MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b39a0af289058c72bdc7ad5530c2855a950db8914239c662be14847475ac8ed4. 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: 9


Intelligence 9 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b39a0af289058c72bdc7ad5530c2855a950db8914239c662be14847475ac8ed4
SHA3-384 hash: 737f18a02e51927b335185bf55828a4a7cf2171e0c554cc11b2ebaf4814f3b4e86a9db1182371f836bdab4fb1a7c83fc
SHA1 hash: c7383eb4915c8da2cf39c4c5c89c8f6cfb1d2162
MD5 hash: c50e5b1657afe0116a4eed4c13e9b6d4
humanhash: oklahoma-pip-jupiter-tango
File name:Update.vbs
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:5'107'894 bytes
First seen:2025-06-24 05:48:26 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 49152:cO04djs//k0ql3ZtWDM1pbm+bHFspI12BTI/JeEBsCBg:96
TLSH T10736F1CE7E0D5A98888232FA652885A2F2CC87D17305DBF2FD7CC45473958B8D66B781
Magika vba
Reporter abuse_ch
Tags:181-206-158-190 RemcosRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
81
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/10823/
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=685a3c4bb06783b9ebd6cb76
Tags:
vmdetect
Verdict:
Malicious
Labled as:
GT:VB.Honolulu.1
Link:
https://www.hybrid-analysis.com/sample/b39a0af289058c72bdc7ad5530c2855a950db8914239c662be14847475ac8ed4
Result
Threat name:
n/a
Detection:
malicious
Classification:
n/a
Score:
56 / 100
Link:
https://www.joesandbox.com/analysis/1721630
Signature
Multi AV Scanner detection for submitted file
Sigma detected: WScript or CScript Dropper
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Behaviour
Behavior Graph:
Download SVG
Score:
41%
Verdict:
Susipicious
File Type:
SCRIPT
Link:
https://malprob.io/report/b39a0af289058c72bdc7ad5530c2855a950db8914239c662be14847475ac8ed4
Verdict:
inconclusive
YARA:
2 match(es)
Link:
https://app.malva.re/file/c50e5b1657afe0116a4eed4c13e9b6d4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b39a0af289058c72bdc7ad5530c2855a950db8914239c662be14847475ac8ed4/
Threat name:
Win32.Trojan.Egairtigado
Create hunting rule
Status:
Malicious
First seen:
2025-06-24 01:00:05 UTC
File Type:
Text (VBS)
AV detection:
8 of 24 (33.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wonav4ujawghfpohvvktbquflkkq3oerii44myv6cschi5nmr3ka._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:tarrestaldo discovery execution rat
Link:
https://tria.ge/reports/250624-gja2haysfy/
Behaviour
Suspicious behavior: EnumeratesProcesses
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
Checks computer location settings
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Remcos
Remcos family
Malware Config
C2 Extraction:
updatedrvier.duckdns.org:3001
Dropper Extraction:
https://archive.org/download/wp4096799-lost-in-space-wallpapers_20250621_1447/wp4096799-lost-in-space-wallpapers.jpg
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/b39a0af289058c72bdc7ad5530c2855a950db8914239c662be14847475ac8ed4

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:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques
Rule name:Warp
Create hunting rule
Author:Seth Hardy
Description:Warp
Rule name:WarpStrings
Create hunting rule
Author:Seth Hardy
Description:Warp Identifying Strings

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 b39a0af289058c72bdc7ad5530c2855a950db8914239c662be14847475ac8ed4

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3560099/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3420607/
  
URLhaus
https://urlhaus.abuse.ch/url/3561700/
Cape
Cape
https://www.capesandbox.com/analysis/10823/

Comments