MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a2e678bb376d2dcec5b7d0abac428c87cd8ae75936e28c03cb4232ae97015131. 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: 10

Intelligence 10 IOCs YARA 5 File information Comments 1

SHA256 hash:	a2e678bb376d2dcec5b7d0abac428c87cd8ae75936e28c03cb4232ae97015131
SHA3-384 hash:	0d18722ee50e5149f9267e9f2b8590ed54699efb3946112a8487d4d13113e29cccdef0aa342933cfb04cf55d590f2ced
SHA1 hash:	6c7947428231ab857ee8c9dab7a7e62fdeed024b
MD5 hash:	5347852b24409aed42423f0118637f03
humanhash:	emma-vermont-ohio-twenty
File name:	5347852b24409aed42423f0118637f03
Download:	download sample
Signature	RustyStealer Create hunting rule
File size:	2'821'632 bytes
First seen:	2024-04-08 04:55:32 UTC
Last seen:	2024-04-08 05:16:19 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	73a614cb0128995985b28c4e23869315 (1 x RustyStealer)
ssdeep	49152:UAzgjdYG43A0ExPRq88tyqTtrQ5z9jzPi7mv9aM/id8T:UAuUkthD/id8
TLSH	T1D0D52A11BB4E99ADC15AC4B0C2478B626A7170CE0B35BAFF45C486353E69AF51F3C398
TrID	44.4% (.EXE) Win64 Executable (generic) (10523/12/4) 21.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 8.7% (.ICL) Windows Icons Library (generic) (2059/9) 8.5% (.EXE) OS/2 Executable (generic) (2029/13) 8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter	zbetcheckin
Tags:	64 exe RustyStealer

Intelligence

File Origin

# of uploads :

# of downloads :

297

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

a2e678bb376d2dcec5b7d0abac428c87cd8ae75936e28c03cb4232ae97015131.exe

Verdict:

Malicious activity

Analysis date:

2024-04-08 04:56:14 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/08a6b326-88ea-4fed-a085-03cad30ee0ac

Note:

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

Result

Verdict:

Clean

Maliciousness:

Behaviour

Searching for the window

DNS request

Connection attempt

Sending a custom TCP request

Launching the default Windows debugger (dwwin.exe)

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

anti-debug

Link:

https://www.filescan.io/uploads/661378e335699b4745c09a2d/reports/a41248ad-d2e6-47c4-9c95-2427d6d5f592/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/a2e678bb376d2dcec5b7d0abac428c87cd8ae75936e28c03cb4232ae97015131

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:

Suspicious

Link:

https://analyze.intezer.com/analyses/a475d508-5eb7-4347-9cde-61c10a6debd3

Result

Threat name:

n/a

Detection:

malicious

Classification:

n/a

Score:

72 / 100

Link:

https://www.joesandbox.com/analysis/1422000

Signature

Antivirus detection for URL or domain

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for submitted file

Behaviour

Behavior Graph:

Download SVG

Score:

Verdict:

Benign

File Type:

Link:

https://malprob.io/report/a2e678bb376d2dcec5b7d0abac428c87cd8ae75936e28c03cb4232ae97015131

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a2e678bb376d2dcec5b7d0abac428c87cd8ae75936e28c03cb4232ae97015131/

Threat name:

Win64.Spyware.Rustystealer

Status:

Malicious

First seen:

2024-04-05 02:05:48 UTC

File Type:

PE+ (Exe)

AV detection:

19 of 24 (79.17%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ulthrozxnuw45rnx2cv2yqumq7gyvz2zg3riya6liizk5fybkeyq._file

Verdict:

malicious

Result

Malware family:

n/a

Score:

3/10

Tags:

n/a

Link:

https://tria.ge/reports/240408-fkn43shb95/

Unpacked files

SH256 hash:

a2e678bb376d2dcec5b7d0abac428c87cd8ae75936e28c03cb4232ae97015131

MD5 hash:

5347852b24409aed42423f0118637f03

SHA1 hash:

6c7947428231ab857ee8c9dab7a7e62fdeed024b

Link:

https://www.unpac.me/results/70f05db2-3759-4f64-9360-7b156905a30c/

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/a2e678bb376d2dcec5b7d0abac428c87cd8ae75936e28c03cb4232ae97015131

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:	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 a2e678bb376d2dcec5b7d0abac428c87cd8ae75936e28c03cb4232ae97015131

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2804606/

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 (FORCE_INTEGRITY)	high

Reviews

ID	Capabilities	Evidence
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::WriteProcessMemory kernel32.dll::CloseHandle kernel32.dll::CreateThread ntdll.dll::NtCreateThreadEx
WIN_BASE_API	Uses Win Base API	kernel32.dll::LoadLibraryA kernel32.dll::GetSystemInfo
WIN_BASE_EXEC_API	Can Execute other programs	kernel32.dll::WriteConsoleW kernel32.dll::GetConsoleMode
WIN_BASE_IO_API	Can Create Files	ntdll.dll::NtCreateFile ntdll.dll::NtDeviceIoControlFile kernel32.dll::FindFirstFileW
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
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

Comments

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zbet commented on 2024-04-08 04:55:33 UTC

url : hxxp://88.218.61.219/test2.exe