Loading... Additional Content is being loaded
Windows
Analysis Report
LisectAVT_2403002A_473.exe
Overview
General Information
| Sample name: | LisectAVT_2403002A_473.exe |
| Analysis ID: | 1482220 |
| MD5: | f256345478d00e975e7c0987fa05f63e |
| SHA1: | 005b5c18852675ced842632957199d6d47128ade |
| SHA256: | 3d72496f46a130331bc6e35d4211c7a9d6c31770affba0f99ebbe6abf6cd42d2 |
| Tags: | AsyncRATexe |
| Infos: |   |
 |
|
Detection
Njrat, XWorm
| Score: | 90 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Found malware configuration
Malicious sample detected (through community Yara rule)
Yara detected MSILDownloaderGeneric
Yara detected Njrat
Yara detected XWorm
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Drops PE files to the user root directory
Injects code into the Windows Explorer (explorer.exe)
Machine Learning detection for dropped file
Machine Learning detection for sample
Modifies the windows firewall
Opens the same file many times (likely Sandbox evasion)
Performs DNS queries to domains with low reputation
Sample uses string decryption to hide its real strings
Sigma detected: Suspicious File Creation In Uncommon AppData Folder
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses netsh to modify the Windows network and firewall settings
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Generic Downloader
Abnormal high CPU Usage
Allocates memory with a write watch (potentially for evading sandboxes)
Checks if the current process is being debugged
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to detect virtual machines (SLDT)
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Contains functionality to query CPU information (cpuid)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Creates a start menu entry (Start Menu\Programs\Startup)
Detected potential crypto function
Drops PE files
Drops PE files to the user directory
Enables debug privileges
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 large amount of non-executed APIs
Found potential string decryption / allocating functions
HTTP GET or POST without a user agent
May infect USB drives
May sleep (evasive loops) to hinder dynamic analysis
Queries sensitive Operating System Information (via WMI, Win32_ComputerSystem, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Sigma detected: CurrentVersion Autorun Keys Modification
Sigma detected: Explorer Process Tree Break
Sigma detected: Startup Folder File Write
Sigma detected: Suspicious Schtasks From Env Var Folder
Sigma detected: Use Short Name Path in Command Line
Stores files to the Windows start menu directory
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
| Name | Description | Attribution | Blogpost URLs | Link |
|---|---|---|---|---|
| NjRAT | RedPacket Security describes NJRat as "a remote access trojan (RAT) has capabilities to log keystrokes, access the victim's camera, steal credentials stored in browsers, open a reverse shell, upload/download files, view the victim's desktop, perform process, file, and registry manipulations, and capabilities to let the attacker update, uninstall, restart, close, disconnect the RAT and rename its campaign ID. Through the Command & Control (CnC) server software, the attacker has capabilities to create and configure the malware to spread through USB drives."It is supposedly popular with actors in the Middle East. Similar to other RATs, many leaked builders may be backdoored. |
|
|
| Name | Description | Attribution | Blogpost URLs | Link |
|---|---|---|---|---|
| XWorm | Malware with wide range of capabilities ranging from RAT to ransomware. | No Attribution |
|
AV Detection |
  |
|---|
| Source: |
Avira: |
||
| Source: |
Avira: |
||
| Source: |
Avira: |
||
| Source: |
Avira: |
||
| Source: |
Malware Configuration Extractor: |
||
| Source: |
Malware Configuration Extractor: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
File source: |
||
| Source: |
Joe Sandbox ML: |
||
| Source: |
Joe Sandbox ML: |
||
| Source: |
Joe Sandbox ML: |
||
| Source: |
Joe Sandbox ML: |
||
| Source: |
String decryptor: |
||
| Source: |
String decryptor: |
||
| Source: |
String decryptor: |
||
| Source: |
String decryptor: |
||
| Source: |
String decryptor: |
||
| Source: |
Static PE information: |
||
| Source: |
Window detected: | ||