MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 33eec361ead2fd1b09d9cae5e83a5448ee97dcaa769f39bcd893201f2aec2fbc. 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: 8


Intelligence 8 IOCs YARA 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 33eec361ead2fd1b09d9cae5e83a5448ee97dcaa769f39bcd893201f2aec2fbc
SHA3-384 hash: 371a882298b8d0d7b96aa9273782706216a13d8762fcb95d18eda713b45bbfef8e24a21457982434d46e68d74a731be1
SHA1 hash: 9017ea01a981e20e240bb76610daa029eee5b62c
MD5 hash: a42a20039909afc2a34fd75abed362c4
humanhash: october-delaware-india-carolina
File name:Customs_Clearance.docx.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:14'676'886 bytes
First seen:2026-06-10 16:27:25 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 384:Ljjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj+:aK6JUV2eVu
TLSH T1ADE6048302E64330FEFF158065B82BD489329487CE34715D22DE6BA54FD76686EB817E
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Magika txt
Reporter abuse_ch
Tags:js RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
124
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a299162a15110463ee488ad
Tags:
n/a
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade repaired
Link:
https://www.filescan.io/uploads/6a2990a21f652d686575cd73/reports/ac86b901-8374-4940-8403-52258afb9d50/overview
Verdict:
Suspicious
Labled as:
VBS/Agent.TKB trojan
Link:
https://www.hybrid-analysis.com/sample/33eec361ead2fd1b09d9cae5e83a5448ee97dcaa769f39bcd893201f2aec2fbc
Verdict:
Malicious
File Type:
js
First seen:
2026-06-10T04:41:00Z UTC
Last seen:
2026-06-10T12:26:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/33eec361ead2fd1b09d9cae5e83a5448ee97dcaa769f39bcd893201f2aec2fbc/results?tab=lookup
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1926060
Signature
.NET source code contains potential unpacker
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Creates processes via WMI
Detected large data written to user environment variables, potentially indicating payload staging for fileless execution
Detected Remcos RAT
Drops script or batch files to the startup folder
Found malware configuration
Found stalling execution ending in API Sleep call
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Modifies the context of a thread in another process (thread injection)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Cscript/Wscript Uncommon Script Extension Execution
Sigma detected: Drops script at startup location
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Remcos
Sigma detected: Suspicious Environment Variable Has Been Registered
Sigma detected: Suspicious Parent Double Extension File Execution
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Unusual module load detection (module proxying)
Uses an obfuscated file name to hide its real file extension (double extension)
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 Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1926060 Sample: Customs_Clearance.docx.js Startdate: 10/06/2026 Architecture: WINDOWS Score: 100 31 res.cloudinary.com 2->31 33 cloudinary.map.fastly.net 2->33 41 Suricata IDS alerts for network traffic 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 16 other signatures 2->47 8 powershell.exe 14 15 2->8         started        12 wscript.exe 13 3 2->12         started        15 wscript.exe 1 2->15         started        17 svchost.exe 1 1 2->17         started        signatures3 process4 dnsIp5 37 cloudinary.map.fastly.net 151.101.65.137, 443, 49697, 49707 FASTLY-FastlyIncUS Canada 8->37 57 Writes to foreign memory regions 8->57 59 Modifies the context of a thread in another process (thread injection) 8->59 61 Injects a PE file into a foreign processes 8->61 63 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 8->63 19 appidtel.exe 4 8->19         started        23 conhost.exe 8->23         started        29 C:\Users\user\...\Customs_Clearance.docx.js, Unicode 12->29 dropped 65 Suspicious powershell command line found 12->65 67 Wscript starts Powershell (via cmd or directly) 12->67 69 Drops script or batch files to the startup folder 12->69 71 4 other signatures 12->71 25 powershell.exe 15->25         started        39 127.0.0.1 unknown unknown 17->39 file6 signatures7 process8 dnsIp9 35 83.142.209.134, 49698, 49699, 49702 GHOSTYNETWORKSUS Germany 19->35 49 Contains functionality to bypass UAC (CMSTPLUA) 19->49 51 Detected Remcos RAT 19->51 53 Found stalling execution ending in API Sleep call 19->53 55 Unusual module load detection (module proxying) 19->55 27 conhost.exe 25->27         started        signatures10 process11
Score:
18%
Verdict:
Benign
File Type:
SCRIPT
Link:
https://malprob.io/report/33eec361ead2fd1b09d9cae5e83a5448ee97dcaa769f39bcd893201f2aec2fbc
Gathering data
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/33eec361ead2fd1b09d9cae5e83a5448ee97dcaa769f39bcd893201f2aec2fbc/
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gpxmgypk2l6rwcozzls6qosujdxjpxfko2pttpgysmqb6kxmf66a._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:host execution rat
Link:
https://tria.ge/reports/260610-tz9k8aew3p/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
Suspicious use of SetThreadContext
Drops startup file
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Family: Remcos
Process spawned unexpected child process
Malware Config
C2 Extraction:
83.142.209.134:8080
Please note that we are no longer able to provide a coverage score for Virus Total.

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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
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:Remcos_unpacked_PulseIntel
Create hunting rule
Author:PulseIntel
Description:Remcos Payload
Rule name:Sus_All_Windows_PE_Malware
Create hunting rule
Author:DiegoAnalytics
Description:Detects Windows PE malware of all types, avoids non-executables like .html
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:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.
Rule name:Windows_Trojan_Remcos_921ef449
Create hunting rule
Author:Elastic Security
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_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.

Comments