Emerging Threathightest
Potential BlackByte Ransomware Activity
Detects command line patterns used by BlackByte ransomware in different operations
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Launch
Florian Roth (Nextron Systems)Created Fri Feb 25Updated Wed Feb 08999e8307-a775-4d5f-addc-4855632335be2021
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 Logic2 selectors
detection:
selection_1:
Image|startswith: 'C:\Users\Public\'
CommandLine|contains: ' -single '
selection_2:
CommandLine|contains:
- 'del C:\Windows\System32\Taskmgr.exe'
- ';Set-Service -StartupType Disabled $'
- 'powershell -command "$x =[System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String('
- ' do start wordpad.exe /p '
condition: 1 of selection_*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
References
MITRE ATT&CK
Techniques
Sub-techniques
Other
detection.emerging-threats
Rule Metadata
Rule ID
999e8307-a775-4d5f-addc-4855632335be
Status
test
Level
high
Type
Emerging Threat
Created
Fri Feb 25
Modified
Wed Feb 08
Path
rules-emerging-threats/2021/Malware/BlackByte/proc_creation_win_malware_blackbyte_ransomware.yml
Raw Tags
attack.executionattack.defense-evasionattack.impactattack.t1485attack.t1498attack.t1059.001attack.t1140detection.emerging-threats