MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f15b81d00d3d99f387f0a55d7ef0d59326b35eeb9987c15574db35fa81f26e93. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f15b81d00d3d99f387f0a55d7ef0d59326b35eeb9987c15574db35fa81f26e93
SHA3-384 hash: b3690afe329fedd193bbb23c86d78c122e42a7e8f1a69e661b5eb790c7104379852969da8995b56262ba446ca9289f86
SHA1 hash: 3a528fe7efe9b306675374975643edf54f10343e
MD5 hash: 71d40d180545fb20c1f1e94a1ecb65fd
humanhash: october-five-oxygen-video
File name:greatdaycomingforyourwithbestthingsbetter.hta
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'902 bytes
First seen:2025-03-04 10:37:54 UTC
Last seen:Never
File type:HTML Application (hta) hta
MIME type:text/html
ssdeep 24:hPgWw2dSATyThquNH4jFsLkgSDN2r7oBWQjHCxbSOfypwym81AktMCO:tgNqSXqumq2hag9EbkGCO
Threatray 977 similar samples on MalwareBazaar
TLSH T172416421ED83449CA13244A26C63D504F6A096AB87053D28394DCCB37F303CFF6A9ACA
Magika txt
Reporter abuse_ch
Tags:hta RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
101
Origin country :
DE DE
Vendor Threat Intelligence
Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67c6d8b6c668b65489beec41
Tags:
stration spawn sage
Result
Verdict:
Malicious
File Type:
HTA File - Malicious
Link:
https://app.docguard.net/f15b81d00d3d99f387f0a55d7ef0d59326b35eeb9987c15574db35fa81f26e93/results/dashboard
Payload URLs
URL
File name
https://paste.ee/d/4qR8HzPc/0
HTA File
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd evasive lolbin timeout wscript
Link:
https://www.filescan.io/uploads/67c6d820f8726576332cdab7/reports/c6a78d50-496c-4e1f-8836-e0e1f61af75c/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/f15b81d00d3d99f387f0a55d7ef0d59326b35eeb9987c15574db35fa81f26e93
Result
Verdict:
UNKNOWN
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.spre.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1629107
Signature
C2 URLs / IPs found in malware configuration
Command shell drops VBS files
Connects to a pastebin service (likely for C&C)
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
Detected Remcos RAT
Found malware configuration
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Legitimate Application Dropped Script
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Remcos
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious MSHTA Child Process
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: Windows Shell/Scripting Application File Write to Suspicious Folder
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
System process connects to network (likely due to code injection or exploit)
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)
Uses dynamic DNS services
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
Yara detected VBS Downloader Generic
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1629107 Sample: greatdaycomingforyourwithbe... Startdate: 04/03/2025 Architecture: WINDOWS Score: 100 46 nwmmww0oaksod00.duckdns.org 2->46 48 paste.ee 2->48 50 geoplugin.net 2->50 62 Suricata IDS alerts for network traffic 2->62 64 Found malware configuration 2->64 66 Malicious sample detected (through community Yara rule) 2->66 72 17 other signatures 2->72 11 mshta.exe 2 2->11         started        signatures3 68 Uses dynamic DNS services 46->68 70 Connects to a pastebin service (likely for C&C) 48->70 process4 file5 42 C:\Windows\Temp\verbalizes.bat, DOS 11->42 dropped 14 cmd.exe 2 11->14         started        process6 file7 44 C:\Windows\Temp\interestedly.vbs, ASCII 14->44 dropped 98 Command shell drops VBS files 14->98 18 wscript.exe 14 14->18         started        22 conhost.exe 14->22         started        24 timeout.exe 1 14->24         started        signatures8 process9 dnsIp10 52 paste.ee 23.186.113.60, 443, 49705 KLAYER-GLOBALNL Reserved 18->52 74 System process connects to network (likely due to code injection or exploit) 18->74 76 Suspicious powershell command line found 18->76 78 Wscript starts Powershell (via cmd or directly) 