MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ee1a3803936b0f51c8fa1e2ce1fcbfe092f0c2e846d5fd5bb075f3ad931efe6f. 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


RemcosRAT


Vendor detections: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ee1a3803936b0f51c8fa1e2ce1fcbfe092f0c2e846d5fd5bb075f3ad931efe6f
SHA3-384 hash: a229998490db812e821e51824ed37a032afbf98dd709df87d1a66f147a8f93dd40c24a5c48e4cf1150f348a9babb10b4
SHA1 hash: f87396e8a2de08aadafa2e52a44374e47da136a2
MD5 hash: 9e9eb734f646732644b96bb7d28b3998
humanhash: jersey-fanta-louisiana-may
File name:sostener.vbs
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:142'083 bytes
First seen:2025-06-10 05:21:01 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 1536:g8++qEzb/rgGpRrjDJkCkRFklYBtyo9hxUmleC3N:H++ngGpdDJkCkRFkCyEheXmN
TLSH T11DD396539A1622E10C33A6E6A81AD856E8F01963411BF11F7DCCBB701F313EF5DE466A
Magika vba
Reporter abuse_ch
Tags:RemcosRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
86
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/8173/
Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6847c1bb8bd5d68a12e74985
Tags:
obfuscate xtreme spawn
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/ee1a3803936b0f51c8fa1e2ce1fcbfe092f0c2e846d5fd5bb075f3ad931efe6f
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1710430
Signature
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Detected Remcos RAT
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Malicious Base64 Encoded PowerShell Keywords in Command Lines
Sigma detected: New RUN Key Pointing to Suspicious Folder
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: PowerShell Base64 Encoded Reflective Assembly Load
Sigma detected: Remcos
Sigma detected: Suspicious PowerShell Parameter Substring
Sigma detected: Windows Shell/Scripting Application File Write to Suspicious Folder
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 starts Powershell (via cmd or directly)
Yara detected Powershell decode and execute
Yara detected Powershell download and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1710430 Sample: sostener.vbs Startdate: 10/06/2025 Architecture: WINDOWS Score: 100 38 newremco.duckdns.org 2->38 40 d2rf50u1p3jcpj.cloudfront.net 2->40 42 3 other IPs or domains 2->42 52 Suricata IDS alerts for network traffic 2->52 54 Found malware configuration 2->54 56 Malicious sample detected (through community Yara rule) 2->56 60 16 other signatures 2->60 9 wscript.exe 1 2->9         started        12 svchost.exe 1 1 2->12         started        15 OpenWith.exe 19 5 2->15         started        17 OpenWith.exe 5 2->17         started        signatures3 58 Uses dynamic DNS services 38->58 process4 dnsIp5 78 VBScript performs obfuscated calls to suspicious functions 9->78 80 Suspicious powershell command line found 9->80 82 Wscript starts Powershell (via cmd or directly) 9->82 84 3 other signatures 9->84 19 powershell.exe 15 17 9->19         started        50 127.0.0.1 unknown unknown 12->50 signatures6 process7 dnsIp8 44 cdn.discordapp.com 162.159.130.233, 443, 49723 CLOUDFLARENETUS United States 19->44 46 d2rf50u1p3jcpj.cloudfront.net 18.245.124.60, 443, 49716 AMAZON-02US United States 19->46 62 Writes to foreign memory regions 19->62 64 Found suspicious powershell code related to unpacking or dynamic code loading 19->64 66 Injects a PE file into a foreign processes 19->66 23 MSBuild.exe 19->23         started        26 MSBuild.exe 4 19->26         started        29 cmd.exe 2 19->29         started        32 2 other processes 19->32 signatures9 process10 dnsIp11 68 Contains functionality to bypass UAC (CMSTPLUA) 23->68 70 Contains functionalty to change the wallpaper 23->70 72 Contains functionality to steal Chrome passwords or cookies 23->72 76 2 other signatures 23->76 48 newremco.duckdns.org 146.70.137.90, 3010 TENET-1ZA United Kingdom 26->48 74 Detected Remcos RAT 26->74 36 C:\Users\Public\Downloads\nonrubberized, data 29->36 dropped 34 conhost.exe 29->34         started        file12 signatures13 process14
Score:
44%
Verdict:
Susipicious
File Type:
SCRIPT
Link:
https://malprob.io/report/ee1a3803936b0f51c8fa1e2ce1fcbfe092f0c2e846d5fd5bb075f3ad931efe6f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ee1a3803936b0f51c8fa1e2ce1fcbfe092f0c2e846d5fd5bb075f3ad931efe6f/
Threat name:
Script.Trojan.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2025-06-09 23:03:42 UTC
File Type:
Text (VBS)
AV detection:
3 of 36 (8.33%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=5yndqa4tnmhvdsh2dywod7f74cjpbqxii3k72w5qoxz23ey67zxq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery execution persistence rat
Link:
https://tria.ge/reports/250610-f2d1fazsf1/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Remcos
Remcos family
Malware Config
C2 Extraction:
newremco.duckdns.org:3010
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/ee1a3803936b0f51c8fa1e2ce1fcbfe092f0c2e846d5fd5bb075f3ad931efe6f

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
Create hunting rule
Author:daniyyell
Description:Detects tiny VBS delivery technique
Rule name:without_attachments
Create hunting rule
Author:Antonio Sanchez <asanchez@hispasec.com>
Description:Rule to detect the no presence of any attachment
Reference:http://laboratorio.blogs.hispasec.com/
Rule name:with_urls
Create hunting rule
Author:Antonio Sanchez <asanchez@hispasec.com>
Description:Rule to detect the presence of an or several urls
Reference:http://laboratorio.blogs.hispasec.com/

File information

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

Web download

RemcosRAT

Visual Basic Script (vbs) vbs ee1a3803936b0f51c8fa1e2ce1fcbfe092f0c2e846d5fd5bb075f3ad931efe6f

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3560170/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/8173/

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