Overview

overview

10

Static

static

3

tmpqa2649t1.exe

windows10-ltsc_2021-x64

10

tmpqa2649t1.exe

windows10-2004-x64

10

tmpqa2649t1.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • 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, 03:36

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General

  • Target
    tmpqa2649t1.exe
  • Size 1016KB
  • Sample260602-d5zp7set7n
  • SHA256 19bfc62f4162a8399e6c22f14721710d96007e027aaa8154e3d80bb725c360e4
  • 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
  • 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 17 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 39 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmpqa2649t1.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpqa2649t1.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\users\admin\appdata\local\temp\tmpqa2649t1.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:696
      • C:\Users\Admin\AppData\Local\Temp\aentbjm.exe
        "C:\Users\Admin\AppData\Local\Temp\aentbjm.exe" "-C:\Users\Admin\AppData\Local\Temp\zmetkbnfqiivznvz.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:496
      • C:\Users\Admin\AppData\Local\Temp\aentbjm.exe
        "C:\Users\Admin\AppData\Local\Temp\aentbjm.exe" "-C:\Users\Admin\AppData\Local\Temp\zmetkbnfqiivznvz.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:776
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\users\admin\appdata\local\temp\tmpqa2649t1.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:3964
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:1236
  • C:\Windows\gundvnatfyznshqvb.exe
    gundvnatfyznshqvb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4968
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\gundvnatfyznshqvb.exe*."
      2⤵
      • Executes dropped EXE
      PID:3900
  • C:\Windows\aqldxrgbpkndkbmtbse.exe
    aqldxrgbpkndkbmtbse.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1600
  • C:\Windows\curlhdurhejbkdqzjcqif.exe
    curlhdurhejbkdqzjcqif.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4696
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\curlhdurhejbkdqzjcqif.exe*."
      2⤵
      • Executes dropped EXE
      PID:1520
  • C:\Windows\curlhdurhejbkdqzjcqif.exe
    curlhdurhejbkdqzjcqif.exe
    1⤵
    • Executes dropped EXE
    PID:1112
  • C:\Users\Admin\AppData\Local\Temp\neatojzvkgkbjbnvewja.exe
    C:\Users\Admin\AppData\Local\Temp\neatojzvkgkbjbnvewja.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3448
  • C:\Windows\gundvnatfyznshqvb.exe
    gundvnatfyznshqvb.exe
    1⤵
    • Executes dropped EXE
    PID:588
  • C:\Windows\aqldxrgbpkndkbmtbse.exe
    aqldxrgbpkndkbmtbse.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3084
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\aqldxrgbpkndkbmtbse.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:3344
  • C:\Windows\zmetkbnfqiivznvz.exe
    zmetkbnfqiivznvz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4528
  • C:\Windows\neatojzvkgkbjbnvewja.exe
    neatojzvkgkbjbnvewja.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5064
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\neatojzvkgkbjbnvewja.exe*."
      2⤵
      • Executes dropped EXE
      PID:2396
  • C:\Users\Admin\AppData\Local\Temp\gundvnatfyznshqvb.exe
    C:\Users\Admin\AppData\Local\Temp\gundvnatfyznshqvb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1000
  • C:\Users\Admin\AppData\Local\Temp\zmetkbnfqiivznvz.exe
    C:\Users\Admin\AppData\Local\Temp\zmetkbnfqiivznvz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2680
  • C:\Users\Admin\AppData\Local\Temp\aqldxrgbpkndkbmtbse.exe
    C:\Users\Admin\AppData\Local\Temp\aqldxrgbpkndkbmtbse.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:452
  • C:\Windows\zmetkbnfqiivznvz.exe
    zmetkbnfqiivznvz.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4456
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\zmetkbnfqiivznvz.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:3524
  • C:\Users\Admin\AppData\Local\Temp\peypibpjwqshndntaq.exe
    C:\Users\Admin\AppData\Local\Temp\peypibpjwqshndntaq.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:492
  • C:\Windows\peypibpjwqshndntaq.exe
    peypibpjwqshndntaq.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2924
    • C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
      "C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe" "c:\windows\peypibpjwqshndntaq.exe*."
      2⤵
      • Executes dropped EXE
      PID:1836
  • C:\Windows\neatojzvkgkbjbnvewja.exe
    neatojzvkgkbjbnvewja.exe
    1⤵
    • Executes dropped EXE
    PID:2100
  • C:\Users\Admin\AppData\Local\Temp\curlhdurhejbkdqzjcqif.exe
    C:\Users\Admin\AppData\Local\Temp\curlhdurhejbkdqzjcqif.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2336
  • C:\Windows\peypibpjwqshndntaq.exe
    peypibpjwqshndntaq.exe
    1⤵
    • Executes dropped EXE
    PID:4580

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

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        Downloads

        aentbjm.exe
        • Path C:\Users\Admin\AppData\Local\Temp\aentbjm.exe
        • Size 724KB
        • SHA256 3c4e352b7361ad255f7e9e997fa0a67a8168666872431297eb11670418a60010
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        zhgpsrrajrq.exe
        • Path C:\Users\Admin\AppData\Local\Temp\zhgpsrrajrq.exe
        • Size 320KB
        • SHA256 d3a242dec4eaf4e90adde2366a5ce7b2a6bf8317dc63bf6943c3d78cac061d75
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        dacbcdzbwyiftrjxmkdacb.dzb
        • Path C:\Users\Admin\AppData\Local\dacbcdzbwyiftrjxmkdacb.dzb
        • Size 280B
        • SHA256 fd03effc4ed8b463c1c98f2b15786a1a18f4f85f5be32b144b7b26cf7df242f1
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        ucpzlxerxkfnmvyxxgksfpbnuhnavdclo.nwa
        • Path C:\Users\Admin\AppData\Local\ucpzlxerxkfnmvyxxgksfpbnuhnavdclo.nwa
        • Size 4KB
        • SHA256 7ae81587214a1ffd597ea3712a09c2a72c10e934137a62888c774e5e085a064f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        peypibpjwqshndntaq.exe
        • Path C:\Windows\SysWOW64\peypibpjwqshndntaq.exe
        • Size 1016KB
        • SHA256 19bfc62f4162a8399e6c22f14721710d96007e027aaa8154e3d80bb725c360e4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download