MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 666c246bd662275c5a7330b4de2e51a7f86556390c0b79b1d774378e7eac8cb0. 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: 14

Intelligence 14 IOCs YARA 11 File information Comments 1

SHA256 hash:	666c246bd662275c5a7330b4de2e51a7f86556390c0b79b1d774378e7eac8cb0
SHA3-384 hash:	53e79be327c2484525969995eb14531f8cd1db38e1802592a27b490c94e632b0c634b96847afb98f7372ead46f1839be
SHA1 hash:	fe36dbf3efa775193b82ce03d1b329d3feced487
MD5 hash:	e211b2b230ef040fe40bc380899990fc
humanhash:	mike-papa-eleven-white
File name:	e211b2b230ef040fe40bc380899990fc
Download:	download sample
Signature	RustyStealer Create hunting rule
File size:	3'414'528 bytes
First seen:	2024-08-05 12:35:39 UTC
Last seen:	2024-08-05 13:20:54 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	dd2f2ecf71382d689c11a821fa0e4cae (1 x RustyStealer)
ssdeep	49152:IpMb87gil2wlWJDddoneZxq03EjlI+pOZjlx+o1Mj+6001YP:9bZRE4+Kr60n
TLSH	T1EBF53A257F8A99ADC05AC074834787726A7170CE0F35BAEF458486783F69AF51F3C298
TrID	48.7% (.EXE) Win64 Executable (generic) (10523/12/4) 23.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 9.3% (.EXE) OS/2 Executable (generic) (2029/13) 9.2% (.EXE) Generic Win/DOS Executable (2002/3) 9.2% (.EXE) DOS Executable Generic (2000/1)
Reporter	zbetcheckin
Tags:	64 CoinMiner exe RustyStealer XMRIG

Intelligence

File Origin

# of uploads :

# of downloads :

399

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

e211b2b230ef040fe40bc380899990fc

Verdict:

Malicious activity

Analysis date:

2024-08-05 12:42:56 UTC

Tags:

loader miner themida

Link:

https://app.any.run/tasks/031f02bd-39f2-4b9f-8bb5-4a7acf5445b2

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=66b0c73a037b02d0daedbaeb

Tags:

Banker Execution Network Stealth Trojan Heur

Result

Verdict:

Clean

Maliciousness:

Behaviour

Searching for the window

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

anti-debug anti-vm microsoft_visual_cc rust

Link:

https://www.filescan.io/uploads/66b0c76184afcda9626527e3/reports/d0af5ccc-430e-4368-9631-50ca5c57605d/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/666c246bd662275c5a7330b4de2e51a7f86556390c0b79b1d774378e7eac8cb0

Result

Verdict:

MALICIOUS

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/5a4ef9c3-c61d-4bff-b552-ebbc9965e52e

Result

Threat name:

Xmrig

Detection:

malicious

Classification:

troj.evad.mine

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1487983

Signature

AI detected suspicious sample

Antivirus detection for dropped file

DNS related to crypt mining pools

Found direct / indirect Syscall (likely to bypass EDR)

Found strings related to Crypto-Mining

Hides threads from debuggers

Machine Learning detection for dropped file

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

PE file contains section with special chars

Queries temperature or sensor information (via WMI often done to detect virtual machines)

Query firmware table information (likely to detect VMs)

Sample is not signed and drops a device driver

Tries to detect process monitoring tools (Task Manager, Process Explorer etc.)

Tries to detect sandboxes / dynamic malware analysis system (registry check)

Tries to detect sandboxes and other dynamic analysis tools (window names)

Uses known network protocols on non-standard ports

Yara detected Xmrig cryptocurrency miner

Behaviour

Behavior Graph:

Download SVG

Score:

86%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/666c246bd662275c5a7330b4de2e51a7f86556390c0b79b1d774378e7eac8cb0

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/666c246bd662275c5a7330b4de2e51a7f86556390c0b79b1d774378e7eac8cb0/

Threat name:

Win32.Trojan.Generic

Status:

Malicious

First seen:

2024-08-02 20:54:22 UTC

File Type:

PE+ (Exe)

AV detection:

8 of 38 (21.05%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=mzwci26wmitvywttgc2n4lsru74gkvrzbqfxtmoxoq3y47vmrsya._file

Verdict:

malicious

Result

Malware family:

xmrig

Score:

10/10

Tags:

family:xmrig evasion miner persistence trojan

Link:

https://tria.ge/reports/240805-psw94awcqq/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Suspicious use of NtSetInformationThreadHideFromDebugger

