Windows
Analysis Report
KEQprG0zDB.exe
Overview
General Information
Sample name: | KEQprG0zDB.exerenamed because original name is a hash value |
Original sample name: | 2bef62a4bc86df703a49213669930fdd.exe |
Analysis ID: | 1486292 |
MD5: | 2bef62a4bc86df703a49213669930fdd |
SHA1: | 324765a6ccfb701f000ff5c18f2ca2bb854cd56c |
SHA256: | efdeaa058c81942dcc35baea02ca59df41043d6fab19b8a5d26c3bacc584a2d3 |
Tags: | exeStealc |
Infos: | |
Detection
Stealc
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found malware configuration
Multi AV Scanner detection for submitted file
Yara detected AntiVM3
Yara detected Powershell download and execute
Yara detected Stealc
.NET source code contains potential unpacker
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after checking locale)
Injects a PE file into a foreign processes
Machine Learning detection for sample
Searches for specific processes (likely to inject)
Sigma detected: Silenttrinity Stager Msbuild Activity
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Allocates memory with a write watch (potentially for evading sandboxes)
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to create guard pages, often used to hinder reverse usering and debugging
Contains functionality to dynamically determine API calls
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Contains functionality to query locales information (e.g. system language)
Contains functionality to read the PEB
Contains functionality to record screenshots
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Downloads executable code via HTTP
Drops PE files
Drops PE files to the application program directory (C:\ProgramData)
Enables debug privileges
Extensive use of GetProcAddress (often used to hide API calls)
Found dropped PE file which has not been started or loaded
Found inlined nop instructions (likely shell or obfuscated code)
Found potential string decryption / allocating functions
HTTP GET or POST without a user agent
Internet Provider seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
PE / OLE file has an invalid certificate
PE file contains an invalid checksum
Queries information about the installed CPU (vendor, model number etc)
Queries the volume information (name, serial number etc) of a device
Sample file is different than original file name gathered from version info
Uses 32bit PE files
Uses Microsoft's Enhanced Cryptographic Provider
Uses code obfuscation techniques (call, push, ret)
Uses insecure TLS / SSL version for HTTPS connection
Yara detected Credential Stealer
Classification
- System is w10x64
KEQprG0zDB.exe (PID: 416 cmdline:
"C:\Users\ user\Deskt op\KEQprG0 zDB.exe" MD5: 2BEF62A4BC86DF703A49213669930FDD) MSBuild.exe (PID: 2656 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\MSB uild.exe" MD5: 8FDF47E0FF70C40ED3A17014AEEA4232)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Stealc | Stealc is an information stealer advertised by its presumed developer Plymouth on Russian-speaking underground forums and sold as a Malware-as-a-Service since January 9, 2023. According to Plymouth's statement, stealc is a non-resident stealer with flexible data collection settings and its development is relied on other prominent stealers: Vidar, Raccoon, Mars and Redline.Stealc is written in C and uses WinAPI functions. It mainly targets date from web browsers, extensions and Desktop application of cryptocurrency wallets, and from other applications (messengers, email clients, etc.). The malware downloads 7 legitimate third-party DLLs to collect sensitive data from web browsers, including sqlite3.dll, nss3.dll, vcruntime140.dll, mozglue.dll, freebl3.dll, softokn3.dll and msvcp140.dll. It then exfiltrates the collected information file by file to its C2 server using HTTP POST requests. | No Attribution |
{"C2 url": "http://217.138.215.82/8c77d85de581124b.php"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Stealc_1 | Yara detected Stealc | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Stealc | Yara detected Stealc | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
Click to see the 5 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security |
System Summary |
---|
Source: | Author: Kiran kumar s, oscd.community: |
⊘No Snort rule has matched
Timestamp: | 2024-08-01T22:23:09.723312+0200 |
SID: | 2803304 |
Source Port: | 49724 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | Unknown Traffic |
Timestamp: | 2024-08-01T22:23:08.521804+0200 |
SID: | 2803304 |
Source Port: | 49724 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | Unknown Traffic |
Timestamp: | 2024-08-01T22:22:21.960741+0200 |
SID: | 2044246 |
Source Port: | 49719 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | Malware Command and Control Activity Detected |
Timestamp: | 2024-08-01T22:22:22.501813+0200 |
SID: | 2044248 |
Source Port: | 49719 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | Malware Command and Control Activity Detected |
Timestamp: | 2024-08-01T22:22:22.002373+0200 |
SID: | 2044247 |
Source Port: | 80 |
Destination Port: | 49719 |
