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Windows Analysis Report X5lLjSzDd8.exe
Overview
General Information
| Sample Name: | X5lLjSzDd8.exe |
| Analysis ID: | 524289 |
| MD5: | 743f8fec87ebf7c5d6b392261ec3988f |
| SHA1: | 1bc862eecde55f2c1de69bc9e3fdd7468de373d0 |
| SHA256: | c9f18cc71c7a1fa61d43a32dfb858f9aa247324a188f8182981b853266d3b1c7 |
| Tags: | DofoilexeSmokeLoader |
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Most interesting Screenshot:  |
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Detection
RedLine SmokeLoader
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Yara detected RedLine Stealer
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Yara detected SmokeLoader
System process connects to network (likely due to code injection or exploit)
Detected unpacking (changes PE section rights)
Antivirus detection for URL or domain
Antivirus detection for dropped file
Multi AV Scanner detection for submitted file
Benign windows process drops PE files
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Maps a DLL or memory area into another process
Tries to detect sandboxes and other dynamic analysis tools (window names)
Query firmware table information (likely to detect VMs)
Tries to detect sandboxes / dynamic malware analysis system (registry check)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Machine Learning detection for sample
May check the online IP address of the machine
Injects a PE file into a foreign processes
.NET source code contains very large array initializations
Contains functionality to inject code into remote processes
Deletes itself after installation
Creates a thread in another existing process (thread injection)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Found many strings related to Crypto-Wallets (likely being stolen)
Checks if the current machine is a virtual machine (disk enumeration)
PE file contains section with special chars
Hides threads from debuggers
.NET source code references suspicious native API functions
Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation))
.NET source code contains method to dynamically call methods (often used by packers)
PE file has nameless sections
Machine Learning detection for dropped file
Antivirus or Machine Learning detection for unpacked file
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality to dynamically determine API calls
HTTP GET or POST without a user agent
Downloads executable code via HTTP
Uses insecure TLS / SSL version for HTTPS connection
Contains long sleeps (>= 3 min)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Drops files with a non-matching file extension (content does not match file extension)
Drops PE files
Tries to load missing DLLs
Contains functionality to read the PEB
Uses a known web browser user agent for HTTP communication
Checks if the current process is being debugged
Binary contains a suspicious time stamp
Creates a process in suspended mode (likely to inject code)
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Yara signature match
Contains functionality to check if a debugger is running (IsDebuggerPresent)
PE file contains sections with non-standard names
Yara detected Credential Stealer
Contains functionality to call native functions
Entry point lies outside standard sections
Enables debug privileges
Creates a DirectInput object (often for capturing keystrokes)
AV process strings found (often used to terminate AV products)
Detected TCP or UDP traffic on non-standard ports
Contains capabilities to detect virtual machines
Social media urls found in memory data
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Classification
AV Detection: |
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| Antivirus detection for URL or domain |
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| Antivirus detection for dropped file |
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| Multi AV Scanner detection for submitted file |
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| Multi AV Scanner detection for domain / URL |
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| Multi AV Scanner detection for dropped file |
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Metadefender: |
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| Machine Learning detection for sample |
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| Machine Learning detection for dropped file |
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| Antivirus or Machine Learning detection for unpacked file |
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Compliance: |
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| Uses insecure TLS / SSL version for HTTPS connection |
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| Uses 32bit PE files |
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Networking: |
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| Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) |
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| System process connects to network (likely due to code injection or exploit) |
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Network Connect: |
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| May check the online IP address of the machine |
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| HTTP GET or POST without a user agent |
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| Downloads executable code via HTTP |
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