MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f5c9e4ad8ca1843aaa87eb0e3ea160e8256c5da50349ac186bb7ee83704224f2. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry

DefendNot

Vendor detections: 13

Intelligence 13 IOCs YARA 32 File information Comments

SHA256 hash:	f5c9e4ad8ca1843aaa87eb0e3ea160e8256c5da50349ac186bb7ee83704224f2
SHA3-384 hash:	8886848e2d6b56431795190c512d2ed5ee7a9b971c251a1845bbc8da521f5b13b298e50128faf93b92cde3e098255f7b
SHA1 hash:	e43bcdcd1db7aab0af5cab1fac4a714244fa4dde
MD5 hash:	a3dc49c98a65d1be73b6239ef879f119
humanhash:	undress-three-freddie-golf
File name:	592482_vcomp140_12652a425a.exe
Download:	download sample
Signature	DefendNot Create hunting rule
File size:	11'587'072 bytes
First seen:	2026-09-25 21:45:52 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	d42595b695fc008ef2c56aabd8efd68e (1'398 x Vidar, 331 x RemusStealer, 134 x Stealc)
ssdeep	98304:kEBBm3eksOLFo0Auxn2BJcdf0m+ApQJneLpxRAE2bKRPNqQ5hLLJ/slTlXT+mYV5:khetOxrncncOApmneSrbnQ5Z5sTjVYH
TLSH	T1ADC69D03ECA545E9C1ADE5358A669263BB717C480F2523D33B90F3282F76BD06EB6750
TrID	33.1% (.EXE) Win64 Executable (generic) (6522/11/2) 25.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 10.4% (.ICL) Windows Icons Library (generic) (2059/9) 10.3% (.EXE) OS/2 Executable (generic) (2029/13) 10.1% (.EXE) Generic Win/DOS Executable (2002/3)
Magika	pebin
Reporter	aachum
Tags:	87-120-104-147 DefendNot DefendnotLoader exe

iamaachum

C2:
errakgrwenmjibedi.cc
kaiangelsystems.rest

Intelligence

File Origin

# of uploads :

# of downloads :

162

Origin country :

Vendor Threat Intelligence

No detections

Malware family:

n/a

ID:

File name:

exe

Verdict:

Malicious activity

Analysis date:

2026-09-22 12:59:39 UTC

Tags:

autoit stealer evasion loader rust auto-reg auto generic susp-powershell golang defendnot tool

Link:

https://app.any.run/tasks/b07c877b-6d2a-4149-96d9-2884da64ae99

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/89057/

Detection(s):

SecuriteInfo.com.Trojan.Siggen34.18764.5638.27295.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a file

Creating a file in the Windows subdirectories

Creating a process from a recently created file

Creating a process with a hidden window

Creating a file in the %temp% directory

Launching a process

Loading a suspicious library

Forced system process termination

Searching for synchronization primitives

Сreating synchronization primitives

Adding an exclusion to Microsoft Defender

Unauthorized injection to a system process

Enabling autorun by creating a file

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

anti-vm crypto dropper golang packed

Link:

https://www.filescan.io/uploads/6ab6ebb0f57ce1b90820f8d9/reports/464e5121-8998-453b-acf3-389db5e29894/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_60%

Link:

https://www.hybrid-analysis.com/sample/f5c9e4ad8ca1843aaa87eb0e3ea160e8256c5da50349ac186bb7ee83704224f2

Verdict:

Malicious

File Type:

exe x64

First seen:

2026-09-22T11:51:00Z UTC

Last seen:

2026-09-24T08:22:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/f5c9e4ad8ca1843aaa87eb0e3ea160e8256c5da50349ac186bb7ee83704224f2/results?tab=lookup

Verdict:

Suspicious

Link:

https://analyze.intezer.com/analyses/05d85387-b8cc-46ae-bb73-cc30bccc49e6

Result

Threat name:

defendnot Loader

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1978381

Signature

Adds a directory exclusion to Windows Defender

AI detected malicious Powershell script

Allocates memory in foreign processes

Antivirus detection for URL or domain

Creates a thread in another existing process (thread injection)

Drops executables to the windows directory (C:\Windows) and starts them

Found API chain indicative of debugger detection

Injects a PE file into a foreign processes

Injects code into the Windows Explorer (explorer.exe)

Joe Sandbox ML detected suspicious sample

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet

Sigma detected: Suspicious Script Execution From Temp Folder

Suspicious powershell command line found

System process connects to network (likely due to code injection or exploit)

Tries to detect sandboxes / dynamic malware analysis system (Installed program check)

Writes to foreign memory regions

Yara detected defendnot Loader

Behaviour

Behavior Graph:

Download SVG

Score:

