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Windows
Analysis Report
file.exe
Overview
General Information
| Sample name: | file.exe |
| Analysis ID: | 1522713 |
| MD5: | 76fef713102a8b0a45e7b1c1137d9538 |
| SHA1: | 6857adf997d1d683abb2403930d84ec8bfdd3916 |
| SHA256: | 13123fdce84e5020fb0cae3c641cd6fcb82320b334f6d908ee29fda40270b1c5 |
| Tags: | exeuser-jstrosch |
| Infos: |   |
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|
Detection
CryptOne, Mofksys
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Detected CryptOne packer
Detected unpacking (changes PE section rights)
Multi AV Scanner detection for submitted file
Yara detected Mofksys
Contains functionality to detect sleep reduction / modifications
Drops PE files with benign system names
Drops executables to the windows directory (C:\Windows) and starts them
Hides threads from debuggers
Injects code into the Windows Explorer (explorer.exe)
Machine Learning detection for dropped file
Machine Learning detection for sample
PE file has nameless sections
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Suspect Svchost Activity
Sigma detected: System File Execution Location Anomaly
Tries to detect sandboxes and other dynamic analysis tools (window names)
Writes to foreign memory regions
Abnormal high CPU Usage
Checks for debuggers (devices)
Contains functionality for read data from the clipboard
Contains functionality to call native functions
Contains functionality to check if a window is minimized (may be used to check if an application is visible)
Contains functionality to communicate with device drivers
Contains functionality to detect virtual machines (SGDT)
Contains functionality to modify clipboard data
Contains functionality to query locales information (e.g. system language)
Contains functionality to read the clipboard data
Contains functionality to retrieve information about pressed keystrokes
Creates a process in suspended mode (likely to inject code)
Creates files inside the system directory
Deletes files inside the Windows folder
Detected potential crypto function
Drops PE files
Drops PE files to the windows directory (C:\Windows)
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
May check if the current machine is a sandbox (GetTickCount - Sleep)
May sleep (evasive loops) to hinder dynamic analysis
Modifies existing windows services
PE file contains an invalid checksum
PE file contains sections with non-standard names
Sample file is different than original file name gathered from version info
Sigma detected: Uncommon Svchost Parent Process
Sigma detected: Wow6432Node CurrentVersion Autorun Keys Modification
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)
Yara detected Keylogger Generic
Classification
| Name | Description | Attribution | Blogpost URLs | Link |
|---|---|---|---|---|
| Mofksys | No Attribution |
|
AV Detection |
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| Source: |
Avira: |
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ReversingLabs: |
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Joe Sandbox ML: |
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Joe Sandbox ML: |
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Joe Sandbox ML: |
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| Source: |
Joe Sandbox ML: |
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| Source: |
Code function: |
0_2_004E66F8 | |
| Source: |
Code function: |
0_2_004E1864 | |
| Source: |
Code function: |
0_2_004E6820 | |
| Source: |
Code function: |
0_2_004E18F8 | |
| Source: |
Code function: |
0_2_004E68B4 | |
| Source: |
Code function: |
0_2_004E18B4 | |
| Source: |
Code function: |
0_2_004E694C | |
| Source: |
Code function: |
0_2_004E1948 | |
| Source: |
Code function: |
0_2_004E6970 | |
| Source: |
Code function: |
3_2_004E66F8 | |
| Source: |
Code function: |
3_2_004E1864 | |
| Source: |
Code function: |
3_2_004E6820 | |
| Source: |
Code function: |
3_2_004E18F8 | |
| Source: |
Code function: |
3_2_004E68B4 | |
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Code function: |
3_2_004E18B4 | |
| Source: |
Code function: |
3_2_004E694C | |
| Source: |
Code function: |
3_2_004E1948 | |
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Code function: |
3_2_004E6970 | |
| Source: |
Static PE information: |
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Spreading |
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Code function: |
0_2_0042AD58 | |
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Code function: |
0_2_0042AD58 | |
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Code function: |
0_2_00426D80 | |
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Code function: |
0_2_00426D80 | |
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Code function: |
0_2_00427F2E | |
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0_2_00427F2E | |
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Code function: |
0_2_00427F36 | |
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Code function: |
0_2_00427F36 | |
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Code function: |
0_2_0042AD58 | |
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Code function: |
0_2_0042AD58 | |
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Code function: |
0_2_00426D80 | |
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0_2_00426D80 | |
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0_2_00427F2E | |
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0_2_00427F2E | |
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0_2_00427F36 | |
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0_2_00427F36 | |
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3_2_0042AD58 | |
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3_2_0042AD58 | |
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Code function: |
3_2_00426D80 | |
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3_2_00426D80 | |
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Code function: |
3_2_00427F2E | |
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Code function: |
3_2_00427F2E | |
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Code function: |
3_2_00427F36 | |
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Code function: |
3_2_00427F36 | |
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Code function: |
3_2_0042AD58 | |
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Code function: |
3_2_0042AD58 | |
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Code function: |
3_2_00426D80 | |
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Code function: |
3_2_00426D80 | |
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Code function: |
3_2_00427F2E | |
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Code function: |
3_2_00427F2E | |
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Code function: |
3_2_00427F36 | |
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Code function: |
3_2_00427F36 | |
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Code function: |
0_2_0042806E | |
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HTTP traffic detected: |
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| Source: |
HTTP traffic detected: |
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| Source: |
HTTP traffic detected: |
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| Source: |
HTTP traffic detected: |
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| Source: |
HTTP traffic detected: |
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| Source: |
HTTP traffic detected: |
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| Source: |
HTTP traffic detected: |
||
| Source: |
HTTP traffic detected: |
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| Source: |
HTTP traffic detected: |
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| Source: |
HTTP traffic detected: |
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| Source: |
HTTP traffic detected: |
||
| Source: |
DNS traffic detected: |
||
| Source: |
DNS traffic detected: |
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| Source: |
DNS traffic detected: |
||
| Source: |
HTTP traffic detected: | ||