MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 199131c0a73a31df0955bb1f3d16d55aa3676e2a96b5acab01f0abb934ef560f. 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: 8


Intelligence 8 IOCs YARA 5 File information Comments

SHA256 hash: 199131c0a73a31df0955bb1f3d16d55aa3676e2a96b5acab01f0abb934ef560f
SHA3-384 hash: cc7437f025ae5f8396892ee1d001d619bc0fda0147700170ecf35a9b7caea96b421ca9e36b0e8c084c35f8e2f197bbf4
SHA1 hash: 28ce0e6bf5b1dca428b70f54f1370213f3edb9ca
MD5 hash: 8cd0b09ebac2ceb2a2119e65624e2233
humanhash: artist-helium-one-idaho
File name:installer64v9.5.7.msi
Download: download sample
Signature ValleyRAT
File size:8'622'080 bytes
First seen:2024-12-30 06:44:47 UTC
Last seen:Never
File type:Microsoft Software Installer (MSI) msi
MIME type:application/x-msi
ssdeep 196608:hE+lNjfGAnfAvC5f5g9rk6/UfbP2ZF5vw:hffXfTyBk6/UCH
TLSH T15496013A19B7B0BCF643D6B586768B67A83237E067265CBF00B5E3701631B014B85B76
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 :
107
Origin country :
US US
Vendor Threat Intelligence
Verdict:
Malicious
Score:
81.4%
Tags:
obfuscated virus blic
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
fingerprint installer obfuscated packed packed xor-url
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.
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
52 / 100
Signature
Hides threads from debuggers
PE file contains section with special chars
Query firmware table information (likely to detect VMs)
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1582262 Sample: installer64v9.5.7.msi Startdate: 30/12/2024 Architecture: WINDOWS Score: 52 19 PE file contains section with special chars 2->19 6 msiexec.exe 75 29 2->6         started        9 msiexec.exe 5 2->9         started        process3 file4 15 C:\Windows\Installer\MSI81E9.tmp, PE32+ 6->15 dropped 11 msiexec.exe 1 6->11         started        process5 file6 17 C:\Program Files (x86)\Windows NT\hrsv.tac, PE32+ 11->17 dropped 21 Query firmware table information (likely to detect VMs) 11->21 23 Hides threads from debuggers 11->23 signatures7
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
Suspicious use of NtSetInformationThreadHideFromDebugger
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:DebuggerCheck__API
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:RansomPyShield_Antiransomware
Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
Rule name:SUSP_XORed_MSDOS_Stub_Message
Author:Florian Roth
Description:Detects suspicious XORed MSDOS stub message
Reference:https://yara.readthedocs.io/en/latest/writingrules.html#xor-strings
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