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Detection rules › Sigma

APT27 - Emissary Panda Activity

Status
test
Severity
critical
Log source
product windows, category process_creation
Author
Florian Roth (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Detects the execution of DLL side-loading malware used by threat group Emissary Panda aka APT27

MITRE ATT&CK coverage

TacticTechniques
ExecutionT1574.001 Hijack Execution Flow: DLL
StealthT1574.001 Hijack Execution Flow: DLL

Event coverage

ProviderEventTitle
SysmonEvent ID 1Process creation
Security-AuditingEvent ID 4688A new process has been created.

Rule body yaml

title: APT27 - Emissary Panda Activity
id: 9aa01d62-7667-4d3b-acb8-8cb5103e2014
status: test
description: Detects the execution of DLL side-loading malware used by threat group Emissary Panda aka APT27
references:
    - https://app.any.run/tasks/579e7587-f09d-4aae-8b07-472833262965
    - https://twitter.com/cyb3rops/status/1168863899531132929
    - https://research.nccgroup.com/2018/05/18/emissary-panda-a-potential-new-malicious-tool/
author: Florian Roth (Nextron Systems)
date: 2018-09-03
modified: 2023-03-09
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.execution
    - attack.stealth
    - attack.t1574.001
    - attack.g0027
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection_sllauncher:
        ParentImage|endswith: '\sllauncher.exe'
        Image|endswith: '\svchost.exe'
    selection_svchost:
        ParentImage|contains: '\AppData\Roaming\'
        Image|endswith: '\svchost.exe'
        CommandLine|contains: '-k'
    condition: 1 of selection_*
falsepositives:
    - Unlikely
level: critical

Stages and Predicates

Stage 0: condition

1 of selection_*

Stage 1: selection_sllauncher

selection_sllauncher:
    ParentImage|endswith: '\sllauncher.exe'
    Image|endswith: '\svchost.exe'

Stage 2: selection_svchost

selection_svchost:
    ParentImage|contains: '\AppData\Roaming\'
    Image|endswith: '\svchost.exe'
    CommandLine|contains: '-k'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
CommandLinematch
  • -k
Imageends_with
  • \svchost.exe corpus 23 (sigma 23)
ParentImageends_with
  • \sllauncher.exe
ParentImagematch
  • \AppData\Roaming\ corpus 2 (sigma 2)