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Windows
Analysis Report
17334752451c3a43189360a7e5b86f13b5ea7a6044304256a8f4c49ad5d5bd4831e72ee12e792.dat-decoded.exe
Overview
General Information
| Sample name: | 17334752451c3a43189360a7e5b86f13b5ea7a6044304256a8f4c49ad5d5bd4831e72ee12e792.dat-decoded.exe |
| Analysis ID: | 1569786 |
| MD5: | 7f2ebe83b860a8de1f3ce798c79b5935 |
| SHA1: | 3fbea97a5aa637271311851fd152ee37e813c44f |
| SHA256: | fd125d03b2bc8512a9a5dcc6df9ca5045208442bc047af50b5f0a359103c1ba8 |
| Tags: | base64-decodedexeuser-abuse_ch |
| Infos: |   |
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Detection
Remcos
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Detected unpacking (changes PE section rights)
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Yara detected Remcos RAT
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Installs a global keyboard hook
Machine Learning detection for sample
Maps a DLL or memory area into another process
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Uses dynamic DNS services
Yara detected WebBrowserPassView password recovery tool
Abnormal high CPU Usage
Contains functionality for read data from the clipboard
Contains functionality to call native functions
Contains functionality to check the parent process ID (often done to detect debuggers and analysis systems)
Contains functionality to dynamically determine API calls
Contains functionality to modify clipboard data
Creates a process in suspended mode (likely to inject code)
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Enables debug privileges
Extensive use of GetProcAddress (often used to hide API calls)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found potential string decryption / allocating functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Queries the volume information (name, serial number etc) of a device
Sample file is different than original file name gathered from version info
Suricata IDS alerts with low severity for network traffic
Uses 32bit PE files
Uses Microsoft's Enhanced Cryptographic Provider
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
| Name | Description | Attribution | Blogpost URLs | Link |
|---|---|---|---|---|
| Remcos, RemcosRAT | Remcos (acronym of Remote Control & Surveillance Software) is a commercial Remote Access Tool to remotely control computers.Remcos is advertised as legitimate software which can be used for surveillance and penetration testing purposes, but has been used in numerous hacking campaigns.Remcos, once installed, opens a backdoor on the computer, granting full access to the remote user.Remcos is developed by the cybersecurity company BreakingSecurity. |
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Code function: |
5_2_00404423 | |
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Binary or memory string: |
memstr_15ef2a8b-9 | |
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Code function: |
5_2_0040AE51 | |
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6_2_00407C87 | |
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7_2_00407898 | |
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10_2_00407898 | |
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