Overview

overview

10

Static

static

3

tmplc5ysqyh.exe

windows10-ltsc_2021-x64

10

tmplc5ysqyh.exe

windows10-2004-x64

10

tmplc5ysqyh.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    02/06/2026, 02:20

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    tmplc5ysqyh.exe
  • Size 532KB
  • Sample260602-csmpfabx3x
  • SHA256 4181ec24509fde4a5caf4365621fc8566782a855f1cb32a5a53f73875565b445
  • 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 37 IoCs
    persistence
  • Disables RegEdit via registry modification 6 IoCs
    defense_evasion
  • Checks computer location settings 2 TTPs 8 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 6 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 64 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 63 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\tmplc5ysqyh.exe
    "C:\Users\Admin\AppData\Local\Temp\tmplc5ysqyh.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2444
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\users\admin\appdata\local\temp\tmplc5ysqyh.exe*"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Checks computer location settings
      • 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:1348
      • C:\Users\Admin\AppData\Local\Temp\mrzgnm.exe
        "C:\Users\Admin\AppData\Local\Temp\mrzgnm.exe" "-c:\users\admin\appdata\local\temp\tmplc5ysqyh.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:3820
      • C:\Users\Admin\AppData\Local\Temp\mrzgnm.exe
        "C:\Users\Admin\AppData\Local\Temp\mrzgnm.exe" "-c:\users\admin\appdata\local\temp\tmplc5ysqyh.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:4104
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\users\admin\appdata\local\temp\tmplc5ysqyh.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:1664
  • C:\Windows\explorer.exe
    Explorer.exe
    1⤵
    • Modifies registry class
    PID:2472
  • C:\Windows\fvogyizxlvwnlfvsz.exe
    fvogyizxlvwnlfvsz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2440
  • C:\Windows\ofzslwoncnphgbsqyi.exe
    ofzslwoncnphgbsqyi.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2296
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\windows\ofzslwoncnphgbsqyi.exe*."
      2⤵
      • Executes dropped EXE
      PID:2936
  • C:\Windows\mfbwreyzqdhbczsscohd.exe
    mfbwreyzqdhbczsscohd.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2992
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\windows\mfbwreyzqdhbczsscohd.exe*."
      2⤵
      • Executes dropped EXE
      PID:2152
  • C:\Windows\ynfwnwmjwffvslaw.exe
    ynfwnwmjwffvslaw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2368
  • C:\Users\Admin\AppData\Local\Temp\fvogyizxlvwnlfvsz.exe
    C:\Users\Admin\AppData\Local\Temp\fvogyizxlvwnlfvsz.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4416
  • C:\Windows\bvsokytvnbgbdbvwhuolh.exe
    bvsokytvnbgbdbvwhuolh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4012
  • C:\Windows\fvogyizxlvwnlfvsz.exe
    fvogyizxlvwnlfvsz.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4664
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\windows\fvogyizxlvwnlfvsz.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:4268
  • C:\Users\Admin\AppData\Local\Temp\bvsokytvnbgbdbvwhuolh.exe
    C:\Users\Admin\AppData\Local\Temp\bvsokytvnbgbdbvwhuolh.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2712
  • C:\Windows\mfbwreyzqdhbczsscohd.exe
    mfbwreyzqdhbczsscohd.exe
    1⤵
    • Executes dropped EXE
    PID:2492
  • C:\Users\Admin\AppData\Local\Temp\zrmgamffvhkddzrqzkc.exe
    C:\Users\Admin\AppData\Local\Temp\zrmgamffvhkddzrqzkc.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1064
  • C:\Windows\zrmgamffvhkddzrqzkc.exe
    zrmgamffvhkddzrqzkc.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5076
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\windows\zrmgamffvhkddzrqzkc.exe*."
      2⤵
      • Executes dropped EXE
      PID:4660
  • C:\Windows\ofzslwoncnphgbsqyi.exe
    ofzslwoncnphgbsqyi.exe
    1⤵
    • Executes dropped EXE
    PID:4136
  • C:\Windows\bvsokytvnbgbdbvwhuolh.exe
    bvsokytvnbgbdbvwhuolh.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4480
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\windows\bvsokytvnbgbdbvwhuolh.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:3448
  • C:\Users\Admin\AppData\Local\Temp\ofzslwoncnphgbsqyi.exe
    C:\Users\Admin\AppData\Local\Temp\ofzslwoncnphgbsqyi.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4328
  • C:\Users\Admin\AppData\Local\Temp\ynfwnwmjwffvslaw.exe
    C:\Users\Admin\AppData\Local\Temp\ynfwnwmjwffvslaw.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4840
  • C:\Users\Admin\AppData\Local\Temp\mfbwreyzqdhbczsscohd.exe
    C:\Users\Admin\AppData\Local\Temp\mfbwreyzqdhbczsscohd.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5012
  • C:\Windows\ynfwnwmjwffvslaw.exe
    ynfwnwmjwffvslaw.exe .
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1576
    • C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
      "C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe" "c:\windows\ynfwnwmjwffvslaw.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:4840
  • C:\Windows\zrmgamffvhkddzrqzkc.exe
    zrmgamffvhkddzrqzkc.exe
    1⤵
    • Executes dropped EXE
    PID:1336

