MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e7e8137340af7ef0df460facf4f79c46b0ff6bf94cb29a29e5bcc26241ac2021. 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 1 YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e7e8137340af7ef0df460facf4f79c46b0ff6bf94cb29a29e5bcc26241ac2021
SHA3-384 hash: f6654c4dc99c82794b8223913d8ae77384d70d58d6560a5198e263d625f56cdf4c07b990dec87cf331f4426d1345e45c
SHA1 hash: 02f9c347f88e26f4c350df2d0253eb5b7a931c55
MD5 hash: 9a7e68c80dd3e3b705100a2c0a4ac706
humanhash: autumn-twenty-mockingbird-beryllium
File name:bestintervaltimeforbestsuccestobe.hta
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:46'332 bytes
First seen:2025-05-23 14:47:27 UTC
Last seen:Never
File type:HTML Application (hta) hta
MIME type:text/html
ssdeep 192:/vDyGFSWamMbBWxmMb/Xg/IIKTHwmwhEJpsiufpuZf+WJW7KmMbvQWWAt:Dy+h8kbIKTHHwhEJiiufpuZfWTQt
TLSH T1E12319F4CB3B217F2DAC2AC09E59DB95C4BDA8336A5E1159E6083BD805E0D1532DDB0E
Magika txt
Reporter abuse_ch
Tags:hta RemcosRAT

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
172.245.208.27:14645 https://threatfox.abuse.ch/ioc/1532918/

Intelligence

File Origin
# of uploads :
1
# of downloads :
84
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.JS.Starter.96.17695.31586.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=683097c74912a6b9dd4c791c
Tags:
obfuscate shell sage
Result
Verdict:
Clean
File Type:
HTA File
Link:
https://app.docguard.net/e7e8137340af7ef0df460facf4f79c46b0ff6bf94cb29a29e5bcc26241ac2021/results/dashboard
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/e7e8137340af7ef0df460facf4f79c46b0ff6bf94cb29a29e5bcc26241ac2021
Result
Threat name:
Cobalt Strike, Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1698140
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
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 Cobalt Strike Beacon
Detected Remcos RAT
Found hidden mapped module (file has been removed from disk)
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
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
PowerShell case anomaly found
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: Potentially Suspicious PowerShell Child Processes
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Remcos
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious MSHTA Child Process
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious command line found
Suspicious execution chain found
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)
Uses threadpools to delay analysis
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 AntiVM3
Yara detected Powershell decode and execute
Yara detected Powershell download and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1698140 Sample: bestintervaltimeforbestsucc... Startdate: 23/05/2025 Architecture: WINDOWS Score: 100 65 geoplugin.net 2->65 79 Suricata IDS alerts for network traffic 2->79 81 Found malware configuration 2->81 83 Malicious sample detected (through community Yara rule) 2->83 85 21 other signatures 2->85 12 mshta.exe 1 2->12         started        signatures3 process4 signatures5 105 Suspicious command line found 12->105 107 PowerShell case anomaly found 12->107 109 Uses threadpools to delay analysis 12->109 15 cmd.exe 1 12->15         started        process6 signatures7 119 Detected Cobalt Strike Beacon 15->119 121 Suspicious powershell command line found 15->121 123 Wscript starts Powershell (via cmd or directly) 15->123 125 PowerShell case anomaly found 15->125 18 powershell.exe 3 45 15->18         started        23 conhost.exe 15->23         started        process8 dnsIp9 67 185.29.9.60, 49718, 49723, 80 DATACLUB-SE European Union 18->67 51 C:\Users\user\AppData\...\dx3azjfj.cmdline, Unicode 18->51 dropped 53 C:\...\bestintervaltimeforbestsuccestobe.vbe, Unicode 18->53 dropped 87 Loading BitLocker PowerShell Module 18->87 25 wscript.exe 1 18->25         started        28 csc.exe 3 18->28         started        file10 signatures11 process12 file13 97 Detected Cobalt Strike Beacon 25->97 99 Suspicious powershell command line found 25->99 101 Wscript starts Powershell (via cmd or directly) 25->101 103 2 other signatures 25->103 31 powershell.exe 15 16 25->31         started        63 C:\Users\user\AppData\Local\...\dx3azjfj.dll, PE32 28->63 dropped 35 cvtres.exe 1 28->35         started        signatures14 process15 dnsIp16 73 208.89.61.141, 49722, 80 AXCELX-NETUS United States 31->73 75 Writes to foreign memory regions 31->75 77 Injects a PE file into a foreign processes 31->77 37 CasPol.exe 4 19 31->37         started        42 conhost.exe 31->42         started        signatures17 process18 dnsIp19 69 172.245.208.27, 14645, 49724, 49725 AS-COLOCROSSINGUS United States 37->69 71 geoplugin.net 178.237.33.50, 49726, 80 ATOM86-ASATOM86NL Netherlands 37->71 55 C:\Users\user\AppData\Local\Temp\THAFFB.tmp, MS-DOS 37->55 dropped 57 C:\Users\user\AppData\Local\Temp\THAFDB.tmp, MS-DOS 37->57 dropped 59 C:\Users\user\AppData\Local\Temp\THAFAB.tmp, PE32 37->59 dropped 61 C:\ProgramData\remcos\logs.dat, data 37->61 dropped 89 Contains functionality to bypass UAC (CMSTPLUA) 37->89 91 Detected Remcos RAT 37->91 93 Contains functionalty to change the wallpaper 37->93 95 6 other signatures 37->95 44 svchost.exe 14 37->44         started        47 svchost.exe 1 37->47         started        49 svchost.exe 37->49         started        file20 signatures21 process22 signatures23 111 Tries to steal Mail credentials (via file registry) 44->111 113 Tries to harvest and steal browser information (history, passwords, etc) 44->113 115 Tries to steal Instant Messenger accounts or passwords 47->115 117 Tries to steal Mail credentials (via file / registry access) 47->117
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/e7e8137340af7ef0df460facf4f79c46b0ff6bf94cb29a29e5bcc26241ac2021
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e7e8137340af7ef0df460facf4f79c46b0ff6bf94cb29a29e5bcc26241ac2021/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-05-22 16:30:34 UTC
File Type:
Text (HTML)
Extracted files:
1
AV detection:
7 of 24 (29.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=47ubg42av57pbx2gb6wpj544i2yp627zjszjukpfxtbgeqnmeaqq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection defense_evasion discovery execution rat
Link:
https://tria.ge/reports/250523-s4dhxaer4v/
Behaviour
Modifies registry class
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
Accesses Microsoft Outlook accounts
Checks computer location settings
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Evasion via Device Credential Deployment
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
172.245.208.27:14645
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e7e8137340af/report/overview.html
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/e7e8137340af7ef0df460facf4f79c46b0ff6bf94cb29a29e5bcc26241ac2021

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Remcos_unpacked_PulseIntel
Create hunting rule
Author:PulseIntel
Description:Remcos Payload
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:win_remcos_rat_unpacked
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research

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 e7e8137340af7ef0df460facf4f79c46b0ff6bf94cb29a29e5bcc26241ac2021

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3550882/
  
Delivery method
Distributed via web download

Comments