73%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/f5c9e4ad8ca1843aaa87eb0e3ea160e8256c5da50349ac186bb7ee83704224f2

Gathering data

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/f5c9e4ad8ca1843aaa87eb0e3ea160e8256c5da50349ac186bb7ee83704224f2/

Threat name:

Win64.Dropper.Generic

Status:

Suspicious

First seen:

2026-09-23 00:59:17 UTC

File Type:

PE+ (Exe)

AV detection:

11 of 36 (30.56%)

Threat level:

3/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=6xe6jlmmugcdvkuh5mhd5ila5aswyxnfane2ygdlw7xig4ccetza._file

Verdict:

malicious

Label(s):

HACKTOOL_DefendNot

Link:

https://reports.threatray.com/f07cc05b-05b9-4882-8f81-1ddbc7b79af6

Result

Malware family:

defendnot

Score:

10/10

Tags:

family:defendnot defense_evasion discovery execution hacktool persistence privilege_escalation

Link:

https://tria.ge/reports/260925-1mryzazzcs/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Executes a command shell one-liner

Reads the TCP/IP host and domain name from the registry

Drops file in Program Files directory

Drops file in Windows directory

Enumerates connected drives

Executes dropped EXE

Loads dropped DLL

Command and Scripting Interpreter: PowerShell

Detects Defendnot

Family: Defendnot

Unpacked files

SH256 hash:

f5c9e4ad8ca1843aaa87eb0e3ea160e8256c5da50349ac186bb7ee83704224f2

MD5 hash:

a3dc49c98a65d1be73b6239ef879f119

SHA1 hash:

e43bcdcd1db7aab0af5cab1fac4a714244fa4dde

Link:

https://www.unpac.me/results/04e7f10d-bb18-4bd7-9ff1-3154d4ace25a/

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/f5c9e4ad8ca1843aaa87eb0e3ea160e8256c5da50349ac186bb7ee83704224f2

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:	command_and_control Create hunting rule
Author:	CD_R0M_
Description:	This rule searches for common strings found by malware using C2. Based on a sample used by a Ransomware group

Rule name:	CP_Script_Inject_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	Detects attempts to inject code into another process across PE, ELF, Mach-O binaries

Rule name:	DebuggerCheck__QueryInfo Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerException__ConsoleCtrl Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerException__SetConsoleCtrl Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

Rule name:	DetectGoMethodSignatures Create hunting rule
Author:	Wyatt Tauber
Description:	Detects Go method signatures in unpacked Go binaries

Rule name:	Detect_Go_GOMAXPROCS Create hunting rule
Author:	Obscurity Labs LLC
Description:	Detects Go binaries by the presence of runtime.GOMAXPROCS in the runtime metadata

Rule name:	detect_powershell Create hunting rule
Author:	daniyyell
Description:	Detects suspicious PowerShell activity related to malware execution

Rule name:	GoBinTest Create hunting rule

Rule name:	golang Create hunting rule

Rule name:	Golangmalware Create hunting rule
Author:	Dhanunjaya
Description:	Malware in Golang

Rule name:	golang_binary_string Create hunting rule
Description:	Golang strings present

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	golang_duffcopy_amd64 Create hunting rule

Rule name:	Golang_Find_CSC846 Create hunting rule
Author:	Ashar Siddiqui
Description:	Find Go Signatuers

Rule name:	Golang_Find_CSC846_Simple Create hunting rule
Author:	Ashar Siddiqui
Description:	Find Go Signatuers

Rule name:	HiveRansomware Create hunting rule
Author:	Dhanunjaya
Description:	Yara Rule To Detect Hive V4 Ransomware

Rule name:	identity_golang Create hunting rule
Author:	Eric Yocam
Description:	find Golang malware

Rule name:	IronTiger_HTTPBrowser_Dropper Create hunting rule
Author:	Cyber Safety Solutions, Trend Micro
Description:	Iron Tiger Malware - HTTPBrowser Dropper
Reference:	http://goo.gl/T5fSJC

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	ProgramLanguage_Golang Create hunting rule
Author:	albertzsigovits
Description:	Application written in Golang programming language

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	RemusStealer_GoPayload Create hunting rule
Author:	burger
Description:	Detects RemusStealer Go-compiled payload

Rule name:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	SEH__vectored Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	SHA1_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA1 constants

Rule name:	SHA512_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA384/SHA512 constants

Rule name:	Suspicious_Golang_Binary Create hunting rule
Author:	Tim Machac
Description:	Triage: Golang-compiled binary with suspicious OS/persistence/network strings (not family-specific)

Rule name:	Sus_CMD_Powershell_Usage Create hunting rule
Author:	XiAnzheng
Description:	May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

Rule name:	ThreadControl__Context Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE Create hunting rule
Author:	CYFARE
Description:	Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:	https://cyfare.net/