Malware analysis Nerest.PC.exe Malicious activity | ANY.RUN

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File name:	Nerest.PC.exe
Full analysis:	https://app.any.run/tasks/cf4814b6-07f0-42d9-b869-01e4cee6f262
Verdict:	Malicious activity
Threats:	A loader is malicious software that infiltrates devices to deliver malicious payloads. This malware is capable of infecting victims’ computers, analyzing their system information, and installing other types of threats, such as trojans or stealers. Criminals usually deliver loaders through phishing emails and links by relying on social engineering to trick users into downloading and running their executables. Loaders employ advanced evasion and persistence tactics to avoid detection. Malware Trends Tracker >>>
Analysis date:	April 29, 2025, 08:55:37
OS:	Windows 10 Professional (build: 19044, 64 bit)
Tags:	winlocker loader upx delphi
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed, 3 sections
MD5:	9D3031DB970D3A71CC0B3B1B805A6505
SHA1:	455E9A12E22C2E0BE66F885C90AE461E36CC707E
SHA256:	C2A381E168715C2759D01697CDAE7F00A7FDE1EB0235026D916ACCE12BE0A20C
SSDEEP:	98304:jQkmJvhWsCkQVoG0m2p6sl1VZMzYgq7byqfYG71S6b6hus33vkzyJz9tLqG:yF83

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

Launch configuration

Task duration:: 60 seconds
Heavy Evasion option:: off
Network geolocation:: off
Additional time used:: none
MITM proxy:: off
Privacy:: Public submission
Fakenet option:: off
Route via Tor:: off
Autoconfirmation of UAC:: on
Network:: on

Software preset

Internet Explorer 11.3636.19041.0
Adobe Acrobat (64-bit) (23.001.20093)
Adobe Flash Player 32 NPAPI (32.0.0.465)
Adobe Flash Player 32 PPAPI (32.0.0.465)
CCleaner (6.20)
FileZilla 3.65.0 (3.65.0)
Google Chrome (122.0.6261.70)
Google Update Helper (1.3.36.51)
Java 8 Update 271 (64-bit) (8.0.2710.9)
Java Auto Updater (2.8.271.9)
Microsoft Edge (122.0.2365.59)
Microsoft Edge Update (1.3.185.17)
Microsoft Office Professional 2019 - de-de (16.0.16026.20146)
Microsoft Office Professional 2019 - en-us (16.0.16026.20146)
Microsoft Office Professional 2019 - es-es (16.0.16026.20146)
Microsoft Office Professional 2019 - it-it (16.0.16026.20146)
Microsoft Office Professional 2019 - ja-jp (16.0.16026.20146)
Microsoft Office Professional 2019 - ko-kr (16.0.16026.20146)
Microsoft Office Professional 2019 - pt-br (16.0.16026.20146)
Microsoft Office Professional 2019 - tr-tr (16.0.16026.20146)
Microsoft Office Professionnel 2019 - fr-fr (16.0.16026.20146)
Microsoft Office профессиональный 2019 - ru-ru (16.0.16026.20146)
Microsoft OneNote - en-us (16.0.16026.20146)
Microsoft Update Health Tools (3.74.0.0)
Microsoft Visual C++ 2013 Redistributable (x64) - 12.0.30501 (12.0.30501.0)
Microsoft Visual C++ 2013 x64 Additional Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2013 x64 Minimum Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2015-2022 Redistributable (x64) - 14.36.32532 (14.36.32532.0)
Microsoft Visual C++ 2015-2022 Redistributable (x86) - 14.36.32532 (14.36.32532.0)
Microsoft Visual C++ 2022 X64 Additional Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X64 Minimum Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X86 Additional Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X86 Minimum Runtime - 14.36.32532 (14.36.32532)
Mozilla Firefox (x64 en-US) (123.0)
Mozilla Maintenance Service (123.0)
Notepad++ (64-bit x64) (7.9.1)
Office 16 Click-to-Run Extensibility Component (16.0.15726.20202)
Office 16 Click-to-Run Licensing Component (16.0.16026.20146)
Office 16 Click-to-Run Localization Component (16.0.15726.20202)
Office 16 Click-to-Run Localization Component (16.0.15928.20198)
PowerShell 7-x64 (7.3.5.0)
Skype version 8.104 (8.104)
Update for Windows 10 for x64-based Systems (KB4023057) (2.59.0.0)
Update for Windows 10 for x64-based Systems (KB4023057) (2.63.0.0)
Update for Windows 10 for x64-based Systems (KB4480730) (2.55.0.0)
Update for Windows 10 for x64-based Systems (KB5001716) (8.93.0.0)
VLC media player (3.0.11)
WinRAR 5.91 (64-bit) (5.91.0)
Windows PC Health Check (3.6.2204.08001)

