MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8f10c23448f6d30808e7e74322ebd4121cf2c589c86cc3b0b57df6c705a867e. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
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SHA256 hash: b8f10c23448f6d30808e7e74322ebd4121cf2c589c86cc3b0b57df6c705a867e
SHA3-384 hash: 945661a9f74bc59b739096992009af3100872b4673c20f078c20de4976165ac76ef5a8c60f0ba886f9e1c8340e09594c
SHA1 hash: dba2cd6d833c67c32a4f67c9df28ddfb6de91d39
MD5 hash: f427445b955165562cd5fd65a7a31a20
humanhash: virginia-two-lemon-eleven
File name:RFQ PO-DF9087.vbs
Download: download sample
Signature RemcosRAT
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File size:897'550 bytes
First seen:2024-09-17 14:03:50 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 24576:Y9T0Ol06QuZ+eD1wcJWnRWNlSlok+x3aXNvi0:Y5lDQJBINlSG/qN
Threatray 4 similar samples on MalwareBazaar
TLSH T10715E162CF16B94D599311FC570F2B4B7DCC0CFC82A8EAE8E92D256415C5E39222B7D8
Magika vba
Reporter abuse_ch
Tags:RemcosRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
125
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Script.SNH-gen.29577.14497.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
91.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e98c5a5d6a2b58599a9277
Tags:
Stealth Trojan
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
dropper evasive packed
Link:
https://www.filescan.io/uploads/66e98c58fd42133a96cda3ec/reports/481865aa-9321-4292-8102-547233bbb10f/overview
Verdict:
Malicious
Labled as:
GT:VB.Heur2.Arakan.1
Link:
https://www.hybrid-analysis.com/sample/b8f10c23448f6d30808e7e74322ebd4121cf2c589c86cc3b0b57df6c705a867e
Result
Verdict:
MALICIOUS
Details
Base64 Encoded URL
Detected an ANSI or UNICODE http:// or https:// base64 encoded URL prefix.
Result
Threat name:
Remcos
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Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1512545
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for dropped file
Benign windows process drops PE files
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
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
Delayed program exit found
Detected Remcos RAT
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Potential malicious VBS script found (has network functionality)
Sigma detected: Potentially Suspicious ASP.NET Compilation Via AspNetCompiler
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
VBScript performs obfuscated calls to suspicious functions
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1512545 Sample: RFQ PO-DF9087.vbs Startdate: 17/09/2024 Architecture: WINDOWS Score: 100 35 geoplugin.net 2->35 45 Suricata IDS alerts for network traffic 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 10 other signatures 2->51 9 wscript.exe 2 2->9         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\Temp\x.exe, PE32+ 9->29 dropped 59 Benign windows process drops PE files 9->59 61 VBScript performs obfuscated calls to suspicious functions 9->61 63 Windows Scripting host queries suspicious COM object (likely to drop second stage) 9->63 13 x.exe 1 9->13         started        signatures6 process7 signatures8 65 Antivirus detection for dropped file 13->65 67 Multi AV Scanner detection for dropped file 13->67 69 Machine Learning detection for dropped file 13->69 71 3 other signatures 13->71 16 aspnet_compiler.exe 3 13 13->16         started        process9 dnsIp10 31 192.3.101.29, 14645, 49704, 49705 AS-COLOCROSSINGUS United States 16->31 33 geoplugin.net 178.237.33.50, 49706, 80 ATOM86-ASATOM86NL Netherlands 16->33 37 Contains functionality to bypass UAC (CMSTPLUA) 16->37 39 Detected Remcos RAT 16->39 41 Tries to steal Mail credentials (via file registry) 16->41 43 7 other signatures 16->43 20 aspnet_compiler.exe 1 16->20         started        23 aspnet_compiler.exe 1 16->23         started        25 aspnet_compiler.exe 2 16->25         started        27 aspnet_compiler.exe 16->27         started        signatures11 process12 signatures13 53 Tries to steal Instant Messenger accounts or passwords 20->53 55 Tries to steal Mail credentials (via file / registry access) 20->55 57 Tries to harvest and steal browser information (history, passwords, etc) 23->57
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/b8f10c23448f6d30808e7e74322ebd4121cf2c589c86cc3b0b57df6c705a867e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b8f10c23448f6d30808e7e74322ebd4121cf2c589c86cc3b0b57df6c705a867e/
Threat name:
Win32.Trojan.Arakan
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Status:
Malicious
First seen:
2024-09-17 05:11:22 UTC
File Type:
Text (VBS)
AV detection:
5 of 38 (13.16%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xdyqyi2er5wtbaeopz2delv5ieq46lcytsdmyoylk7pwy4c2qz7a._file
Verdict:
malicious
Similar samples:
93a80d67b37cc6bd27ec07dce5fa342e920c3edef436e78c39c3641d6f6ed79e
RemcosRAT
cf932f84c26f6d3665b03afbe44e50bf77342af73b4a1f101d48a5750fb3bf23
RemcosRAT
Result
Malware family:
remcos
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Score:
  10/10
Tags:
family:remcos botnet:remotehost collection credential_access discovery rat stealer
Link:
https://tria.ge/reports/240917-rc9xcsxbmk/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Credentials from Password Stores: Credentials from Web Browsers
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Malware Config
C2 Extraction:
192.3.101.29:14645
192.3.101.29:1070
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
AlphaCrypt
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b8f10c23448f6d30808e7e74322ebd4121cf2c589c86cc3b0b57df6c705a867e

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_Malicious_VBScript_Base64
Create hunting rule
Author:daniyyell
Description:Detects malicious VBScript patterns, including Base64 decoding, file operations, and PowerShell.
Rule name:detect_tiny_vbs
Create hunting rule
Author:daniyyell
Description:Detects tiny VBS delivery technique

File information

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

Comments