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56 lines
1.8 KiB
YAML
56 lines
1.8 KiB
YAML
title: Greenbug Campaign Indicators
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id: 3711eee4-a808-4849-8a14-faf733da3612
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status: experimental
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description: Detects tools and process executions as observed in a Greenbug campaign in May 2020
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references:
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- https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/greenbug-espionage-telco-south-asia
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author: Florian Roth
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date: 2020/05/20
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modified: 2020/08/27
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tags:
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- attack.g0049
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- attack.execution
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- attack.t1059.001
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- attack.t1086 #an old one
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- attack.command_and_control
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- attack.t1105
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- attack.defense_evasion
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- attack.t1036 # an old one
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- attack.t1036.005
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logsource:
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category: process_creation
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product: windows
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detection:
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selection1:
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CommandLine|contains|all:
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- 'bitsadmin /transfer'
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- 'CSIDL_APPDATA'
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selection2:
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CommandLine|contains:
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- 'CSIDL_SYSTEM_DRIVE'
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selection3:
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CommandLine|contains:
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- '\msf.ps1'
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- '8989 -e cmd.exe'
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- 'system.Data.SqlClient.SqlDataAdapter($cmd); [void]$da.fill'
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- '-nop -w hidden -c $k=new-object'
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- '[Net.CredentialCache]::DefaultCredentials;IEX '
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- ' -nop -w hidden -c $m=new-object net.webclient;$m'
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- '-noninteractive -executionpolicy bypass whoami'
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- '-noninteractive -executionpolicy bypass netstat -a'
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- 'L3NlcnZlc' # base64 encoded '/server='
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selection4:
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Image|endswith:
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- '\adobe\Adobe.exe'
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- '\oracle\local.exe'
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- '\revshell.exe'
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- 'infopagesbackup\ncat.exe'
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- 'CSIDL_SYSTEM\cmd.exe'
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- '\programdata\oracle\java.exe'
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- 'CSIDL_COMMON_APPDATA\comms\comms.exe'
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- '\Programdata\VMware\Vmware.exe'
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condition: 1 of them
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falsepositives:
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- Unknown
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level: critical
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