1944853bb21c0d2846dc3587b07ed1eb0844663b68832f7801fc153d1f03b0e6

Analysis

max time kernel
5s
max time network
69s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
19/08/2026, 12:19

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Reason

Machine shutdown

General

Target
Virus.exe
Size 3.2MB
Sample260819-phb66stenc
SHA256 1944853bb21c0d2846dc3587b07ed1eb0844663b68832f7801fc153d1f03b0e6
MD5 f455493a68bb63c05b61b34ad119e2ba
SHA1 d5192754aaab0113192d7d3d8aa7afb561a12b78
SHA512 c32c52e97aaef254d84b2ad0521c83fbe973c1ed3b38e6dc3f25a28de88405a2b954eeba609086fe797e2ebd90110d7e8445fca0feaaaf6e8856417af6c1e9f7
SSDEEP 49152:8v7JTHkNRg6thCr/2yU1dLU1o+NWT7uDU2AM9Fw7MbcJv4NoQ45XEWkrwRd66bKr:
TLSH
T178F5E52229EF509DB3A39AAC5FC8F8BF9959F673160E30F620711B46C722D818D52375
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

bootkit discovery execution persistence privilege_escalation

Malware Config

Signatures

Event Triggered Execution: Component Object Model Hijacking 1 TTPs
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
persistence privilege_escalation

Component Object Model Hijacking
T1546.015

Executes dropped EXE 1 IoCs

pid	Process
4900	nasm.exe

Modifies system executable filetype association 2 TTPs 16 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\print\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shellex\ContextMenuHandlers\Compatibility	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shellex\ContextMenuHandlers	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\DefaultIcon	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\edit	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\runas	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\runasuser	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shellex\DropHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shellex\{8895b1c6-b41f-4c1c-a562-0d564250836f}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\print	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\runas\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\runasuser\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\edit\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open	reg.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	Virus.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 1 IoCs

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

execution

Windows Command Shell

T1059.003

pid	Process
3700	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nasm.exe

Modifies registry class 64 IoCs

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.psd\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.xltx\ShellEx	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\AllProtocols\shell\openas	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLRMetaData.CorMetaDataDispenserRuntime	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.dsp	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.ini	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.library-ms\ShellNew\Config	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.wmv\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.xltx\ShellEx\{8895b1c6-b41f-4c1c-a562-0d564250836f}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Adobe.Reader.HTMLPreview.1\CurVer	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CABFolder\CLSID	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CABFolder\Shell	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.flac\OpenWithProgIds	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.mlc	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.msrcincident	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Applications\MSInfo32.exe	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{00000560-0000-0010-8000-00AA006D2EA4}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.bzip2	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.perfmoncfg	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.rul	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.sc2	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{F2383816-917A-46CC-AD2A-5013BED3800F}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\ArchiveFolder\ShellEx	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{00020906-0000-0000-C000-000000000046}\ProgID	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.3gpp\OpenWithProgIds	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.msu	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.nrw\ShellEx\{e357fccd-a995-4576-b01f-234630154e96}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.ppthtml	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-552508041-2681165170-3229858294-1000_Classes\7-Zip.bz2\shell	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\AppX2b728y1f1nn5hvq8ww8qk030g07r87t9\Shell\open\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.URL\ShellEx\{000214EE-0000-0000-C000-000000000046}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\*\OpenWithList\notepad.exe	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.sit	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.xlk	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\AllFilesystemObjects\shellex\ContextMenuHandlers\SendTo	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CID.Local\a0089053-2f06-437c-8465-7ad195f1d078\Clsid	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{00020821-0000-0000-C000-000000000046}\ProgID	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{000209F5-0000-0000-C000-000000000046}\InprocServer32\15.0.0.0	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\removeproperties	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.ADT	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.wax\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\AcroExch.Document.DC\shell\Open	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\AppXb2m1ge7jcjp5f6g67dvz4x2sd3wwm24r\DefaultIcon	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.jpeg\OpenWithProgids	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.latex\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.tbz2\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.wav\OpenWithProgIds	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\acrobat2018\shell\open\ddeexec\application	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\AppUserModelId\Windows.SystemToast.WindowsStudio	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\AppX8mn6f6acw2d3hves535dpq0zqnxqkec7	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\AppXak1hygz1tpjjnxhr1pwtcgnkpr24r5e7\DefaultIcon	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.mkv	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.rw2\ShellEx	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.uvu\ShellEx\{BB2E617C-0920-11D1-9A0B-00C04FC2D6C1}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.vob	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Applications\WINWORD.EXE\shell\edit	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.dct	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.nef\ShellEx	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.pot\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.ppkg\OpenWithProgids	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.vcs\OpenWithProgIDs	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.xlsb\ShellEx	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.xlxml	reg.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: 33	2112	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2112	AUDIODG.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 3700	2988	Virus.exe	90
PID 2988 wrote to memory of 4900	2988	Virus.exe	92
PID 3700 wrote to memory of 3476	3700	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\Virus.exe
"C:\Users\Admin\AppData\Local\Temp\Virus.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /k reg delete HKCR /f
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:3700
- - C:\Windows\system32\reg.exe
    reg delete HKCR /f
    3⤵
    - Modifies system executable filetype association
    - Modifies registry class
    PID:3476
- C:\Users\Admin\AppData\Local\Temp\nasm.exe
  "nasm.exe" -f bin mbr_temp.asm -o mbr_temp.bin
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4900

