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Merge pull request #796 from shreyamalviya/T1099 

Add T1099 attack technique (timestomping)
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Shreya Malviya 2020-08-31 17:21:56 +05:30 committed by GitHub
parent db46134a60 fc7d5bf1b3
commit 836647eadf
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GPG Key ID: 4AEE18F83AFDEB23
12 changed files with 146 additions and 10 deletions
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1
monkey/common/data/post_breach_consts.py
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@ -6,6 +6,7 @@ POST_BREACH_HIDDEN_FILES = "Hide files and directories"
POST_BREACH_TRAP_COMMAND = "Execute command when a particular signal is received"
POST_BREACH_SETUID_SETGID = "Setuid and Setgid"
POST_BREACH_JOB_SCHEDULING = "Schedule jobs"
POST_BREACH_TIMESTOMPING = "Modify files' timestamps"
POST_BREACH_SIGNED_SCRIPT_PROXY_EXEC = "Signed script proxy execution"
POST_BREACH_ACCOUNT_DISCOVERY = "Account discovery"
POST_BREACH_CLEAR_CMD_HISTORY = "Clear command history"

12
monkey/infection_monkey/post_breach/actions/timestomping.py Normal file
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@ -0,0 +1,12 @@
from common.data.post_breach_consts import POST_BREACH_TIMESTOMPING
from infection_monkey.post_breach.pba import PBA
from infection_monkey.post_breach.timestomping.timestomping import \
get_timestomping_commands
class Timestomping(PBA):
def __init__(self):
linux_cmds, windows_cmds = get_timestomping_commands()
super().__init__(POST_BREACH_TIMESTOMPING,
linux_cmd=linux_cmds,
windows_cmd=windows_cmds)

14
monkey/infection_monkey/post_breach/timestomping/linux/timestomping.py Normal file
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@ -0,0 +1,14 @@
TEMP_FILE = 'monkey-timestomping-file.txt'
TIMESTAMP_EPOCH = '197001010000.00'
def get_linux_timestomping_commands():
return [
f'echo "Successfully changed a file\'s modification timestamp" > {TEMP_FILE} && '
f'touch -m -t {TIMESTAMP_EPOCH} {TEMP_FILE} && '
f'cat {TEMP_FILE} ; '
f'rm {TEMP_FILE} -f'
]
# Commands' source: https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1070.006/T1070.006.md

10
monkey/infection_monkey/post_breach/timestomping/timestomping.py Normal file
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@ -0,0 +1,10 @@
from infection_monkey.post_breach.timestomping.linux.timestomping import \
get_linux_timestomping_commands
from infection_monkey.post_breach.timestomping.windows.timestomping import \
get_windows_timestomping_commands
def get_timestomping_commands():
linux_cmds = get_linux_timestomping_commands()
windows_cmds = get_windows_timestomping_commands()
return linux_cmds, windows_cmds

13
monkey/infection_monkey/post_breach/timestomping/windows/timestomping.ps1 Normal file
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@ -0,0 +1,13 @@
$TEMP_FILE = 'monkey-timestomping-file.txt'
$TIMESTAMP_EPOCH = '01/01/1970 00:00:00'
# create temporary file
New-Item -Path $TEMP_FILE -Force | Out-Null
Set-Content $TEMP_FILE -Value "Successfully changed a file's modification timestamp" -Force | Out-Null
# attempt to change modification timestamp
Get-ChildItem $TEMP_FILE | % { $_.LastWriteTime = $TIMESTAMP_EPOCH }
Get-Content $TEMP_FILE
# remove temporary file
Remove-Item $TEMP_FILE -Force -ErrorAction Ignore

8
monkey/infection_monkey/post_breach/timestomping/windows/timestomping.py Normal file
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@ -0,0 +1,8 @@
TEMP_FILE = 'monkey-timestomping-file.txt'
def get_windows_timestomping_commands():
return 'powershell.exe infection_monkey/post_breach/timestomping/windows/timestomping.ps1'
# Commands' source: https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1070.006/T1070.006.md

