Windows
Analysis Report
WyPb2uVZ1P.exe
Overview
General Information
Sample name: | WyPb2uVZ1P.exerenamed because original name is a hash value |
Original sample name: | a0b8c563061f45f6f5b7573d57c3b0c6.exe |
Analysis ID: | 1618759 |
MD5: | a0b8c563061f45f6f5b7573d57c3b0c6 |
SHA1: | 1d5e10368656a4176b7c5ceb98062652eea79832 |
SHA256: | e0b300c8470d1e78d5e17617983506311c2adee7fd2326c32b904d2fb1d4e80c |
Tags: | exeuser-abuse_ch |
Infos: | |
Detection
LummaC Stealer
Score: | 100 |
Range: | 0 - 100 |
Confidence: | 100% |
Signatures
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Yara detected LummaC Stealer
.NET source code contains potential unpacker
.NET source code contains very large array initializations
C2 URLs / IPs found in malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Found string related to ransomware
Joe Sandbox ML detected suspicious sample
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Query firmware table information (likely to detect VMs)
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)
Tries to steal Crypto Currency Wallets
Yara detected Costura Assembly Loader
Allocates memory with a write watch (potentially for evading sandboxes)
Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)
Contains functionality to call native functions
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to communicate with device drivers
Contains functionality to create new users
Contains functionality to dynamically determine API calls
Contains functionality to execute programs as a different user
Contains functionality to read the PEB
Contains functionality to record screenshots
Contains functionality to shutdown / reboot the system
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Enables debug privileges
Found large amount of non-executed APIs
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
May use bcdedit to modify the Windows boot settings
PE / OLE file has an invalid certificate
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Sample file is different than original file name gathered from version info
Searches for user specific document files
Suricata IDS alerts with low severity for network traffic
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 signature match
Classification
- System is w10x64
WyPb2uVZ1P.exe (PID: 984 cmdline:
"C:\Users\ user\Deskt op\WyPb2uV Z1P.exe" MD5: A0B8C563061F45F6F5B7573D57C3B0C6) RegAsm.exe (PID: 2956 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Asm.exe" MD5: 0D5DF43AF2916F47D00C1573797C1A13) conhost.exe (PID: 2796 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
- cleanup
{"C2 url": "https://hitreasurxes.tech:443/api", "Build Version": "WG6I6S--web1"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_LummaCStealer_3 | Yara detected LummaC Stealer | Joe Security | ||
JoeSecurity_LummaCStealer_2 | Yara detected LummaC Stealer | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
Windows_Trojan_Donutloader_f40e3759 | unknown | unknown |
| |
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
Windows_Trojan_Donutloader_f40e3759 | unknown | unknown |
| |
Windows_Trojan_Donutloader_f40e3759 | unknown | unknown |
| |
Click to see the 3 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
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 | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
Click to see the 7 entries |
⊘No Sigma rule has matched
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-02-19T07:18:43.196200+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.5 | 49799 | 149.154.167.99 | 443 | TCP |
2025-02-19T07:18:44.031990+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.5 | 49805 | 104.21.16.1 | 443 | TCP |
2025-02-19T07:18:44.903701+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.5 | 49812 | 104.21.16.1 | 443 | TCP |
2025-02-19T07:18:46.077108+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.5 | 49820 | 104.21.16.1 | 443 | TCP |
2025-02-19T07:18:47.176639+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.5 | 49825 | 104.21.16.1 | 443 | TCP |
2025-02-19T07:18:59.535097+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.5 | 49907 | 104.21.16.1 | 443 | TCP |
2025-02-19T07:19:00.695460+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.5 | 49915 | 104.21.16.1 | 443 | TCP |
2025-02-19T07:19:01.921708+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.5 | 49926 | 104.21.16.1 | 443 | TCP |
2025-02-19T07:19:04.121367+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.5 | 49939 | 104.21.16.1 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-02-19T07:18:44.439810+0100 | 2054653 | 1 | A Network Trojan was detected | 192.168.2.5 | 49805 | 104.21.16.1 | 443 | TCP |
2025-02-19T07:18:45.398889+0100 | 2054653 | 1 | A Network Trojan was detected | 192.168.2.5 | 49812 | 104.21.16.1 | 443 | TCP |
2025-02-19T07:19:04.605214+0100 | 2054653 | 1 | A Network Trojan was detected | 192.168.2.5 | 49939 | 104.21.16.1 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-02-19T07:18:44.439810+0100 | 2049836 | 1 | A Network Trojan was detected | 192.168.2.5 | 49805 | 104.21.16.1 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-02-19T07:18:58.992014+0100 | 2048094 | 1 | Malware Command and Control Activity Detected | 192.168.2.5 | 49825 | 104.21.16.1 | 443 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Malware Configuration Extractor: |
Source: | ReversingLabs: | |||
Source: | Virustotal: | Perma Link |
Source: | Integrated Neural Analysis Model: |
Source: | Code function: | 0_2_00A92A60 | |
Source: | Code function: | 0_2_00A92B10 | |
Source: | Code function: | 0_2_00A92FE0 | |
Source: | Code function: | 0_2_00A92F70 |
Source: | Binary or memory string: | memstr_a8518fd1-a |
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