Emerging Threathightest
Potential Raspberry Robin Dot Ending File
Detects commandline containing reference to files ending with a "." This scheme has been seen used by raspberry-robin
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Nasreddine Bencherchali (Nextron Systems)Created Fri Oct 28Updated Sun Feb 05a35c97c8-d9c4-4c89-a3e7-533dc0bcb73a2022
Emerging Threat
Active Threat
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic1 selector
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: selectionFalse Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
References
MITRE ATT&CK
Tactics
Other
detection.emerging-threats
Rule Metadata
Rule ID
a35c97c8-d9c4-4c89-a3e7-533dc0bcb73a
Status
test
Level
high
Type
Emerging Threat
Created
Fri Oct 28
Modified
Sun Feb 05
Path
rules-emerging-threats/2022/Malware/Raspberry-Robin/proc_creation_win_malware_raspberry_robin_single_dot_ending_file.yml
Raw Tags
attack.executiondetection.emerging-threats