MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2b18b1aa768ad59bee0b615399777edaae15f3834e62dd27dcd159d7a8604526. 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: 11


Intelligence 11 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2b18b1aa768ad59bee0b615399777edaae15f3834e62dd27dcd159d7a8604526
SHA3-384 hash: d9f350dece14ac448ea9aad85388d6944417e6b42a8e4b60f85e2ae816259d70e3c25195894f3f6fc1cd4c3f2877006c
SHA1 hash: 22373fda48d0a93c4c1f0e58354a63377774e529
MD5 hash: bbbc4b56d96a032cb1890a462f4af119
humanhash: nevada-nitrogen-butter-cola
File name:letsvpn.msi
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:20'948'480 bytes
First seen:2025-05-31 20:25:08 UTC
Last seen:Never
File type:Microsoft Software Installer (MSI) msi
MIME type:application/x-msi
ssdeep 393216:pyt2Y9zSt8kmFMhpppPi7P26RzIcdwQuiQDlwg0S+B7PnnzmqyjsVY:wTSSXMBpgP2k0EwQul+dCqEsVY
Threatray 13 similar samples on MalwareBazaar
TLSH T18C271321759EC532FA5E05B19A29EA2AE43C7DF30B7404EBA3E4F95966304C25335F83
TrID 80.0% (.MSI) Microsoft Windows Installer (454500/1/170)
10.7% (.MST) Windows SDK Setup Transform script (61000/1/5)
7.8% (.MSP) Windows Installer Patch (44509/10/5)
1.4% (.) Generic OLE2 / Multistream Compound (8000/1)
Magika msi
Reporter aachum
Tags:donutloader msi ValleyRAT


Avatar
iamaachum
https://kuailianx.org/install/letsvpn.msi

Intelligence

File Origin
# of uploads :
1
# of downloads :
114
Origin country :
ES ES
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/6594/
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=683b699a668438e362e92971
Tags:
shellcode dropper virus
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug anti-vm base64 cmd evasive expired-cert fingerprint fingerprint keylogger lolbin msiexec packed remote short-lived-cert wix
Link:
https://www.filescan.io/uploads/683b66162d1d8b12425e1ec0/reports/8e2e9707-5e4d-4d1d-a4af-87e54f1605d3/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/2b18b1aa768ad59bee0b615399777edaae15f3834e62dd27dcd159d7a8604526
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/2b18b1aa768ad59bee0b615399777edaae15f3834e62dd27dcd159d7a8604526
Result
Threat name:
n/a
Detection:
malicious
Classification:
n/a
Score:
48 / 100
Link:
https://www.joesandbox.com/analysis/1703082
Signature
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
Score:
33%
Verdict:
Susipicious
File Type:
ARCHIVE
Link:
https://malprob.io/report/2b18b1aa768ad59bee0b615399777edaae15f3834e62dd27dcd159d7a8604526
Gathering data
Threat name:
Win32.Exploit.DonutMarte
Create hunting rule
Status:
Malicious
First seen:
2025-05-22 12:34:46 UTC
File Type:
Binary (Archive)
Extracted files:
849
AV detection:
12 of 24 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fmmldktwrlkzx3qlmfjzs5363kxbl44djzrn2j642fm5pkdaiuta._file
Verdict:
malicious
Label(s):
donut_injector
Create hunting rule
Similar samples:
0e71cb5a1c039483d63175a4f2200a6976ada786b6960e551bd4ef094950968e
ValleyRAT
11540a90f1dc6bad4ec1bfa3433253d0a89da35b1195a8284ac262af99046ccf
ValleyRAT
1d8a948214daf64f3b0b9b894ee8b18dbf9164e54238d8ef88f9372cd03ce3ce
ValleyRAT
683f0e829eeb0860f19ac325bb399d4bb4837d9c011ac018fee6118490a1666c
ValleyRAT
6a74f432fdf2bfca183781f976ced440014fc58bc7d516f3826017a500d3d4bc
ValleyRAT
73850107076eef72390e6b616735dea2e020acd1a21df71e8feb36a18f1811c3
ValleyRAT
8713571fe41bef1b874fa84ff037716cb840a5205c85a2af0a01ad7b4f397c1a
ValleyRAT
a4170fa0f47ab88e7ffa5529c9e4048f2a19e955ca16953e7a8b445d1e977a97
ValleyRAT
error
ValleyRAT
+ 3 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  6/10
Tags:
discovery persistence privilege_escalation
Link:
https://tria.ge/reports/250531-y8ejnaxvhv/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Event Triggered Execution: Installer Packages
System Location Discovery: System Language Discovery
Loads dropped DLL
Enumerates connected drives
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/6655ae70-f039-49b1-887e-330865e53947
Malware family:
ValleyRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2b18b1aa768a/report/overview.html
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
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Detect_LATAM_MSI_Banker
Create hunting rule
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_OLE_file_magic_number
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:suspicious_msi_file
Create hunting rule
Author:Johnk3r
Description:Detects common strings, DLL and API in Banker_BR
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.

Web download

ValleyRAT

Microsoft Software Installer (MSI) msi 2b18b1aa768ad59bee0b615399777edaae15f3834e62dd27dcd159d7a8604526

(this sample)

  
Link
https://tria.ge/250531-yadvgawyaz/behavioral1
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/6594/

Comments