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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fd54f9b3a36484f1949a2356b1ea41e479516bc1beaab8026fecc1eab40576e0. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fd54f9b3a36484f1949a2356b1ea41e479516bc1beaab8026fecc1eab40576e0
SHA3-384 hash: 5066d79c4350292eeac0c33e6f25adc6880c9b8bce12063ddc8c35d11e4892db0ebc2db81eb624f0b965dc51f3c0251b
SHA1 hash: cf44d05acc529bed4a8f835e106cfefed6c1d831
MD5 hash: 4c2e8ea625b56243d9650fbb8f6b4bc3
humanhash: fruit-maryland-connecticut-mobile
File name:PO489443.pdf.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:62'527'166 bytes
First seen:2026-09-04 12:28:36 UTC
Last seen:2026-09-04 12:28:39 UTC
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 3072:TER3VCgYrbavPGpPH4XEO7IHxwAU5dSzcrKSDpqen+kYPP2DbHREaffAW7zBKcT:q
TLSH T1CAD75B63BD6B184770FB56D941BBC2F13D11AB274CDD6C860DED241C8DC3ABDA88A942
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Magika vba
Reporter abuse_ch
Tags:js RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
149
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade repaired
Link:
https://www.filescan.io/uploads/6a9ab99f36b0b0d7b0135548/reports/4a95bd3b-c0bb-4395-9143-287df4288e59/overview
Verdict:
Malicious
Labled as:
GT:JS.Loader.30
Link:
https://www.hybrid-analysis.com/sample/fd54f9b3a36484f1949a2356b1ea41e479516bc1beaab8026fecc1eab40576e0
Verdict:
Malicious
File Type:
js
First seen:
2026-09-03T12:36:00Z UTC
Last seen:
2026-09-06T03:33:00Z UTC
Hits:
~100
Detections:
Trojan.MSIL.Crypt.sb Trojan-Downloader.MSIL.Agent.c HEUR:Trojan.Script.Generic Trojan.VBS.SAgent.sb Trojan.JS.SAgent.sb HEUR:Trojan.Script.Agent.gen
Link:
https://opentip.kaspersky.com/fd54f9b3a36484f1949a2356b1ea41e479516bc1beaab8026fecc1eab40576e0/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/1968608
Signature
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Creates processes via WMI
Detected large data written to user environment variables, potentially indicating payload staging for fileless execution
Found malware configuration
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Potential PowerShell Command Line Obfuscation
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
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
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)
Wscript starts Powershell (via cmd or directly)
Yara detected Powershell decode and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1968608 Sample: PO489443.pdf.js Startdate: 04/09/2026 Architecture: WINDOWS Score: 100 22 141.98.10.129 HOSTBALTICLT Lithuania 2->22 26 Suricata IDS alerts for network traffic 2->26 28 Found malware configuration 2->28 30 Malicious sample detected (through community Yara rule) 2->30 32 13 other signatures 2->32 8 wscript.exe 59 2->8         started        signatures3 process4 signatures5 34 Suspicious powershell command line found 8->34 36 Wscript starts Powershell (via cmd or directly) 8->36 38 Bypasses PowerShell execution policy 8->38 40 4 other signatures 8->40 11 powershell.exe 14 7 8->11         started        process6 dnsIp7 24 141.98.10.177, 49737, 80 HOSTBALTICLT Lithuania 11->24 14 conhost.exe 11->14         started        16 cacls.exe 11->16         started        18 cacls.exe 11->18         started        20 3 other processes 11->20 process8
Gathering data
Threat name:
Script-JS.Trojan.Ravartar
Create hunting rule
Status:
Malicious
First seen:
2026-09-04 00:59:18 UTC
File Type:
Text (JavaScript)
AV detection:
8 of 38 (21.05%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7vkptm5dmscpdfe2enlld2sb4r4vc26bx2vlqatp5ta6vnafo3qa._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery execution persistence rat
Link:
https://tria.ge/reports/260904-pn13gsxshw/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Adds Run key to start application
Executes dropped EXE
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Family: Remcos
Process spawned unexpected child process
Malware Config
C2 Extraction:
141.98.10.129:2404
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: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)

File information

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

Comments