
    zqhcsldapkewsdcpkod.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2904
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\zqhcsldapkewsdcpkod.exe*."
      2⤵
      • Executes dropped EXE
      PID:1048
  • C:\Windows\mewsjdwukgburddrnsia.exe
    mewsjdwukgburddrnsia.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2220
  • C:\Users\Admin\AppData\Local\Temp\ymasfvkeqizohplv.exe
    C:\Users\Admin\AppData\Local\Temp\ymasfvkeqizohplv.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:432
  • C:\Users\Admin\AppData\Local\Temp\fujcqhxsfyqgajgrk.exe
    C:\Users\Admin\AppData\Local\Temp\fujcqhxsfyqgajgrk.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4544
  • C:\Windows\oeuodvmiwqjavfdpjm.exe
    oeuodvmiwqjavfdpjm.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2652
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\oeuodvmiwqjavfdpjm.exe*."
      2⤵
      • Executes dropped EXE
      PID:400
  • C:\Windows\bunkcxrqheausfgvsypib.exe
    bunkcxrqheausfgvsypib.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4956
  • C:\Windows\zqhcsldapkewsdcpkod.exe
    zqhcsldapkewsdcpkod.exe
    1⤵
    • Executes dropped EXE
    PID:1952
  • C:\Windows\bunkcxrqheausfgvsypib.exe
    bunkcxrqheausfgvsypib.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4652
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\bunkcxrqheausfgvsypib.exe*."
      2⤵
      • Executes dropped EXE
      PID:2388
  • C:\Windows\ymasfvkeqizohplv.exe
    ymasfvkeqizohplv.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4884
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\ymasfvkeqizohplv.exe*."
      2⤵
      • Executes dropped EXE
      PID:1888
  • C:\Windows\fujcqhxsfyqgajgrk.exe
    fujcqhxsfyqgajgrk.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2840
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\fujcqhxsfyqgajgrk.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:4544
  • C:\Users\Admin\AppData\Local\Temp\oeuodvmiwqjavfdpjm.exe
    C:\Users\Admin\AppData\Local\Temp\oeuodvmiwqjavfdpjm.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3336
  • C:\Users\Admin\AppData\Local\Temp\bunkcxrqheausfgvsypib.exe
    C:\Users\Admin\AppData\Local\Temp\bunkcxrqheausfgvsypib.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2740
  • C:\Windows\oeuodvmiwqjavfdpjm.exe
    oeuodvmiwqjavfdpjm.exe
    1⤵
    • Executes dropped EXE
    PID:2412
  • C:\Users\Admin\AppData\Local\Temp\mewsjdwukgburddrnsia.exe
    C:\Users\Admin\AppData\Local\Temp\mewsjdwukgburddrnsia.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1048
  • C:\Windows\fujcqhxsfyqgajgrk.exe
    fujcqhxsfyqgajgrk.exe
    1⤵
    • Executes dropped EXE
    PID:2704
  • C:\Users\Admin\AppData\Local\Temp\zqhcsldapkewsdcpkod.exe
    C:\Users\Admin\AppData\Local\Temp\zqhcsldapkewsdcpkod.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2268
  • C:\Windows\mewsjdwukgburddrnsia.exe
    mewsjdwukgburddrnsia.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1716
    • C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
      "C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe" "c:\windows\mewsjdwukgburddrnsia.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:2560

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

        Loading Replay Monitor...

        Downloads

        qaorinawaky.exe
        • Path C:\Users\Admin\AppData\Local\Temp\qaorinawaky.exe
        • Size 320KB
        • SHA256 69c341a207cf5acf362c13a6ba6c9dec0566253404b0773b4de288bedbcaf259
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        zejswdj.exe
        • Path C:\Users\Admin\AppData\Local\Temp\zejswdj.exe
        • Size 712KB
        • SHA256 b514491716a9722cb034f0e632ecb3fbe4db7e06872a14feb7fafc4ac68b8ad0
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        lmnssvxedimoupyvaonopuuxz.fko
        • Path C:\Users\Admin\AppData\Local\lmnssvxedimoupyvaonopuuxz.fko
        • Size 280B
        • SHA256 84755b1f41c56275c5f373e3e32fb6379c3f3adfb3965070e156f894537a275c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        qcoepdqisixkbhbjzyiugwhviakapctztbrq.myo
        • Path C:\Users\Admin\AppData\Local\qcoepdqisixkbhbjzyiugwhviakapctztbrq.myo
        • Size 4KB
        • SHA256 b371c7e1a55c29962324b77754ce7fd5b1dc972b16cd53f2dfa7ff1c099afb6e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        oeuodvmiwqjavfdpjm.exe
        • Path C:\Windows\SysWOW64\oeuodvmiwqjavfdpjm.exe
        • Size 1016KB
        • SHA256 7bc0f8b71a49a96ec2472fa260859594a79847382199fb2e6caf4fa6fca40292
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download