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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4bb5874756ee936ddbb02d110a4ff1c273496caaa43531e353a0cadaf4c7fabd. 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


Threat unknown


Vendor detections: 6


Intelligence 6 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4bb5874756ee936ddbb02d110a4ff1c273496caaa43531e353a0cadaf4c7fabd
SHA3-384 hash: da8761d8abe66580e9ff831cc744bd3eeb7d5313ce023a7203d5d56f9bc8ac825d54e732e6904f7b5f4fb195a971cc80
SHA1 hash: 2e2027a3df4fd30e26c1223b2abf36b61daa09e9
MD5 hash: 6b735c768cd00f238b11f13fa8131064
humanhash: leopard-carolina-salami-nebraska
File name:rvtools4.8.1.msi
Download: download sample
File size:10'654'208 bytes
First seen:2026-07-29 16:28:44 UTC
Last seen:Never
File type:Microsoft Software Installer (MSI) msi
MIME type:application/x-msi
ssdeep 196608:JJ0J36ikBL3FccXm2Hnzesf/2HB7wM+2EQ6LzT/X:1Vljnzesf/Q7wQOLzT/X
TLSH T18EB623D7EBA149E4D1A35C38127E6607D234380D8218997BF3DD5A913F36798A8F8B1C
TrID 85.3% (.MST) Windows SDK Setup Transform script (61000/1/5)
11.1% (.) Generic OLE2 / Multistream Compound (8000/1)
3.5% (.ASSETS) Unity binary serialized Assets (generic) (2509/3/1)
Magika ppt
Reporter paulovolvo
Tags:msi PythonRAT RvTools smokedham


Avatar
paulovolvo
RVTools Masquerade: How a Signed Fake Installer Deploys a Modular Python RAT
https://labs.k7computing.com/index.php/rvtools-masquerade-how-a-signed-fake-installer-deploys-a-modular-python-rat/

SmokedHam appears to be a modified, lightweight version of the open-source RAT known as
ThunderShell
https://research.cert.orangecyberdefense.com/smokedham/smoking_out_an_affiliate.pdf

Intelligence

File Origin
# of uploads :
1
# of downloads :
88
Origin country :
FR FR
Vendor Threat Intelligence
Malware configuration found for:
MSI MSO
Details
Link:
https://research.acce.ciphertechsolutions.com/results/92d99543-820c-4a21-a8f6-d0b9d1a9d7e4/
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/76727/
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
anti-debug overlay wix
Link:
https://www.filescan.io/uploads/6a6a2a6781a0e65d097a77a5/reports/a2c572d0-9d57-4b6c-803c-e489a3289f08/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/4bb5874756ee936ddbb02d110a4ff1c273496caaa43531e353a0cadaf4c7fabd
Verdict:
Clean
File Type:
msi
Link:
https://opentip.kaspersky.com/4bb5874756ee936ddbb02d110a4ff1c273496caaa43531e353a0cadaf4c7fabd/results?tab=lookup
Score:
97%
Verdict:
Malware
File Type:
ARCHIVE
Link:
https://malprob.io/report/4bb5874756ee936ddbb02d110a4ff1c273496caaa43531e353a0cadaf4c7fabd
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4bb5874756ee936ddbb02d110a4ff1c273496caaa43531e353a0cadaf4c7fabd/
Threat name:
Win64.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-07-27 16:49:11 UTC
File Type:
Binary (Archive)
Extracted files:
405
AV detection:
4 of 24 (16.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jo2yor2w52jw3w5qfuiqut7ryjzus3fkuq2tdy2tudfnv5gh7k6q._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery persistence privilege_escalation ransomware
Link:
https://tria.ge/reports/260729-tzfcdazxbt/
Behaviour
Checks SCSI registry key(s)
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
Event Triggered Execution: Installer Packages
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Enumerates connected drives
Executes dropped EXE
Loads dropped DLL
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/4bb5874756ee936ddbb02d110a4ff1c273496caaa43531e353a0cadaf4c7fabd

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:telebot_framework
Create hunting rule
Author:vietdx.mb
Rule name:test_Malaysia
Create hunting rule
Author:rectifyq
Description:Detects file containing malaysia string

File information

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

Web download

Microsoft Software Installer (MSI) msi 4bb5874756ee936ddbb02d110a4ff1c273496caaa43531e353a0cadaf4c7fabd

(this sample)

  
Link
https://www.virustotal.com/gui/file/4bb5874756ee936ddbb02d110a4ff1c273496caaa43531e353a0cadaf4c7fabd
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/76727/
  
URLhaus
https://urlhaus.abuse.ch/url/3893938/

Comments