MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4205dadfe0537be4e1ecd8440aa32dfea0d4fdbcff17e08fc36b8ad1f189fcd. 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: 6

Intelligence 6 IOCs YARA 19 File information Comments

SHA256 hash:	a4205dadfe0537be4e1ecd8440aa32dfea0d4fdbcff17e08fc36b8ad1f189fcd
SHA3-384 hash:	66d5596cdf0248dcc24597b30ff7bc9e899f1cdf314f2fe9070dc6ff55cb6f372bd11e5f291f6782c0ca7b14b3f0aa11
SHA1 hash:	ab6be412c6110b72fdd438e245e4192d1c532cce
MD5 hash:	2105271d7624cd4c01ca522a14886707
humanhash:	apart-california-eight-mike
File name:	file
Download:	download sample
Signature	RustyStealer Create hunting rule
File size:	2'801'664 bytes
First seen:	2026-09-02 13:43:44 UTC
Last seen:	2026-09-03 20:15:07 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	51cc4d5e54e2ea538f0e5e224f1f373f (1 x RustyStealer)
ssdeep	49152:Z7M4meb2pbWBR1HpIksZDUVVHIw09IU6iW:Z/mecsPsZDUVtITK+W
TLSH	T18CD57C43F6A6C0ECC569C0B4C31AA532BA36BC894B2579EB1BD45B353E66FC05A3C705
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
dhash icon	cc13794d4d69338a (1 x RustyStealer)
Reporter	Bitsight
Tags:	BB4.file dropped-by-gcleaner exe f RustyStealer

Bitsight

url: http://91.92.242.236/service

Intelligence

File Origin

# of uploads :

# of downloads :

162

Origin country :

Vendor Threat Intelligence

No detections

Malware family:

n/a

ID:

File name:

exe

Verdict:

No threats detected

Analysis date:

2026-09-02 13:52:53 UTC

Tags:

rust ip-check

Link:

https://app.any.run/tasks/be9c851d-ff6b-4534-9de5-6de57c333639

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/83671/

Result

Verdict:

Clean

Maliciousness:

Behaviour

Creating a file in the %temp% directory

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

adaptive-context anti-vm base64 certreq cmd crypto expand fingerprint lolbin packed reconnaissance runonce rust

Link:

https://www.filescan.io/uploads/6a98282ece18125b072eacba/reports/11b36694-12b6-4815-899e-cf60fbaecb90/overview

Verdict:

Malicious

Link:

https://www.hybrid-analysis.com/sample/a4205dadfe0537be4e1ecd8440aa32dfea0d4fdbcff17e08fc36b8ad1f189fcd

Verdict:

Unknown

File Type:

exe x64

Link:

https://opentip.kaspersky.com/a4205dadfe0537be4e1ecd8440aa32dfea0d4fdbcff17e08fc36b8ad1f189fcd/results?tab=lookup

Verdict:

Suspicious

Link:

https://analyze.intezer.com/analyses/7b9f19c1-3508-4147-ad6a-4d2e7b178962

Score:

97%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/a4205dadfe0537be4e1ecd8440aa32dfea0d4fdbcff17e08fc36b8ad1f189fcd

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/2105271d7624cd4c01ca522a14886707

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a4205dadfe0537be4e1ecd8440aa32dfea0d4fdbcff17e08fc36b8ad1f189fcd/

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=uqqf3lp6au334tq6zwcebkrs37va2t63z7yx4ch4g24k2hyyt7gq._file

Result

Malware family:

n/a

Score:

8/10

Tags:

defense_evasion discovery execution spyware stealer

Link:

https://tria.ge/reports/260902-q1xq9sfq7v/

Behaviour

Kills process with taskkill

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Hide Artifacts: Ignore Process Interrupts

Discovers running processes

Drops Chrome extension

Looks up external IP address via web service

Reads user/profile data of web browsers

Badlisted process makes network request

Command and Scripting Interpreter: PowerShell

Unpacked files

SH256 hash:

a4205dadfe0537be4e1ecd8440aa32dfea0d4fdbcff17e08fc36b8ad1f189fcd

MD5 hash:

2105271d7624cd4c01ca522a14886707

SHA1 hash:

ab6be412c6110b72fdd438e245e4192d1c532cce

Link:

https://www.unpac.me/results/4fcdfc0b-17d2-4174-9c15-be2c4a092c2e/

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/a4205dadfe0537be4e1ecd8440aa32dfea0d4fdbcff17e08fc36b8ad1f189fcd

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

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

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:	reverse_http Create hunting rule
Author:	CD_R0M_
Description:	Identify strings with http reversed (ptth)

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

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:	test_rule_vldslv Create hunting rule

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/

Rule name:	vmdetect Create hunting rule
Author:	nex
Description:	Possibly employs anti-virtualization techniques

Rule name:	WIN_ClickFix_Detection Create hunting rule
Author:	dogsafetyforeverone
Description:	Detects ClickFix social engineering technique using 'Verify you are human' messages and malicious PowerShell commands
Reference:	ClickFix social engineering and malicious PowerShell commands

Rule name:	WIN_WebSocket_Base64_C2_20250726 Create hunting rule
Author:	dogsafetyforeverone
Description:	Detects configuration strings used by malware to specify WebSocket command-and-control endpoints inside Base64-encoded data. It looks for prefixes such as '#ws://' or '#wss://' that were found in QuasarRAT configuration data.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

RustyStealer

exe a4205dadfe0537be4e1ecd8440aa32dfea0d4fdbcff17e08fc36b8ad1f189fcd

(this sample)

Dropped by

Gcleaner

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/83671/

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