MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 09ffc4188bf11bf059b616491fcb8a09a474901581f46ec7f2c350fbda4e1e1c. 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: 12


Intelligence 12 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 09ffc4188bf11bf059b616491fcb8a09a474901581f46ec7f2c350fbda4e1e1c
SHA3-384 hash: d48a6d5d1841dc7012cb5b57617b6eb53a6a4043c2276af7cae670dab990860038e3a184af241a192bdfd0b4019bfe59
SHA1 hash: 8edb7b339d957a4a1f1070a082ee8b06353e4df0
MD5 hash: 1d8d71b4a0870c0dfa3468470fb28a28
humanhash: robin-uniform-michigan-aspen
File name:MenuEx.dll
Download: download sample
Signature RustyStealer
Create hunting rule
File size:718'848 bytes
First seen:2024-04-15 17:01:33 UTC
Last seen:Never
File type:DLL dll
MIME type:application/x-dosexec
imphash 1144e101bc055d8feceee72500aa884d (1 x RustyStealer)
ssdeep 12288:zjsoDasPcFtjnHoFsR/raVRjleiUt/tFsui3Abg3qomitjWep4xr0M1:XXasPcFtjnHoFsRrYRbUt/tFsrh3qo56
TLSH T1ECE4CF61B58084B1FDEA223DDEAC555586AC9C301B68B9CBE3C43AF93C705C2FB35295
TrID 73.2% (.OCX) Windows ActiveX control (116521/4/18)
10.3% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
6.6% (.EXE) Win64 Executable (generic) (10523/12/4)
3.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
2.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Reporter Brad_malware
Tags:dll RustyStealer

Intelligence

File Origin
# of uploads :
1
# of downloads :
400
Origin country :
US US
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Сreating synchronization primitives
Searching for the window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
danabot fingerprint latrodectus lolbin packed shell32
Link:
https://www.filescan.io/uploads/661d5d8b14ba3ce82894c0dc/reports/f705d70d-062a-4c6b-aadd-3169d063a9d5/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/09ffc4188bf11bf059b616491fcb8a09a474901581f46ec7f2c350fbda4e1e1c
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.
Malware family:
Malicious Packer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2953e6c5-4fba-4300-85d3-76810cac22b4
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1426245
Signature
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
PE file has a writeable .text section
Sigma detected: Potentially Suspicious Child Process Of Regsvr32
Sigma detected: Schedule REGSVR windows binary
Sigma detected: Schedule system process
System process connects to network (likely due to code injection or exploit)
Uses schtasks.exe or at.exe to add and modify task schedules
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1426245 Sample: MenuEx.dll Startdate: 15/04/2024 Architecture: WINDOWS Score: 88 33 t.me 2->33 35 api.ipify.org 2->35 43 Sigma detected: Schedule REGSVR windows binary 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 Sigma detected: Schedule system process 2->47 49 3 other signatures 2->49 9 loaddll32.exe 1 2->9         started        11 regsvr32.exe 2->11         started        signatures3 process4 process5 13 regsvr32.exe 1 9->13         started        17 cmd.exe 1 9->17         started        19 rundll32.exe 9->19         started        23 3 other processes 9->23 21 regsvr32.exe 11->21         started        dnsIp6 37 85.239.53.219, 49737, 49739, 49742 RAINBOW-HKRainbownetworklimitedHK Russian Federation 13->37 39 t.me 149.154.167.99, 443, 49733, 49738 TELEGRAMRU United Kingdom 13->39 41 api.ipify.org 172.67.74.152, 443, 49747 CLOUDFLARENETUS United States 13->41 51 System process connects to network (likely due to code injection or exploit) 13->51 53 Uses schtasks.exe or at.exe to add and modify task schedules 13->53 25 schtasks.exe 1 13->25         started        27 rundll32.exe 17->27         started        29 WerFault.exe 22 16 19->29         started        signatures7 process8 process9 31 conhost.exe 25->31         started       
Score:
55%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/09ffc4188bf11bf059b616491fcb8a09a474901581f46ec7f2c350fbda4e1e1c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/09ffc4188bf11bf059b616491fcb8a09a474901581f46ec7f2c350fbda4e1e1c/
Threat name:
Win32.Trojan.RustyStealer
Create hunting rule
Status:
Malicious
First seen:
2024-04-11 20:50:28 UTC
File Type:
PE (Dll)
Extracted files:
13
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=bh74igel6en7awnwczer7s4kbgshjeavqh2g5r7synipxwsodyoa._file
Verdict:
malicious
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://tria.ge/reports/240415-vj4kpsbd75/
Behaviour
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Program crash
Looks up external IP address via web service
Unpacked files
SH256 hash:
09ffc4188bf11bf059b616491fcb8a09a474901581f46ec7f2c350fbda4e1e1c
MD5 hash:
1d8d71b4a0870c0dfa3468470fb28a28
SHA1 hash:
8edb7b339d957a4a1f1070a082ee8b06353e4df0
Link:
https://www.unpac.me/results/e79437cf-e59f-4f55-ac5a-0ef1fac39d3d/
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/09ffc4188bf11bf059b616491fcb8a09a474901581f46ec7f2c350fbda4e1e1c

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
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

File information

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

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::RevertToSelf
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
ole32.dll::CreateStreamOnHGlobal
GDI_PLUS_APIInterfaces with Graphicsgdiplus.dll::GdiplusStartup
gdiplus.dll::GdiplusShutdown
gdiplus.dll::GdipDeleteGraphics
gdiplus.dll::GdipAlloc
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::ImpersonateSelf
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetDriveTypeW
KERNEL32.dll::GetSystemInfo
KERNEL32.dll::GetStartupInfoW
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileW
ntdll.dll::NtCreateFile
KERNEL32.dll::DeleteFileW
KERNEL32.dll::GetSystemDirectoryW
KERNEL32.dll::GetFileAttributesW
KERNEL32.dll::FindFirstFileW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryInfoKeyW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::FindWindowW

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