Edit tour
Windows
Analysis Report
NK3SASJheq.exe
Overview
General Information
Sample name: | NK3SASJheq.exerenamed because original name is a hash value |
Original sample name: | 4eaa701f7c45f26c36fc162fa7c6ff85.exe |
Analysis ID: | 1540830 |
MD5: | 4eaa701f7c45f26c36fc162fa7c6ff85 |
SHA1: | a5e007859fa440d811459496ea50c72cf5345a68 |
SHA256: | 74f3eca22bff147cedf63161cbb2d8d5ca64062cbba3e3c463ea5f2387bda0e8 |
Tags: | exeStealcuser-abuse_ch |
Infos: | |
Detection
Stealc, Vidar
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Yara detected Powershell download and execute
Yara detected Stealc
Yara detected Vidar stealer
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after checking locale)
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for sample
Searches for specific processes (likely to inject)
Tries to harvest and steal Bitcoin Wallet information
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Crypto Currency Wallets
AV process strings found (often used to terminate AV products)
Contains functionality to call native functions
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to create guard pages, often used to hinder reverse engineering 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 CPU information (cpuid)
Contains functionality to query locales information (e.g. system language)
Contains functionality to read the PEB
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Detected potential crypto function
Downloads executable code via HTTP
Drops PE files
Drops PE files to the application program directory (C:\ProgramData)
Extensive use of GetProcAddress (often used to hide API calls)
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
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
One or more processes crash
PE file contains sections with non-standard names
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
Suricata IDS alerts with low severity for network traffic
Uses 32bit PE files
Uses Microsoft's Enhanced Cryptographic Provider
Uses code obfuscation techniques (call, push, ret)
Yara detected Credential Stealer
Yara signature match
Classification
- System is w10x64
- NK3SASJheq.exe (PID: 636 cmdline:
"C:\Users\ user\Deskt op\NK3SASJ heq.exe" MD5: 4EAA701F7C45F26C36FC162FA7C6FF85) - WerFault.exe (PID: 4352 cmdline:
C:\Windows \SysWOW64\ WerFault.e xe -u -p 6 36 -s 2336 MD5: C31336C1EFC2CCB44B4326EA793040F2)
- 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 |
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Vidar | Vidar is a forked malware based on Arkei. It seems this stealer is one of the first that is grabbing information on 2FA Software and Tor Browser. | No Attribution |
{"C2 url": "http://62.204.41.176/edd20096ecef326d.php", "Botnet": "default8_cap"}
{"C2 url": "http://62.204.41.176/edd20096ecef326d.php", "Botnet": "default8_cap"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Stealc_1 | Yara detected Stealc | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
Windows_Trojan_RedLineStealer_ed346e4c | unknown | unknown |
| |
JoeSecurity_Stealc | Yara detected Stealc | Joe Security | ||
JoeSecurity_Stealc | Yara detected Stealc | Joe Security | ||
JoeSecurity_Stealc | Yara detected Stealc | Joe Security | ||
JoeSecurity_Stealc | Yara detected Stealc | Joe Security | ||
Click to see the 5 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Stealc | Yara detected Stealc | Joe Security | ||
JoeSecurity_Stealc | Yara detected Stealc | Joe Security | ||
JoeSecurity_Stealc | Yara detected Stealc | Joe Security | ||
JoeSecurity_Stealc | Yara detected Stealc | Joe Security | ||
JoeSecurity_Stealc | Yara detected Stealc | Joe Security | ||
Click to see the 1 entries |
⊘No Sigma rule has matched
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-10-24T08:38:22.578544+0200 | 2044245 | 1 | Malware Command and Control Activity Detected | 62.204.41.176 | 80 | 192.168.2.8 | 49704 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-10-24T08:38:22.571656+0200 | 2044244 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49704 | 62.204.41.176 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-10-24T08:38:22.844027+0200 | 2044246 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49704 | 62.204.41.176 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-10-24T08:38:23.630181+0200 | 2044248 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49704 | 62.204.41.176 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-10-24T08:38:22.899785+0200 | 2044247 | 1 | Malware Command and Control Activity Detected | 62.204.41.176 | 80 | 192.168.2.8 | 49704 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-10-24T08:38:22.296850+0200 | 2044243 | 1 | Malware Command and Control Activity Detected | 192.168.2.8 | 49704 | 62.204.41.176 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-10-24T08:38:24.234956+0200 | 2803304 | 3 | Unknown Traffic | 192.168.2.8 | 49704 | 62.204.41.176 | 80 | TCP |
2024-10-24T08:38:31.206282+0200 | 2803304 | 3 | Unknown Traffic | 192.168.2.8 | 49704 | 62.204.41.176 | 80 | TCP |
2024-10-24T08:38:33.438995+0200 | 2803304 | 3 | Unknown Traffic | 192.168.2.8 | 49704 | 62.204.41.176 | 80 | TCP |
2024-10-24T08:38:34.568895+0200 | 2803304 | 3 | Unknown Traffic | 192.168.2.8 | 49704 | 62.204.41.176 | 80 | TCP |
2024-10-24T08:38:35.239178+0200 | 2803304 | 3 | Unknown Traffic | 192.168.2.8 | 49704 | 62.204.41.176 | 80 | TCP |
2024-10-24T08:38:36.815539+0200 | 2803304 | 3 | Unknown Traffic | 192.168.2.8 | 49704 | 62.204.41.176 | 80 | TCP |
2024-10-24T08:38:37.295398+0200 | 2803304 | 3 | Unknown Traffic | 192.168.2.8 | 49704 | 62.204.41.176 | 80 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
---|
Source: | Malware Configuration Extractor: | ||
Source: | Malware Configuration Extractor: |
Source: | Virustotal: | Perma Link |
Source: | ReversingLabs: | |||
Source: | Virustotal: | Perma Link |
Source: | Integrated Neural Analysis Model: |
Source: | Joe Sandbox ML: |
Source: | Code function: | 0_2_00418EA0 | |
Source: | Code function: | 0_2_00409B60 | |
Source: | Code function: | 0_2_0040C820 | |
Source: | Code function: | 0_2_00407240 | |
Source: | Code function: | 0_2_00409AC0 | |
Source: | Code function: | 0_2_6CBC6C80 |
Compliance |
---|
Source: | Unpacked PE file: |
Source: | Static PE information: |
Source: | File opened: | Jump to behavior |
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: | 0_2_0040E430 | |
Source: | Code function: | 0_2_004138B0 | |
Source: | Code function: | 0_2_0040BE70 | |
Source: | Code function: | 0_2_004016D0 | |
Source: | Code function: | 0_2_0040DA80 | |
Source: | Code function: | 0_2_0040F6B0 | |
Source: | Code function: | 0_2_00414570 | |
Source: | Code function: | 0_2_00414910 | |
Source: | Code function: | 0_2_0040ED20 | |
Source: | Code function: | 0_2_0040DE10 | |
Source: | Code function: | 0_2_00413EA0 |
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 |
Networking |
---|
Source: | Suricata IDS: | ||
Source: | Suricata IDS: | ||
Source: | Suricata IDS: | ||
Source: | Suricata IDS: | ||
Source: | Suricata IDS: | ||
Source: | Suricata IDS: |
Source: | URLs: | ||
Source: | URLs: |
Source: | HTTP traffic detected: |