Renamed ZOHO Dctask64 Execution

Title: Renamed ZOHO Dctask64 Execution
Status: test
Description:Detects a renamed "dctask64.exe" execution, a signed binary by ZOHO Corporation part of ManageEngine Endpoint Central. This binary can be abused for DLL injection, arbitrary command and process execution.
References:
  -https://twitter.com/gN3mes1s/status/1222088214581825540
  -https://twitter.com/gN3mes1s/status/1222095963789111296
  -https://twitter.com/gN3mes1s/status/1222095371175911424
Author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
Date: 2020-01-28
modified:2025-01-22
Tags:

• -'attack.privilege-escalation'
• -'attack.stealth'
• -'attack.t1036'
• -'attack.t1055.001'
• -'attack.t1202'
• -'attack.t1218'

Logsource:

• category: process_creation
• product: windows

Detection:
  selection:
    Hashes|contains:
      -'IMPHASH=6834B1B94E49701D77CCB3C0895E1AFD'
      -'IMPHASH=1BB6F93B129F398C7C4A76BB97450BBA'
      -'IMPHASH=FAA2AC19875FADE461C8D89DCF2710A3'
      -'IMPHASH=F1039CED4B91572AB7847D26032E6BBF'

  filter_main_legit_name:
    Image|endswith: '\dctask64.exe'
  condition:selection and not 1 of filter_main_*
Falsepositives:
  -Unknown
Level: high