Hotfixes

Client LanguagePack Package
DotNetRollup
DotNetRollup 481
FodMetadata Package
Foundation Package
Hello Face Package
InternetExplorer Optional Package
KB5003791
KB5011048
KB5015684
KB5033052
LanguageFeatures Basic en us Package
LanguageFeatures Handwriting en us Package
LanguageFeatures OCR en us Package
LanguageFeatures Speech en us Package
LanguageFeatures TextToSpeech en us Package
MSPaint FoD Package
MediaPlayer Package
Microsoft OneCore ApplicationModel Sync Desktop FOD Package
Microsoft OneCore DirectX Database FOD Package
NetFx3 OnDemand Package
Notepad FoD Package
OpenSSH Client Package
PowerShell ISE FOD Package
Printing PMCPPC FoD Package
Printing WFS FoD Package
ProfessionalEdition
QuickAssist Package
RollupFix
ServicingStack
ServicingStack 3989
StepsRecorder Package
TabletPCMath Package
UserExperience Desktop Package
WordPad FoD Package

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MALICIOUS
- UAC/LUA settings modification
  - Nerest.PC.exe (PID: 7388)
- WINLOCKER mutex has been found
  - Nerest.PC.exe (PID: 7388)
- Changes the autorun value in the registry
  - Nerest.PC.exe (PID: 7388)
- Changes image file execution options
  - Nerest.PC.exe (PID: 7388)
- Disables the Run the Start menu
  - Nerest.PC.exe (PID: 7388)
- Disables the Shutdown in the Start menu
  - Nerest.PC.exe (PID: 7388)
- Disables the Find the Start menu
  - Nerest.PC.exe (PID: 7388)
- Disables the LogOff the Start menu
  - Nerest.PC.exe (PID: 7388)
- WINLOCKER has been detected (YARA)
  - Nerest.PC.exe (PID: 7388)
SUSPICIOUS
- Creates file in the systems drive root
  - Nerest.PC.exe (PID: 7388)
- Reads security settings of Internet Explorer
  - ShellExperienceHost.exe (PID: 7524)
- There is functionality for taking screenshot (YARA)
  - Nerest.PC.exe (PID: 7388)
INFO
- Checks supported languages
  - Nerest.PC.exe (PID: 7388)
  - ShellExperienceHost.exe (PID: 7524)
- Reads the computer name
  - Nerest.PC.exe (PID: 7388)
  - ShellExperienceHost.exe (PID: 7524)
- Create files in a temporary directory
  - Nerest.PC.exe (PID: 7388)
- UPX packer has been detected
  - Nerest.PC.exe (PID: 7388)
- Compiled with Borland Delphi (YARA)
  - Nerest.PC.exe (PID: 7388)

Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

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No Malware configuration.

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TRiD

.exe	\|	UPX compressed Win32 Executable (61.1)
.dll	\|	Win32 Dynamic Link Library (generic) (14.8)
.exe	\|	Win32 Executable (generic) (10.1)
.exe	\|	Win16/32 Executable Delphi generic (4.6)
.exe	\|	Generic Win/DOS Executable (4.5)

EXIF

EXE

MachineType:	Intel 386 or later, and compatibles
TimeStamp:	1992:06:19 22:22:17+00:00
ImageFileCharacteristics:	No relocs, Executable, No line numbers, No symbols, Bytes reversed lo, 32-bit, Bytes reversed hi
PEType:	PE32
LinkerVersion:	2.25
CodeSize:	1748992
InitializedDataSize:	36864
UninitializedDataSize:	1191936
EntryPoint:	0x2ce650
OSVersion:	4
ImageVersion:	-
SubsystemVersion:	4
Subsystem:	Windows GUI

No data.