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x000000000000049C 0x0000000000000494
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2112

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Component Object Model Hijacking

T1546.015

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Component Object Model Hijacking

T1546.015

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

mbr_temp.asm

Path C:\Users\Admin\AppData\Local\Temp\mbr_temp.asm
Size 677B
SHA256 92596be02c4f1d84bff6703e0e345067169f0fe380c3a6c560dd2d6fcf0fbe90
MD5 bc844528c5efbbad1eb02fffe874e4b9
SHA1 96dc00cb8e11074bc0dae162520f32432ddfe96c
SHA512 05eb1e9c4adc7b8c2ce44253b55c49a427d176f5cb7dfc58d9781a1432f3e74d07f2dd54bec664f328af71f7e7bb4278a7ed970de5fc62672f3545a29fa5dbc4
TLSH
T1D401F49908854AD947FF9588EAC13E0BD2CD821F818E6825B75C0F379FB26B035645EC
MD5 SHA1 SHA512 TLSH

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mbr_temp.bin

Path C:\Users\Admin\AppData\Local\Temp\mbr_temp.bin
Size 512B
SHA256 9cbe116957d0e42602394bcf435c6cd01bdc22c1ba74760b028d9e80ede08c8d
MD5 d4537307dc2f498a6b55be39abc4b31c
SHA1 a15056d8a32a81d254efffc6abe9947dc86ded84
SHA512 5a03505813a7b3da715a10cb142888ab07aeb748ad388a611307f82e641344f191d4b31131dd476541de275fd8d9d973f03f530f60c853009aae051c8220004c
TLSH
T190F012136941DDBDC46B0070E931805934E454346AD181CE4182AB0986A5569FF804C4
MD5 SHA1 SHA512 TLSH

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nasm.exe

Path C:\Users\Admin\AppData\Local\Temp\nasm.exe
Size 1.2MB
SHA256 a4735165141570d966b577d594c0541c29baed4978078c1c7237b855f8592a87
MD5 2f17bab79b9e5caa79c4f493a18fb06c
SHA1 f3eb8a09529b82fc08e919517e098644ddc01004
SHA512 37c62999e11f3a44c02bad2ad9941213c0264312f228de32466818ec84d745312f941f4adf6e4bf3f49d5d91e8df56dbf39b7966ed8d4b214b484c93635ca154
SSDEEP 24576:2zYx3PgYWwocek/r2+AAYNh3tBULAkS7Le:2koA/qhlL3rmzS7
TLSH
T1A4459422A687D9A3C40E1270DDC7D32977B2E0F46B368B87BA4C97AF7D213A11CC5546
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2988-16-0x00007FFEF6A00000-0x00007FFEF73A4000-memory.dmp

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memory/2988-23-0x00007FFEF6A00000-0x00007FFEF73A4000-memory.dmp

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memory/2988-5-0x00007FFEF6A00000-0x00007FFEF73A4000-memory.dmp

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memory/2988-9-0x00007FFEF6A00000-0x00007FFEF73A4000-memory.dmp

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memory/2988-10-0x00007FFEF6A00000-0x00007FFEF73A4000-memory.dmp

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memory/2988-11-0x00007FFEF6A00000-0x00007FFEF73A4000-memory.dmp

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memory/2988-12-0x00007FFEF6A00000-0x00007FFEF73A4000-memory.dmp

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memory/2988-0-0x00007FFEF6B8F000-0x00007FFEF6B90000-memory.dmp

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memory/2988-17-0x00007FFEF6A00000-0x00007FFEF73A4000-memory.dmp

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memory/2988-4-0x00007FFEF6A00000-0x00007FFEF73A4000-memory.dmp

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memory/2988-3-0x00007FFEF6A00000-0x00007FFEF73A4000-memory.dmp

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memory/2988-2-0x00007FFEF6A00000-0x00007FFEF73A4000-memory.dmp

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memory/2988-33-0x00007FFEF6A00000-0x00007FFEF73A4000-memory.dmp

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memory/2988-1-0x0000000000840000-0x0000000000B82000-memory.dmp

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memory/2988-31-0x00007FFEF6A00000-0x00007FFEF73A4000-memory.dmp

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memory/2988-32-0x00007FFEF6A00000-0x00007FFEF73A4000-memory.dmp

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memory/4900-29-0x0000000000400000-0x0000000000539000-memory.dmp

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Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads