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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b77480a82345142a84cefc317db53e3c008de0f75c8044cb536a7a266badb28d. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments

SHA256 hash: b77480a82345142a84cefc317db53e3c008de0f75c8044cb536a7a266badb28d
SHA3-384 hash: 5f9ead24339bf2e85981f27b9ff120229c51a5c58ab72a5deeeb45201466413e8d2420770334a772d00d4cc62361bedb
SHA1 hash: 6315468fa43367f9039c97ce9ec6b0ddcb2ad3f5
MD5 hash: 2349f91c150b1597e8d0c607f0af2e8b
humanhash: princess-fourteen-sixteen-nineteen
File name:Hf9H6D3HegA7i07.exe
Download: download sample
Signature RemcosRAT
File size:1'510'912 bytes
First seen:2026-08-31 09:29:32 UTC
Last seen:2026-08-31 10:23:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 24576:0meUNuA6gK0jVSlpJt0autFioSo5alEqYA0yFfP3789rFrTR+rThKqWZ38I87cJ/:HeUggK+u0FSo5zy0yFfP3khmF7cJt3vu
TLSH T155651264234DCA02C5A74BF01D71D6B527A88F98E511D3039EFABEEFB929B197C50243
TrID 39.0% (.EXE) Win64 Executable (generic) (6522/11/2)
12.4% (.EXE) Win16/32 Executable Delphi generic (2072/23)
12.3% (.ICL) Windows Icons Library (generic) (2059/9)
12.1% (.EXE) OS/2 Executable (generic) (2029/13)
11.9% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence


File Origin
# of uploads :
3
# of downloads :
165
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Malware family:
ID:
1
File name:
xls
Verdict:
Malicious activity
Analysis date:
2026-08-31 09:52:35 UTC
Tags:
macros macros-on-open discord loader remcos rat netreactor

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Setting a keyboard event handler
DNS request
Connection attempt
Blocking the Windows Defender launch
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-08-31T05:38:00Z UTC
Last seen:
2026-09-01T18:03:00Z UTC
Hits:
~10
Result
Threat name:
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Detected Remcos RAT
Found malware configuration
Found stalling execution ending in API Sleep call
Injects a PE file into a foreign processes
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Unusual module load detection (module proxying)
Uses dynamic DNS services
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.46 Win 64 Exe x64
Threat name:
Win64.Backdoor.FormBook
Status:
Malicious
First seen:
2026-08-31 08:25:47 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
8
AV detection:
22 of 37 (59.46%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos botnet:remotehost evasion execution rat trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Family: Remcos
Modifies Windows Defender DisableAntiSpyware settings
Malware Config
C2 Extraction:
ruffyayeaye.ddns.net:2404
Unpacked files
SH256 hash:
b77480a82345142a84cefc317db53e3c008de0f75c8044cb536a7a266badb28d
MD5 hash:
2349f91c150b1597e8d0c607f0af2e8b
SHA1 hash:
6315468fa43367f9039c97ce9ec6b0ddcb2ad3f5
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:NET
Author:malware-lu
Rule name:pe_no_import_table
Description:Detect pe file that no import table

File information


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

Web download

RemcosRAT

Executable exe b77480a82345142a84cefc317db53e3c008de0f75c8044cb536a7a266badb28d

(this sample)

  
Delivery method
Distributed via web download

Comments