MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4dc004e3df7a834d16e8510e90b61e5b211dbef9e563c9d5471ae9ec9f7b9a2c. 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: 10


Intelligence 10 IOCs YARA 1 File information Comments
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SHA256 hash: 4dc004e3df7a834d16e8510e90b61e5b211dbef9e563c9d5471ae9ec9f7b9a2c
SHA3-384 hash: 8baddadeb3d06a87b98f8dead15b28fc916c38b4b3a85fd0c082a3440ced59b45a8afbd4617efba4e0a400cb2ad69251
SHA1 hash: 9aedefd5035a3f0def49d63c41392930eee0f231
MD5 hash: 6e29fff42de3c3d567ed9a1bc5b929b5
humanhash: alabama-seven-triple-artist
File name:Confidential agreement_11_8.vbs
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:48'435 bytes
First seen:2023-11-09 07:18:16 UTC
Last seen:2023-11-09 13:58:19 UTC
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 768:xxmAettWD0SB+70QInPp0ReHelOUZLq43sWACSH24kGj:xxvqoD0yPuReHe1tqKsWNSW4kGj
TLSH T12D23E462D6D4F71C48CA278EDC43894081A58525E21277B9BDB8528E71CEDCCD3AF6CB
Reporter abuse_ch
Tags:RemcosRAT vbs

Intelligence

File Origin
# of uploads :
3
# of downloads :
100
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Script.SNH-gen.30604.3870.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm powershell
Link:
https://www.filescan.io/uploads/654c87fa886b1623ff3cab6c/reports/37b2d65d-c6e1-406e-9654-012ef18d5d87/overview
Verdict:
Malicious
Labled as:
TrojanDownloader/VBS.Agent
Link:
https://www.hybrid-analysis.com/sample/4dc004e3df7a834d16e8510e90b61e5b211dbef9e563c9d5471ae9ec9f7b9a2c
Result
Verdict:
MALICIOUS
Result
Threat name:
Remcos, GuLoader
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1339541
Signature
Antivirus detection for URL or domain
Contains functionality to modify clipboard data
Creates files with lurking names (e.g. Crack.exe)
Drops PE files with a suspicious file extension
Found suspicious powershell code related to unpacking or dynamic code loading
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Obfuscated command line found
Potential malicious VBS script found (suspicious strings)
Powershell uses Background Intelligent Transfer Service (BITS)
Sigma detected: Remcos
Suspicious powershell command line found
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
Very long command line found
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 GuLoader
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1339541 Sample: Confidential_agreement_11_8.vbs Startdate: 09/11/2023 Architecture: WINDOWS Score: 100 67 stranici-imobiliare.ro 2->67 69 ourladyfatima.org 2->69 71 geoplugin.net 2->71 87 Multi AV Scanner detection for domain / URL 2->87 89 Malicious sample detected (through community Yara rule) 2->89 91 Antivirus detection for URL or domain 2->91 93 8 other signatures 2->93 13 wscript.exe 1 2->13         started        16 svchost.exe 1 2 2->16         started        signatures3 process4 dnsIp5 113 VBScript performs obfuscated calls to suspicious functions 13->113 115 Suspicious powershell command line found 13->115 117 Wscript starts Powershell (via cmd or directly) 13->117 119 3 other signatures 13->119 19 powershell.exe 16 13->19         started        63 stranici-imobiliare.ro 31.14.23.111, 443, 49713, 49714 GTSCEGTSCentralEuropeAntelGermanyCZ Romania 16->63 65 127.0.0.1 unknown unknown 16->65 signatures6 process7 signatures8 95 Suspicious powershell command line found 19->95 97 Obfuscated command line found 19->97 99 Very long command line found 19->99 22 powershell.exe 19 19->22         started        25 conhost.exe 19->25         started        process9 signatures10 101 Suspicious powershell command line found 22->101 103 Very long command line found 22->103 105 Writes to foreign memory regions 22->105 107 3 other signatures 22->107 27 wab.exe 6 15 22->27         started        process11 dnsIp12 75 45.95.169.191, 2404, 49719, 49720 GIGANET-HUGigaNetInternetServiceProviderCoHU Croatia (LOCAL Name: Hrvatska) 27->75 77 geoplugin.net 178.237.33.50, 49722, 80 ATOM86-ASATOM86NL Netherlands 27->77 61 C:\Users\user\AppData\...\humoristical.pif, PE32 27->61 dropped 121 Maps a DLL or memory area into another process 27->121 32 humoristical.pif 27 27->32         started        36 wab.exe 1 27->36         started        38 wab.exe 1 27->38         started        40 2 other processes 27->40 file13 signatures14 process15 file16 53 C:\Users\user\AppData\Local\...\flatterer.rei, data 32->53 dropped 55 C:\Users\user\AppData\Local\...\allosaur.par, data 32->55 dropped 57 C:\Users\user\AppData\Local\...\Omstber.uns, data 32->57 dropped 59 3 other malicious files 32->59 dropped 79 Creates files with lurking names (e.g. Crack.exe) 32->79 42 powershell.exe 32->42         started        81 Tries to steal Instant Messenger accounts or passwords 36->81 83 Tries to steal Mail credentials (via file / registry access) 36->83 85 Tries to harvest and steal browser information (history, passwords, etc) 38->85 signatures17 process18 signatures19 109 Suspicious powershell command line found 42->109 111 Very long command line found 42->111 45 powershell.exe 42->45         started        48 conhost.exe 42->48         started        process20 signatures21 123 Writes to foreign memory regions 45->123 50 wab.exe 45->50         started        process22 dnsIp23 73 ourladyfatima.org 103.149.165.143, 443, 49724 HOSTNET-AS-INThePinnacleGroupIncIN unknown 50->73
Score:
99%
Verdict:
Malware
File Type:
ASCII
Link:
https://malprob.io/report/4dc004e3df7a834d16e8510e90b61e5b211dbef9e563c9d5471ae9ec9f7b9a2c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4dc004e3df7a834d16e8510e90b61e5b211dbef9e563c9d5471ae9ec9f7b9a2c/
Threat name:
Script-WScript.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2023-11-09 07:19:06 UTC
File Type:
Text (VBS)
AV detection:
10 of 38 (26.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jxaajy67pkbu2fxikehjbnq6lmqr3pxz4vr4tvkhdlu6zh33tiwa._file
Verdict:
unknown
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:remcos botnet:remotehost collection downloader persistence rat
Link:
https://tria.ge/reports/231109-h5hh5she63/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
NSIS installer
Enumerates physical storage devices
Program crash
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Guloader,Cloudeye
Remcos
Malware Config
C2 Extraction:
45.95.169.191:2404
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4dc004e3df7a/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/4dc004e3df7a834d16e8510e90b61e5b211dbef9e563c9d5471ae9ec9f7b9a2c

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:Guloader_VBScript
Create hunting rule
Author:Ankit Anubhav - ankitanubhav.info
Description:Detects GuLoader/CloudEye VBScripts

File information

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

Malspam

RemcosRAT

Visual Basic Script (vbs) vbs 4dc004e3df7a834d16e8510e90b61e5b211dbef9e563c9d5471ae9ec9f7b9a2c

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments