MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31b4230ab0b1e15b55948c13c881ac07627b49cbf2cddd29bef7e527536896b4. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments
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SHA256 hash: 31b4230ab0b1e15b55948c13c881ac07627b49cbf2cddd29bef7e527536896b4
SHA3-384 hash: cc426517c21e5049c2bc1598c56ac869009e24c36863ca767272971439c642546105c9713be4e13efed9be12a3771fb8
SHA1 hash: 22c5a6d3df6cbc78303a3309c0859bc1a080f7e9
MD5 hash: 507901780438f38bcd55386972a90f44
humanhash: blossom-romeo-friend-montana
File name:INVSO269936_pdf.vbs
Download: download sample
Signature RemcosRAT
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File size:195'446 bytes
First seen:2025-02-07 08:01:50 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 3072:mV5VjCwpL15Yhn/Ui59Ymd95DnpTkwKxWccMF+:mV5Vq59Ymd1
Threatray 4'270 similar samples on MalwareBazaar
TLSH T1DD14DFC7FE5A54100426BD2ADBDD7C927A3D3D057F4666A8388C09D34BBDB0181B1EAE
Magika vba
Reporter abuse_ch
Tags:RemcosRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
97
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Script.SNH-gen.6263.31177.UNOFFICIAL
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Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67a5bedadbfc8aaee8cd6448
Tags:
obfuscate xtreme shell
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade
Link:
https://www.filescan.io/uploads/67a5be07a55c685dbbf27293/reports/d32d9056-5645-4e69-a3aa-3f3a07dbdb7c/overview
Verdict:
Suspicious
Labled as:
VBS/Agent.BXM1
Link:
https://www.hybrid-analysis.com/sample/31b4230ab0b1e15b55948c13c881ac07627b49cbf2cddd29bef7e527536896b4
Result
Verdict:
UNKNOWN
Result
Threat name:
Remcos
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Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1609053
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Command shell drops VBS files
Connects to a pastebin service (likely for C&C)
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
Found malware configuration
Found Tor onion address
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
Potential malicious VBS script found (suspicious strings)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Net WebClient Casing Anomalies
Sigma detected: PowerShell Base64 Encoded FromBase64String 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
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 download and execute
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1609053 Sample: INVSO269936_pdf.vbs Startdate: 07/02/2025 Architecture: WINDOWS Score: 100 43 paste.ee 2->43 45 meme7.work.gd 2->45 47 5 other IPs or domains 2->47 57 Suricata IDS alerts for network traffic 2->57 59 Found malware configuration 2->59 61 Malicious sample detected (through community Yara rule) 2->61 65 12 other signatures 2->65 9 wscript.exe 2 2->9         started        12 wscript.exe 1 2->12         started        signatures3 63 Connects to a pastebin service (likely for C&C) 43->63 process4 signatures5 81 VBScript performs obfuscated calls to suspicious functions 9->81 83 Suspicious powershell command line found 9->83 85 Wscript starts Powershell (via cmd or directly) 9->85 87 2 other signatures 9->87 14 powershell.exe 14 17 9->14         started        18 powershell.exe 12->18         started        process6 dnsIp7 53 paste.ee 23.186.113.60, 443, 49738, 49742 KLAYER-GLOBALNL Reserved 14->53 55 archive.org 207.241.224.2, 443, 49731, 49739 INTERNET-ARCHIVEUS United States 14->55 89 Found Tor onion address 14->89 91 Writes to foreign memory regions 14->91 93 Injects a PE file into a foreign processes 14->93 20 MSBuild.exe 14->20         started        23 cmd.exe 2 14->23         started        26 MSBuild.exe 2 15 14->26         started        29 conhost.exe 14->29         started        31 conhost.exe 18->31         started        33 MSBuild.exe 18->33         started        35 MSBuild.exe 18->35         started        37 2 other processes 18->37 signatures8 process9 dnsIp10 67 Contains functionalty to change the wallpaper 20->67 69 Contains functionality to steal Chrome passwords or cookies 20->69 71 Contains functionality to register a low level keyboard hook 20->71 79 2 other signatures 20->79 41 C:\ProgramData\hirundinidae.vbs, Unicode 23->41 dropped 73 Potential malicious VBS script found (suspicious strings) 23->73 75 Command shell drops VBS files 23->75 39 conhost.exe 23->39         started        49 meme7.work.gd 176.65.141.238, 3124, 49740 WEBTRAFFICDE Germany 26->49 51 geoplugin.net 178.237.33.50, 49741, 80 ATOM86-ASATOM86NL Netherlands 26->51 77 Installs a global keyboard hook 26->77 file11 signatures12 process13
Score:
1%
Verdict:
Benign
File Type:
SCRIPT
Link:
https://malprob.io/report/31b4230ab0b1e15b55948c13c881ac07627b49cbf2cddd29bef7e527536896b4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/31b4230ab0b1e15b55948c13c881ac07627b49cbf2cddd29bef7e527536896b4/
Threat name:
Script-WScript.Backdoor.Remcos
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Status:
Malicious
First seen:
2025-02-07 04:13:33 UTC
File Type:
Text (VBS)
AV detection:
11 of 38 (28.95%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gg2cgcvqwhqvwvmurqj4ranma5rhwsol6lg52kn667ssou3is22a._file
Verdict:
malicious
Label(s):
remcos
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Similar samples:
42b3442bc675f7ff95d660935ea8756710fea99551b1d614f2e8b7db739d72a0
RemcosRAT
5e95fb52da2144a06a66a593a6f12877108ebcdeb69f8f60ad010831d4fce1eb
RemcosRAT
7422bc2c77e70c2e90c27d030a13eb3adf0bcfc1ef2bc55b62871181af5cd955
RemcosRAT
92f6167d4a5a568418c7439917b262922745f536b091f9b6d059ca7b4475d6cd
RemcosRAT
a1333650518e3e435421e28233c84f8a5a1ca03607c5289a01da3f86e4046565
RemcosRAT
error
RemcosRAT
+ 4'260 additional samples on MalwareBazaar
Result
Malware family:
remcos
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Score:
  10/10
Tags:
family:remcos botnet:svc discovery execution rat
Link:
https://tria.ge/reports/250207-jw7x4svjgz/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Command and Scripting Interpreter: PowerShell
Checks computer location settings
Blocklisted process makes network request
Remcos
Remcos family
Malware Config
C2 Extraction:
meme7.work.gd:3124
Malware family:
DnlibLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/31b4230ab0b1/report/overview.html
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/31b4230ab0b1e15b55948c13c881ac07627b49cbf2cddd29bef7e527536896b4

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
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Author:daniyyell
Description:Detects tiny VBS delivery technique
Rule name:html_auto_download_b64
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Author:Tdawg
Description:html auto download
Rule name:NET
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Author:malware-lu

File information

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

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