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Windows
Analysis Report
DHL_Awb_Shipping_Invoice_doc_010720257820020031808174CN1800301072025.bat.exe
Overview
General Information
Detection
Remcos, GuLoader
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Detected unpacking (changes PE section rights)
Found malware configuration
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Yara detected GuLoader
Yara detected Remcos RAT
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
Deletes itself after installation
Initial sample is a PE file and has a suspicious name
Installs a global keyboard hook
Machine Learning detection for sample
Maps a DLL or memory area into another process
Sample has a suspicious name (potential lure to open the executable)
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Switches to a custom stack to bypass stack traces
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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
Contains functionality to shutdown / reboot the system
Creates a process in suspended mode (likely to inject code)
Creates files inside the system directory
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Drops PE files
Enables debug privileges
Extensive use of GetProcAddress (often used to hide API calls)
Found WSH timer for Javascript or VBS script (likely evasive script)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found dropped PE file which has not been started or loaded
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
JA3 SSL client fingerprint 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
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Sleep loop found (likely to delay execution)
Suricata IDS alerts with low severity for network traffic
Uses 32bit PE files
Uses Microsoft's Enhanced Cryptographic Provider
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Classification
- System is w10x64native
- DHL_Awb_Shipping_Invoice_doc_010720257820020031808174CN1800301072025.bat.exe (PID: 7816 cmdline:
"C:\Users\ user\Deskt op\DHL_Awb _Shipping_ Invoice_do c_01072025 7820020031 808174CN18 0030107202 5.bat.exe" MD5: 3AAA7D691A22EC1B7F9D03D63C7017A3) - DHL_Awb_Shipping_Invoice_doc_010720257820020031808174CN1800301072025.bat.exe (PID: 8060 cmdline:
"C:\Users\ user\Deskt op\DHL_Awb _Shipping_ Invoice_do c_01072025 7820020031 808174CN18 0030107202 5.bat.exe" MD5: 3AAA7D691A22EC1B7F9D03D63C7017A3) - DHL_Awb_Shipping_Invoice_doc_010720257820020031808174CN1800301072025.bat.exe (PID: 3592 cmdline:
C:\Users\u ser\Deskto p\DHL_Awb_ Shipping_I nvoice_doc _010720257 8200200318 08174CN180 0301072025 .bat.exe / stext "C:\ Users\user \AppData\L ocal\Temp\ gjyjxxzbuf aiuhfuyvqh llqm" MD5: 3AAA7D691A22EC1B7F9D03D63C7017A3) - DHL_Awb_Shipping_Invoice_doc_010720257820020031808174CN1800301072025.bat.exe (PID: 4904 cmdline:
C:\Users\u ser\Deskto p\DHL_Awb_ Shipping_I nvoice_doc _010720257 8200200318 08174CN180 0301072025 .bat.exe / stext "C:\ Users\user \AppData\L ocal\Temp\ jpzokfvjc" MD5: 3AAA7D691A22EC1B7F9D03D63C7017A3) - DHL_Awb_Shipping_Invoice_doc_010720257820020031808174CN1800301072025.bat.exe (PID: 4616 cmdline:
C:\Users\u ser\Deskto p\DHL_Awb_ Shipping_I nvoice_doc _010720257 8200200318 08174CN180 0301072025 .bat.exe / stext "C:\ Users\user \AppData\L ocal\Temp\ zbiszrwxdw iv" MD5: 3AAA7D691A22EC1B7F9D03D63C7017A3) - wscript.exe (PID: 2656 cmdline:
"C:\Window s\System32 \WScript.e xe" "C:\Us ers\user\A ppData\Loc al\Temp\cj jbdefodddn goym.vbs" MD5: 4D780D8F77047EE1C65F747D9F63A1FE)
- cleanup
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. |
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
CloudEyE, GuLoader | CloudEyE (initially named GuLoader) is a small VB5/6 downloader. It typically downloads RATs/Stealers, such as Agent Tesla, Arkei/Vidar, Formbook, Lokibot, Netwire and Remcos, often but not always from Google Drive. The downloaded payload is xored. | No Attribution |
{"Host:Port:Password": ["wealthabundance01.duckdns.org:3981:1", "wealthabundance01.duckdns.org:3980:0", "wealthabundance002..duckdns.org:3980:0"], "Assigned name": "WEALTHBILLIONAIRES", "Connect interval": "1", "Install flag": "Disable", "Setup HKCU\\Run": "Enable", "Setup HKLM\\Run": "Enable", "Install path": "Application path", "Copy file": "remcos.exe", "Startup value": "Disable", "Hide file": "Disable", "Mutex": "wealthymannow-3N54OZ", "Keylog flag": "1", "Keylog path": "Application path", "Keylog file": "logs.dat", "Keylog crypt": "Disable", "Hide keylog file": "Disable", "Screenshot flag": "Disable", "Screenshot time": "1", "Take Screenshot option": "Disable", "Take screenshot title": "", "Take screenshot time": "5", "Screenshot path": "AppData", "Screenshot file": "Screenshots", "Screenshot crypt": "Disable", "Mouse option": "Disable", "Delete file": "Disable", "Audio record time": "5", "Audio folder": "MicRecords", "Connect delay": "0", "Copy folder": "Remcos", "Keylog folder": "remcos"}
Source | Rule | Description | Author | Strings |
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JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
Click to see the 13 entries |
System Summary |
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Source: | Author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems), Max Altgelt (Nextron Systems), Tim Shelton: |
Source: | Author: Margaritis Dimitrios (idea), Florian Roth (Nextron Systems), oscd.community: |
Source: | Author: Michael Haag: |
Stealing of Sensitive Information |
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Source: | Author: Joe Security: |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-01-08T13:32:18.725144+0100 | 2032776 | 1 | Malware Command and Control Activity Detected | 192.168.11.20 | 49760 | 43.226.229.207 | 3980 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-01-08T13:32:19.273911+0100 | 2032777 | 1 | Malware Command and Control Activity Detected | 43.226.229.207 | 3980 | 192.168.11.20 | 49760 | TCP |
2025-01-08T13:34:19.590681+0100 | 2032777 | 1 | Malware Command and Control Activity Detected | 43.226.229.207 | 3980 | 192.168.11.20 | 49760 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-01-08T13:32:20.385130+0100 | 2803304 | 3 | Unknown Traffic | 192.168.11.20 | 49762 | 178.237.33.50 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-01-08T13:31:08.105379+0100 | 2803270 | 2 | Potentially Bad Traffic | 192.168.11.20 | 49755 | 109.99.162.14 | 443 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Malware Configuration Extractor: |
Source: | Virustotal: | Perma Link | ||
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Source: | Joe Sandbox ML: |
Source: | Code function: | 3_2_00404423 |
Source: | Static PE information: |
Source: | HTTPS traffic detected: |
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Source: | Code function: | 0_2_00405861 | |
Source: | Code function: | 0_2_0040639C | |
Source: | Code function: | 0_2_004026F8 | |
Source: | Code function: | 3_2_0040AE51 | |
Source: | Code function: | 4_2_00407EF8 | |
Source: | Code function: | 5_2_00407898 |
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
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Source: | File opened: | Jump to behavior | ||
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Networking |
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Source: | UDP traffic detected without corresponding DNS query: | ||
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Source: | String found in binary or memory: |