Overview

overview

10

Static

static

3

tmpe042zxlo.exe

windows10-ltsc_2021-x64

10

tmpe042zxlo.exe

windows10-2004-x64

10

tmpe042zxlo.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    22/05/2026, 14:46

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    tmpe042zxlo.exe
  • Size 564KB
  • Sample260522-r5jwmsgx61
  • SHA256 d32d585693fabb35cdd7019a2b0e749715e4f5e23cf87d5ee3bf099aa36dfb7d
  • 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 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\tmpe042zxlo.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpe042zxlo.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:984
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\users\admin\appdata\local\temp\tmpe042zxlo.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:2520
      • C:\Users\Admin\AppData\Local\Temp\gnafgs.exe
        "C:\Users\Admin\AppData\Local\Temp\gnafgs.exe" "-C:\Users\Admin\AppData\Local\Temp\sjgvgcrfskdamcnp.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 Location Discovery: System Language Discovery
        • System policy modification
        PID:5548
      • C:\Users\Admin\AppData\Local\Temp\gnafgs.exe
        "C:\Users\Admin\AppData\Local\Temp\gnafgs.exe" "-C:\Users\Admin\AppData\Local\Temp\sjgvgcrfskdamcnp.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:3592
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\users\admin\appdata\local\temp\tmpe042zxlo.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:2152
  • C:\Windows\tnnftskbrmiixqejuzx.exe
    tnnftskbrmiixqejuzx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5712
  • C:\Windows\zrpfroethausfwilu.exe
    zrpfroethausfwilu.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3552
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\zrpfroethausfwilu.exe*."
      2⤵
      • Executes dropped EXE
      PID:5928
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:4400
  • C:\Windows\ibarectjysnmasfjtx.exe
    ibarectjysnmasfjtx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1292
  • C:\Users\Admin\AppData\Local\Temp\ibarectjysnmasfjtx.exe
    C:\Users\Admin\AppData\Local\Temp\ibarectjysnmasfjtx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1568
  • C:\Users\Admin\AppData\Local\Temp\vrtndeyrjgegxsipcjjfh.exe
    C:\Users\Admin\AppData\Local\Temp\vrtndeyrjgegxsipcjjfh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3080
  • C:\Windows\tnnftskbrmiixqejuzx.exe
    tnnftskbrmiixqejuzx.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4544
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\tnnftskbrmiixqejuzx.exe*."
      2⤵
      • Executes dropped EXE
      PID:5968
  • C:\Windows\vrtndeyrjgegxsipcjjfh.exe
    vrtndeyrjgegxsipcjjfh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3556
  • C:\Windows\sjgvgcrfskdamcnp.exe
    sjgvgcrfskdamcnp.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4172
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\sjgvgcrfskdamcnp.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:1816
  • C:\Users\Admin\AppData\Local\Temp\tnnftskbrmiixqejuzx.exe
    C:\Users\Admin\AppData\Local\Temp\tnnftskbrmiixqejuzx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5276
  • C:\Windows\vrtndeyrjgegxsipcjjfh.exe
    vrtndeyrjgegxsipcjjfh.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:616
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\vrtndeyrjgegxsipcjjfh.exe*."
      2⤵
      • Executes dropped EXE
      PID:3624
  • C:\Users\Admin\AppData\Local\Temp\gbcvkkdvmifgwqflxdcx.exe
    C:\Users\Admin\AppData\Local\Temp\gbcvkkdvmifgwqflxdcx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3256
  • C:\Windows\sjgvgcrfskdamcnp.exe
    sjgvgcrfskdamcnp.exe
    1⤵
    • Executes dropped EXE
    PID:2424
  • C:\Users\Admin\AppData\Local\Temp\zrpfroethausfwilu.exe
    C:\Users\Admin\AppData\Local\Temp\zrpfroethausfwilu.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:940
  • C:\Windows\ibarectjysnmasfjtx.exe
    ibarectjysnmasfjtx.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4992
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\ibarectjysnmasfjtx.exe*."
      2⤵
      • Executes dropped EXE
      PID:5356
  • C:\Windows\zrpfroethausfwilu.exe
    zrpfroethausfwilu.exe
    1⤵
    • Executes dropped EXE
    PID:5212
  • C:\Windows\gbcvkkdvmifgwqflxdcx.exe
    gbcvkkdvmifgwqflxdcx.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:592
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\gbcvkkdvmifgwqflxdcx.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:5436
  • C:\Windows\gbcvkkdvmifgwqflxdcx.exe
    gbcvkkdvmifgwqflxdcx.exe
    1⤵
    • Executes dropped EXE
    PID:4360
  • C:\Users\Admin\AppData\Local\Temp\sjgvgcrfskdamcnp.exe
    C:\Users\Admin\AppData\Local\Temp\sjgvgcrfskdamcnp.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4412

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

        admnksttswbkikhvpdknwxuc.dcg
        • Path C:\Program Files (x86)\admnksttswbkikhvpdknwxuc.dcg
        • Size 280B
        • SHA256 07adf0bc9a2aa9258ca87037ab8a5cf0a1fc93305175cc9dce35e9c780ad0013
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        admnksttswbkikhvpdknwxuc.dcg
        • Path C:\Program Files (x86)\admnksttswbkikhvpdknwxuc.dcg
        • Size 280B
        • SHA256 72732a81013d8ee78f805d53c8e2114a0067bdeb1ab08e8a5bc450442727e5b2
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        admnksttswbkikhvpdknwxuc.dcg
        • Path C:\Program Files (x86)\admnksttswbkikhvpdknwxuc.dcg
        • Size 280B
        • SHA256 f6ea322d107c8c560fd704f800366ae22b1bd0d33e38b15d4765aced1de19226
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        gnafgs.exe
        • Path C:\Users\Admin\AppData\Local\Temp\gnafgs.exe
        • Size 728KB
        • SHA256 04f4043cb40cee0035a2e2160330f134f445433595ca3a63275f419cc71117cd
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        umtekhkhewd.exe
        • Path C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
        • Size 320KB
        • SHA256 c9d593caba5baa6716e583255b247b6242814a3306faf3e273faef7d664ffb7e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        admnksttswbkikhvpdknwxuc.dcg
        • Path C:\Users\Admin\AppData\Local\admnksttswbkikhvpdknwxuc.dcg
        • Size 280B
        • SHA256 7084048429a24c6eddd42fe1d710c61e5734730640b5f25fd688b9c36035a960
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        admnksttswbkikhvpdknwxuc.dcg
        • Path C:\Users\Admin\AppData\Local\admnksttswbkikhvpdknwxuc.dcg
        • Size 280B
        • SHA256 10b74dfa121225bf94021e17bc7ec597fe1a5eefba389d1ed87b3c705a2ce08a
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        jxrdleqblaqktgonsrjxrdleqblaqktgons.jxr
        • Path C:\Users\Admin\AppData\Local\jxrdleqblaqktgonsrjxrdleqblaqktgons.jxr
        • Size 4KB
        • SHA256 fb656490c3508411600bcae114defc01dd78ef87dc374ef95709b2a85e7f2e05
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ibarectjysnmasfjtx.exe
        • Path C:\Windows\SysWOW64\ibarectjysnmasfjtx.exe
        • Size 564KB
        • SHA256 d32d585693fabb35cdd7019a2b0e749715e4f5e23cf87d5ee3bf099aa36dfb7d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download