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Windows
Analysis Report
710_SO_TO_CHITTAGONG1_CFS-SOE777_PKCGP2410001-AMD-8248-HBL_DRAFT.scr.exe
Overview
General Information
| Sample name: | 710_SO_TO_CHITTAGONG1_CFS-SOE777_PKCGP2410001-AMD-8248-HBL_DRAFT.scr.exe |
| Analysis ID: | 1465946 |
| MD5: | 4ee08be6bfe40c3fb09e904c35299000 |
| SHA1: | 9d8e0ebbaaa3598ed03f231267103f24f6c0dd85 |
| SHA256: | e38d2d9b8b63dc2163897bfa2a8401a57483d39d0dace276f360be62cd938852 |
| Tags: | exe |
| Infos: |   |
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Detection
DBatLoader, Remcos
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Detected unpacking (changes PE section rights)
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: TrustedPath UAC Bypass Pattern
UAC bypass detected (Fodhelper)
Yara detected DBatLoader
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
AI detected suspicious sample
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to inject code into remote processes
Contains functionality to register a low level keyboard hook
Contains functionalty to change the wallpaper
Delayed program exit found
Drops PE files to the user root directory
Drops PE files with a suspicious file extension
Drops executables to the windows directory (C:\Windows) and starts them
Drops or copies cmd.exe with a different name (likely to bypass HIPS)
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
Opens network shares
Powershell is started from unusual location (likely to bypass HIPS)
Reads the Security eventlog
Reads the System eventlog
Sample uses process hollowing technique
Sigma detected: Execution from Suspicious Folder
Sigma detected: New RUN Key Pointing to Suspicious Folder
Sigma detected: Parent in Public Folder Suspicious Process
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
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 ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Writes to foreign memory regions
Yara detected WebBrowserPassView password recovery tool
AV process strings found (often used to terminate AV products)
Allocates memory with a write watch (potentially for evading sandboxes)
Binary contains a suspicious time stamp
Checks if the current process is being debugged
Contains functionality for read data from the clipboard
Contains functionality to call native functions
Contains functionality to check if a connection to the internet is available
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to check the parent process ID (often done to detect debuggers and analysis systems)
Contains functionality to communicate with device drivers
Contains functionality to dynamically determine API calls
Contains functionality to enumerate running services
Contains functionality to launch a process as a different user
Contains functionality to modify clipboard data
Contains functionality to query CPU information (cpuid)
Contains functionality to query locales information (e.g. system language)
Contains functionality to read the PEB
Contains functionality to read the clipboard data
Contains functionality to retrieve information about pressed keystrokes
Contains functionality to shutdown / reboot the system
Contains functionality to simulate mouse events
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)
Creates files inside the system directory
Deletes files inside the Windows folder
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Dropped file seen in connection with other malware
Drops PE files
Drops PE files to the user directory
Drops PE files to the windows directory (C:\Windows)
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 decision node followed by non-executed suspicious APIs
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
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
PE file contains sections with non-standard names
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: Execution of Suspicious File Type Extension
Sigma detected: PSScriptPolicyTest Creation By Uncommon Process
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicious Reg Add Open Command
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)
Uses taskkill to terminate processes
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara detected Keylogger Generic
Yara signature match
Classification
| Name | Description | Attribution | Blogpost URLs | Link |
|---|---|---|---|---|
| DBatLoader | This Delphi loader misuses Cloud storage services, such as Google Drive to download the Delphi stager component. The Delphi stager has the actual payload embedded as a resource and starts it. | No Attribution |
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| 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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Code function: |
0_2_27973837 | |
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Code function: |
36_2_00404423 | |
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Binary or memory string: |
memstr_358adb91-9 | |
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