MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a799052d8068f5f2ecfefee27c690abb3f3de90bbd98e5b0a4459f0827b3fec2. 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: 8

Intelligence 8 IOCs YARA 16 File information Comments

SHA256 hash:	a799052d8068f5f2ecfefee27c690abb3f3de90bbd98e5b0a4459f0827b3fec2
SHA3-384 hash:	e64e85138e9f7a2970e9651da3b85048693c9f1537ff7d661a6d576ad49681305414a0e729c29113bbc8015082bb6095
SHA1 hash:	8b7e39918834826b0497243862b40671444fe939
MD5 hash:	f299098a2f6fbaa7902f87344c965525
humanhash:	wolfram-oxygen-mockingbird-thirteen
File name:	runtime.exe
Download:	download sample
Signature	RustyStealer Create hunting rule
File size:	4'795'392 bytes
First seen:	2024-10-25 07:10:03 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	e1e3fcb58e3e7419c5648677137ed0c0 (1 x RustyStealer)
ssdeep	49152:bDUiB9OEnnxl+BGB5Ii30epccgxTkUv8X7W4jNzIddFLdsa06S/QT/Dc+lv9SFPp:XUSlKLdv8sV8kFF4FP
TLSH	T180266B127B9949ADC05AC074C2878763AA7274CA0B31BBEF458492783F66EF52F3D354
TrID	47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10522/11/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika	pebin
Reporter	Exteron01
Tags:	antivm exe RustyStealer

Intelligence

File Origin

# of uploads :

# of downloads :

415

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

runtime.exe

Verdict:

Malicious activity

Analysis date:

2024-10-25 07:12:51 UTC

Tags:

discord stealer

Link:

https://app.any.run/tasks/2dde8807-0245-45a5-bcbc-f8f09bb523da

Note:

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

Verdict:

Malicious

Score:

93.3%

Link:

https://cyber-fortress.com/docs/result/index.php?id=671b44876eb034bac8ba0a3d

Tags:

Vmdetect

Result

Verdict:

Clean

Maliciousness:

Behaviour

Сreating synchronization primitives

Creating a file

DNS request

Connection attempt

Sending a custom TCP request

Creating a window

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/a799052d8068f5f2ecfefee27c690abb3f3de90bbd98e5b0a4459f0827b3fec2

Verdict:

Suspicious

Link:

https://analyze.intezer.com/analyses/36d3e6b0-d36d-4f6c-80d7-0d6f77d8e81c

Result

Threat name:

n/a

Detection:

malicious

Classification:

spyw.evad

Score:

64 / 100

Link:

https://www.joesandbox.com/analysis/1541872

Signature

AI detected suspicious sample

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Tries to harvest and steal browser information (history, passwords, etc)

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/a799052d8068f5f2ecfefee27c690abb3f3de90bbd98e5b0a4459f0827b3fec2

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a799052d8068f5f2ecfefee27c690abb3f3de90bbd98e5b0a4459f0827b3fec2/

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=u6mqklmand27f3h673rhy2ikxm7t32ilxwmolmfeiwpqqj5t73ba._file

Result

Malware family:

n/a

Score:

7/10

Tags:

spyware stealer

Link:

https://tria.ge/reports/241025-hzekaswerh/

Behaviour

Suspicious behavior: EnumeratesProcesses

Legitimate hosting services abused for malware hosting/C2

Reads user/profile data of web browsers

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/bee9023d-fd86-44a3-974a-367178a871fa

Unpacked files

SH256 hash:

a799052d8068f5f2ecfefee27c690abb3f3de90bbd98e5b0a4459f0827b3fec2

MD5 hash:

f299098a2f6fbaa7902f87344c965525

SHA1 hash:

8b7e39918834826b0497243862b40671444fe939

Link:

https://www.unpac.me/results/3c0d2104-e371-49ee-ac18-503f9d117951/

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/a799052d8068f5f2ecfefee27c690abb3f3de90bbd98e5b0a4459f0827b3fec2

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:	Check_OutputDebugStringA_iat Create hunting rule

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:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

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

Rule name:	SUSP_OneNote Create hunting rule
Author:	spatronn
Description:	Hard-Detect One

Rule name:	vmdetect Create hunting rule
Author:	nex
Description:	Possibly employs anti-virtualization techniques

File information

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

Web download

RustyStealer

exe a799052d8068f5f2ecfefee27c690abb3f3de90bbd98e5b0a4459f0827b3fec2

(this sample)

Link

https://tria.ge/241025-gjk7gavfph/behavioral2

Dropped by

infected videogame cheats

Delivery method

Distributed via web download

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
DP_API	Uses DP API	crypt32.dll::CryptUnprotectData
SECURITY_BASE_API	Uses Security Base API	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::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::LoadLibraryExA KERNEL32.dll::LoadLibraryW KERNEL32.dll::LoadLibraryA
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleW KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CopyFileExW KERNEL32.dll::CreateFileW KERNEL32.dll::CreateFileMappingW KERNEL32.dll::CreateFileA ntdll.dll::NtCreateFile KERNEL32.dll::DeleteFileW KERNEL32.dll::DeleteFileA
WIN_BASE_USER_API	Retrieves Account Information	advapi32.dll::GetUserNameW
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

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