MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2fdd91ccd5fedb001d13ccbf881f08f45df8dae3b307f0ad71f384189f282971. 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 38 File information Comments

SHA256 hash:	2fdd91ccd5fedb001d13ccbf881f08f45df8dae3b307f0ad71f384189f282971
SHA3-384 hash:	cb6b34f1779a54237af1805ff4f5f5b185ee4db69c820801c38b0464c5f53777ae4c62aa1fc341c63a6af0491c694c6f
SHA1 hash:	ed023e580c8153344c5618a2bb6c8714b54745bc
MD5 hash:	ed1f8203f8a09a39be241968ce536f56
humanhash:	hotel-black-lake-washington
File name:	defpatch.exe
Download:	download sample
Signature	UmbraRAT Create hunting rule
File size:	6'248'960 bytes
First seen:	2026-10-29 21:04:58 UTC
Last seen:	Never
File type:	exe
MIME type:	application/vnd.microsoft.portable-executable
imphash	aaae61ac3760d310385c39893bbcd2c9 (4 x UmbraRAT)
ssdeep	98304:+vRvLhsKGtA+WUYXuAUTOIDPEd4ozwV7raezGaZ:+JN1G64C5mZ7WQz
TLSH	T1EE56232BE8986D9BF016CDB2926A7431411F98D83E212DD8D29D4B66BC173B07F35ED0
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 :

196

Origin country :

Vendor Threat Intelligence

No detections

Malware family:

n/a

ID:

File name:

exe

Verdict:

No threats detected

Analysis date:

2026-10-29 21:10:02 UTC

Tags:

pecompact

Link:

https://app.any.run/tasks/6679fda9-5779-4b3e-896e-1817b0762834

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/95991/

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6ae3b51cb175ade21dce8761

Tags:

malware

Verdict:

Malicious

Labled as:

Win/malicious_confidence_60%

Link:

https://www.hybrid-analysis.com/sample/2fdd91ccd5fedb001d13ccbf881f08f45df8dae3b307f0ad71f384189f282971

Verdict:

Clean

File Type:

exe x64

First seen:

2026-10-29T20:45:00Z UTC

Last seen:

2026-10-29T21:06:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/2fdd91ccd5fedb001d13ccbf881f08f45df8dae3b307f0ad71f384189f282971/results?tab=lookup

Verdict:

Unknown

Link:

https://analyze.intezer.com/analyses/bed05abd-00e2-4627-b675-4ec260e7ba7d

Result

Threat name:

n/a

Detection:

malicious

Classification:

evad

Score:

72 / 100

Link:

https://www.joesandbox.com/analysis/1994911

Signature

Antivirus / Scanner detection for submitted sample

Found direct / indirect Syscall (likely to bypass EDR)

Hides threads from debuggers

Installs new ROOT certificates

Multi AV Scanner detection for submitted file

Unusual module load detection (module proxying)

Behaviour

Behavior Graph:

Download SVG

Score:

98%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/2fdd91ccd5fedb001d13ccbf881f08f45df8dae3b307f0ad71f384189f282971

Verdict:

inconclusive

YARA:

4 match(es)

Tags:

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

Link:

https://app.malva.re/file/ed1f8203f8a09a39be241968ce536f56

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/2fdd91ccd5fedb001d13ccbf881f08f45df8dae3b307f0ad71f384189f282971/

Threat name:

Win64.Trojan.Ravartar

Status:

Malicious

First seen:

2026-10-29 21:06:10 UTC

File Type:

PE+ (Exe)

Extracted files:

AV detection:

23 of 38 (60.53%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=f7ozdtgv73nqahitzs7yqhyi6ro7rwxdwmd7bllr6ocbrhziffyq._file

Result

Malware family:

n/a

Score:

5/10

Tags:

defense_evasion discovery

Link:

https://tria.ge/reports/261029-zxdnnags3n/

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/1d0f0d81-4efc-4efc-952d-31eea33692b3

Unpacked files

SH256 hash:

2fdd91ccd5fedb001d13ccbf881f08f45df8dae3b307f0ad71f384189f282971

MD5 hash:

ed1f8203f8a09a39be241968ce536f56

SHA1 hash:

ed023e580c8153344c5618a2bb6c8714b54745bc

Link:

https://www.unpac.me/results/2583b954-e28d-491f-a836-67cbf96c20bc/

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/2fdd91ccd5fedb001d13ccbf881f08f45df8dae3b307f0ad71f384189f282971

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:	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:	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:	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/95991/

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