Overview

overview

10

Static

static

3

tmp940scsql.exe

windows10-ltsc_2021-x64

10

tmp940scsql.exe

windows10-2004-x64

10

tmp940scsql.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, 02:44

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    tmp940scsql.exe
  • Size 472KB
  • Sample260602-c77cdsb19y
  • SHA256 b40dc1aef0491e5e5336209929cd6c56f2466da2e9677d349aec272af4a2b731
  • 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 7 IoCs
    persistence
  • UAC bypass 3 TTPs 16 IoCs
    defense_evasiontrojan
  • Adds policy Run key to start application 2 TTPs 39 IoCs
    persistence
  • Disables RegEdit via registry modification 10 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 14 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 53 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 53 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 44 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp940scsql.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp940scsql.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5340
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\users\admin\appdata\local\temp\tmp940scsql.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:4484
      • C:\Users\Admin\AppData\Local\Temp\howbmq.exe
        "C:\Users\Admin\AppData\Local\Temp\howbmq.exe" "-c:\users\admin\appdata\local\temp\tmp940scsql.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:2028
      • C:\Users\Admin\AppData\Local\Temp\howbmq.exe
        "C:\Users\Admin\AppData\Local\Temp\howbmq.exe" "-c:\users\admin\appdata\local\temp\tmp940scsql.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:5560
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\users\admin\appdata\local\temp\tmp940scsql.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:5508
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:4424
  • C:\Windows\wspjjcrrneatwofbqlkgd.exe
    wspjjcrrneatwofbqlkgd.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4736
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\windows\wspjjcrrneatwofbqlkgd.exe*."
      2⤵
      • Executes dropped EXE
      PID:2516
  • C:\Windows\wspjjcrrneatwofbqlkgd.exe
    wspjjcrrneatwofbqlkgd.exe
    1⤵
    • Executes dropped EXE
    PID:5240
  • C:\Windows\uojbzqdbvkevwmbviby.exe
    uojbzqdbvkevwmbviby.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3304
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\windows\uojbzqdbvkevwmbviby.exe*."
      2⤵
      • Executes dropped EXE
      PID:4604
  • C:\Windows\tkcrmakfwiznlykb.exe
    tkcrmakfwiznlykb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1196
  • C:\Users\Admin\AppData\Local\Temp\jcwnkamjcqjzzocvhz.exe
    C:\Users\Admin\AppData\Local\Temp\jcwnkamjcqjzzocvhz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1428
  • C:\Users\Admin\AppData\Local\Temp\tkcrmakfwiznlykb.exe
    C:\Users\Admin\AppData\Local\Temp\tkcrmakfwiznlykb.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4700
  • C:\Windows\jcwnkamjcqjzzocvhz.exe
    jcwnkamjcqjzzocvhz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5744
  • C:\Windows\aslbxmxtlyqfesfxi.exe
    aslbxmxtlyqfesfxi.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5104
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\windows\aslbxmxtlyqfesfxi.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:5172
  • C:\Windows\aslbxmxtlyqfesfxi.exe
    aslbxmxtlyqfesfxi.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3640
  • C:\Users\Admin\AppData\Local\Temp\uojbzqdbvkevwmbviby.exe
    C:\Users\Admin\AppData\Local\Temp\uojbzqdbvkevwmbviby.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2448
  • C:\Windows\hcyrqiwvqgbtvmcxlfdy.exe
    hcyrqiwvqgbtvmcxlfdy.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:6060
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\windows\hcyrqiwvqgbtvmcxlfdy.exe*."
      2⤵
      • Executes dropped EXE
      PID:5796
  • C:\Windows\uojbzqdbvkevwmbviby.exe
    uojbzqdbvkevwmbviby.exe
    1⤵
    • Executes dropped EXE
    PID:3432
  • C:\Users\Admin\AppData\Local\Temp\hcyrqiwvqgbtvmcxlfdy.exe
    C:\Users\Admin\AppData\Local\Temp\hcyrqiwvqgbtvmcxlfdy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5880
  • C:\Users\Admin\AppData\Local\Temp\wspjjcrrneatwofbqlkgd.exe
    C:\Users\Admin\AppData\Local\Temp\wspjjcrrneatwofbqlkgd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:6000
  • C:\Users\Admin\AppData\Local\Temp\aslbxmxtlyqfesfxi.exe
    C:\Users\Admin\AppData\Local\Temp\aslbxmxtlyqfesfxi.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:6096
  • C:\Windows\tkcrmakfwiznlykb.exe
    tkcrmakfwiznlykb.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1172
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\windows\tkcrmakfwiznlykb.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:2756
  • C:\Windows\hcyrqiwvqgbtvmcxlfdy.exe
    hcyrqiwvqgbtvmcxlfdy.exe
    1⤵
    • Executes dropped EXE
    PID:2668
  • C:\Windows\jcwnkamjcqjzzocvhz.exe
    jcwnkamjcqjzzocvhz.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:652
    • C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
      "C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe" "c:\windows\jcwnkamjcqjzzocvhz.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:560

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

        xyazecwbcyzxfcyzttxyaz.cwb
        • Path C:\Program Files (x86)\xyazecwbcyzxfcyzttxyaz.cwb
        • Size 272B
        • SHA256 1bbff52b2828c2ac4fdd0938d422e4f5a69d484bd9784eb2e2f8f3c38037df5d
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        xyazecwbcyzxfcyzttxyaz.cwb
        • Path C:\Program Files (x86)\xyazecwbcyzxfcyzttxyaz.cwb
        • Size 272B
        • SHA256 94fe4cd6d7788c8454f61dc989218cb236e55df2199f0983c2d1c9c823dbfbd5
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        xyazecwbcyzxfcyzttxyaz.cwb
        • Path C:\Program Files (x86)\xyazecwbcyzxfcyzttxyaz.cwb
        • Size 272B
        • SHA256 eeb79988a4698f06992bf9df69d163231a16316a0a469585fc5524b5ca267321
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        xyazecwbcyzxfcyzttxyaz.cwb
        • Path C:\Program Files (x86)\xyazecwbcyzxfcyzttxyaz.cwb
        • Size 272B
        • SHA256 ff746cf559d7363e3b0c86a42f7889d72dae815a3bcea3415299592fe0977d6c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        howbmq.exe
        • Path C:\Users\Admin\AppData\Local\Temp\howbmq.exe
        • Size 704KB
        • SHA256 8940bf90b1299c10cb1b7043d488e72a2b9053b2a34ba944bb87815b9c38f5e2
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        qzsahtyjajc.exe
        • Path C:\Users\Admin\AppData\Local\Temp\qzsahtyjajc.exe
        • Size 320KB
        • SHA256 0cc02d34d5fd4cf892fed282f98c1ad3e7dd6159a8877ae5c46d3f834ed36060
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        oanxnwbrdkwfygnzepeqdndmrhtamvowd.ufu
        • Path C:\Users\Admin\AppData\Local\oanxnwbrdkwfygnzepeqdndmrhtamvowd.ufu
        • Size 3KB
        • SHA256 4587aa7d57d6b6ba195c25400e2a81ae9da3ab747da243c072fa5624b7124676
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        xyazecwbcyzxfcyzttxyaz.cwb
        • Path C:\Users\Admin\AppData\Local\xyazecwbcyzxfcyzttxyaz.cwb
        • Size 272B
        • SHA256 61b185ffea8ad06f18acfcf47777182bb7489239d2cf2f5373d3db5b8d86eb45
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        jcwnkamjcqjzzocvhz.exe
        • Path C:\Windows\SysWOW64\jcwnkamjcqjzzocvhz.exe
        • Size 472KB
        • SHA256 b40dc1aef0491e5e5336209929cd6c56f2466da2e9677d349aec272af4a2b731
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download