MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 9b99747d1b73fbca15dbc14f2cd30f2d6fc12362ba78f271d30c2b5351945c2b. 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: 11
| SHA256 hash: | 9b99747d1b73fbca15dbc14f2cd30f2d6fc12362ba78f271d30c2b5351945c2b |
|---|---|
| SHA3-384 hash: | 842825735d000028b8540184ed72c85c9bd8f460ccdaf07596346c9a6eff5d5540c201d8c9f9dd16945e2e865ff59dac |
| SHA1 hash: | 21faeb441a4f2d6c0cc9b6ede4328f8c208a13fe |
| MD5 hash: | 9dfbd1259c507519b9b166b6f5ff4202 |
| humanhash: | gee-nitrogen-pennsylvania-beryllium |
| File name: | SOSTENER.vbs |
| Download: | download sample |
| File size: | 24'297 bytes |
| First seen: | 2026-04-14 06:54:58 UTC |
| Last seen: | Never |
| File type: |  vbs |
| MIME type: | text/plain |
| ssdeep | 384:K/8Zi6d5fWFP4QirJ7GC6lgl2mBrblV8hW8ckYqgD+zFJp302J8Xx8RQMKACEVv/:K/8ZipvirJ7Go/rR/+gD6qca4KyvbPr |
| TLSH | T10DB21E3EC984DFF00B6B31E1A95F7A16A5540363B9382A4DB9CF809D3B35650CBB01E9 |
| Magika | vba |
| Reporter |  abuse_ch |
| Tags: | vbs |
Intelligence
File Origin
# of uploads :
1
# of downloads :
42
Origin country :
SEVendor Threat Intelligence
No detections
Detection:
n/a
Detection(s):
Verdict:
Malicious
Score:
99.1%
Tags:
obfuscate dropper xtreme
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
base64 base64 encrypted evasive guloader obfuscated obfuscated powershell powershell
Verdict:
Malicious
Labled as:
GT:VB.ObfDldr.31
Verdict:
Malicious
File Type:
vbs
First seen:
2026-04-13T19:48:00Z UTC
Last seen:
2026-04-15T23:51:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan-Downloader.Script.Generic PDM:Trojan.Win32.Generic Trojan.JS.SAgent.sb Trojan-Downloader.PowerShell.NanoShield.sb HEUR:Trojan.Script.Generic
Result
Threat name:
RDPWrap Tool
Detection:
malicious
Classification:
spre.troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains process injector
.NET source code contains very large strings
.NET source code references suspicious native API functions
Contains functionality to capture screen (.Net source)
Contains functionality to hide user accounts
Contains functionality to log keystrokes (.Net Source)
Contains functionality to register a low level keyboard hook
Injects a PE file into a foreign processes
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Net WebClient Casing Anomalies
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: PowerShell Base64 Encoded IEX Cmdlet
Sigma detected: Silenttrinity Stager Msbuild Activity
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Uses dynamic DNS services
VBScript performs obfuscated calls to suspicious functions
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
WScript reads language and country specific registry keys (likely country aware script)
Wscript starts Powershell (via cmd or directly)
Yara detected AntiVM3
Yara detected Powershell decode and execute
Yara detected Powershell download and execute
Yara detected RDPWrap Tool
Behaviour
Behavior Graph:
Score:
71%
Verdict:
Malware
File Type:
SCRIPT
Gathering data
Verdict:
Malicious
Threat:
Trojan-Downloader.PowerShell.NanoShield
Threat name:
Script-WScript.Trojan.Heuristic
Status:
Malicious
First seen:
2026-04-14 01:01:09 UTC
AV detection:
6 of 37 (16.22%)
Threat level:
2/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
8/10
Tags:
discovery execution
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Command and Scripting Interpreter: PowerShell
Looks up external IP address via web service
Checks computer location settings
Badlisted process makes network request
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | detect_tiny_vbs |
|---|---|
| Author: | daniyyell |
| Description: | Detects tiny VBS delivery technique |
| Rule name: | Sus_CMD_Powershell_Usage |
|---|---|
| Author: | XiAnzheng |
| Description: | May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP) |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
vbs 9b99747d1b73fbca15dbc14f2cd30f2d6fc12362ba78f271d30c2b5351945c2b
(this sample)
Delivery method
Distributed via web download
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