SECURITY INCIDENT REPORT
========================
Date: 2024-01-15
Incident ID: INC-2024-0042

Executive Summary
-----------------
A sophisticated malware campaign has been detected targeting financial institutions. 
The attack leverages multiple vectors and shows signs of APT involvement.

Technical Analysis
------------------

1. Initial Compromise
   - Phishing email sent from attacker@malicious-domain.com
   - Malicious attachment: invoice_2024.pdf (SHA256: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855)
   - Dropper MD5: 5f4dcc3b5aa765d61d8327deb882cf99

2. Command & Control Infrastructure
   - Primary C2 server: 185.220.101.45
   - Secondary C2: evil-command.net (resolves to 192.168.1.100)
   - Backup domain: backup.malware-c2.org
   - Uses HTTPS on port 443: https://evil-command.net/beacon.php
   - Alternative protocols observed on 10.0.0.50:8080

3. Malware Characteristics
   - Creates mutex: Global\SystemUpdateMutex
   - Registers service: MalwareUpdateService
   - Drops files to: C:\Windows\Temp\update.exe
   - Additional payload: C:\Users\Public\Documents\helper.dll
   - Linux variant found at: /tmp/.hidden/backdoor.sh

4. Registry Modifications
   - Persistence key: HKLM\Software\Microsoft\Windows\CurrentVersion\Run
   - Additional key: HKEY_CURRENT_USER\Software\Classes\malware

5. Network Indicators
   - User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) BotClient/1.0
   - IPv6 C2: 2001:0db8:85a3:0000:0000:8a2e:0370:7334
   - MAC address of infected host: 00:1B:44:11:3A:B7
   - AS Number: AS13335

6. Vulnerability Exploited
   - CVE-2021-44228 (Log4Shell)
   - MITRE ATT&CK Techniques: T1055, T1566.001

7. Cryptocurrency Addresses
   - Bitcoin wallet: 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa
   - Ethereum: 0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb4
   - Monero: 48ju2dwsRu3rJEMVPD6MNaT2BQNYdZBYHJYZ8F8nPRX2SHPVQgUCYGtjfUNz7KT5RjXrXkz9r7pPp8TpWaStXN7L7Wkn1zP

8. Additional Hashes
   - SHA1: 356a192b7913b04c54574d18c28d46e6395428ab
   - SHA512: cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e
   - SSDeep: 768:C7tsNKI7aU8Y1O5wjNHDwLxQJidNG3qGqDRTRT:CtsI7aUwjNQidNG3GqDRT

9. Named Pipes and IPC
   - Named pipe: \\.\pipe\MalwarePipe
   - Another pipe: \\.\pipe\C2Communication

10. Authentication Token
    - JWT found: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c

YARA Rule for Detection
------------------------
rule MalwareDetection {
    meta:
        description = "Detects the malware variant"
    strings:
        $a = "SystemUpdateMutex"
        $b = "evil-command.net"
    condition:
        any of them
}

Recommendations
---------------
1. Block all listed IP addresses and domains at the firewall
2. Search for listed file hashes in your environment
3. Monitor for the listed registry keys and services
4. Update systems to patch CVE-2021-44228

Contact Information
-------------------
SOC Team: soc@company.com
Incident Response: incident.response@company.org

END OF REPORT