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Description

This search is to detect a suspicious file creation of sqlite3.dll in %temp% folder. This behavior was seen in IcedID malware where it download sqlite module to parse browser database like for chrome or firefox to stole browser information related to bank, credit card or credentials.

  • Type: TTP
  • Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
  • Datamodel: Endpoint
  • Last Updated: 2021-08-03
  • Author: Teoderick Contreras, Splunk
  • ID: 0f216a38-f45f-11eb-b09c-acde48001122

Annotations

ATT&CK

ATT&CK

ID Technique Tactic
T1005 Data from Local System Collection
Kill Chain Phase
  • Exploitation
NIST
CIS20
CVE
1
2
3
4
5
`sysmon` EventCode=11 (TargetFilename = "*\\sqlite32.dll" OR TargetFilename = "*\\sqlite64.dll") (TargetFilename = "*\\temp\\*") 
|stats count min(_time) as firstTime max(_time) as lastTime by process_name TargetFilename EventCode ProcessId Image 
| `security_content_ctime(firstTime)` 
| `security_content_ctime(lastTime)` 
| `sqlite_module_in_temp_folder_filter`

Macros

The SPL above uses the following Macros:

:information_source: sqlite_module_in_temp_folder_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.

Required fields

List of fields required to use this analytic.

  • _time
  • process_name
  • TargetFilename
  • EventCode
  • ProcessId
  • Image

How To Implement

To successfully implement this search, you need to be ingesting logs with the process name, parent process, and command-line executions from your endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the Sysmon TA.

Known False Positives

unknown

Associated Analytic Story

RBA

Risk Score Impact Confidence Message
9.0 30 30 process $SourceImage$ create a file $TargetImage$ in host $Computer$

:information_source: The Risk Score is calculated by the following formula: Risk Score = (Impact * Confidence/100). Initial Confidence and Impact is set by the analytic author.

Reference

Test Dataset

Replay any dataset to Splunk Enterprise by using our replay.py tool or the UI. Alternatively you can replay a dataset into a Splunk Attack Range

source | version: 1