MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1b4fa00527dd18885bff1d2fadc8deae448fa8939b2880a23d397d474295d8f9. 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


ValleyRAT


Vendor detections: 7


Intelligence 7 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1b4fa00527dd18885bff1d2fadc8deae448fa8939b2880a23d397d474295d8f9
SHA3-384 hash: 78ca8bffc741598213719ce7fe162e57634e0c5a2cecbd3dd007262a70dc8cffa802e52accee7f0e3099d78c2d0092b5
SHA1 hash: db4f52952ae7d706a996bc866409b105fe580a08
MD5 hash: 30200c7f84dac370e4f891c00bd4cdd3
humanhash: nine-march-idaho-six
File name:yzwnoob.msi
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:13'881'344 bytes
First seen:2024-12-28 07:53:09 UTC
Last seen:Never
File type:Microsoft Software Installer (MSI) msi
MIME type:application/x-msi
ssdeep 196608:fO5N5lunV72ksRJgbxCwxvQac1dZC+wSw5PZbzL+uuIZYsk5Z02SJ4AAHFnOFJin:kWCksVySw5PZXiuuI6FP5TtHhzQATz
TLSH T1B7E633187B5F6B5EC34581BD88C5BAAE09D06E640B64B2E03340BF6DF17B837D1629D2
TrID 88.4% (.MST) Windows SDK Setup Transform script (61000/1/5)
11.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Magika msi
Reporter zhuzhu0009
Tags:backdoor msi SilverFox ValleyRAT winos

Intelligence

File Origin
# of uploads :
1
# of downloads :
95
Origin country :
PL PL
Vendor Threat Intelligence
Verdict:
Clean
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=676fae9d75fb913a1478dc75
Tags:
malware
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer packed packed
Link:
https://www.filescan.io/uploads/676fae9bd986a2005f8d93de/reports/5253fc11-e391-4ea9-ae4b-9324b8c764c6/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/1b4fa00527dd18885bff1d2fadc8deae448fa8939b2880a23d397d474295d8f9
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/1b4fa00527dd18885bff1d2fadc8deae448fa8939b2880a23d397d474295d8f9
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1581564
Signature
Hides threads from debuggers
Multi AV Scanner detection for dropped file
PE file has nameless sections
Query firmware table information (likely to detect VMs)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1581564 Sample: yzwnoob.msi Startdate: 28/12/2024 Architecture: WINDOWS Score: 60 19 Multi AV Scanner detection for dropped file 2->19 21 PE file has nameless sections 2->21 6 msiexec.exe 75 29 2->6         started        9 msiexec.exe 5 2->9         started        process3 file4 15 C:\Windows\Installer\MSI70D4.tmp, PE32+ 6->15 dropped 11 msiexec.exe 2 6->11         started        process5 file6 17 C:\Program Files (x86)\Windows NT\hrsv.tac, PE32+ 11->17 dropped 23 Query firmware table information (likely to detect VMs) 11->23 25 Hides threads from debuggers 11->25 signatures7
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1b4fa00527dd18885bff1d2fadc8deae448fa8939b2880a23d397d474295d8f9/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dnh2abjh3umiqw77dux23sg6vzci7kettmuibir5hf6uoquv3d4q._file
Result
Malware family:
n/a
Score:
  6/10
Tags:
persistence privilege_escalation
Link:
https://tria.ge/reports/241228-jrjdyswqdx/
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 WriteProcessMemory
Uses Volume Shadow Copy service COM API
Event Triggered Execution: Installer Packages
Drops file in Program Files directory
Drops file in Windows directory
Loads dropped DLL
Suspicious use of NtSetInformationThreadHideFromDebugger
Enumerates connected drives
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/5e1d0315-9998-4fee-83bc-19bd7871281a
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/1b4fa00527dd18885bff1d2fadc8deae448fa8939b2880a23d397d474295d8f9

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:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Comments