Overview

overview

10

Static

static

10

03309c90e6...69.exe

windows10-2004-x64

10

03309c90e6...69.exe

windows11-ltsc_2024-x64

10

05072a7ec4...7f.exe

windows10-2004-x64

10

05072a7ec4...7f.exe

windows11-ltsc_2024-x64

10

07117c02a0...99.dll

windows10-2004-x64

3

07117c02a0...99.dll

windows11-ltsc_2024-x64

3

2624a0becf...b5.exe

windows10-2004-x64

10

2624a0becf...b5.exe

windows11-ltsc_2024-x64

10

2756b78e9d...21.exe

windows10-2004-x64

10

2756b78e9d...21.exe

windows11-ltsc_2024-x64

10

2790fbc25d...cb.exe

windows10-2004-x64

1

2790fbc25d...cb.exe

windows11-ltsc_2024-x64

1

3107e64c2b...d8.exe

windows10-2004-x64

10

3107e64c2b...d8.exe

windows11-ltsc_2024-x64

10

3123adc3a2...0a.exe

windows10-2004-x64

10

3123adc3a2...0a.exe

windows11-ltsc_2024-x64

1

3424a8c9c9...0e.exe

windows10-2004-x64

10

3424a8c9c9...0e.exe

windows11-ltsc_2024-x64

10

Antivirus_...f2.dll

windows10-2004-x64

10

Antivirus_...f2.dll

windows11-ltsc_2024-x64

10

4481b936a2...c4.exe

windows10-2004-x64

10

4481b936a2...c4.exe

windows11-ltsc_2024-x64

10

5165cd6115...bc.exe

windows10-2004-x64

10

5165cd6115...bc.exe

windows11-ltsc_2024-x64

10

5211ad8427...aa.dll

windows10-2004-x64

10

5211ad8427...aa.dll

windows11-ltsc_2024-x64

10

5221cbfcd9...97.exe

windows10-2004-x64

10

5221cbfcd9...97.exe

windows11-ltsc_2024-x64

7

5339c1fc00...e2.exe

windows10-2004-x64

10

5339c1fc00...e2.exe

windows11-ltsc_2024-x64

1

5458f18e36...fc.exe

windows10-2004-x64

10

5458f18e36...fc.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    69s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    11/10/2026, 17:32

Sharing

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General

  • Target
    4481b936a2246a640be36f9a37a15b4f89b3493f705c7fdb8af7df5445e8bcc4.exe
  • Size 5.4MB
  • Sample261011-v4fdlsbv7x
  • SHA256 4481b936a2246a640be36f9a37a15b4f89b3493f705c7fdb8af7df5445e8bcc4
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoveryexecutionnominatuscryptopersistenceprivilege_escalationransomwarespywarestealer

Malware Config

Signatures

  • Family: NominatusCrypto,NominatusStorm

    NominatusCrypto aka NominatusStorm is a ransomware written in C#.

    ransomwarenominatuscrypto
  • Detects NominatusCrypto C# variant 1 IoCs
  • Detects NominatusCrypto DOS executable variant 2 IoCs
  • Creates a file in the Startup directory 1 TTPs 2 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    persistenceprivilege_escalation
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Drops autorun.inf file 1 TTPs 3 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Executes a command shell one-liner 1 TTPs 4 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4481b936a2246a640be36f9a37a15b4f89b3493f705c7fdb8af7df5445e8bcc4.exe
    "C:\Users\Admin\AppData\Local\Temp\4481b936a2246a640be36f9a37a15b4f89b3493f705c7fdb8af7df5445e8bcc4.exe"
    1⤵
    • Creates a file in the Startup directory
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1260
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet && wmic shadowcopy delete
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:6056
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^[autorun^] >autorun.inf
      2⤵
      • Drops autorun.inf file
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:2964
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^open^=KasperskyScan^.exe >>autorun.inf
      2⤵
      • Drops autorun.inf file
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:5464
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^execute=^KasperskyScan^.exe >>autorun.inf
      2⤵
      • Drops autorun.inf file
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:3000

Network

        MITRE ATT&CK Enterprise v16

        Reconnaissance

        Resource Development

        Initial Access

        Replication Through Removable Media

        1
        T1091

        Execution

        Command and Scripting Interpreter

        1
        T1059

        Windows Command Shell

        1
        T1059.003

        Persistence

        Boot or Logon Autostart Execution

        1
        T1547

        Registry Run Keys / Startup Folder

        1
        T1547.001

        Privilege Escalation

        Boot or Logon Autostart Execution

        1
        T1547

        Registry Run Keys / Startup Folder

        1
        T1547.001

        Defense Evasion

        Credential Access

        Credentials from Password Stores

        1
        T1555

        Credentials from Web Browsers

        1
        T1555.003

        Unsecured Credentials

        1
        T1552

        Credentials In Files

        1
        T1552.001

        Discovery

        System Information Discovery

        1
        T1082

        System Location Discovery

        1
        T1614

        System Language Discovery

        1
        T1614.001

        Lateral Movement

        Replication Through Removable Media

        1
        T1091

        Collection

        Data from Local System

        1
        T1005

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        VSTOInstaller.exe
        • Path C:\Program Files (x86)\Common Files\Microsoft Shared\VSTO\10.0\VSTOInstaller.exe
        • Size 5.4MB
        • SHA256 4481b936a2246a640be36f9a37a15b4f89b3493f705c7fdb8af7df5445e8bcc4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        autorun.inf
        • Path C:\Users\Admin\AppData\Local\Temp\autorun.inf
        • Size 37B
        • SHA256 747ea7ec54ee0bc9b637867de0c451df65c840f757988f5a3b6e3fe6c73ab1b6
        • MD5 SHA1 SHA512
        Submit Download

        autorun.inf
        • Path C:\Users\Admin\AppData\Local\Temp\autorun.inf
        • Size 65B
        • SHA256 3861acedffd29452d2fdb96728f7347652bde9353915d3873a7414843f49b8b1
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        memory/1260-0-0x0000000074962000-0x0000000074963000-memory.dmp
        Download

        memory/1260-1-0x0000000000BD0000-0x0000000000BD8000-memory.dmp
        Download

        memory/1260-2-0x0000000005E80000-0x000000000643A000-memory.dmp
        Download

        memory/1260-3-0x00000000057B0000-0x0000000005842000-memory.dmp
        Download

        memory/1260-4-0x0000000005730000-0x000000000573A000-memory.dmp
        Download

        memory/1260-5-0x0000000074950000-0x000000007510C000-memory.dmp
        Download

        memory/1260-1405-0x0000000074962000-0x0000000074963000-memory.dmp
        Download

        memory/1260-1624-0x0000000074950000-0x000000007510C000-memory.dmp
        Download