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All screenshots are available in the full report

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Total processes

136

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

7300

"C:\Users\admin\AppData\Local\Temp\Nerest.PC.exe"

C:\Users\admin\AppData\Local\Temp\Nerest.PC.exe

—

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

3221226540

Modules

Images
c:\users\admin\appdata\local\temp\nerest.pc.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll

7388

"C:\Users\admin\AppData\Local\Temp\Nerest.PC.exe"

C:\Users\admin\AppData\Local\Temp\Nerest.PC.exe

explorer.exe

User:

admin

Integrity Level:

HIGH

Modules

Images
c:\users\admin\appdata\local\temp\nerest.pc.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\advapi32.dll

7524

"C:\WINDOWS\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca

C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe

—

svchost.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Windows Shell Experience Host

Exit code:

Version:

10.0.19041.3758 (WinBuild.160101.0800)

Modules

Images
c:\windows\systemapps\shellexperiencehost_cw5n1h2txyewy\shellexperiencehost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\oleaut32.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\wincorlib.dll

7604

C:\WINDOWS\system32\SppExtComObj.exe -Embedding

C:\Windows\System32\SppExtComObj.Exe

—

svchost.exe

User:

NETWORK SERVICE

Company:

Microsoft Corporation

Integrity Level:

SYSTEM

Description:

KMS Connection Broker

Version:

10.0.19041.3996 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\sppextcomobj.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\oleaut32.dll

7672

"C:\WINDOWS\System32\SLUI.exe" RuleId=3482d82e-ca2c-4e1f-8864-da0267b484b2;Action=AutoActivate;AppId=55c92734-d682-4d71-983e-d6ec3f16059f;SkuId=4de7cb65-cdf1-4de9-8ae8-e3cce27b9f2c;NotificationInterval=1440;Trigger=TimerEvent

C:\Windows\System32\slui.exe

SppExtComObj.Exe

User:

NETWORK SERVICE

Company:

Microsoft Corporation

Integrity Level:

SYSTEM

Description:

Windows Activation Client

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\slui.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\user32.dll

8040

"C:\WINDOWS\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca

C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe

—

svchost.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Search application

Exit code:

2147945463

Version:

10.0.19041.3996 (WinBuild.160101.0800)

Modules

Images
c:\windows\systemapps\microsoft.windows.search_cw5n1h2txyewy\searchapp.exe
c:\windows\system32\ntdll.dll

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Total events

954

Read events

926

Write events

Delete events

Modification events


(PID) Process:	(7388) Nerest.PC.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Windows\System
Operation:	write	Name:	DisableCMD
Value: 2
(PID) Process:	(7388) Nerest.PC.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
Operation:	write	Name:	EnableLUA
Value: 0
(PID) Process:	(7388) Nerest.PC.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce
Operation:	write	Name:	Java
Value: C:\Users\admin\AppData\Local\Temp\Nerest.PC.exe
(PID) Process:	(7388) Nerest.PC.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe
Operation:	write	Name:	Debugger
Value: C:\Users\admin\AppData\Local\Temp\Nerest.PC.exe
(PID) Process:	(7388) Nerest.PC.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe
Operation:	write	Name:	Debugger
Value: C:\Users\admin\AppData\Local\Temp\Nerest.PC.exe
(PID) Process:	(7388) Nerest.PC.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Uninstall
Operation:	write	Name:	NoAddRemovePrograms
Value: 1
(PID) Process:	(7388) Nerest.PC.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
Operation:	write	Name:	HideFastUserSwitching
Value: 1
(PID) Process:	(7388) Nerest.PC.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Advanced
Operation:	write	Name:	NoClose
Value: 1
(PID) Process:	(7388) Nerest.PC.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
Operation:	write	Name:	DisableLockWorkstation
Value: 1
(PID) Process:	(7388) Nerest.PC.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
Operation:	write	Name:	DisableChangePassword
Value: 1