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

        Query Registry

        1
        T1012

        System Information Discovery

        3
        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

        lnswawzjjfsvflnwpkmrvzvyi.eru
        • Path C:\Program Files (x86)\lnswawzjjfsvflnwpkmrvzvyi.eru
        • Size 120B
        • SHA256 658b43105c65aee42f2d3104db898403cb1e31b75fde6a9f8d7982cb5891086a
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        lnswawzjjfsvflnwpkmrvzvyi.eru
        • Path C:\Program Files (x86)\lnswawzjjfsvflnwpkmrvzvyi.eru
        • Size 120B
        • SHA256 0da3e5188484fc0ab6ffea8e30f08e8fb2012390d60da42ffb545f0eec76d5ab
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        lnswawzjjfsvflnwpkmrvzvyi.eru
        • Path C:\Program Files (x86)\lnswawzjjfsvflnwpkmrvzvyi.eru
        • Size 120B
        • SHA256 106cd88a9839ea0718f8d547ca64210fd3a41a1dcb2efb10e12b54def8771de5
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        lnswawzjjfsvflnwpkmrvzvyi.eru
        • Path C:\Program Files (x86)\lnswawzjjfsvflnwpkmrvzvyi.eru
        • Size 120B
        • SHA256 369698714988e97ffe869fd991ca2e55c90368e4c6a2456c5b70e29ceb28bd0a
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        lnswawzjjfsvflnwpkmrvzvyi.eru
        • Path C:\Program Files (x86)\lnswawzjjfsvflnwpkmrvzvyi.eru
        • Size 120B
        • SHA256 e251058271d2622207fdc40bd3a888cf0405433f3e6f1b8ae1ef7db1a938bc77
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        lnswawzjjfsvflnwpkmrvzvyi.eru
        • Path C:\Program Files (x86)\lnswawzjjfsvflnwpkmrvzvyi.eru
        • Size 120B
        • SHA256 f8505849d92f4e0b60f66fa731f616bdbb4ad681cbbac52b120fea9d2dcd78b3
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        lnswawzjjfsvflnwpkmrvzvyi.eru
        • Path C:\Program Files (x86)\lnswawzjjfsvflnwpkmrvzvyi.eru
        • Size 120B
        • SHA256 a33d605acde793dccdd279e7a52866a4488b042da2d36dfbccf9f2f77364f2df
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        mhskyizawrc.exe
        • Path C:\Users\Admin\AppData\Local\Temp\mhskyizawrc.exe
        • Size 308KB
        • SHA256 6fff20aabe8265b6e811c9dbcb987f9c15cf07d1d8b80ced7b287d96900f5c62
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        mrzgnm.exe
        • Path C:\Users\Admin\AppData\Local\Temp\mrzgnm.exe
        • Size 680KB
        • SHA256 f59cc9ecfade6e08e688ccd129c93ddd326b55a424cbdd1c66f34e4512dd4d9c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        lnswawzjjfsvflnwpkmrvzvyi.eru
        • Path C:\Users\Admin\AppData\Local\lnswawzjjfsvflnwpkmrvzvyi.eru
        • Size 120B
        • SHA256 d3140eba831b59d835a5eacd8f9debfe9fecd05eb1c320407d696229268f8dc4
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        qdtixesnyfdrmdqkouhxmbiwrcjhvqhuosyl.qfm
        • Path C:\Users\Admin\AppData\Local\qdtixesnyfdrmdqkouhxmbiwrcjhvqhuosyl.qfm
        • Size 3KB
        • SHA256 681a80000d13d186aa5ebc7fb08e3f085bcf2176b98fe8315de3d90a0c24c495
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        ofzslwoncnphgbsqyi.exe
        • Path C:\Windows\SysWOW64\ofzslwoncnphgbsqyi.exe
        • Size 532KB
        • SHA256 4181ec24509fde4a5caf4365621fc8566782a855f1cb32a5a53f73875565b445
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download