Overview

overview

10

Static

static

3

tmpo80oyxoc.exe

windows10-ltsc_2021-x64

10

tmpo80oyxoc.exe

windows10-2004-x64

10

tmpo80oyxoc.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, 03:07

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General

  • Target
    tmpo80oyxoc.exe
  • Size 1016KB
  • Sample260602-dml2dscv6w
  • SHA256 ce6e2442a6630c9c444747dd6058c868588824a77eaae1342b208fc1dd60fa86
  • 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 34 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 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\tmpo80oyxoc.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpo80oyxoc.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1064
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\users\admin\appdata\local\temp\tmpo80oyxoc.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:1084
      • C:\Users\Admin\AppData\Local\Temp\hovyns.exe
        "C:\Users\Admin\AppData\Local\Temp\hovyns.exe" "-C:\Users\Admin\AppData\Local\Temp\tkboncriridamcnp.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:3004
      • C:\Users\Admin\AppData\Local\Temp\hovyns.exe
        "C:\Users\Admin\AppData\Local\Temp\hovyns.exe" "-C:\Users\Admin\AppData\Local\Temp\tkboncriridamcnp.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:2376
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\users\admin\appdata\local\temp\tmpo80oyxoc.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:3680
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:1116
  • C:\Windows\tkboncriridamcnp.exe
    tkboncriridamcnp.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3544
  • C:\Windows\tkboncriridamcnp.exe
    tkboncriridamcnp.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2452
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\tkboncriridamcnp.exe*."
      2⤵
      • Executes dropped EXE
      PID:2140
  • C:\Users\Admin\AppData\Local\Temp\wsogkeyuieegxsipcjkgc.exe
    C:\Users\Admin\AppData\Local\Temp\wsogkeyuieegxsipcjkgc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5704
  • C:\Windows\uoiyaskeqkiixqejuzy.exe
    uoiyaskeqkiixqejuzy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3396
  • C:\Windows\wsogkeyuieegxsipcjkgc.exe
    wsogkeyuieegxsipcjkgc.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1136
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\wsogkeyuieegxsipcjkgc.exe*."
      2⤵
      • Executes dropped EXE
      PID:3436
  • C:\Windows\hcxorkdylgfgwqflxddy.exe
    hcxorkdylgfgwqflxddy.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2600
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\hcxorkdylgfgwqflxddy.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:4976
  • C:\Windows\askyyoewgyusfwilu.exe
    askyyoewgyusfwilu.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5244
  • C:\Windows\jcvklctmxqnmasfjtx.exe
    jcvklctmxqnmasfjtx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2624
  • C:\Windows\uoiyaskeqkiixqejuzy.exe
    uoiyaskeqkiixqejuzy.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5152
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\uoiyaskeqkiixqejuzy.exe*."
      2⤵
      • Executes dropped EXE
      PID:5404
  • C:\Users\Admin\AppData\Local\Temp\uoiyaskeqkiixqejuzy.exe
    C:\Users\Admin\AppData\Local\Temp\uoiyaskeqkiixqejuzy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:792
  • C:\Users\Admin\AppData\Local\Temp\askyyoewgyusfwilu.exe
    C:\Users\Admin\AppData\Local\Temp\askyyoewgyusfwilu.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1860
  • C:\Users\Admin\AppData\Local\Temp\tkboncriridamcnp.exe
    C:\Users\Admin\AppData\Local\Temp\tkboncriridamcnp.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1192
  • C:\Users\Admin\AppData\Local\Temp\hcxorkdylgfgwqflxddy.exe
    C:\Users\Admin\AppData\Local\Temp\hcxorkdylgfgwqflxddy.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5232
  • C:\Windows\hcxorkdylgfgwqflxddy.exe
    hcxorkdylgfgwqflxddy.exe
    1⤵
    • Executes dropped EXE
    PID:1056
  • C:\Windows\jcvklctmxqnmasfjtx.exe
    jcvklctmxqnmasfjtx.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5664
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\jcvklctmxqnmasfjtx.exe*."
      2⤵
      • Executes dropped EXE
      PID:5572
  • C:\Windows\wsogkeyuieegxsipcjkgc.exe
    wsogkeyuieegxsipcjkgc.exe
    1⤵
    • Executes dropped EXE
    PID:2596
  • C:\Windows\askyyoewgyusfwilu.exe
    askyyoewgyusfwilu.exe .
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4920
    • C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
      "C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe" "c:\windows\askyyoewgyusfwilu.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:2744
  • C:\Users\Admin\AppData\Local\Temp\jcvklctmxqnmasfjtx.exe
    C:\Users\Admin\AppData\Local\Temp\jcvklctmxqnmasfjtx.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3544

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

        gkooaceieiqazcapkzimqqceg.gks
        • Path C:\Program Files (x86)\gkooaceieiqazcapkzimqqceg.gks
        • Size 280B
        • SHA256 83c1e65341e4306a4e0c83ff11df94be6a675ec95da55e242f79d8a7bec732c5
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        gkooaceieiqazcapkzimqqceg.gks
        • Path C:\Program Files (x86)\gkooaceieiqazcapkzimqqceg.gks
        • Size 280B
        • SHA256 996a81e0ce2e61c5a0ec01ada8dc357ec0a5e3c2d6523e73f4c73e9f93a29268
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        gkooaceieiqazcapkzimqqceg.gks
        • Path C:\Program Files (x86)\gkooaceieiqazcapkzimqqceg.gks
        • Size 280B
        • SHA256 d14d14a5bcff010da8c5418244c4eaeeb6c5b318ae88c240d152aca9e5c41ae1
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        hovyns.exe
        • Path C:\Users\Admin\AppData\Local\Temp\hovyns.exe
        • Size 716KB
        • SHA256 a04c48b3b36e32a372e99822e89cdd506cf8f7d29accf3af6ed587f26ac38c2e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        umtekhkhewd.exe
        • Path C:\Users\Admin\AppData\Local\Temp\umtekhkhewd.exe
        • Size 320KB
        • SHA256 5b54d5e727cf0c7179519224448848e67463cf81fbe71142e3a74234a18f508d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        gkooaceieiqazcapkzimqqceg.gks
        • Path C:\Users\Admin\AppData\Local\gkooaceieiqazcapkzimqqceg.gks
        • Size 280B
        • SHA256 f3a5021166fc79423cb90d49305a268062d680691f42668364e5fbe4df589775
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        lapaxkxmtibwguddjjdshspcpelatoymvvbb.kzk
        • Path C:\Users\Admin\AppData\Local\lapaxkxmtibwguddjjdshspcpelatoymvvbb.kzk
        • Size 4KB
        • SHA256 fe273cb065a727dd7834c0bf7891632a98466164f1fa19af9d536a26571cf5db
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        jcvklctmxqnmasfjtx.exe
        • Path C:\Windows\SysWOW64\jcvklctmxqnmasfjtx.exe
        • Size 1016KB
        • SHA256 ce6e2442a6630c9c444747dd6058c868588824a77eaae1342b208fc1dd60fa86
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download