Sigma rule: Potential Raspberry Robin Dot Ending File

Rule

Title

Potential Raspberry Robin Dot Ending File

Status

test

Level

high

Author

Nasreddine Bencherchali (Nextron Systems)

Date

2022-10-28

Modified

2023-02-05

File

rules-emerging-threats/2022/Malware/Raspberry-Robin/proc_creation_win_malware_raspberry_robin_single_dot_ending_file.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects commandline containing reference to files ending with a "." This scheme has been seen used by raspberry-robin

Log source

product

windows

category

process_creation

Detection

selection:
    # Example 1: https://www.microsoft.com/en-us/security/blog/wp-content/uploads/2022/10/fig-3f-raspberryrobin-runonce.png
    # Example 2: https://www.microsoft.com/en-us/security/blog/wp-content/uploads/2022/10/fig-5f-odbcconf.png
    # Example 3: https://www.microsoft.com/en-us/security/blog/wp-content/uploads/2022/10/fig-6f-fauppod-command-line.png
    CommandLine|re: \\[a-zA-Z0-9]{1,32}\.[a-zA-Z0-9]{1,6}\.[ "']{1}  # cannot match on end-of-line because of FPs with bind DNS notation
condition: selection

False positives (as the rule lists them)

• Unknown

Tags

• attack.execution
• detection.emerging-threats

References

• https://www.microsoft.com/en-us/security/blog/2022/10/27/raspberry-robin-worm-part-of-larger-ecosystem-facilitating-pre-ransomware-activity/

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2022/Malware/Raspberry-Robin/proc_creation_win_malware_raspberry_robin_single_dot_ending_file.yml