21
monkey/monkey_island/cc/services/attack/attack_report.py
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@ -11,16 +11,16 @@ from monkey_island.cc.services.attack.technique_reports import (T1003, T1005,
T1065, T1075,
T1082, T1086,
T1087, T1090,
T1105, T1106,
T1107, T1110,
T1129, T1136,
T1145, T1146,
T1154, T1156,
T1158, T1166,
T1168, T1188,
T1197, T1210,
T1216, T1222,
T1504)
T1099, T1105,
T1106, T1107,
T1110, T1129,
T1136, T1145,
T1146, T1154,
T1156, T1158,
T1166, T1168,
T1188, T1197,
T1210, T1216,
T1222, T1504)
from monkey_island.cc.services.reporting.report_generation_synchronisation import \
safe_generate_attack_report
@ -60,6 +60,7 @@ TECHNIQUES = {'T1210': T1210.T1210,
'T1166': T1166.T1166,
'T1168': T1168.T1168,
'T1053': T1053.T1053,
'T1099': T1099.T1099,
'T1216': T1216.T1216,
'T1087': T1087.T1087,
'T1146': T1146.T1146

9
monkey/monkey_island/cc/services/attack/attack_schema.py
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@ -195,6 +195,15 @@ SCHEMA = {
"link": "https://attack.mitre.org/techniques/T1222",
"description": "Adversaries may modify file permissions/attributes to evade intended DACLs."
},
"T1099": {
"title": "Timestomping",
"type": "bool",
"value": True,
"necessary": False,
"link": "https://attack.mitre.org/techniques/T1099",
"description": "Adversaries may modify file time attributes to hide new/changes to existing "
"files to avoid attention from forensic investigators or file analysis tools."
},
"T1216": {
"title": "Signed script proxy execution",
"type": "bool",

13
monkey/monkey_island/cc/services/attack/technique_reports/T1099.py Normal file
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@ -0,0 +1,13 @@
from common.data.post_breach_consts import POST_BREACH_TIMESTOMPING
from monkey_island.cc.services.attack.technique_reports.pba_technique import \
PostBreachTechnique
__author__ = "shreyamalviya"
class T1099(PostBreachTechnique):
tech_id = "T1099"
unscanned_msg = "Monkey didn't try changing any file's time attributes."
scanned_msg = "Monkey tried changing a file's time attributes but failed."
used_msg = "Monkey successfully changed a file's time attributes."
pba_names = [POST_BREACH_TIMESTOMPING]

9
monkey/monkey_island/cc/services/config_schema/definitions/post_breach_actions.py
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@ -71,6 +71,15 @@ POST_BREACH_ACTIONS = {
"info": "Attempts to create a scheduled job on the system and remove it.",
"attack_techniques": ["T1168", "T1053"]
},
{
"type": "string",
"enum": [
"Timestomping"
],
"title": "Timestomping",
"info": "Creates a temporary file and attempts to modify its time attributes. Removes the file afterwards.",
"attack_techniques": ["T1099"]
},
{
"type": "string",
"enum": [

1
monkey/monkey_island/cc/services/config_schema/monkey.py
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@ -68,6 +68,7 @@ MONKEY = {
"TrapCommand",
"ChangeSetuidSetgid",
"ScheduleJobs",
"Timestomping",
"AccountDiscovery"
]
},

45
monkey/monkey_island/cc/ui/src/components/attack/techniques/T1099.js Normal file
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@ -0,0 +1,45 @@
import React from 'react';
import ReactTable from 'react-table';
import {renderMachineFromSystemData, ScanStatus} from './Helpers';
import MitigationsComponent from './MitigationsComponent';
class T1099 extends React.Component {
constructor(props) {
super(props);
}
static getColumns() {
return ([{
columns: [
{ Header: 'Machine',
id: 'machine',
accessor: x => renderMachineFromSystemData(x.machine),
style: {'whiteSpace': 'unset'}},
{ Header: 'Result',
id: 'result',
accessor: x => x.result,
style: {'whiteSpace': 'unset'}}
]
}])
}
render() {
return (
<div>
<div>{this.props.data.message}</div>
<br/>
{this.props.data.status === ScanStatus.USED ?
<ReactTable
columns={T1099.getColumns()}
data={this.props.data.info}
showPagination={false}
defaultPageSize={this.props.data.info.length}
/> : ''}
<MitigationsComponent mitigations={this.props.data.mitigations}/>
</div>
);
}
}
export default T1099;