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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f12f4f3fa2bca2716be80804bf35c6ef988c67af7a3a08e048ae65058833f58f. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f12f4f3fa2bca2716be80804bf35c6ef988c67af7a3a08e048ae65058833f58f
SHA3-384 hash: 5d01c723945ec3c26e49973520f1b35f4a9807736c98630e9d89739e45c8a350babe04532c5c7bfc065cf7bd4075ccbf
SHA1 hash: 877a79dc5c22bd87a384514c45f379245aecdcdf
MD5 hash: 24a551d5307706c6cd3c6f8b4eafd5da
humanhash: india-connecticut-lactose-five
File name:FedEx Shipment Documents.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:6'620'914 bytes
First seen:2026-10-09 02:57:33 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 384:rs0Rq4wXnuEFRNBILNrM2r4xXTdUnAz4u0+5jdLMkWK3W+Jauu/40y09hpkHIn5l:rs05Ulq7Yt5OzFU1i
TLSH T16A664967B6B1B99D5F6888A4D027DD22DCEDC0DB17A59F4E9BCE2A006073353231B931
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Magika txt
Reporter threatcat_ch
Tags:js RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
213
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade repaired
Link:
https://www.filescan.io/uploads/6ac858433518aec66dd3e1d9/reports/4495d822-314d-488a-98fb-c88008380fae/overview
Verdict:
Malicious
Labled as:
JS.Loader.1.Generic
Link:
https://www.hybrid-analysis.com/sample/f12f4f3fa2bca2716be80804bf35c6ef988c67af7a3a08e048ae65058833f58f
Verdict:
Malicious
File Type:
text
First seen:
2026-10-08T23:39:00Z UTC
Last seen:
2026-10-11T01:00:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/f12f4f3fa2bca2716be80804bf35c6ef988c67af7a3a08e048ae65058833f58f/results?tab=lookup
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1984624
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
Attempt to bypass Chrome Application-Bound Encryption
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
Detected Remcos RAT
Drops or copies cmd.exe with a different name (likely to bypass HIPS)
Drops script or batch files to the startup folder
Found hidden mapped module (file has been removed from disk)
Found malware configuration
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Powershell connects to network
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: Potential PowerShell Command Line Obfuscation
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Remcos
Sigma detected: Suspicious Environment Variable Has Been Registered
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)
Unusual module load detection (module proxying)
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 Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1984624 Sample: FedEx Shipment Documents.js Startdate: 09/10/2026 Architecture: WINDOWS Score: 100 54 ficus.in 2->54 64 Suricata IDS alerts for network traffic 2->64 66 Found malware configuration 2->66 68 Malicious sample detected (through community Yara rule) 2->68 70 15 other signatures 2->70 9 powershell.exe 14 7 2->9         started        13 wscript.exe 8 3 2->13         started        16 wscript.exe 1 2->16         started        signatures3 process4 dnsIp5 60 ficus.in 162.251.80.25, 443, 49741, 49745 UNIFIEDLAYER-AS-1-UnifiedLayerUS United States 9->60 88 Writes to foreign memory regions 9->88 90 Allocates memory in foreign processes 9->90 92 Modifies the context of a thread in another process (thread injection) 9->92 94 Injects a PE file into a foreign processes 9->94 18 cmd.exe 5 10 9->18         started        23 conhost.exe 9->23         started        50 FedEx Shipment Doc....js:Zone.Identifier, ASCII 13->50 dropped 52 C:\Users\user\...\FedEx Shipment Documents.js, Unicode 13->52 dropped 96 Suspicious powershell command line found 13->96 98 Wscript starts Powershell (via cmd or directly) 13->98 100 Drops script or batch files to the startup folder 13->100 102 4 other signatures 13->102 25 powershell.exe 16->25         started        file6 signatures7 process8 dnsIp9 56 46.151.182.237, 49742, 49743, 49744 GHOSTYNETWORKSUS Germany 18->56 58 127.0.0.1 unknown unknown 18->58 42 C:\Users\user\AppData\Local\Temp\THF0A5.tmp, PE32+ 18->42 dropped 44 C:\Users\user\AppData\...\cookies.sqlite-shm, data 18->44 dropped 46 C:\Users\user\AppData\...\Login Data.tmp, SQLite 18->46 dropped 48 2 other malicious files 18->48 dropped 72 Detected Remcos RAT 18->72 74 Attempt to bypass Chrome Application-Bound Encryption 18->74 76 Tries to harvest and steal browser information (history, passwords, etc) 18->76 84 5 other signatures 18->84 27 msedge.exe 7 18->27         started        29 chrome.exe 1 18->29         started        31 WerFault.exe 3 21 18->31         started        78 Writes to foreign memory regions 25->78 80 Allocates memory in foreign processes 25->80 82 Modifies the context of a thread in another process (thread injection) 25->82 86 2 other signatures 25->86 33 cmd.exe 25->33         started        36 conhost.exe 25->36         started        file10 signatures11 process12 signatures13 38 msedge.exe 27->38         started        40 conhost.exe 29->40         started        62 Tries to harvest and steal browser information (history, passwords, etc) 33->62 process14
Score:
97%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/f12f4f3fa2bca2716be80804bf35c6ef988c67af7a3a08e048ae65058833f58f
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f12f4f3fa2bca2716be80804bf35c6ef988c67af7a3a08e048ae65058833f58f/
Threat name:
Script-JS.Trojan.Multiverze
Create hunting rule
Status:
Malicious
First seen:
2026-10-09 02:52:47 UTC
File Type:
Text (JavaScript)
AV detection:
13 of 38 (34.21%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6exu6p5cxsrhc27ibacl6nog56miyz5ppi5arycivzsqlcbt6whq._file
Verdict:
malicious
Label(s):
Remcos
Create hunting rule
Link:
https://reports.threatray.com/8592cd5f-cf57-49f5-9aa2-34da47a868af
Result
Malware family:
n/a
Score:
  10/10
Tags:
discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/261009-df9h4sxwdy/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
Reads the TCP/IP host and domain name from the registry
Command and Scripting Interpreter: PowerShell
Creates a file in the Startup directory
Badlisted process makes network request
Process spawned unexpected child process
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.51
Link:
https://yomi.yoroi.company/submissions/f12f4f3fa2bca2716be80804bf35c6ef988c67af7a3a08e048ae65058833f58f

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:MULTI_Malware_PureLogsStealer_ForgeAuto_1539a493_Extrait
Create hunting rule
Author:Marjoriefort
Description:Detects PureLogsStealer (inconnu, etat extrait)
Rule name:MULTI_Malware_PureLogsStealer_ForgeAuto_236f2738_Extrait
Create hunting rule
Author:Marjoriefort
Description:Detects PureLogsStealer (inconnu, etat extrait)
Rule name:MULTI_Malware_PureLogsStealer_ForgeAuto_2eed7668_Extrait
Create hunting rule
Author:Marjoriefort
Description:Detects PureLogsStealer (inconnu, etat extrait)

File information

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

Malspam

RemcosRAT

Java Script (JS) js f12f4f3fa2bca2716be80804bf35c6ef988c67af7a3a08e048ae65058833f58f

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments