Overview

overview

10

Static

static

3

tmp7g30s5ty.exe

windows10-ltsc_2021-x64

10

tmp7g30s5ty.exe

windows10-2004-x64

10

tmp7g30s5ty.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, 03:42

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General

  • Target
    tmp7g30s5ty.exe
  • Size 652KB
  • Sample260602-d9ektsds3x
  • SHA256 3f58e40fd44fda086235bf1c5a36a2fa8e50c90a229afa3ea18db4209da82347
  • 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 5 IoCs
    persistence
  • UAC bypass 3 TTPs 14 IoCs
    defense_evasiontrojan
  • Adds policy Run key to start application 2 TTPs 31 IoCs
    persistence
  • Disables RegEdit via registry modification 8 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 10 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 39 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 39 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 40 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp7g30s5ty.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp7g30s5ty.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4504
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\users\admin\appdata\local\temp\tmp7g30s5ty.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:2668
      • C:\Users\Admin\AppData\Local\Temp\hobbmp.exe
        "C:\Users\Admin\AppData\Local\Temp\hobbmp.exe" "-c:\users\admin\appdata\local\temp\tmp7g30s5ty.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:2632
      • C:\Users\Admin\AppData\Local\Temp\hobbmp.exe
        "C:\Users\Admin\AppData\Local\Temp\hobbmp.exe" "-c:\users\admin\appdata\local\temp\tmp7g30s5ty.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:2080
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\users\admin\appdata\local\temp\tmp7g30s5ty.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
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:4332
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:4540
  • C:\Windows\tkhrmzmbsiemdwmw.exe
    tkhrmzmbsiemdwmw.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1292
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\windows\tkhrmzmbsiemdwmw.exe*."
      2⤵
      • Executes dropped EXE
      PID:2464
  • C:\Windows\asqbxlzphyvewqhsb.exe
    asqbxlzphyvewqhsb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1364
  • C:\Windows\jcbnkzofyqoyrmeqad.exe
    jcbnkzofyqoyrmeqad.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3292
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\windows\jcbnkzofyqoyrmeqad.exe*."
      2⤵
      • Executes dropped EXE
      PID:2788
  • C:\Windows\uoobzpfxrkjuokdqbfz.exe
    uoobzpfxrkjuokdqbfz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3508
  • C:\Users\Admin\AppData\Local\Temp\jcbnkzofyqoyrmeqad.exe
    C:\Users\Admin\AppData\Local\Temp\jcbnkzofyqoyrmeqad.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3256
  • C:\Users\Admin\AppData\Local\Temp\hcdrqhyrmggsnkesejef.exe
    C:\Users\Admin\AppData\Local\Temp\hcdrqhyrmggsnkesejef.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2292
  • C:\Windows\tkhrmzmbsiemdwmw.exe
    tkhrmzmbsiemdwmw.exe
    1⤵
    • Executes dropped EXE
    PID:3436
  • C:\Windows\hcdrqhyrmggsnkesejef.exe
    hcdrqhyrmggsnkesejef.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4360
  • C:\Windows\uoobzpfxrkjuokdqbfz.exe
    uoobzpfxrkjuokdqbfz.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2100
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\windows\uoobzpfxrkjuokdqbfz.exe*."
      2⤵
      • Executes dropped EXE
      PID:4868
  • C:\Windows\asqbxlzphyvewqhsb.exe
    asqbxlzphyvewqhsb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4620
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\windows\asqbxlzphyvewqhsb.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
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System policy modification
      PID:3992
  • C:\Users\Admin\AppData\Local\Temp\asqbxlzphyvewqhsb.exe
    C:\Users\Admin\AppData\Local\Temp\asqbxlzphyvewqhsb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1996
  • C:\Users\Admin\AppData\Local\Temp\uoobzpfxrkjuokdqbfz.exe
    C:\Users\Admin\AppData\Local\Temp\uoobzpfxrkjuokdqbfz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4652
  • C:\Windows\wsujjbtnjefsomhwjplnc.exe
    wsujjbtnjefsomhwjplnc.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3256
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\windows\wsujjbtnjefsomhwjplnc.exe*."
      2⤵
      • Executes dropped EXE
      PID:4884
  • C:\Windows\hcdrqhyrmggsnkesejef.exe
    hcdrqhyrmggsnkesejef.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1248
    • C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
      "C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe" "c:\windows\hcdrqhyrmggsnkesejef.exe*."
      2⤵
      • Executes dropped EXE
      PID:3008
  • C:\Windows\wsujjbtnjefsomhwjplnc.exe
    wsujjbtnjefsomhwjplnc.exe
    1⤵
    • Executes dropped EXE
    PID:132
  • C:\Windows\jcbnkzofyqoyrmeqad.exe
    jcbnkzofyqoyrmeqad.exe
    1⤵
    • Executes dropped EXE
    PID:452
  • C:\Users\Admin\AppData\Local\Temp\wsujjbtnjefsomhwjplnc.exe
    C:\Users\Admin\AppData\Local\Temp\wsujjbtnjefsomhwjplnc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4608
  • C:\Users\Admin\AppData\Local\Temp\tkhrmzmbsiemdwmw.exe
    C:\Users\Admin\AppData\Local\Temp\tkhrmzmbsiemdwmw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4360

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

        yyexbxtrrqvmmongxhhng.gca
        • Path C:\Program Files (x86)\yyexbxtrrqvmmongxhhng.gca
        • Size 272B
        • SHA256 7cbe7b9d73c3d43114cb35079dcbd8915df9a8f5792943d9133c23bfdfbfd4f3
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        yyexbxtrrqvmmongxhhng.gca
        • Path C:\Program Files (x86)\yyexbxtrrqvmmongxhhng.gca
        • Size 272B
        • SHA256 eb302f73c46f37707210467711d2b8ea7dc70094cad6b3ab17cd44422f95293a
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        hobbmp.exe
        • Path C:\Users\Admin\AppData\Local\Temp\hobbmp.exe
        • Size 724KB
        • SHA256 a2685ec0be60722e9242fc8682a207c4c08530c3b21f978faa59b3ad4e40183d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        pgjvjuzczqt.exe
        • Path C:\Users\Admin\AppData\Local\Temp\pgjvjuzczqt.exe
        • Size 320KB
        • SHA256 346dd4f2750267d529d7acc4dc63ef641af587974550d72156e00bf1c3bb5035
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        tevzovclwgwyjwgkmhsjncjqzkukmxku.avg
        • Path C:\Users\Admin\AppData\Local\tevzovclwgwyjwgkmhsjncjqzkukmxku.avg
        • Size 3KB
        • SHA256 ddda32459dd2e6da5ced3d4ba361dc329ec1a0daf6b3b810c144a6e764d330ee
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        yyexbxtrrqvmmongxhhng.gca
        • Path C:\Users\Admin\AppData\Local\yyexbxtrrqvmmongxhhng.gca
        • Size 272B
        • SHA256 b53701e4e0d44d33b737fe445578e16c90994c5686beb9aeed39e52e83dcce12
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        jcbnkzofyqoyrmeqad.exe
        • Path C:\Windows\SysWOW64\jcbnkzofyqoyrmeqad.exe
        • Size 652KB
        • SHA256 3f58e40fd44fda086235bf1c5a36a2fa8e50c90a229afa3ea18db4209da82347
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/132-232-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/452-234-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/1248-230-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/1248-226-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/1292-58-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/1292-53-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/1364-56-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/1996-173-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/2100-191-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/2100-170-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/2292-102-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/3256-99-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/3256-228-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/3292-104-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/3292-93-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/3436-164-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/3436-240-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/3508-96-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/4360-167-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/4360-238-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/4504-239-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/4504-0-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/4608-236-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/4620-192-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/4620-172-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download

        memory/4652-175-0x0000000000400000-0x00000000004A3000-memory.dmp
        Download