Overview

overview

10

Static

static

3

tmp9cldh0qd.exe

windows10-ltsc_2021-x64

10

tmp9cldh0qd.exe

windows10-2004-x64

10

tmp9cldh0qd.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    159s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    22/05/2026, 14:20

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General

  • Target
    tmp9cldh0qd.exe
  • Size 1016KB
  • Sample260522-rnvltaf14s
  • SHA256 83f5dbae51966d8be59bca55d11ce234d0ae99d59a5a1fbc61c5b4f9d4f5d4b9
  • 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 7 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 8 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 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 42 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp9cldh0qd.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp9cldh0qd.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2476
    • C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe
      "C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe" "c:\users\admin\appdata\local\temp\tmp9cldh0qd.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:5084
      • C:\Users\Admin\AppData\Local\Temp\mougmn.exe
        "C:\Users\Admin\AppData\Local\Temp\mougmn.exe" "-C:\Users\Admin\AppData\Local\Temp\ykawmxsfrilasrsv.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:4772
      • C:\Users\Admin\AppData\Local\Temp\mougmn.exe
        "C:\Users\Admin\AppData\Local\Temp\mougmn.exe" "-C:\Users\Admin\AppData\Local\Temp\ykawmxsfrilasrsv.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:4832
    • C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe
      "C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe" "c:\users\admin\appdata\local\temp\tmp9cldh0qd.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:4144
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:3812
  • C:\Windows\mcwwqfevlgngcfkrzniy.exe
    mcwwqfevlgngcfkrzniy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2420
  • C:\Windows\bsnojzzriemgdhnvetpgb.exe
    bsnojzzriemgdhnvetpgb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5072
  • C:\Windows\ocuskxujxqvmghkpvh.exe
    ocuskxujxqvmghkpvh.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4976
    • C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe
      "C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe" "c:\windows\ocuskxujxqvmghkpvh.exe*."
      2⤵
      • Executes dropped EXE
      PID:228
  • C:\Windows\zohgznlbqkqidfjpwjd.exe
    zohgznlbqkqidfjpwjd.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2952
    • C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe
      "C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe" "c:\windows\zohgznlbqkqidfjpwjd.exe*."
      2⤵
      • Executes dropped EXE
      PID:4796
  • C:\Users\Admin\AppData\Local\Temp\mcwwqfevlgngcfkrzniy.exe
    C:\Users\Admin\AppData\Local\Temp\mcwwqfevlgngcfkrzniy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3036
  • C:\Users\Admin\AppData\Local\Temp\ocuskxujxqvmghkpvh.exe
    C:\Users\Admin\AppData\Local\Temp\ocuskxujxqvmghkpvh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:8
  • C:\Windows\fsjgxjftgycsllnrw.exe
    fsjgxjftgycsllnrw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3832
  • C:\Windows\zohgznlbqkqidfjpwjd.exe
    zohgznlbqkqidfjpwjd.exe
    1⤵
    • Executes dropped EXE
    PID:4148
  • C:\Windows\mcwwqfevlgngcfkrzniy.exe
    mcwwqfevlgngcfkrzniy.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4728
    • C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe
      "C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe" "c:\windows\mcwwqfevlgngcfkrzniy.exe*."
      2⤵
      • Executes dropped EXE
      PID:1844
  • C:\Users\Admin\AppData\Local\Temp\zohgznlbqkqidfjpwjd.exe
    C:\Users\Admin\AppData\Local\Temp\zohgznlbqkqidfjpwjd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2336
  • C:\Windows\ykawmxsfrilasrsv.exe
    ykawmxsfrilasrsv.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1380
  • C:\Windows\fsjgxjftgycsllnrw.exe
    fsjgxjftgycsllnrw.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:456
    • C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe
      "C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe" "c:\windows\fsjgxjftgycsllnrw.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:3744
  • C:\Users\Admin\AppData\Local\Temp\fsjgxjftgycsllnrw.exe
    C:\Users\Admin\AppData\Local\Temp\fsjgxjftgycsllnrw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1012
  • C:\Windows\bsnojzzriemgdhnvetpgb.exe
    bsnojzzriemgdhnvetpgb.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3544
    • C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe
      "C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe" "c:\windows\bsnojzzriemgdhnvetpgb.exe*."
      2⤵
      • Executes dropped EXE
      PID:116
  • C:\Users\Admin\AppData\Local\Temp\ykawmxsfrilasrsv.exe
    C:\Users\Admin\AppData\Local\Temp\ykawmxsfrilasrsv.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2152
  • C:\Users\Admin\AppData\Local\Temp\bsnojzzriemgdhnvetpgb.exe
    C:\Users\Admin\AppData\Local\Temp\bsnojzzriemgdhnvetpgb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3316
  • C:\Windows\ocuskxujxqvmghkpvh.exe
    ocuskxujxqvmghkpvh.exe
    1⤵
    • Executes dropped EXE
    PID:1628
  • C:\Windows\ykawmxsfrilasrsv.exe
    ykawmxsfrilasrsv.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2096
    • C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe
      "C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe" "c:\windows\ykawmxsfrilasrsv.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:1744

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

        Query Registry

        1
        T1012

        System Information Discovery

        3
        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

        dabijfljgiwwzjvjytvstab.dby
        • Path C:\Program Files (x86)\dabijfljgiwwzjvjytvstab.dby
        • Size 280B
        • SHA256 06de09c0d0cc3ecdd9087df3c8777de754491db4b43ffe4bb92e8daf76945e33
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        dabijfljgiwwzjvjytvstab.dby
        • Path C:\Program Files (x86)\dabijfljgiwwzjvjytvstab.dby
        • Size 280B
        • SHA256 f2a1aeebd3180aa9146b85a7bbb4945ad843b5b791e77e8547ba33c383ec9549
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        cmztpnmrmwj.exe
        • Path C:\Users\Admin\AppData\Local\Temp\cmztpnmrmwj.exe
        • Size 320KB
        • SHA256 5b1f26854c11b627c64bc919c32f2e88262473b0bf6e9f6d0d48fda509b34df6
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        mougmn.exe
        • Path C:\Users\Admin\AppData\Local\Temp\mougmn.exe
        • Size 712KB
        • SHA256 cd353fc5baa09aebb0798365afd4b7d804576c5e675eb4e8082c837c02e7ba5f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        dabijfljgiwwzjvjytvstab.dby
        • Path C:\Users\Admin\AppData\Local\dabijfljgiwwzjvjytvstab.dby
        • Size 280B
        • SHA256 73b8ac6b21989778fb05b61e9f9ed067128dcf1f1f224de604dc30bd98943b3a
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        dabijfljgiwwzjvjytvstab.dby
        • Path C:\Users\Admin\AppData\Local\dabijfljgiwwzjvjytvstab.dby
        • Size 280B
        • SHA256 0e638ddc0cdfc73ce7fd2abe28c13eef1306d517898c7ae611ff2f93a257bd6f
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        dabijfljgiwwzjvjytvstab.dby
        • Path C:\Users\Admin\AppData\Local\dabijfljgiwwzjvjytvstab.dby
        • Size 280B
        • SHA256 e21bc48d797ef34c26642651a9a750bc1a140fa4211bb66d82e681e9aa94c203
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        qykcovmvdqpaojgfflygskwdudlyxiwron.tgo
        • Path C:\Users\Admin\AppData\Local\qykcovmvdqpaojgfflygskwdudlyxiwron.tgo
        • Size 4KB
        • SHA256 69fe1362dba21f65beffc507f9ff2e1cba55ed420d1bea78a22f1988180d39a1
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ocuskxujxqvmghkpvh.exe
        • Path C:\Windows\SysWOW64\ocuskxujxqvmghkpvh.exe
        • Size 1016KB
        • SHA256 83f5dbae51966d8be59bca55d11ce234d0ae99d59a5a1fbc61c5b4f9d4f5d4b9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        yeoeotipvg.bat
        • Path C:\yeoeotipvg.bat
        • Size 520KB
        • SHA256 0ce8662c43860c10347e621f1302704ee9cb143e67f2c13c6b9ce2a11b0a4015
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download