MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 febef3a364126ac2aa64f960389c62bd38cc9cfced7606726afe7f0824c239a7. 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: 15


Intelligence 15 IOCs YARA 20 File information Comments
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SHA256 hash: febef3a364126ac2aa64f960389c62bd38cc9cfced7606726afe7f0824c239a7
SHA3-384 hash: 0ab02bb834b373b0f9af2e3f6f42a4966cf038de051572d5b42ae5229fc33c9ad8cba77948c559ded9e8e9b09a5639a8
SHA1 hash: 54519401d7349e02283cc315fb05804db696a950
MD5 hash: f738b90c27a2885ed18b1bdc7e021d93
humanhash: solar-connecticut-lithium-nine
File name:Quotes & Specifications_1761603166_xls.vbs
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:821'210 bytes
First seen:2025-10-29 11:59:30 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 24576:3W8/6V8herao78cUwOTr6+KhVxZ7t3sB51l:2V8fcG2Nxs5l
Threatray 107 similar samples on MalwareBazaar
TLSH T15C058A39876A9C84026B63FF30F97B011C5DCA1E84F1AEF8B7D664B31850978869E774
Magika vba
Reporter abuse_ch
Tags:RAT RemcosRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
72
Origin country :
SE SE
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/34603/
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=690202199942f1282eca0af3
Tags:
autorun lien
Verdict:
Malicious
Labled as:
VBS/TrojanDropper.Agent
Link:
https://www.hybrid-analysis.com/sample/febef3a364126ac2aa64f960389c62bd38cc9cfced7606726afe7f0824c239a7
Verdict:
Malicious
File Type:
text
First seen:
2025-10-29T07:02:00Z UTC
Last seen:
2025-10-30T15:01:00Z UTC
Hits:
~10
Detections:
Trojan.Win32.Shellcode.sb Trojan.JS.SAgent.sb HEUR:Trojan.Script.Generic HEUR:Trojan.PowerShell.Tesre.sb Backdoor.Win32.Remcos.e Trojan-Downloader.JS.Cryptoload.sb
Link:
https://opentip.kaspersky.com/febef3a364126ac2aa64f960389c62bd38cc9cfced7606726afe7f0824c239a7/results?tab=lookup
Result
Threat name:
Remcos, DonutLoader
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1803838
Signature
.NET source code contains a sample name check
.NET source code references suspicious native API functions
Antivirus detection for dropped file
Attempt to bypass Chrome Application-Bound Encryption
C2 URLs / IPs found in malware configuration
Creates processes via WMI
Detected Remcos RAT
Drops script or batch files to the startup folder
Found evasive API chain checking for user administrative privileges
Found hidden mapped module (file has been removed from disk)
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
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 drops PE file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Drops script at startup location
Sigma detected: Potential Data Stealing Via Chromium Headless Debugging
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: PowerShell Base64 Encoded IEX Cmdlet
Sigma detected: Remcos
Sigma detected: Windows Shell/Scripting Application File Write to Suspicious Folder
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Switches to a custom stack to bypass stack traces
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)
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 DonutLoader
Yara detected Powershell decode 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 signatures2 2 Behavior Graph ID: 1803838 Sample: Quotes & Specifications_176... Startdate: 29/10/2025 Architecture: WINDOWS Score: 100 121 Suricata IDS alerts for network traffic 2->121 123 Found malware configuration 2->123 125 Malicious sample detected (through community Yara rule) 2->125 127 20 other signatures 2->127 11 wscript.exe 1 2->11         started        15 cmd.exe 1 2->15         started        17 cmd.exe 2->17         started        19 4 other processes 2->19 process3 file4 95 C:\Users\Public\PruningHub.bat, ASCII 11->95 dropped 147 Wscript starts Powershell (via cmd or directly) 11->147 149 Windows Scripting host queries suspicious COM object (likely to drop second stage) 11->149 151 Suspicious execution chain found 11->151 153 Creates processes via WMI 11->153 21 cmd.exe 1 11->21         started        24 cmd.exe 1 15->24         started        26 conhost.exe 15->26         started        28 cmd.exe 17->28         started        30 conhost.exe 17->30         started        32 cmd.exe 19->32         started        34 cmd.exe 19->34         started        36 cmd.exe 19->36         started        38 5 other processes 19->38 signatures5 process6 signatures7 137 Suspicious powershell command line found 21->137 139 Wscript starts Powershell (via cmd or directly) 21->139 40 cmd.exe 1 21->40         started        42 conhost.exe 21->42         started        44 cmd.exe 1 24->44         started        47 cmd.exe 28->47         started        49 cmd.exe 32->49         started        51 cmd.exe 34->51         started        53 cmd.exe 36->53         started        55 cmd.exe 38->55         started        process8 signatures9 57 cmd.exe 2 40->57         started        155 Suspicious powershell command line found 44->155 157 Wscript starts Powershell (via cmd or directly) 44->157 60 powershell.exe 44->60         started        63 conhost.exe 44->63         started        65 powershell.exe 47->65         started        67 conhost.exe 47->67         started        69 2 other processes 49->69 71 2 other processes 51->71 73 2 other processes 53->73 75 2 other processes 55->75 process10 file11 141 Suspicious powershell command line found 57->141 143 Wscript starts Powershell (via cmd or directly) 57->143 77 powershell.exe 5 41 57->77         started        82 conhost.exe 57->82         started        97 C:\Users\user\AppData\Roaming\...