MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a9aa3dcfe7919c6a925d9e533e4c8a9db86e4f05427635384bf734adaa250ed. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8a9aa3dcfe7919c6a925d9e533e4c8a9db86e4f05427635384bf734adaa250ed
SHA3-384 hash: e271a2212af4e10633fe3cb8f6bc5b0a770539b62776dbfb42c9c894d759245555e2aca51dfb8e445fca8d92dc6f21b9
SHA1 hash: b94388898f4a5fc7c3c2038ecffe4ad8c7a925c8
MD5 hash: 58133a5275783e42279ce2bed419ad7b
humanhash: earth-apart-artist-sink
File name:FedEx_Doc.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:26'009'794 bytes
First seen:2026-08-06 08:34:04 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 1536:12l78uj14+44Hi1evoFIor0gUsW9nPjAkA4ZQ08rYWi1ZWZV1FgRR/AiVsnWkzgq:Zszg
TLSH T113476F864CCB0AD9C28A766CE4B05AB280C79C4D17FED3ED2B119E8F25DFD6114718B9
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Magika autohotkey
Reporter abuse_ch
Tags:FedEx js RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
150
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/6a74475eca537a880980a899/reports/d9c7ecee-332a-48cf-880a-f20eced56875/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/8a9aa3dcfe7919c6a925d9e533e4c8a9db86e4f05427635384bf734adaa250ed
Verdict:
Malicious
File Type:
js
First seen:
2026-08-06T00:32:00Z UTC
Last seen:
2026-08-08T06:07:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/8a9aa3dcfe7919c6a925d9e533e4c8a9db86e4f05427635384bf734adaa250ed/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/1953199
Signature
Attempt to bypass Chrome Application-Bound Encryption
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject threads in other processes
Contains functionality to steal Internet Explorer form passwords
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 evasive API chain checking for user administrative privileges
Found hidden mapped module (file has been removed from disk)
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)
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
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 detect sandboxes / dynamic malware analysis system (Installed program check)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file registry)
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: 1953199 Sample: FedEx_Doc.js Startdate: 06/08/2026 Architecture: WINDOWS Score: 100 55 resc.cloudinary.com.cdn.cloudflare.net 2->55 57 res.cloudinary.com 2->57 69 Suricata IDS alerts for network traffic 2->69 71 Found malware configuration 2->71 73 Malicious sample detected (through community Yara rule) 2->73 75 14 other signatures 2->75 10 wscript.exe 1 2->10         started        12 wscript.exe 27 3 2->12         started        signatures3 process4 file5 16 powershell.exe 14 7 10->16         started        20 powershell.exe 10->20         started        49 C:\Users\...\FedEx_Doc.js:Zone.Identifier, ASCII 12->49 dropped 51 C:\Users\user\AppData\...\FedEx_Doc.js, Unicode 12->51 dropped 85 Suspicious powershell command line found 12->85 87 Wscript starts Powershell (via cmd or directly) 12->87 89 Drops script or batch files to the startup folder 12->89 91 5 other signatures 12->91 signatures6 process7 dnsIp8 53 resc.cloudinary.com.cdn.cloudflare.net 104.16.79.6, 443, 49719, 49725 CLOUDFLARENET-CloudflareIncUS Canada 16->53 63 Writes to foreign memory regions 16->63 65 Modifies the context of a thread in another process (thread injection) 16->65 67 Injects a PE file into a foreign processes 16->67 22 appidtel.exe 5 10 16->22         started        27 conhost.exe 16->27         started        29 appidtel.exe 20->29         started        31 conhost.exe 20->31         started        signatures9 process10 dnsIp11 59 46.151.182.38, 49720, 49721, 49722 GHOSTYNETWORKSUS France 22->59 61 127.0.0.1 unknown unknown 22->61 41 C:\Users\user\AppData\...\cookies.sqlite-shm, data 22->41 dropped 43 C:\Users\user\AppData\...\Login Data.tmp, SQLite 22->43 dropped 45 C:\Users\user\AppData\...\Login Data.tmp, SQLite 22->45 dropped 47 2 other files (1 malicious) 22->47 dropped 77 Contains functionality to bypass UAC (CMSTPLUA) 22->77 79 Detected Remcos RAT 22->79 81 Attempt to bypass Chrome Application-Bound Encryption 22->81 83 13 other signatures 22->83 33 msedge.exe 7 22->33         started        35 chrome.exe 1 22->35         started        file12 signatures13 process14 process15 37 msedge.exe 33->37         started        39 conhost.exe 35->39         started       
Verdict:
Malware
YARA:
1 match(es)
Tags:
DeObfuscated PowerShell T1027 T1059.001
Link:
https://app.malva.re/file/58133a5275783e42279ce2bed419ad7b
Gathering data
Threat name:
Script-JS.Trojan.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2026-08-06 08:37:35 UTC
File Type:
Text (JavaScript)
AV detection:
8 of 24 (33.33%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rknkhxh6pem4nkjf3hsthzgivhnynzhqkqtwgu4ex5zuvwvckdwq._file
Verdict:
malicious
Label(s):
Remcos
Create hunting rule
Link:
https://reports.threatray.com/f763e1e2-15ab-438c-89af-fddaada65d42
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remote collection credential_access discovery execution persistence privilege_escalation rat stealer
Link:
https://tria.ge/reports/260806-khbs7axbnh/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
outlook_office_path
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Time Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Creates a file in the Startup directory
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Uses browser remote debugging
Family: Remcos
Process spawned unexpected child process
Malware Config
C2 Extraction:
46.151.182.38:8080
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/8a9aa3dcfe7919c6a925d9e533e4c8a9db86e4f05427635384bf734adaa250ed

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