MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bc666f8338e12e90bcfd891c794821442eb53146be3c22325f7f47aae582ea70. 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

VShell

Vendor detections: 15

Intelligence 15 IOCs YARA 31 File information Comments

SHA256 hash:	bc666f8338e12e90bcfd891c794821442eb53146be3c22325f7f47aae582ea70
SHA3-384 hash:	0cd250a56566f205974b6253cf76eb0c0d1f8656ea8c8f038d424dd244a09b0aa296428f9ebbfc35a1e0b6f9b7534598
SHA1 hash:	fb6f5ffdfdc26e972ecf6fbe6bd4acd51d86e1c3
MD5 hash:	0659fdb6c977b558292b7c4ef3bdaccb
humanhash:	fruit-magnesium-low-december
File name:	bc666f8338e12e90bcfd891c794821442eb53146be3c22325f7f47aae582ea70.exe
Download:	download sample
Signature	VShell Create hunting rule
File size:	3'584 bytes
First seen:	2026-09-08 02:03:53 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	e82dd51b077167be63c004bed23d0c1e (457 x VShell, 40 x NetWalker, 2 x GuLoader)
ssdeep	48:6Icwm0gt2WSJ8zrD7TLjpSpc1ZsSYr8XxhxhwcRaK:4jJtQSNSYp
TLSH	T183716188F3276EF1E43C46F900D3A614D059ABB8C250BF4D5E60381D3C210BA255AF97
TrID	21.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 21.2% (.EXE) Win64 Executable (generic) (6522/11/2) 16.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 14.6% (.EXE) Win32 Executable (generic) (4504/4/1) 6.6% (.ICL) Windows Icons Library (generic) (2059/9)
Magika	pebin
Reporter	whack_sh
Tags:	exe vshell whack.sh

Intelligence

File Origin

# of uploads :

# of downloads :

127

Origin country :

Vendor Threat Intelligence

No detections

Malware family:

n/a

ID:

File name:

exe

Verdict:

Malicious activity

Analysis date:

2026-09-08 02:06:00 UTC

Tags:

payload vshell rat golang

Link:

https://app.any.run/tasks/28760bef-f025-460b-b512-6ecb2b39add2

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/84460/

Detection(s):

Win.Trojan.Mikey-10038331-0

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6ac76ab562124a8529d107cd

Tags:

virus

Result

Verdict:

Malware

Maliciousness:

Behaviour

Connection attempt

Sending a custom TCP request

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

evasive microsoft_visual_cc packed

Link:

https://www.filescan.io/uploads/6a9f6d2433870a4f52b08a9b/reports/b71f3c4e-52c2-4b17-a886-7e1b6ae8d914/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/bc666f8338e12e90bcfd891c794821442eb53146be3c22325f7f47aae582ea70

Verdict:

Malicious

File Type:

exe x32

First seen:

2026-08-24T16:59:00Z UTC

Last seen:

2026-09-09T18:29:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/bc666f8338e12e90bcfd891c794821442eb53146be3c22325f7f47aae582ea70/results?tab=lookup

Malware family:

Knight

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/38511889-7454-467b-bb27-49eb0a1135f4

Result

Threat name:

n/a

Detection:

malicious

Classification:

evad

Score:

68 / 100

Link:

https://www.joesandbox.com/analysis/1969687

Signature

Antivirus / Scanner detection for submitted sample

Detected unpacking (creates a PE file in dynamic memory)

Multi AV Scanner detection for submitted file

Unusual module load detection (module proxying)

Behaviour

Behavior Graph:

Download SVG

Score:

85%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/bc666f8338e12e90bcfd891c794821442eb53146be3c22325f7f47aae582ea70

Verdict:

inconclusive

YARA:

4 match(es)

Tags:

Executable PDB Path PE (Portable Executable) PE File Layout Win 32 Exe x86

Link:

https://app.malva.re/file/0659fdb6c977b558292b7c4ef3bdaccb

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/bc666f8338e12e90bcfd891c794821442eb53146be3c22325f7f47aae582ea70/

Threat name:

Win32.Trojan.Mikey

Status:

Malicious

First seen:

2026-08-24 22:24:32 UTC

AV detection:

22 of 24 (91.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=xrtg7azy4exjbph5reohssbbiqxlkmkgxy6cems7p5d2vzmc5jya._file

Verdict:

malicious

Label(s):

SNOWLIGHT

Link:

https://reports.threatray.com/a0860ecb-013f-4b6f-88bc-4e3da1c1df5a

Result

Malware family:

vshell

Score:

10/10

Tags:

family:vshell backdoor discovery rat

Link:

https://tria.ge/reports/260908-chfs5sbm4w/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

System Location Discovery: System Language Discovery

Detects VSHELL Backdoor

Family: VShell

Unpacked files

SH256 hash:

bc666f8338e12e90bcfd891c794821442eb53146be3c22325f7f47aae582ea70

MD5 hash:

0659fdb6c977b558292b7c4ef3bdaccb

SHA1 hash:

fb6f5ffdfdc26e972ecf6fbe6bd4acd51d86e1c3

Link:

https://www.unpac.me/results/fae214e6-a749-4119-b31b-eed68a385b99/

Malware family:

VShell

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/bc666f8338e1/report/overview.html

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

Threat name:

Suspicious File

Score:

0.35

Link:

https://yomi.yoroi.company/submissions/bc666f8338e12e90bcfd891c794821442eb53146be3c22325f7f47aae582ea70

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__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:	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_Obfuscation Create hunting rule
Author:	daniyyell
Description:	Detects obfuscated PowerShell commands commonly used in malicious scripts.

Rule name:	Gentlemen_Ransomware_Binary Create hunting rule
Author:	Bedrock Safeguard Inc.
Description:	Detects The Gentlemen ransomware binary (Go/Garble)
Reference:	https://github.com/Bedrock-Safeguard/gentlemen-decryptor

Rule name:	GoBinTest Create hunting rule

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

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

Rule name:	Indicator_MiniDumpWriteDump Create hunting rule
Author:	Obscurity Labs LLC
Description:	Detects PE files and PowerShell scripts that use MiniDumpWriteDump either through direct imports or string references

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

Rule name:	mht_inside_word Create hunting rule
Author:	dPhish
Description:	Detect embedded mht files inside microsfot word.

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:	SuspiciousDll Create hunting rule
Author:	martclau
Description:	Detects SolarWinds Orion backdoor

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:	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/

File information

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

Web download

VShell

exe bc666f8338e12e90bcfd891c794821442eb53146be3c22325f7f47aae582ea70

(this sample)

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/84460/

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