MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 257d76457e79d08f36b7dc67701ba3dc734f9ec2c71da03212305cb2394ac899. 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: 11


Intelligence 11 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 257d76457e79d08f36b7dc67701ba3dc734f9ec2c71da03212305cb2394ac899
SHA3-384 hash: a21f929dd78989656994986f81d69b0f355df11352bc2a0fa78a13b6e34cae46b92cd3b90908689f2b74ab236a5b4f08
SHA1 hash: 3093d298a4baca98218693e3ee75b2d79622bc79
MD5 hash: 3be964421259ca08b3561c12ebc7b8b9
humanhash: diet-cup-cola-video
File name:SOSTENER.bat
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:8'781 bytes
First seen:2026-03-05 19:05:37 UTC
Last seen:Never
File type:Batch (bat) bat
MIME type:text/x-msdos-batch
ssdeep 192:j6zy+E+b9/WD8Q6jOqdxJt6sEhDQ8MMccIgaNrMrfbUqp4jVPSw264DH/:j7+5JO+jNZt6suVccfadUbzYVv4Df
TLSH T1E602747CC5D2FCC0876B32C579AAFEC2004F8713AA6A2FACA5C808915F54294DB7D58D
Magika batch
Reporter abuse_ch
Tags:bat RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
106
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
SOSTENER.bat
Verdict:
Suspicious activity
Analysis date:
2026-03-05 19:07:40 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/12028903-962f-4e18-bf25-42e3aef6be85

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/55747/
Detection(s):
SecuriteInfo.com.BAT.Obfuscated.4.10003.1116.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69a9d435002d37d5c9842a9f
Tags:
ransomware phishing shell sage
Verdict:
Suspicious
Labled as:
BAT/Obfuscated.AZ trojan
Link:
https://www.hybrid-analysis.com/sample/257d76457e79d08f36b7dc67701ba3dc734f9ec2c71da03212305cb2394ac899
Verdict:
Malicious
File Type:
unix shell
Detections:
Trojan-Downloader.PowerShell.NanoShield.sb PDM:Trojan.Win32.Generic HEUR:Trojan.BAT.Alien.gen
Link:
https://opentip.kaspersky.com/257d76457e79d08f36b7dc67701ba3dc734f9ec2c71da03212305cb2394ac899/results?tab=lookup
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1879207
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
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
Detected Remcos RAT
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Injects a PE file into a foreign processes
Installs a global keyboard hook
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: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Powershell Decrypt And Execute Base64 Data
Sigma detected: Remcos
Sigma detected: Suspicious PowerShell IEX Execution Patterns
Suricata IDS alerts for network traffic
Suspicious powershell command line found
Unusual module load detection (module proxying)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected MSIL Injector
Yara detected Powershell decode and execute
Yara detected Powershell download and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1879207 Sample: SOSTENER.bat Startdate: 05/03/2026 Architecture: WINDOWS Score: 100 36 oficialrem.duckdns.org 2->36 38 yaso.su 2->38 40 9 other IPs or domains 2->40 48 Suricata IDS alerts for network traffic 2->48 50 Found malware configuration 2->50 52 Malicious sample detected (through community Yara rule) 2->52 56 14 other signatures 2->56 9 cmd.exe 1 2->9         started        signatures3 54 Uses dynamic DNS services 36->54 process4 signatures5 66 Suspicious powershell command line found 9->66 12 powershell.exe 12 9->12         started        15 conhost.exe 9->15         started        process6 signatures7 68 Suspicious powershell command line found 12->68 70 Found suspicious powershell code related to unpacking or dynamic code loading 12->70 17 powershell.exe 14 15 12->17         started        process8 dnsIp9 30 pastefy.app 188.245.199.145, 443, 49694 PARSONLINETehran-IRANIR Iran (ISLAMIC Republic Of) 17->30 32 gitlab.com 172.65.251.78, 443, 49695 CLOUDFLARENETUS United States 17->32 34 yaso.su 172.67.213.5, 443, 49693 CLOUDFLARENETUS United States 17->34 44 Writes to foreign memory regions 17->44 46 Injects a PE file into a foreign processes 17->46 21 MSBuild.exe 4 2 17->21         started        26 conhost.exe 17->26         started        signatures10 process11 dnsIp12 42 oficialrem.duckdns.org 186.169.75.221, 49696, 5000 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 21->42 28 C:\ProgramData\remcos\logs.dat, data 21->28 dropped 58 Contains functionality to bypass UAC (CMSTPLUA) 21->58 60 Detected Remcos RAT 21->60 62 Contains functionalty to change the wallpaper 21->62 64 5 other signatures 21->64 file13 signatures14
Score:
97%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/257d76457e79d08f36b7dc67701ba3dc734f9ec2c71da03212305cb2394ac899
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/257d76457e79d08f36b7dc67701ba3dc734f9ec2c71da03212305cb2394ac899/
Verdict:
Malicious
Threat:
Trojan-Downloader.PowerShell.NanoShield
Link:
https://tip.neiki.dev/file/257d76457e79d08f36b7dc67701ba3dc734f9ec2c71da03212305cb2394ac899
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ev6xmrl6phii6nvx3rtxag5d3rzu7hwcy4o2amqsgboleokkzcmq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost defense_evasion discovery execution rat
Link:
https://tria.ge/reports/260305-xr9g2aaw9w/
Behaviour
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Remcos
Remcos family
Malware Config
C2 Extraction:
oficialrem.duckdns.org:5000
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.

Web download

RemcosRAT

Batch (bat) bat 257d76457e79d08f36b7dc67701ba3dc734f9ec2c71da03212305cb2394ac899

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3787543/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/55747/
  
URLhaus
https://urlhaus.abuse.ch/url/3786650/

Comments