Loading... Additional Content is being loaded
Windows
Analysis Report
saiya.exe
Overview
General Information
| Sample name: | saiya.exe |
| Analysis ID: | 1562138 |
| MD5: | e73e1377e78c7bac85090c9c3cec2462 |
| SHA1: | 3edaf9d8a8fc26196280a94a8eed77449a632fc3 |
| SHA256: | 4d128967e50d20458a8a9022153ef7941b3e3f116cfdb4f6e611b983adf895b4 |
| Tags: | exemalwaretrojanuser-Joker |
| Infos: |   |
 |
|
Detection
AsyncRAT, XWorm
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Sigma detected: Schedule system process
Suricata IDS alerts for network traffic
System process connects to network (likely due to code injection or exploit)
Yara detected AsyncRAT
Yara detected XWorm
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Connects to a pastebin service (likely for C&C)
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Drops PE files with benign system names
Machine Learning detection for sample
Protects its processes via BreakOnTermination flag
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: System File Execution Location Anomaly
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Generic Downloader
AV process strings found (often used to terminate AV products)
Abnormal high CPU Usage
Allocates memory with a write watch (potentially for evading sandboxes)
Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)
Checks if the current process is being debugged
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to query CPU information (cpuid)
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
Drops PE files
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 dropped PE file which has not been started or loaded
Found evasive API chain (may stop execution after checking a module file name)
Found evasive API chain checking for process token information
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 check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
One or more processes crash
PE file contains sections with non-standard names
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: Suspicious Add Scheduled Task Parent
Sigma detected: Suspicious Schtasks From Env Var Folder
Sigma detected: Uncommon Svchost Parent Process
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
| Name | Description | Attribution | Blogpost URLs | Link |
|---|---|---|---|---|
| AsyncRAT | AsyncRAT is a Remote Access Tool (RAT) designed to remotely monitor and control other computers through a secure encrypted connection. It is an open source remote administration tool, however, it could also be used maliciously because it provides functionality such as keylogger, remote desktop control, and many other functions that may cause harm to the victims computer. In addition, AsyncRAT can be delivered via various methods such as spear-phishing, malvertising, exploit kit and other techniques. | No Attribution |
|
| 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: |
Malware Configuration Extractor: |
||
| Source: |
ReversingLabs: |
||
| Source: |
ReversingLabs: |
||
| Source: |
Integrated Neural Analysis Model: |
||
| Source: |
Joe Sandbox ML: |
||
| Source: |
String decryptor: |
||
| Source: |
String decryptor: |
||
| Source: |
String decryptor: |
||
| Source: |
String decryptor: |
||
| Source: |
String decryptor: |
||
| Source: |
String decryptor: |
||
| Source: |
String decryptor: |
||
| Source: |
String decryptor: |
||
| Source: |
Static PE information: |
||
| Source: |
Static PE information: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: |
||
| Source: |
Binary string: | ||