MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fa26fc81be65cf838b8619888564eab5888e017c017f29308852570f61aa028d. 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

RustyStealer

Vendor detections: 10

Intelligence 10 IOCs YARA 21 File information Comments

SHA256 hash:	fa26fc81be65cf838b8619888564eab5888e017c017f29308852570f61aa028d
SHA3-384 hash:	2908b12295e2a534706cbb3ff6ae4d0891e6c1252c175396a1f78b9ae3d1fd192227ff86fe6e79b6e8abf3b201d25741
SHA1 hash:	b4f1c2dfdac3e70248d56e6fb72a373dc01e15ca
MD5 hash:	d796641f1c891e4dc465f1b9cd8ec689
humanhash:	early-carpet-burger-single
File name:	file
Download:	download sample
Signature	RustyStealer Create hunting rule
File size:	3'885'568 bytes
First seen:	2026-09-07 05:00:56 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	07516f0050e31db0b5c29882b954fba1 (1 x RustyStealer)
ssdeep	49152:YE08QzxLC8C0TbsRpdSh6P1tWyett9DH6+b6EWuaSVJXfRBFtX549iyIeYIU6ii:Y1887TbfEwK+USdBFQXn+
TLSH	T1B9068D03E69581F9D0AEC078C35B9637EB72B88A1630B6EB17D45B612F23F906B1D315
TrID	37.0% (.EXE) Win64 Executable (generic) (6522/11/2) 28.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 11.5% (.EXE) OS/2 Executable (generic) (2029/13) 11.3% (.EXE) Generic Win/DOS Executable (2002/3) 11.3% (.EXE) DOS Executable (generic) (2000/1)
Magika	pebin
Reporter	Bitsight
Tags:	dropped-by-Stealc exe RustyStealer vasya

Bitsight

url: http://87.120.104.147:8080/d/ibrowser

Intelligence

File Origin

# of uploads :

# of downloads :

158

Origin country :

Vendor Threat Intelligence

No detections

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/84297/

Detection(s):

SecuriteInfo.com.Trojan.Siggen33.58519.4136.4004.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Creating a file

Launching a process

Using the Windows Management Instrumentation requests

Sending an HTTP GET request to an infection source

Searching for the window

Moving a recently created file

Creating a process from a recently created file

Creating a file in the %temp% subdirectories

Creating a process with a hidden window

Creating a window

DNS request

Connection attempt to an infection source

Launching a tool to kill processes

Launching the process to create tasks for the scheduler

Sending an HTTP POST request to an infection source

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-debug anti-vm base64 crypto expand lolbin reconnaissance rust

Link:

https://www.filescan.io/uploads/6a9e451e64953f98a80b63e8/reports/56d53675-6aaa-494a-9fd5-134fe4b5d381/overview

Verdict:

Malicious

Labled as:

Mikey.Generic

Link:

https://www.hybrid-analysis.com/sample/fa26fc81be65cf838b8619888564eab5888e017c017f29308852570f61aa028d

Verdict:

Malicious

File Type:

exe x64

First seen:

2026-09-07T02:16:00Z UTC

Last seen:

2026-09-08T19:23:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/fa26fc81be65cf838b8619888564eab5888e017c017f29308852570f61aa028d/results?tab=lookup

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/d4795e9f-7f5c-43f3-8c07-cb189ea6edee

Score:

96%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/fa26fc81be65cf838b8619888564eab5888e017c017f29308852570f61aa028d

Verdict:

inconclusive

YARA:

4 match(es)

Tags:

Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64

Link:

https://app.malva.re/file/d796641f1c891e4dc465f1b9cd8ec689

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/fa26fc81be65cf838b8619888564eab5888e017c017f29308852570f61aa028d/

Threat name:

Win64.Trojan.Readerdb

Status:

Malicious

First seen:

2026-09-07 05:01:35 UTC

File Type:

PE+ (Exe)

AV detection:

27 of 38 (71.05%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=7itpzan6mxhyhc4gdgeikzhkwwei4al4af7ssmeikjlq6ynkakgq._file

Result

Malware family:

n/a

Score:

8/10

Tags:

defense_evasion execution persistence spyware stealer

Link:

https://tria.ge/reports/260907-fnthzayfra/

Behaviour

Kills process with taskkill

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Adds Run key to start application

Reads user/profile data of web browsers

Command and Scripting Interpreter: PowerShell

Unpacked files

SH256 hash:

fa26fc81be65cf838b8619888564eab5888e017c017f29308852570f61aa028d

MD5 hash:

d796641f1c891e4dc465f1b9cd8ec689

SHA1 hash:

b4f1c2dfdac3e70248d56e6fb72a373dc01e15ca

Link:

https://www.unpac.me/results/f15508fa-7882-4eaf-bc84-386b31c066cf/

Malware family:

RustiBrowser

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/fa26fc81be65/report/overview.html

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/fa26fc81be65cf838b8619888564eab5888e017c017f29308852570f61aa028d

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:	Check_OutputDebugStringA_iat Create hunting rule

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

Rule name:	DebuggerCheck__QueryInfo 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:	FreddyBearDropper Create hunting rule
Author:	Dwarozh Hoshiar
Description:	Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.

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

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	ProgramLanguage_Rust Create hunting rule
Author:	albertzsigovits
Description:	Application written in Rust programming language

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

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

Rule name:	Rustyloader_mem_loose Create hunting rule
Author:	James_inthe_box
Description:	Corroded buerloader
Reference:	https://app.any.run/tasks/83064edd-c7eb-4558-85e8-621db72b2a24

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:	telebot_framework Create hunting rule
Author:	vietdx.mb

Rule name:	TelegramAPIMalware_PowerShell_EXE Create hunting rule
Author:	@polygonben
Description:	Hunting for pwsh malware using Telegram for C2

Rule name:	telegram_bot_api Create hunting rule
Author:	rectifyq
Description:	Detects file containing Telegram Bot API

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/

Rule name:	upxHook Create hunting rule
Author:	@r3dbU7z
Description:	Detect artifacts from 'upxHook' - modification of UPX packer
Reference:	https://bazaar.abuse.ch/sample/6352be8aa5d8063673aa428c3807228c40505004320232a23d99ebd9ef48478a/