Overview

overview

10

Static

static

3

tmpjiqdd1h6.exe

windows10-ltsc_2021-x64

10

tmpjiqdd1h6.exe

windows10-2004-x64

10

tmpjiqdd1h6.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
    02/06/2026, 03:45

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General

  • Target
    tmpjiqdd1h6.exe
  • Size 532KB
  • Sample260602-ebj84aew3q
  • SHA256 44486d706aceafbe98008d88664caba6c68c9b430c13968fe24fb5b7142b764b
  • 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 37 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\tmpjiqdd1h6.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpjiqdd1h6.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5100
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\users\admin\appdata\local\temp\tmpjiqdd1h6.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:2928
      • C:\Users\Admin\AppData\Local\Temp\yelqx.exe
        "C:\Users\Admin\AppData\Local\Temp\yelqx.exe" "-C:\Users\Admin\AppData\Local\Temp\vmeumbmixlyvumgd.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:4676
      • C:\Users\Admin\AppData\Local\Temp\yelqx.exe
        "C:\Users\Admin\AppData\Local\Temp\yelqx.exe" "-C:\Users\Admin\AppData\Local\Temp\vmeumbmixlyvumgd.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:1492
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\users\admin\appdata\local\temp\tmpjiqdd1h6.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:4076
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:5224
  • C:\Windows\wqlezrfewnddfaxxkhb.exe
    wqlezrfewnddfaxxkhb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4040
  • C:\Windows\jeauqjyyrjabeayznlgc.exe
    jeauqjyyrjabeayznlgc.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2432
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\jeauqjyyrjabeayznlgc.exe*."
      2⤵
      • Executes dropped EXE
      PID:3080
  • C:\Users\Admin\AppData\Local\Temp\cunexnzwmbpnngbzk.exe
    C:\Users\Admin\AppData\Local\Temp\cunexnzwmbpnngbzk.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2700
  • C:\Windows\vmeumbmixlyvumgd.exe
    vmeumbmixlyvumgd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4780
  • C:\Users\Admin\AppData\Local\Temp\jeauqjyyrjabeayznlgc.exe
    C:\Users\Admin\AppData\Local\Temp\jeauqjyyrjabeayznlgc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5472
  • C:\Windows\leyqkbomdtihicyxjf.exe
    leyqkbomdtihicyxjf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4720
  • C:\Users\Admin\AppData\Local\Temp\yurmjdtuohzbfcbdsrnkf.exe
    C:\Users\Admin\AppData\Local\Temp\yurmjdtuohzbfcbdsrnkf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1832
  • C:\Windows\yurmjdtuohzbfcbdsrnkf.exe
    yurmjdtuohzbfcbdsrnkf.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:752
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\yurmjdtuohzbfcbdsrnkf.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:5556
  • C:\Windows\vmeumbmixlyvumgd.exe
    vmeumbmixlyvumgd.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2912
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\vmeumbmixlyvumgd.exe*."
      2⤵
      • Executes dropped EXE
      PID:2012
  • C:\Windows\cunexnzwmbpnngbzk.exe
    cunexnzwmbpnngbzk.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3464
  • C:\Users\Admin\AppData\Local\Temp\wqlezrfewnddfaxxkhb.exe
    C:\Users\Admin\AppData\Local\Temp\wqlezrfewnddfaxxkhb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4788
  • C:\Windows\wqlezrfewnddfaxxkhb.exe
    wqlezrfewnddfaxxkhb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4644
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\wqlezrfewnddfaxxkhb.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:3200
  • C:\Users\Admin\AppData\Local\Temp\vmeumbmixlyvumgd.exe
    C:\Users\Admin\AppData\Local\Temp\vmeumbmixlyvumgd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2880
  • C:\Users\Admin\AppData\Local\Temp\leyqkbomdtihicyxjf.exe
    C:\Users\Admin\AppData\Local\Temp\leyqkbomdtihicyxjf.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3996
  • C:\Windows\yurmjdtuohzbfcbdsrnkf.exe
    yurmjdtuohzbfcbdsrnkf.exe
    1⤵
    • Executes dropped EXE
    PID:4176
  • C:\Windows\jeauqjyyrjabeayznlgc.exe
    jeauqjyyrjabeayznlgc.exe
    1⤵
    • Executes dropped EXE
    PID:2144
  • C:\Windows\cunexnzwmbpnngbzk.exe
    cunexnzwmbpnngbzk.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4568
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\cunexnzwmbpnngbzk.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:2944
  • C:\Windows\leyqkbomdtihicyxjf.exe
    leyqkbomdtihicyxjf.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5280
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\leyqkbomdtihicyxjf.exe*."
      2⤵
      • Executes dropped EXE
      PID:3240

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

        Loading Replay Monitor...

        Downloads

        acfgjjfmmljrbejrmrtwxaa.ddc
        • Path C:\Program Files (x86)\acfgjjfmmljrbejrmrtwxaa.ddc
        • Size 272B
        • SHA256 89db07a546d3b5a9e8416b12c26d1055abbbc12289e083ea15b50f58632c8a35
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        acfgjjfmmljrbejrmrtwxaa.ddc
        • Path C:\Program Files (x86)\acfgjjfmmljrbejrmrtwxaa.ddc
        • Size 272B
        • SHA256 948d975955bea96c3634f285b6d1a69d19941a895d5e42f081dac9ddf85a8158
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        acfgjjfmmljrbejrmrtwxaa.ddc
        • Path C:\Program Files (x86)\acfgjjfmmljrbejrmrtwxaa.ddc
        • Size 272B
        • SHA256 3a7b7063af07b206aa4a49fd64fa8fbf8cc61de1bc8277eef9590d2be94f11f9
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        acfgjjfmmljrbejrmrtwxaa.ddc
        • Path C:\Program Files (x86)\acfgjjfmmljrbejrmrtwxaa.ddc
        • Size 272B
        • SHA256 425bfaf50fca03bfcee622dfb0e5a1e9f54c4d25a253ec9040a36fa3c3b1f722
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        sasmzoglckc.exe
        • Path C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
        • Size 320KB
        • SHA256 b5643a7d0fe6085506e23f0f7a8ffdd41f0cb91aef9c4348dd724a5f743be5b9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        yelqx.exe
        • Path C:\Users\Admin\AppData\Local\Temp\yelqx.exe
        • Size 708KB
        • SHA256 fda0f00b34807fca0b00f5efa21cee57dadf6747ef4c600b5311cded0238ee87
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        acfgjjfmmljrbejrmrtwxaa.ddc
        • Path C:\Users\Admin\AppData\Local\acfgjjfmmljrbejrmrtwxaa.ddc
        • Size 272B
        • SHA256 ca09286e6dd601f0ace2156617cee5dfd312ada9734f947f4d78d7bcbc22ba0e
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        naoaozgyjtcvqeuntjwkwkvcufpyrmaqjp.sgs
        • Path C:\Users\Admin\AppData\Local\naoaozgyjtcvqeuntjwkwkvcufpyrmaqjp.sgs
        • Size 3KB
        • SHA256 3206fe956b25b743e88d9b2f9d9a16a53e30bf0918ced3cf13c6875e662905ef
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        leyqkbomdtihicyxjf.exe
        • Path C:\Windows\SysWOW64\leyqkbomdtihicyxjf.exe
        • Size 532KB
        • SHA256 44486d706aceafbe98008d88664caba6c68c9b430c13968fe24fb5b7142b764b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        luemwdgu.bat
        • Path C:\luemwdgu.bat
        • Size 556KB
        • SHA256 9249601177875e12cbb30ab7bdae02150d845ae90ad03fee04febaab19a63f5d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download