MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4f46f859e6b967ae6f0dd73750e5ecbc170f837b7f5a02953aab178a557c598a. 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 2 File information Comments

SHA256 hash: 4f46f859e6b967ae6f0dd73750e5ecbc170f837b7f5a02953aab178a557c598a
SHA3-384 hash: 06fed90c418fe5d31903c3536210ca8f15f611d412870284de195292b82c4013af5f83cf7445771abb0b63a917b97d1e
SHA1 hash: fe74f22e7abec2c9c76af03926e813f535450042
MD5 hash: d54617a3ec9a8b748f49ab25624b8ed0
humanhash: emma-island-gee-winner
File name:installer64v9.2.4.msi
Download: download sample
Signature ValleyRAT
File size:11'567'104 bytes
First seen:2025-01-03 08:19:55 UTC
Last seen:Never
File type:Microsoft Software Installer (MSI) msi
MIME type:application/x-msi
ssdeep 196608:3vF8TzmQ/SBEbCgtmfwe2lwhUSEVM7EBbekSCzp/FT8dMNmwLn6F93w:fF8Xm6xbEIvwhTEHJvhYMNmw7N
TLSH T170C63313B53FE952E8EE33741C316A14D8446E422370846DA7287BDDA4BA77047BB2E7
TrID 53.7% (.MST) Windows SDK Setup Transform script (61000/1/5)
39.2% (.MSP) Windows Installer Patch (44509/10/5)
7.0% (.) Generic OLE2 / Multistream Compound (8000/1)
Magika msi
Reporter kafan_shengui
Tags:msi SilverFox ValleyRAT winos

Intelligence


File Origin
# of uploads :
1
# of downloads :
98
Origin country :
US US
Vendor Threat Intelligence
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer packed packed
Result
Threat name:
n/a
Detection:
malicious
Classification:
n/a
Score:
52 / 100
Signature
Multi AV Scanner detection for dropped file
PE file has nameless sections
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1583656 Sample: installer64v9.2.4.msi Startdate: 03/01/2025 Architecture: WINDOWS Score: 52 15 Multi AV Scanner detection for dropped file 2->15 17 PE file has nameless sections 2->17 6 msiexec.exe 75 29 2->6         started        9 msiexec.exe 5 2->9         started        process3 file4 13 C:\Windows\Installer\MSI33B8.tmp, PE32+ 6->13 dropped 11 msiexec.exe 1 6->11         started        process5
Result
Malware family:
n/a
Score:
  6/10
Tags:
persistence privilege_escalation
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
Enumerates connected drives
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Please note that we are no longer able to provide a coverage score for Virus Total.

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:RansomPyShield_Antiransomware
Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
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