18->78 80 2 other signatures 18->80 26 powershell.exe 15 15 18->26         started        signatures11 process12 dnsIp13 54 104.168.7.26, 49707, 80 AS-COLOCROSSINGUS United States 26->54 56 172.245.123.17, 49706, 80 AS-COLOCROSSINGUS United States 26->56 29 CasPol.exe 4 13 26->29         started        33 conhost.exe 26->33         started        process14 dnsIp15 58 nwmmww0oaksod00.duckdns.org 198.12.81.137, 14646, 49708, 49710 AS-COLOCROSSINGUS United States 29->58 60 geoplugin.net 178.237.33.50, 49709, 80 ATOM86-ASATOM86NL Netherlands 29->60 90 Contains functionality to bypass UAC (CMSTPLUA) 29->90 92 Detected Remcos RAT 29->92 94 Contains functionalty to change the wallpaper 29->94 96 6 other signatures 29->96 35 recover.exe 14 29->35         started        38 recover.exe 1 29->38         started        40 recover.exe 1 29->40         started        signatures16 process17 signatures18 82 Tries to steal Mail credentials (via file registry) 35->82 84 Tries to harvest and steal browser information (history, passwords, etc) 35->84 86 Tries to steal Instant Messenger accounts or passwords 38->86 88 Tries to steal Mail credentials (via file / registry access) 38->88
Score:
0%
Verdict:
Benign
File Type:
SCRIPT
Link:
https://malprob.io/report/f15b81d00d3d99f387f0a55d7ef0d59326b35eeb9987c15574db35fa81f26e93
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f15b81d00d3d99f387f0a55d7ef0d59326b35eeb9987c15574db35fa81f26e93/
Threat name:
Win32.Exploit.Generic
Create hunting rule
Status:
Malicious
First seen:
2025-03-04 09:43:21 UTC
File Type:
Text (HTML)
Extracted files:
1
AV detection:
6 of 38 (15.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6fnyduanhwm7hb7quvox54gvsmtlgxxltgd4cvlu3m27vapsn2jq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
admintool_mailpassview
Create hunting rule
admintool_iepassview
Create hunting rule
Similar samples:
1a8c4a357230c2b388cb9cc9171ab0bcc37a194fdf99e69e6a42d8e1a3d2652b
RemcosRAT
24af52ae7f3afb9533d3ad2e4a845bdc69dc96388d4b98853b8dd567174a43b2
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2e4a8adeb10758473cd1d42e9869ee03840016814c6cfc0465303b19afaca46f
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32f32787e8bbc5276d6f9d1d1d8b0f5f762b33df9abf8a820f34d6e702603b99
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3799b7afd9b7360155c78f5c93934d8bb304b6eda203c442a285b0992f1f8c36
RemcosRAT
4cfc84d46074142fa3204777ac1a0cbd7ea155fcaf0739388df5d098abf8d7f4
RemcosRAT
548130edd9e2a0fc302a475316a4fbc2a2e2351c4f92f19ba73bfb72d10fe299
RemcosRAT
ad4a934328e699a5065c7c55ab3399d74134b5e97401175948b5296faf98d2a8
RemcosRAT
cc985a14a3106fa6cd7d46894e6e986a6e47c8f3a11f50c080cf85dc050d00c0
RemcosRAT
error
RemcosRAT
+ 967 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection discovery execution rat
Link:
https://tria.ge/reports/250304-mphlesyqv9/
Behaviour
Delays execution with timeout.exe
Modifies Internet Explorer settings
Modifies system certificate store
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
Command and Scripting Interpreter: PowerShell
Checks computer location settings
Blocklisted process makes network request
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
nwmmww0oaksod00.duckdns.org:14646
nwmmww0oaksod00.duckdns.org:14645
nwmmww0oaksod00.duckdns.org:1070
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/f15b81d00d3d99f387f0a55d7ef0d59326b35eeb9987c15574db35fa81f26e93

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:SUSP_Websites
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects the reference of suspicious sites that might be used to download further malware

File information

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

Web download

RemcosRAT

HTML Application (hta) hta f15b81d00d3d99f387f0a55d7ef0d59326b35eeb9987c15574db35fa81f26e93

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3465322/
  
Delivery method
Distributed via web download

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