Overview

overview

10

Static

static

3

tmp1kmdlafb.exe

windows10-ltsc_2021-x64

10

tmp1kmdlafb.exe

windows10-2004-x64

10

tmp1kmdlafb.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    158s
  • 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, 03:32

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    tmp1kmdlafb.exe
  • Size 480KB
  • Sample260602-d3pgfses9n
  • SHA256 2e7aa86c211bcba2701f0d5acd491714bcbaf5f5cd6e930bc9795fdfb2a7f859
  • 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 35 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 autorun.inf file 1 TTPs 4 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 64 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 55 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\tmp1kmdlafb.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp1kmdlafb.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4320
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\users\admin\appdata\local\temp\tmp1kmdlafb.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:2144
      • C:\Users\Admin\AppData\Local\Temp\opyakr.exe
        "C:\Users\Admin\AppData\Local\Temp\opyakr.exe" "-c:\users\admin\appdata\local\temp\tmp1kmdlafb.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:3044
      • C:\Users\Admin\AppData\Local\Temp\opyakr.exe
        "C:\Users\Admin\AppData\Local\Temp\opyakr.exe" "-c:\users\admin\appdata\local\temp\tmp1kmdlafb.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:2388
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\users\admin\appdata\local\temp\tmp1kmdlafb.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:2940
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:5952
  • C:\Windows\htnavncunbpnngbzk.exe
    htnavncunbpnngbzk.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4796
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\htnavncunbpnngbzk.exe*."
      2⤵
      • Executes dropped EXE
      PID:3068
  • C:\Windows\dtrihdwsphzbfcbdswmkb.exe
    dtrihdwsphzbfcbdswmkb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4308
  • C:\Windows\aleqkbpgylyvumgd.exe
    aleqkbpgylyvumgd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1508
  • C:\Windows\odaqojbwsjabeayznqfc.exe
    odaqojbwsjabeayznqfc.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3152
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\odaqojbwsjabeayznqfc.exe*."
      2⤵
      • Executes dropped EXE
      PID:3156
  • C:\Users\Admin\AppData\Local\Temp\dtrihdwsphzbfcbdswmkb.exe
    C:\Users\Admin\AppData\Local\Temp\dtrihdwsphzbfcbdswmkb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2124
  • C:\Users\Admin\AppData\Local\Temp\odaqojbwsjabeayznqfc.exe
    C:\Users\Admin\AppData\Local\Temp\odaqojbwsjabeayznqfc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1036
  • C:\Windows\htnavncunbpnngbzk.exe
    htnavncunbpnngbzk.exe
    1⤵
    • Executes dropped EXE
    PID:4960
  • C:\Windows\qdymibrketihicyxjk.exe
    qdymibrketihicyxjk.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4708
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\qdymibrketihicyxjk.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:1096
  • C:\Windows\odaqojbwsjabeayznqfc.exe
    odaqojbwsjabeayznqfc.exe
    1⤵
    • Executes dropped EXE
    PID:236
  • C:\Windows\bplaxricxnddfaxxkma.exe
    bplaxricxnddfaxxkma.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5064
  • C:\Windows\dtrihdwsphzbfcbdswmkb.exe
    dtrihdwsphzbfcbdswmkb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5248
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\dtrihdwsphzbfcbdswmkb.exe*."
      2⤵
      • Executes dropped EXE
      PID:2480
  • C:\Users\Admin\AppData\Local\Temp\bplaxricxnddfaxxkma.exe
    C:\Users\Admin\AppData\Local\Temp\bplaxricxnddfaxxkma.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4824
  • C:\Users\Admin\AppData\Local\Temp\qdymibrketihicyxjk.exe
    C:\Users\Admin\AppData\Local\Temp\qdymibrketihicyxjk.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4932
  • C:\Windows\bplaxricxnddfaxxkma.exe
    bplaxricxnddfaxxkma.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3776
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\bplaxricxnddfaxxkma.exe*."
      2⤵
      • Executes dropped EXE
      PID:2380
  • C:\Users\Admin\AppData\Local\Temp\htnavncunbpnngbzk.exe
    C:\Users\Admin\AppData\Local\Temp\htnavncunbpnngbzk.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2056
  • C:\Windows\qdymibrketihicyxjk.exe
    qdymibrketihicyxjk.exe
    1⤵
    • Executes dropped EXE
    PID:3256
  • C:\Users\Admin\AppData\Local\Temp\aleqkbpgylyvumgd.exe
    C:\Users\Admin\AppData\Local\Temp\aleqkbpgylyvumgd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1196
  • C:\Windows\aleqkbpgylyvumgd.exe
    aleqkbpgylyvumgd.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3496
    • C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
      "C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe" "c:\windows\aleqkbpgylyvumgd.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:5552

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

        fbfchjiknljrbejrmwswtya.bec
        • Path C:\Program Files (x86)\fbfchjiknljrbejrmwswtya.bec
        • Size 120B
        • SHA256 122f43bba41cd0fb6df33c5c461c36d0a3fe87cbf3aeba1488e9d2f1ee8f0bea
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        fbfchjiknljrbejrmwswtya.bec
        • Path C:\Program Files (x86)\fbfchjiknljrbejrmwswtya.bec
        • Size 120B
        • SHA256 88fa0943a51d94e7891c0f0f68247c751ba75afa35567e747cd547c86ec7073c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        fbfchjiknljrbejrmwswtya.bec
        • Path C:\Program Files (x86)\fbfchjiknljrbejrmwswtya.bec
        • Size 120B
        • SHA256 6381b09f66d529d9334eda38ee59cddf49b3809d7667a0fb32a14e15b1655b1f
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        opyakr.exe
        • Path C:\Users\Admin\AppData\Local\Temp\opyakr.exe
        • Size 676KB
        • SHA256 550fecdf87c8b8a7a8058a763f5785d9372511addca22a19780b349d3b6bd3f4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        sasmzoglckc.exe
        • Path C:\Users\Admin\AppData\Local\Temp\sasmzoglckc.exe
        • Size 308KB
        • SHA256 6fff20aabe8265b6e811c9dbcb987f9c15cf07d1d8b80ced7b287d96900f5c62
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        fbfchjiknljrbejrmwswtya.bec
        • Path C:\Users\Admin\AppData\Local\fbfchjiknljrbejrmwswtya.bec
        • Size 120B
        • SHA256 40aaf838d4489cbe6bfb1d8c8cff8987bf4fa74d253dd387ce0dae1e29c5404e
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        szowmzjwktcvqeuntovksivfsgpyrmaqjp.rgo
        • Path C:\Users\Admin\AppData\Local\szowmzjwktcvqeuntovksivfsgpyrmaqjp.rgo
        • Size 3KB
        • SHA256 77f34c9e9f9b23c3be6dd6cf17c12173c5440045054bdecbd006f96fa0d254c5
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        qdymibrketihicyxjk.exe
        • Path C:\Windows\SysWOW64\qdymibrketihicyxjk.exe
        • Size 480KB
        • SHA256 2e7aa86c211bcba2701f0d5acd491714bcbaf5f5cd6e930bc9795fdfb2a7f859
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ulkccztqohadiggjzevumm.exe
        • Path C:\Windows\ulkccztqohadiggjzevumm.exe
        • Size 480KB
        • SHA256 ab97288c623eb6ec1e0665a937215a87c807b5c6c16f3696f3a59ce8067ce319
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        afsymxfqcj.bat
        • Path C:\afsymxfqcj.bat
        • Size 532KB
        • SHA256 5759cb34a1e4be31cd8317a82300b4a3aa81a93560f515a7074b9e389ffb6be8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download