Protocol: | TCP |
Classtype: | Malware Command and Control Activity Detected |
Timestamp: | 2024-08-01T22:22:21.368051+0200 |
SID: | 2044243 |
Source Port: | 49719 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | Malware Command and Control Activity Detected |
Timestamp: | 2024-08-01T22:22:23.032360+0200 |
SID: | 2011803 |
Source Port: | 80 |
Destination Port: | 49719 |
Protocol: | TCP |
Classtype: | Executable code was detected |
Timestamp: | 2024-08-01T22:22:22.863891+0200 |
SID: | 2011803 |
Source Port: | 80 |
Destination Port: | 49719 |
Protocol: | TCP |
Classtype: | Executable code was detected |
Timestamp: | 2024-08-01T22:22:21.769512+0200 |
SID: | 2044245 |
Source Port: | 80 |
Destination Port: | 49719 |
Protocol: | TCP |
Classtype: | Malware Command and Control Activity Detected |
Timestamp: | 2024-08-01T22:22:22.874696+0200 |
SID: | 2011803 |
Source Port: | 80 |
Destination Port: | 49719 |
Protocol: | TCP |
Classtype: | Executable code was detected |
Timestamp: | 2024-08-01T22:22:28.558443+0200 |
SID: | 2011803 |
Source Port: | 80 |
Destination Port: | 49719 |
Protocol: | TCP |
Classtype: | Executable code was detected |
Timestamp: | 2024-08-01T22:22:29.363296+0200 |
SID: | 2002725 |
Source Port: | 80 |
Destination Port: | 49719 |
Protocol: | TCP |
Classtype: | Web Application Attack |
Timestamp: | 2024-08-01T22:22:22.782643+0200 |
SID: | 2011803 |
Source Port: | 80 |
Destination Port: | 49719 |
Protocol: | TCP |
Classtype: | Executable code was detected |
Timestamp: | 2024-08-01T22:22:22.876025+0200 |
SID: | 2011803 |
Source Port: | 80 |
Destination Port: | 49719 |
Protocol: | TCP |
Classtype: | Executable code was detected |
Timestamp: | 2024-08-01T22:22:23.437023+0200 |
SID: | 2011803 |
Source Port: | 80 |
Destination Port: | 49719 |
Protocol: | TCP |
Classtype: | Executable code was detected |
Timestamp: | 2024-08-01T22:22:30.776356+0200 |
SID: | 2009080 |
Source Port: | 80 |
Destination Port: | 49719 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 2024-08-01T22:22:29.755144+0200 |
SID: | 2803304 |
Source Port: | 49719 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | Unknown Traffic |
Timestamp: | 2024-08-01T22:22:21.718941+0200 |
SID: | 2044244 |
Source Port: | 49719 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | Malware Command and Control Activity Detected |
Timestamp: | 2024-08-01T22:22:27.745696+0200 |
SID: | 2803304 |
Source Port: | 49719 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | Unknown Traffic |
Timestamp: | 2024-08-01T22:22:22.703635+0200 |
SID: | 2803304 |
Source Port: | 49719 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | Unknown Traffic |
Timestamp: | 2024-08-01T22:22:23.981176+0200 |
SID: | 2009080 |
Source Port: | 80 |
Destination Port: | 49719 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 2024-08-01T22:22:31.081952+0200 |
SID: | 2803304 |
Source Port: | 49719 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | Unknown Traffic |
Timestamp: | 2024-08-01T22:22:26.043610+0200 |
SID: | 2803304 |
Source Port: | 49719 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | Unknown Traffic |
Timestamp: | 2024-08-01T22:22:29.359875+0200 |
SID: | 2009080 |
Source Port: | 80 |
Destination Port: | 49719 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Click to jump to signature section
Show All Signature Results
AV Detection |
---|
Source: | Avira: |
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: |
Source: | Malware Configuration Extractor: |
Source: | ReversingLabs: |
Source: | Integrated Neural Analysis Model: |
Source: | Joe Sandbox ML: |
Source: | Code function: | 5_2_00409BB0 | |
Source: | Code function: | 5_2_00418940 | |
Source: | Code function: | 5_2_0040C660 | |
Source: | Code function: | 5_2_00407280 | |
Source: | Code function: | 5_2_00409B10 |
Source: | Static PE information: |
Source: | HTTPS traffic detected: |
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: | Code function: | 5_2_0040BCB0 | |
Source: | Code function: | 5_2_0040E270 | |
Source: | Code function: | 5_2_0040DC50 | |
Source: | Code function: | 5_2_00414050 | |
Source: | Code function: | 5_2_0040D8C0 | |
Source: | Code function: | 5_2_0040F4F0 | |
Source: | Code function: | 5_2_004139B0 | |
Source: | Code function: | 5_2_0040EB60 | |
Source: | Code function: | 5_2_00401710 | |
Source: | Code function: | 5_2_004133C0 | |
Source: | Code function: | 5_2_004143F0 |
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior |
Source: | Code function: | 0_2_05E78540 | |
Source: | Code function: | 0_2_05E7CF00 | |
Source: | Code function: | 0_2_05E775D1 | |
Source: | Code function: | 0_2_05E775D8 | |
Source: | Code function: | 0_2_05E78530 | |
Source: | Code function: | 0_2_05E786E4 | |
Source: | Code function: | 0_2_05E7CF00 | |
Source: | Code function: | 0_2_05E8F4C0 | |
Source: | Code function: | 0_2_05E8F4D0 | |
Source: | Code function: | 0_2_05E8E988 | |
Source: | Code function: | 0_2_05E8E998 | |
Source: | Code function: | 0_2_0606D490 |
Networking |
---|
Source: | URLs: |
Source: | HTTP traffic detected: |