MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21bfd3d2ac865b2e52da9146d8975ebbb1070fb7309a686ea2ad01e0444cea96. 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

UmbraRAT

Vendor detections: 9

Intelligence 9 IOCs YARA 39 File information Comments

SHA256 hash:	21bfd3d2ac865b2e52da9146d8975ebbb1070fb7309a686ea2ad01e0444cea96
SHA3-384 hash:	f497acc22ccb72f4d234d430ef7ca9963da3f4a4ba259e57d26ffc487c7a9032824d4204caaf084efc257f57b7e7e2c9
SHA1 hash:	213339212e05bcc4e72bc3ffa4bcb2eaea044690
MD5 hash:	65ce1d4af4fd0dcf420179178c015a3b
humanhash:	saturn-william-ohio-nevada
File name:	winupd.exe
Download:	download sample
Signature	UmbraRAT Create hunting rule
File size:	6'298'624 bytes
First seen:	2026-10-29 07:49:43 UTC
Last seen:	Never
File type:	exe
MIME type:	application/vnd.microsoft.portable-executable
imphash	aaae61ac3760d310385c39893bbcd2c9 (4 x UmbraRAT)
ssdeep	98304:mD6e4tXjjIs/LQnmUrrvT7hgKezozwV7WH6JTfH7hgD:q4tTUELQ3vEP7WH6JTfNg
TLSH	T12456232BD89959ABF016CDB1D66EB821115F9CD86E112DD8D28E4B667C033B0BF35EC0
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	M15TRUST
Tags:	exe UmbraRAT

M15TRUST

Golang written malware with Solana blockchain based C2

Intelligence

File Origin

# of uploads :

# of downloads :

209

Origin country :

Vendor Threat Intelligence

No detections

Malware family:

n/a

ID:

File name:

exe

Verdict:

No threats detected

Analysis date:

2026-10-29 07:51:10 UTC

Tags:

pecompact

Link:

https://app.any.run/tasks/0c9301fb-b819-4401-aff0-7ecb80a211dd

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/95935/

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6ae2fabeb121dd519dce923c

Tags:

malware

Verdict:

Malicious

Labled as:

Win/malicious_confidence_60%

Link:

https://www.hybrid-analysis.com/sample/21bfd3d2ac865b2e52da9146d8975ebbb1070fb7309a686ea2ad01e0444cea96

Verdict:

Clean

File Type:

exe x64

First seen:

2026-10-29T07:24:00Z UTC

Last seen:

2026-10-29T07:36:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/21bfd3d2ac865b2e52da9146d8975ebbb1070fb7309a686ea2ad01e0444cea96/results?tab=lookup

Verdict:

Unknown

Link:

https://analyze.intezer.com/analyses/0f71b606-fa47-4b26-a9d9-be9e09fa2cbc

Result

Threat name:

n/a

Detection:

malicious

Classification:

evad

Score:

68 / 100

Link:

https://www.joesandbox.com/analysis/1994492

Signature

Antivirus / Scanner detection for submitted sample

Found direct / indirect Syscall (likely to bypass EDR)

Hides threads from debuggers

Multi AV Scanner detection for submitted file

Unusual module load detection (module proxying)

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/21bfd3d2ac865b2e52da9146d8975ebbb1070fb7309a686ea2ad01e0444cea96

Verdict:

inconclusive

YARA:

4 match(es)

Tags:

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

Link:

https://app.malva.re/file/65ce1d4af4fd0dcf420179178c015a3b

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/21bfd3d2ac865b2e52da9146d8975ebbb1070fb7309a686ea2ad01e0444cea96/

Threat name:

Win64.Trojan.AdvML

Status:

Malicious

First seen:

2026-10-29 07:50:23 UTC

File Type:

PE+ (Exe)

Extracted files:

AV detection:

9 of 38 (23.68%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=eg75huvmqzns4uw2sfdnrf26xoyqod5xgcngq3vcvua6arcm5kla._file

Result

Malware family:

n/a

Score:

5/10

Tags:

defense_evasion discovery

Link:

https://tria.ge/reports/261029-jpd2fsxx9r/

Behaviour

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of NtSetInformationThreadHideFromDebugger

Malware Family:

n/a

Verdict:

Suspicious

Tags:

evasion

YARA:

n/a

Link:

https://app.threat.zone/submission/389b7144-569f-4860-82a7-21a46f5a5314

Unpacked files

SH256 hash:

21bfd3d2ac865b2e52da9146d8975ebbb1070fb7309a686ea2ad01e0444cea96

MD5 hash:

65ce1d4af4fd0dcf420179178c015a3b

SHA1 hash:

213339212e05bcc4e72bc3ffa4bcb2eaea044690

Link:

https://www.unpac.me/results/ff8056d1-3f49-416e-8a02-a2ac9f7d8b4d/

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

Threat name:

Malicious File

Score:

0.72

Link:

https://yomi.yoroi.company/submissions/21bfd3d2ac865b2e52da9146d8975ebbb1070fb7309a686ea2ad01e0444cea96

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:	Bolonyokte Create hunting rule
Author:	Jean-Philippe Teissier / @Jipe_
Description:	UnknownDotNet RAT - Bolonyokte

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:	dependsonpythonailib Create hunting rule
Author:	Tim Brown
Description:	Hunts for dependencies on Python AI libraries

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:	exploit_any_poppopret Create hunting rule
Author:	Jeff White [karttoon@gmail.com] @noottrak
Description:	Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.

Rule name:	golang Create hunting rule

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

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

Rule name:	pe_detect_tls_callbacks Create hunting rule

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:	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:	test_rule_vldslv Create hunting rule

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/

Rule name:	WIN_Malware_Fantom_ForgeAuto_98e6f354_Extrait Create hunting rule
Author:	Marjoriefort
Description:	Detects Fantom (pe, etat extrait)

Rule name:	WIN_Malware_PythonStealer_ForgeAuto_b24cb5bd Create hunting rule
Author:	Marjoriefort
Description:	Detects PythonStealer (pe, etat binaire)

Rule name:	WIN_Malware_Unknown_ForgeAuto_30f84f37 Create hunting rule
Author:	Marjoriefort
Description:	Detects Unknown (pe, etat binaire)

Rule name:	WIN_Sample_Unique_69354b41 Create hunting rule
Author:	Marjoriefort
Description:	Specimen unique (soumission Bazaar) - strings distinctifs propres au sample
Reference:	69354b41e10daf03d3f3af881b32d5c0fec56b1cfe96629fd4c5263413a42854.exe

File information

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

Cape

https://www.capesandbox.com/analysis/95935/

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