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
7388	Nerest.PC.exe	\Device\Harddisk0\DR0		—
		MD5:—	SHA256:—
7388	Nerest.PC.exe	C:\Users\admin\AppData\Local\Temp\Time.ini		text
		MD5:EB13B7EAF7F30D348E471F0907B31AAC	SHA256:94BA214735774FB4E68BE906C3E181D29C71DBBCD10540E70BA7021FCF5EA3AA
7388	Nerest.PC.exe	C:\Users\admin\AppData\Local\Temp\Time2.ini		text
		MD5:2FDCCD5C10B3CBB546810988141D2C90	SHA256:244D37FA79BB4E9FAA2F131C05067AC577082A42348CD3C2AFD1498BD198BEE3
7388	Nerest.PC.exe	C:\MBR.bin		binary
		MD5:0DA182957D5B2BD11A50DA7293ACEB77	SHA256:4EAE113930004A304FCAB258B075265F9E934A46D9CA09665258ACCDA77F87D2

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

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HTTP(S) requests

TCP/UDP connections

DNS requests

Threats

HTTP requests

PID	Process	Method	HTTP Code	IP	URL	CN	Type	Size	Reputation
5496	MoUsoCoreWorker.exe	GET	200	23.216.77.25:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
5496	MoUsoCoreWorker.exe	GET	200	23.35.229.160:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
8088	SIHClient.exe	GET	200	23.35.229.160:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl	unknown	—	—	whitelisted
8088	SIHClient.exe	GET	200	23.35.229.160:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl	unknown	—	—	whitelisted
6544	svchost.exe	GET	200	184.30.131.245:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	unknown	—	—	whitelisted

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID	Process	IP	Domain	ASN	CN	Reputation
4	System	192.168.100.255:137	—	—	—	whitelisted
—	—	4.231.128.59:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
2104	svchost.exe	4.231.128.59:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
5496	MoUsoCoreWorker.exe	23.216.77.25:80	crl.microsoft.com	Akamai International B.V.	DE	whitelisted
5496	MoUsoCoreWorker.exe	23.35.229.160:80	www.microsoft.com	AKAMAI-AS	DE	whitelisted
4220	RUXIMICS.exe	4.231.128.59:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
3216	svchost.exe	172.211.123.249:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	FR	whitelisted
6544	svchost.exe	20.190.160.131:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
6544	svchost.exe	184.30.131.245:80	ocsp.digicert.com	AKAMAI-AS	US	whitelisted

DNS requests

Domain	IP	Reputation
google.com	142.250.185.142	whitelisted
crl.microsoft.com	23.216.77.25 23.216.77.18 23.216.77.10	whitelisted
www.microsoft.com	23.35.229.160	whitelisted
client.wns.windows.com	172.211.123.249	whitelisted
login.live.com	20.190.160.131 20.190.160.66 20.190.160.3 20.190.160.22 40.126.32.134 40.126.32.140 20.190.160.65 20.190.160.67	whitelisted
ocsp.digicert.com	184.30.131.245	whitelisted
settings-win.data.microsoft.com	4.231.128.59	whitelisted
slscr.update.microsoft.com	4.175.87.197	whitelisted
fe3cr.delivery.mp.microsoft.com	13.85.23.206	whitelisted

Threats

No threats detected

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No debug info

General Info

Nerest.PC.exe

9D3031DB970D3A71CC0B3B1B805A6505

455E9A12E22C2E0BE66F885C90AE461E36CC707E

C2A381E168715C2759D01697CDAE7F00A7FDE1EB0235026D916ACCE12BE0A20C

98304:jQkmJvhWsCkQVoG0m2p6sl1VZMzYgq7byqfYG71S6b6hus33vkzyJz9tLqG:yF83

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

UAC/LUA settings modification

WINLOCKER mutex has been found

Changes the autorun value in the registry

Changes image file execution options

Disables the Run the Start menu

Disables the Shutdown in the Start menu

Disables the Find the Start menu

Disables the LogOff the Start menu

WINLOCKER has been detected (YARA)

SUSPICIOUS

Creates file in the systems drive root

Reads security settings of Internet Explorer

There is functionality for taking screenshot (YARA)

INFO

Checks supported languages

Reads the computer name

Create files in a temporary directory

UPX packer has been detected

Compiled with Borland Delphi (YARA)

Malware configuration

Static information

TRiD

EXIF

EXE

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings