MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 c59cf133700b2304326538d8ed9a3a6cde6b30579d627e87483517dbeeb3399e. 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
| SHA256 hash: | c59cf133700b2304326538d8ed9a3a6cde6b30579d627e87483517dbeeb3399e |
|---|---|
| SHA3-384 hash: | 26c752a2f7f7884b4bbe7304ee66ff4e546bca21adbb71c30eb3fd1bb826f2db51ce9b4117aacc0ad7bfb88a728e7ace |
| SHA1 hash: | 45c8f6095c6e1fe3425dc36c169ebdff8e4b3e2d |
| MD5 hash: | 49e28958d96331a2dede6e2c9169ea9c |
| humanhash: | sink-music-steak-football |
| File name: | CopilotDrivers.js |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 1'099'392 bytes |
| First seen: | 2025-08-09 09:49:03 UTC |
| Last seen: | Never |
| File type: |  js |
| MIME type: | text/plain |
| ssdeep | 1536:nZDty35e+tgCt8BYcykej32P21UUHSDC6CR9Uz5oaH5zNj01u/C5yGa2jDSUWeSl:H |
| Threatray | 1'295 similar samples on MalwareBazaar |
| TLSH | T15C3553B3350905E2797A4BD79B5FC8CE614617268770E2F9CB23CC65869EE40E1B4B38 |
| Magika | javascript |
| Reporter |  abuse_ch |
| Tags: | js RAT RemcosRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
92
Origin country :
SEVendor Threat Intelligence
Verdict:
Malicious
Score:
94.9%
Tags:
n/a
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
anti-vm fingerprint
Verdict:
Malicious
Labled as:
SVM:TrojanDownloader/JS.MalBehav.gen
Result
Threat name:
PureLog Stealer
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
Bypasses PowerShell execution policy
Creates processes via WMI
Found Tor onion address
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 Base64 Encoded Invoke Keyword
Sigma detected: Suspicious PowerShell Parameter Substring
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript starts Powershell (via cmd or directly)
Yara detected Powershell decode and execute
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Score:
38%
Verdict:
Susipicious
File Type:
SCRIPT
Gathering data
Verdict:
Malicious
Threat:
Family.REMCOS
Threat name:
Script-JS.Backdoor.Remcos
Status:
Suspicious
First seen:
2025-08-09 09:52:31 UTC
File Type:
Text (JavaScript)
AV detection:
8 of 24 (33.33%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
remcos
Similar samples:
+ 1'285 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
10/10
Tags:
execution
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Command and Scripting Interpreter: JavaScript
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
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:
0.55
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 |
|---|---|
| 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
Delivery method
Distributed via web download
BLint
The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.
Findings
| ID | Title | Severity |
|---|---|---|
| CHECK_AUTHENTICODE | Missing Authenticode | high |
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (HIGH_ENTROPY_VA) | high |
| CHECK_NX | Missing Non-Executable Memory Protection | critical |
Reviews
| ID | Capabilities | Evidence |
|---|---|---|
| AUTH_API | Manipulates User Authorization | ADVAPI32.dll::AllocateAndInitializeSid ADVAPI32.dll::CopySid ADVAPI32.dll::FreeSid ADVAPI32.dll::GetLengthSid ADVAPI32.dll::GetTokenInformation ADVAPI32.dll::GetAce |
| COM_BASE_API | Can Download & Execute components | ole32.dll::CLSIDFromProgID ole32.dll::CoCreateInstance ole32.dll::CoCreateInstanceEx ole32.dll::CoInitializeSecurity ole32.dll::CreateStreamOnHGlobal |
| MULTIMEDIA_API | Can Play Multimedia | WINMM.dll::mciSendStringW WINMM.dll::timeGetTime WINMM.dll::waveOutSetVolume |
| SECURITY_BASE_API | Uses Security Base API | ADVAPI32.dll::AddAce ADVAPI32.dll::AdjustTokenPrivileges ADVAPI32.dll::CheckTokenMembership ADVAPI32.dll::DuplicateTokenEx ADVAPI32.dll::GetAclInformation ADVAPI32.dll::GetSecurityDescriptorDacl |
| SHELL_API | Manipulates System Shell | SHELL32.dll::ShellExecuteExW SHELL32.dll::ShellExecuteW SHELL32.dll::SHFileOperationW |
| WIN32_PROCESS_API | Can Create Process and Threads | ADVAPI32.dll::CreateProcessAsUserW KERNEL32.dll::CreateProcessW ADVAPI32.dll::CreateProcessWithLogonW KERNEL32.dll::OpenProcess ADVAPI32.dll::OpenProcessToken ADVAPI32.dll::OpenThreadToken |
| WIN_BASE_API | Uses Win Base API | KERNEL32.dll::TerminateProcess KERNEL32.dll::SetSystemPowerState KERNEL32.dll::LoadLibraryA KERNEL32.dll::LoadLibraryExW KERNEL32.dll::LoadLibraryW KERNEL32.dll::GetDriveTypeW |
| WIN_BASE_EXEC_API | Can Execute other programs | KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleCP KERNEL32.dll::GetConsoleMode |
| WIN_BASE_IO_API | Can Create Files | KERNEL32.dll::CopyFileW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateHardLinkW IPHLPAPI.DLL::IcmpCreateFile KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW |
| WIN_BASE_USER_API | Retrieves Account Information | KERNEL32.dll::GetComputerNameW ADVAPI32.dll::GetUserNameW ADVAPI32.dll::LogonUserW ADVAPI32.dll::LookupPrivilegeValueW |
| WIN_NETWORK_API | Supports Windows Networking | MPR.dll::WNetAddConnection2W MPR.dll::WNetUseConnectionW |
| WIN_REG_API | Can Manipulate Windows Registry | ADVAPI32.dll::RegConnectRegistryW ADVAPI32.dll::RegCreateKeyExW ADVAPI32.dll::RegDeleteKeyW ADVAPI32.dll::RegOpenKeyExW ADVAPI32.dll::RegQueryValueExW ADVAPI32.dll::RegSetValueExW |
| WIN_USER_API | Performs GUI Actions | USER32.dll::BlockInput USER32.dll::CloseDesktop USER32.dll::CreateMenu USER32.dll::EmptyClipboard USER32.dll::FindWindowExW USER32.dll::FindWindowW |
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