Analytics Story: Trickbot

Date: 2021-04-20 ID: 16f93769-8342-44c0-9b1d-f131937cce8e Author: Rod Soto, Teoderick Contreras, Splunk Product: Splunk Enterprise Security

Description

Leverage searches that allow you to detect and investigate unusual activities that might relate to the trickbot banking trojan, including looking for file writes associated with its payload, process injection, shellcode execution and data collection even in LDAP environment.

Why it matters

trickbot banking trojan campaigns targeting banks and other vertical sectors.This malware is known in Microsoft Windows OS where target security Microsoft Defender to prevent its detection and removal. steal Verizon credentials and targeting banks using its multi component modules that collect and exfiltrate data.

Detections

Name ▲▼	Technique ▲▼	Type ▲▼
Account Discovery With Net App	Domain Account, Account Discovery	TTP
Attempt To Stop Security Service	Disable or Modify Tools, Impair Defenses	TTP
Cobalt Strike Named Pipes	Process Injection	TTP
Executable File Written in Administrative SMB Share	Remote Services, SMB/Windows Admin Shares	TTP
Executables Or Script Creation In Suspicious Path	Masquerading	Anomaly
Mshta spawning Rundll32 OR Regsvr32 Process	System Binary Proxy Execution, Mshta	TTP
Office Application Spawn rundll32 process	Phishing, Spearphishing Attachment	TTP
Office Document Executing Macro Code	Phishing, Spearphishing Attachment	TTP
Office Product Spawn CMD Process	Phishing, Spearphishing Attachment	TTP
Office Product Spawning CertUtil	Phishing, Spearphishing Attachment	TTP
Powershell Remote Thread To Known Windows Process	Process Injection	TTP
Schedule Task with Rundll32 Command Trigger	Scheduled Task/Job	TTP
Scheduled Task Deleted Or Created via CMD	Scheduled Task, Scheduled Task/Job	TTP
Suspicious Process File Path	Create or Modify System Process	TTP
Suspicious Rundll32 StartW	System Binary Proxy Execution, Rundll32	TTP
Trickbot Named Pipe	Process Injection	TTP
Wermgr Process Connecting To IP Check Web Services	Gather Victim Network Information, IP Addresses	TTP
Wermgr Process Create Executable File	Obfuscated Files or Information	TTP
Wermgr Process Spawned CMD Or Powershell Process	Command and Scripting Interpreter	TTP

Data Sources

Name ▲▼	Platform ▲▼	Sourcetype ▲▼	Source ▲▼
CrowdStrike ProcessRollup2	N/A	`crowdstrike:events:sensor`	`crowdstrike`
Sysmon EventID 1	Windows	`xmlwineventlog`	`XmlWinEventLog:Microsoft-Windows-Sysmon/Operational`
Sysmon EventID 11	Windows	`xmlwineventlog`	`XmlWinEventLog:Microsoft-Windows-Sysmon/Operational`
Sysmon EventID 17	Windows	`xmlwineventlog`	`XmlWinEventLog:Microsoft-Windows-Sysmon/Operational`
Sysmon EventID 18	Windows	`xmlwineventlog`	`XmlWinEventLog:Microsoft-Windows-Sysmon/Operational`
Sysmon EventID 22	Windows	`xmlwineventlog`	`XmlWinEventLog:Microsoft-Windows-Sysmon/Operational`
Sysmon EventID 7	Windows	`xmlwineventlog`	`XmlWinEventLog:Microsoft-Windows-Sysmon/Operational`
Sysmon EventID 8	Windows	`xmlwineventlog`	`XmlWinEventLog:Microsoft-Windows-Sysmon/Operational`
Windows Event Log Security 4688	Windows	`xmlwineventlog`	`XmlWinEventLog:Security`
Windows Event Log Security 4698	Windows	`xmlwineventlog`	`XmlWinEventLog:Security`
Windows Event Log Security 5145	Windows	`xmlwineventlog`	`XmlWinEventLog:Security`

References

Source: GitHub | Version: 1