MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ca2f6a6a991da93820340a30003176dcea7bd568175991fc5dfdb644a0d65bdc. 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: 7


Intelligence 7 IOCs YARA 1 File information Comments
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SHA256 hash: ca2f6a6a991da93820340a30003176dcea7bd568175991fc5dfdb644a0d65bdc
SHA3-384 hash: 24e40a8a8e10fcf2ea8e23a97fba987075ab13a2d7fc2637af2678c68ed7b3d47370d8b3202d9da4e2568d3ea9980153
SHA1 hash: 20b50595bf628c422cecbf39794fc8bc4864951e
MD5 hash: 134f601bdc5c10d85f866d54df4d694f
humanhash: virginia-quebec-avocado-oklahoma
File name:Sign 采购单3301-20210220006.pdf.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:19'889'742 bytes
First seen:2026-08-20 07:57:28 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 24576:9xYJ3diq3F5apy008BPB8fmgGpfx0mcz4t+/zFASqk0DbsWaxnmFT57Jtf1OcQZT:G
TLSH T12A17D55539F6B209D0F3F7893F84B4A89C8F9F11082958A6F7DA0615824D436AE770FB
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 :
1
# of downloads :
151
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/ca2f6a6a991da93820340a30003176dcea7bd568175991fc5dfdb644a0d65bdc
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1960999
Signature
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Creates processes via WMI
Delayed program exit found
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
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Drops script at startup location
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: 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
System process connects to network (likely due to code injection or exploit)
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 Powershell decode and execute
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1960999 Sample: Sign #U91c7#U8d2d#U53553301... Startdate: 20/08/2026 Architecture: WINDOWS Score: 100 34 bokiass.noip.at 2->34 36 www.google.com 2->36 38 10 other IPs or domains 2->38 46 Suricata IDS alerts for network traffic 2->46 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 14 other signatures 2->52 8 wscript.exe 1 2->8         started        10 wscript.exe 38 3 2->10         started        signatures3 process4 file5 14 powershell.exe 14 7 8->14         started        18 powershell.exe 8->18         started        30 Sign #U91c7#U8d2d#....js:Zone.Identifier, ASCII 10->30 dropped 32 Sign #U91c7#U8d2d#...-20210220006.pdf.js, Unicode 10->32 dropped 62 Suspicious powershell command line found 10->62 64 Wscript starts Powershell (via cmd or directly) 10->64 66 Drops script or batch files to the startup folder 10->66 68 5 other signatures 10->68 signatures6 process7 dnsIp8 44 cloudinary.map.fastly.net 151.101.1.137, 443, 49740, 49743 FASTLY-FastlyIncUS Canada 14->44 70 Writes to foreign memory regions 14->70 72 Injects a PE file into a foreign processes 14->72 20 svchost.exe 2 6 14->20         started        24 conhost.exe 14->24         started        26 svchost.exe 18->26         started        28 conhost.exe 18->28         started        signatures9 process10 dnsIp11 40 bokiass.noip.at 89.106.83.41, 49741, 55550 HOSTERAM Germany 20->40 42 geoplugin.net 178.237.33.50, 49742, 80 ATOM86-ASATOM86NL Netherlands 20->42 54 System process connects to network (likely due to code injection or exploit) 20->54 56 Detected Remcos RAT 20->56 58 Contains functionalty to change the wallpaper 20->58 60 5 other signatures 20->60 signatures12
Score:
79%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/ca2f6a6a991da93820340a30003176dcea7bd568175991fc5dfdb644a0d65bdc
Gathering data
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ca2f6a6a991da93820340a30003176dcea7bd568175991fc5dfdb644a0d65bdc/
Threat name:
Script-JS.Trojan.Ravartar
Create hunting rule
Status:
Malicious
First seen:
2026-08-20 08:28:32 UTC
File Type:
Text (VBS)
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zixwu2uzdwutqibubiyaamlw3tvhxvlic5mzd7c57w3ejigwlpoa._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:grts discovery execution persistence privilege_escalation rat
Link:
https://tria.ge/reports/260820-jt754asdqf/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Creates a file in the Startup directory
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Family: Remcos
Process spawned unexpected child process
Malware Config
C2 Extraction:
bokiass.noip.at:55550
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