
title: Greenbug Campaign Indicators
author: Florian Roth
date: 2020/05/20
description: Detects tools and process executions as observed in a Greenbug campaign
  in May 2020
detection:
  SELECTION_1:
    EventID: 1
  SELECTION_2:
    CommandLine: '*bitsadmin*'
  SELECTION_3:
    CommandLine: '*/transfer*'
  SELECTION_4:
    CommandLine: '*CSIDL_APPDATA*'
  SELECTION_5:
    CommandLine:
    - '*CSIDL_SYSTEM_DRIVE*'
  SELECTION_6:
    CommandLine:
    - '*\msf.ps1*'
    - '*8989 -e cmd.exe*'
    - '*system.Data.SqlClient.SqlDataAdapter($cmd); [void]$da.fill*'
    - '*-nop -w hidden -c $k=new-object*'
    - '*[Net.CredentialCache]::DefaultCredentials;IEX *'
    - '* -nop -w hidden -c $m=new-object net.webclient;$m*'
    - '*-noninteractive -executionpolicy bypass whoami*'
    - '*-noninteractive -executionpolicy bypass netstat -a*'
    - '*L3NlcnZlcj1*'
  SELECTION_7:
    Image:
    - '*\adobe\Adobe.exe'
    - '*\oracle\local.exe'
    - '*\revshell.exe'
    - '*infopagesbackup\ncat.exe'
    - '*CSIDL_SYSTEM\cmd.exe'
    - '*\programdata\oracle\java.exe'
    - '*CSIDL_COMMON_APPDATA\comms\comms.exe'
    - '*\Programdata\VMware\Vmware.exe'
  condition: (SELECTION_1 and ((SELECTION_2 and SELECTION_3 and SELECTION_4) or SELECTION_5
    or SELECTION_6 or SELECTION_7))
falsepositives:
- Unknown
id: 3711eee4-a808-4849-8a14-faf733da3612
level: critical
logsource:
  category: process_creation
  product: windows
modified: 2021/09/21
references:
- https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/greenbug-espionage-telco-south-asia
status: experimental
tags:
- attack.g0049
- attack.execution
- attack.t1059.001
- attack.t1086
- attack.command_and_control
- attack.t1105
- attack.defense_evasion
- attack.t1036
- attack.t1036.005
ruletype: SIGMA