Adds Run key to start application

Checks whether UAC is enabled

Enumerates connected drives

Checks BIOS information in registry

Executes dropped EXE

Loads dropped DLL

Downloads MZ/PE file

Identifies VirtualBox via ACPI registry values (likely anti-VM)

XMRig Miner payload

xmrig

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/1d947fc3-a4ce-4e5d-a77e-7ee3b9ceecae

Unpacked files

SH256 hash:

666c246bd662275c5a7330b4de2e51a7f86556390c0b79b1d774378e7eac8cb0

MD5 hash:

e211b2b230ef040fe40bc380899990fc

SHA1 hash:

fe36dbf3efa775193b82ce03d1b329d3feced487

Link:

https://www.unpac.me/results/14285200-ae5a-49ff-a151-f4b52453a3e3/

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/666c246bd662275c5a7330b4de2e51a7f86556390c0b79b1d774378e7eac8cb0

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:	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:	pe_detect_tls_callbacks Create hunting rule

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

File information

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

Web download

RustyStealer

exe 666c246bd662275c5a7330b4de2e51a7f86556390c0b79b1d774378e7eac8cb0

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/3090460/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (GUARD_CF)	high

Reviews

ID	Capabilities	Evidence
AUTH_API	Manipulates User Authorization	advapi32.dll::CopySid advapi32.dll::GetLengthSid advapi32.dll::IsValidSid
COM_BASE_API	Can Download & Execute components	ole32.dll::CoCreateInstance ole32.dll::CoInitializeSecurity
SECURITY_BASE_API	Uses Security Base API	advapi32.dll::AdjustTokenPrivileges advapi32.dll::GetTokenInformation
SS_API	Uses SS API	secur32.dll::AcceptSecurityContext secur32.dll::AcquireCredentialsHandleA secur32.dll::ApplyControlToken secur32.dll::DecryptMessage secur32.dll::DeleteSecurityContext secur32.dll::QueryContextAttributesW
WIN32_PROCESS_API	Can Create Process and Threads	kernel32.dll::CreateProcessW kernel32.dll::OpenProcess advapi32.dll::OpenProcessToken kernel32.dll::CloseHandle kernel32.dll::CreateThread
WIN_BASE_API	Uses Win Base API	kernel32.dll::TerminateProcess ntdll.dll::NtQueryInformationProcess ntdll.dll::NtQuerySystemInformation kernel32.dll::LoadLibraryA kernel32.dll::LoadLibraryExW kernel32.dll::GetDriveTypeW
WIN_BASE_EXEC_API	Can Execute other programs	kernel32.dll::WriteConsoleA kernel32.dll::WriteConsoleW kernel32.dll::GetConsoleScreenBufferInfo kernel32.dll::GetConsoleMode
WIN_BASE_IO_API	Can Create Files	kernel32.dll::CreateDirectoryW ntdll.dll::NtCreateFile kernel32.dll::CreateFileW ntdll.dll::NtDeviceIoControlFile kernel32.dll::GetWindowsDirectoryW kernel32.dll::GetSystemDirectoryW
WIN_BASE_USER_API	Retrieves Account Information	advapi32.dll::LookupAccountSidW advapi32.dll::LookupPrivilegeValueA
WIN_BCRYPT_API	Can Encrypt Files	bcrypt.dll::BCryptGenRandom
WIN_CRYPT_API	Uses Windows Crypt API	crypt32.dll::CertAddCertificateContextToStore crypt32.dll::CertDuplicateCertificateChain crypt32.dll::CertDuplicateCertificateContext crypt32.dll::CertDuplicateStore crypt32.dll::CertEnumCertificatesInStore crypt32.dll::CertFreeCertificateChain
WIN_REG_API	Can Manipulate Windows Registry	advapi32.dll::RegOpenKeyExW advapi32.dll::RegQueryValueExW advapi32.dll::RegSetValueExW
WIN_SOCK_API	Uses Network to send and receive data	ws2_32.dll::bind ws2_32.dll::closesocket ws2_32.dll::connect ws2_32.dll::freeaddrinfo ws2_32.dll::getaddrinfo ws2_32.dll::getpeername
WIN_USER_API	Performs GUI Actions	user32.dll::FindWindowA

Comments

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zbet commented on 2024-08-05 12:35:40 UTC

url : hxxp://172.86.76.134:1111/svhost/