Detection rules › Splunk

Sqlite Module In Temp Folder

Status
production
Severity
medium
Group by
action, dest, file_name, process_guid, process_id, target_filename, user_id, vendor_product
Author
Teoderick Contreras, Splunk
Source
github.com/splunk/security_content

The following analytic detects the creation of sqlite3.dll files in the %temp% folder. It leverages Sysmon EventCode 11 to identify when these files are written to the temporary directory. This activity is significant because it is associated with IcedID malware, which uses the sqlite3 module to parse browser databases and steal sensitive information such as banking details, credit card information, and credentials. If confirmed malicious, this behavior could lead to significant data theft and compromise of user accounts.

Known false positives

  • No false positives have been identified at this time.

MITRE ATT&CK coverage

TacticTechniques
Collection

Telemetry coverage

ProviderRecord / event type
SysmonEvent ID 11: FileCreate

Rule body

name: Sqlite Module In Temp Folder
id: 0f216a38-f45f-11eb-b09c-acde48001122
version: 11
creation_date: '2021-08-05'
modification_date: '2026-05-13'
author: Teoderick Contreras, Splunk
status: production
type: TTP
description: The following analytic detects the creation of sqlite3.dll files in the %temp% folder. It leverages Sysmon EventCode 11 to identify when these files are written to the temporary directory. This activity is significant because it is associated with IcedID malware, which uses the sqlite3 module to parse browser databases and steal sensitive information such as banking details, credit card information, and credentials. If confirmed malicious, this behavior could lead to significant data theft and compromise of user accounts.
data_source:
    - Sysmon EventID 11
search: '`sysmon` EventCode=11 (TargetFilename = "*\\sqlite32.dll" OR TargetFilename = "*\\sqlite64.dll") (TargetFilename = "*\\temp\\*") | stats count min(_time) as firstTime max(_time) as lastTime by action dest file_name file_path  process_guid process_id user_id vendor_product | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `sqlite_module_in_temp_folder_filter`'
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: No false positives have been identified at this time.
references:
    - https://www.cisecurity.org/insights/white-papers/security-primer-icedid
finding:
    title: Process creates a file $file_name$ in host $dest$
    entity:
        field: dest
        type: system
        score: 50
analytic_story:
    - IcedID
    - Lokibot
asset_type: Endpoint
mitre_attack_id:
    - T1005
product:
    - Splunk Enterprise
    - Splunk Enterprise Security
    - Splunk Cloud
category: endpoint
security_domain: endpoint

Stages and Predicates

Stage 1: search

`sysmon` EventCode=11 (TargetFilename = "*\\sqlite32.dll" OR TargetFilename = "*\\sqlite64.dll") (TargetFilename = "*\\temp\\*")

Stage 2: stats

| stats count min(_time) as firstTime max(_time) as lastTime by action dest file_name file_path  process_guid process_id user_id vendor_product

Stage 3: search

| `security_content_ctime(firstTime)`

Stage 4: search

| `security_content_ctime(lastTime)`

Stage 5: search

| `sqlite_module_in_temp_folder_filter`

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
EventCodeeq
  • 11 corpus 26 (splunk 24, kusto 2)
field:"EventID" kind:eq value:"11"
TargetFilenameeq
  • "*\\sqlite32.dll"
  • "*\\sqlite64.dll"
  • "*\\temp\\*" corpus 5 (splunk 5)
field:"TargetFilename" kind:eq