\6318.bat, ASCII 60->97 dropped 145 Detected Remcos RAT 60->145 99 C:\Users\user\AppData\Roaming\...\5ce3.bat, ASCII 65->99 dropped 101 C:\Users\user\AppData\Roaming\...\1092.bat, ASCII 69->101 dropped 103 C:\Users\user\AppData\Roaming\...\03f8.bat, ASCII 71->103 dropped 105 C:\Users\user\AppData\Roaming\...\c92a.bat, ASCII 73->105 dropped 107 C:\Users\user\AppData\Roaming\...\9d4f.bat, ASCII 75->107 dropped signatures12 process13 dnsIp14 117 192.227.128.173, 3028, 49685, 49686 AS-COLOCROSSINGUS United States 77->117 119 127.0.0.1 unknown unknown 77->119 109 C:\Users\user\AppData\Local\Temp\TH4A2F.tmp, MS-DOS 77->109 dropped 111 C:\Users\user\AppData\Local\Temp\TH483A.tmp, MS-DOS 77->111 dropped 113 C:\Users\user\AppData\Local\Temp\TH4645.tmp, PE32 77->113 dropped 115 3 other malicious files 77->115 dropped 159 Detected Remcos RAT 77->159 161 Attempt to bypass Chrome Application-Bound Encryption 77->161 163 Drops script or batch files to the startup folder 77->163 165 10 other signatures 77->165 84 RmClient.exe 2 77->84         started        87 RmClient.exe 1 77->87         started        89 RmClient.exe 1 77->89         started        91 msedge.exe 7 77->91         started        file15 signatures16 process17 signatures18 129 Tries to steal Mail credentials (via file registry) 84->129 131 Tries to harvest and steal browser information (history, passwords, etc) 84->131 133 Tries to steal Instant Messenger accounts or passwords 87->133 135 Tries to steal Mail credentials (via file / registry access) 87->135 93 msedge.exe 91->93         started        process19
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/febef3a364126ac2aa64f960389c62bd38cc9cfced7606726afe7f0824c239a7
Verdict:
Malware
YARA:
2 match(es)
Tags:
Base64 Block Contains Base64 Block DeObfuscated Obfuscated PowerShell Scripting.FileSystemObject T1059.005 VBScript
Link:
https://app.malva.re/file/f738b90c27a2885ed18b1bdc7e021d93
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/febef3a364126ac2aa64f960389c62bd38cc9cfced7606726afe7f0824c239a7/
Verdict:
Malicious
Threat:
Family.DONUTLOADER
Link:
https://tip.neiki.dev/file/febef3a364126ac2aa64f960389c62bd38cc9cfced7606726afe7f0824c239a7
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2025-10-29 12:01:35 UTC
File Type:
Text
AV detection:
8 of 37 (21.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=727phi3ecjvmfkte7fqdrhdcxu4mzhh45v3am4tk7z7qqjgchgtq._file
Verdict:
malicious
Label(s):
donut_injector
Create hunting rule
remcos
Create hunting rule
Similar samples:
3c4850bad9e48453996875f76725ab4caf188613ec4621fef7fbca2fd19c2147
RemcosRAT
4ffb945bc637b8c2e1d287c1f6127121d967e1366f0a437f2b7f505fac391f5d
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54b32bcf49895b56cc5a2f15fbefd0ed30ee9aef1aafbcf4eaf2f288e8384617
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80943dad82a060b3506f2312c2d282f117e08a1b16cd9f1f6fcaf852be916407
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9c7bccc9beab63a3ebf8995eb4ad568c15e7b65421e11fadbac663d4bc8ef792
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ba155a5175493aa4e350cc470165e37632573b06c353db839f02c9eecc06a8a9
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c880b07833516db3450a16cf33c94dc08ff6aa49990bba2a2c1f3b5b93e61b8c
RemcosRAT
cb989e4fdf9c4b22e13f3d308eed92711a441e8323d08f395f41a76e03a97dcf
RemcosRAT
cc2204af1024b7fc2c9c7e0132ce788518f3d835741d489886fbab703c08d400
RemcosRAT
d1cfc53e81fdcf625be8284ee7ed47fa1256de5222d2b1d4064524e90724df4e
RemcosRAT
error
RemcosRAT
+ 97 additional samples on MalwareBazaar
Result
Malware family:
donutloader
Create hunting rule
Score:
  10/10
Tags:
family:donutloader collection credential_access discovery execution loader stealer
Link:
https://tria.ge/reports/251029-n6yveawlcm/
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Drops startup file
Executes dropped EXE
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Uses browser remote debugging
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Detects DonutLoader
DonutLoader
Donutloader family
Process spawned unexpected child process
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/febef3a364126ac2aa64f960389c62bd38cc9cfced7606726afe7f0824c239a7

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
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:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
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:pe_detect_tls_callbacks
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
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:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
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.

Cape
Cape
https://www.capesandbox.com/analysis/34603/

Comments