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Windows
Analysis Report
LTEXSP 5634 HISP9005 ST MSDS DOKUME74247liniereletbrunkagerne.bat
Overview
General Information
| Sample name: | LTEXSP 5634 HISP9005 ST MSDS DOKUME74247liniereletbrunkagerne.bat |
| Analysis ID: | 1539161 |
| MD5: | 79c452316f1b510462cf29f5fbbd84ba |
| SHA1: | 2f95ab9367e8ef18427e2a8568afffbe0f197f22 |
| SHA256: | 4c697bdcbe64036ba8a79e587462960e856a37e3b8c94f9b3e7875aeb2f91959 |
| Tags: | batuser-lowmal3 |
| Infos: |   |
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Detection
Remcos, GuLoader
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Detected Remcos RAT
Early bird code injection technique detected
Found malware configuration
Malicious sample detected (through community Yara rule)
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Yara detected GuLoader
Yara detected Powershell download and execute
Yara detected Remcos RAT
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Maps a DLL or memory area into another process
Powershell creates an autostart link
Queues an APC in another process (thread injection)
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file registry)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected WebBrowserPassView password recovery tool
Contains functionality for read data from the clipboard
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to check if a debugger is running (IsDebuggerPresent)
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 query CPU information (cpuid)
Contains functionality to read the PEB
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Contains long sleeps (>= 3 min)
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 large amount of non-executed APIs
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 execution stops while process was sleeping (likely an evasion)
Sigma detected: CurrentVersion Autorun Keys Modification
Sigma detected: Direct Autorun Keys Modification
Sigma detected: Msiexec Initiated Connection
Sigma detected: Potential Persistence Attempt Via Run Keys Using Reg.EXE
Sleep loop found (likely to delay execution)
Suricata IDS alerts with low severity for network traffic
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Uses reg.exe to modify the Windows registry
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Very long command line found
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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| 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 |
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AV Detection |
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Integrated Neural Analysis Model: |
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Code function: |
9_2_21BD10F1 | |
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9_2_21BD6580 | |
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15_2_0040AE51 | |
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16_2_00407EF8 | |
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18_2_00407898 | |
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Networking |
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Network traffic detected: |
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HTTPS traffic detected: |
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Code function: |
15_2_0041183A | |
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15_2_0040987A | |
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15_2_004098E2 | |
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16_2_00406DFC | |
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16_2_00406E9F | |
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Code function: |
18_2_004068B5 | |
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Code function: |
18_2_004072B5 | |
E-Banking Fraud |
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System Summary |
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Code function: |
15_2_0040DD85 | |
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15_2_00401806 | |
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15_2_004018C0 | |
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16_2_004016FD | |
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16_2_004017B7 | |
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18_2_00402CAC | |
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18_2_00402D66 | |
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Code function: |
2_2_00007FFD3476B0F6 | |
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2_2_00007FFD3476BEA2 | |
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Code function: |
2_2_00007FFD347670F3 | |
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2_2_00007FFD34764D55 | |
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2_2_00007FFD347669CD | |
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2_2_00007FFD347626DD | |
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2_2_00007FFD34766B68 | |
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2_2_00007FFD34766BAA | |
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Code function: |
5_2_045DEDF0 | |
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5_2_045DF6C0 | |
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Code function: |
5_2_045DEAA8 | |
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Code function: |
9_2_21BE7194 | |
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9_2_21BDB5C1 | |
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Code function: |
15_2_0044B040 | |
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15_2_0043610D | |
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15_2_00447310 | |
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15_2_0044A490 | |
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15_2_0040755A | |
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15_2_0043C560 | |
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15_2_0044B610 | |
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15_2_0044D6C0 | |
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15_2_004476F0 | |
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15_2_0044B870 | |
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15_2_0044081D | |
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15_2_00414957 | |
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15_2_004079EE | |
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15_2_00407AEB | |
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15_2_0044AA80 | |
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15_2_00412AA9 | |
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15_2_00404B74 | |
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15_2_00404B03 | |
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15_2_0044BBD8 | |
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15_2_00404BE5 | |
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15_2_00404C76 | |
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15_2_00415CFE | |
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15_2_00416D72 | |
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15_2_00446D30 | |
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15_2_00406E8F | |
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16_2_00405038 | |
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16_2_0041208C | |
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16_2_0043A5AB | |
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16_2_00413631 | |
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16_2_00446690 | |
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16_2_0044A730 | |
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16_2_004398D8 | |
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16_2_004498E0 | |
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16_2_0044A886 | |
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16_2_0043DA09 | |
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16_2_00438D5E | |
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16_2_00449ED0 | |
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16_2_0041FE83 | |
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16_2_00430F54 | |
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18_2_004050C2 | |
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18_2_004014AB | |
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18_2_00405133 | |
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18_2_004051A4 | |
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18_2_00401246 | |
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18_2_0040CA46 | |
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18_2_00405235 | |
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18_2_004032C8 | |
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18_2_004222D9 | |
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18_2_00401689 | |
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Code function: |
15_2_004182CE | |
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Code function: |
18_2_00410DE1 | |
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Code function: |
15_2_00418758 | |
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Code function: |
15_2_00413D4C | |
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Code function: |
15_2_004148B6 | |
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