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
    149s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    02/06/2026, 03:05

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

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 33 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 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 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 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 40 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpvhc90di2.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpvhc90di2.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3984
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.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
      • 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:4488
      • C:\Users\Admin\AppData\Local\Temp\bejsaes.exe
        "C:\Users\Admin\AppData\Local\Temp\bejsaes.exe" "-C:\Users\Admin\AppData\Local\Temp\amasjwtcxiivznvz.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:1360
      • C:\Users\Admin\AppData\Local\Temp\bejsaes.exe
        "C:\Users\Admin\AppData\Local\Temp\bejsaes.exe" "-C:\Users\Admin\AppData\Local\Temp\amasjwtcxiivznvz.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:1232
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.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:3448
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:4452
  • C:\Windows\bqhcwmmywkndkbmtbsf.exe
    bqhcwmmywkndkbmtbsf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3232
  • C:\Users\Admin\AppData\Local\Temp\bqhcwmmywkndkbmtbsf.exe
    C:\Users\Admin\AppData\Local\Temp\bqhcwmmywkndkbmtbsf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3608
  • C:\Windows\bqhcwmmywkndkbmtbsf.exe
    bqhcwmmywkndkbmtbsf.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:956
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\bqhcwmmywkndkbmtbsf.exe*."
      2⤵
      • Executes dropped EXE
      PID:240
  • C:\Windows\qeuohwvgdqshndntaq.exe
    qeuohwvgdqshndntaq.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1196
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\qeuohwvgdqshndntaq.exe*."
      2⤵
      • Executes dropped EXE
      PID:1688
  • C:\Windows\hujcuigqmyznshqvb.exe
    hujcuigqmyznshqvb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3604
  • C:\Users\Admin\AppData\Local\Temp\oewsnefsrgkbjbnvewka.exe
    C:\Users\Admin\AppData\Local\Temp\oewsnefsrgkbjbnvewka.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1000
  • C:\Windows\dunkgyaooejbkdqzjcrib.exe
    dunkgyaooejbkdqzjcrib.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4240
  • C:\Windows\amasjwtcxiivznvz.exe
    amasjwtcxiivznvz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:440
  • C:\Users\Admin\AppData\Local\Temp\dunkgyaooejbkdqzjcrib.exe
    C:\Users\Admin\AppData\Local\Temp\dunkgyaooejbkdqzjcrib.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5104
  • C:\Windows\amasjwtcxiivznvz.exe
    amasjwtcxiivznvz.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:696
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\amasjwtcxiivznvz.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:1300
  • C:\Users\Admin\AppData\Local\Temp\amasjwtcxiivznvz.exe
    C:\Users\Admin\AppData\Local\Temp\amasjwtcxiivznvz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4600
  • C:\Users\Admin\AppData\Local\Temp\qeuohwvgdqshndntaq.exe
    C:\Users\Admin\AppData\Local\Temp\qeuohwvgdqshndntaq.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3008
  • C:\Windows\oewsnefsrgkbjbnvewka.exe
    oewsnefsrgkbjbnvewka.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3572
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\oewsnefsrgkbjbnvewka.exe*."
      2⤵
      • Executes dropped EXE
      PID:3128
  • C:\Windows\dunkgyaooejbkdqzjcrib.exe
    dunkgyaooejbkdqzjcrib.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3924
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\dunkgyaooejbkdqzjcrib.exe*."
      2⤵
      • Executes dropped EXE
      PID:4848
  • C:\Windows\qeuohwvgdqshndntaq.exe
    qeuohwvgdqshndntaq.exe
    1⤵
    • Executes dropped EXE
    PID:2116
  • C:\Windows\oewsnefsrgkbjbnvewka.exe
    oewsnefsrgkbjbnvewka.exe
    1⤵
    • Executes dropped EXE
    PID:668
  • C:\Users\Admin\AppData\Local\Temp\hujcuigqmyznshqvb.exe
    C:\Users\Admin\AppData\Local\Temp\hujcuigqmyznshqvb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4596
  • C:\Windows\hujcuigqmyznshqvb.exe
    hujcuigqmyznshqvb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4524
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\hujcuigqmyznshqvb.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:2532

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

        System Information Discovery

        2
        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

        bejsaes.exe
        • Path C:\Users\Admin\AppData\Local\Temp\bejsaes.exe
        • Size 708KB
        • SHA256 fab927bd8b59c9691a6145e8c002719f2d36cc81a66d924c6b4049eec23c6621
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        zhgpsrrajrq.exe
        • Path C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
        • Size 320KB
        • SHA256 c5adb172551d7a595ca89930aef42f39f0ac4aa7311c64c1d118f0e57fc19c4e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        fcbegemgmitrgfyndcxutwy.eye
        • Path C:\Users\Admin\AppData\Local\fcbegemgmitrgfyndcxutwy.eye
        • Size 280B
        • SHA256 a4072fe379ef1ed9c6ec02934ca267b948712e0e8d34f4c136113634e47b7540
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        sakylunsjqmvvfjjkuaisgtcvaryuddnrr.ciq
        • Path C:\Users\Admin\AppData\Local\sakylunsjqmvvfjjkuaisgtcvaryuddnrr.ciq
        • Size 4KB
        • SHA256 ce4faa372a56c7fdbdb1bfe29a35c0a06b3aa38b7bc9ce42dd54c22889eea137
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

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