Published | JUMPSEC LABS

Detecting known DLL hijacking and named pipe token impersonation attacks with Sysmon

by xnand | Nov 13, 2020 | Detection, Jumpsec, Research

Recently we posted a bunch of advisories relating to Ivanti Unified Endpoint Manager, a couple of which are for vulnerabilities which can be used to achieve local privilege escalation. We will give a brief explanation of the vulnerabilities and an example of Sysmon configuration rules to log exploitation attempts, along with the rationale behind them so you can adapt them to your existing configuration if needed.

Advisory CVE-2020-13769 – Ivanti Unified Endpoint Manager SQL injection

A number of web components in Endpoint Manager do not properly sanitize user input when executing SQL queries, leaving the application vulnerable to injection attacks towards the underlying database. On a standard installation with default options, the account used to query the database is database administrator.

Advisory CVE-2020-13772 – Ivanti Unified Endpoint Manager system information disclosure

Ivanti Unified Endpoint Manager’s “ldcient” component expose information about the system that could be used in further attacks against the system.

A Defender’s Guide For Rootkit Detection: Episode 1 – Kernel Drivers

by rootkid8 | Apr 20, 2020 | Detection, Exploitation, Jumpsec

Recently JUMPSEC’s youngest red team researcher @_batsec_ raised the bar once more using rootkit techniques to universally evade Sysmon.

Bypassing Antivirus with Golang – Gopher it!

by warden | Jun 20, 2019 | Detection, Jumpsec

In this blog post, we’re going to detail a cool little trick we came across on how to bypass most antivirus products to get a Metepreter reverse shell on a target host. This all started when we came across a Github repository written in Golang, which on execution could inject shellcode into running processes. By simply generating a payload with msfvenom we tested it and found that it was easily...

Enhanced logging to detect common attacks on Active Directory– Part 1

by bugsbunny | Feb 6, 2019 | Detection, Jumpsec

In this blog post I am going to tackle the topic of detecting common attacks using Active Directory logs. It is important to understand the power of data in InfoSec world. Too much data means you’ll be spending rest of the week digging through millions of log entries to try and figure out what the adversary was up to. You can set filters to help you through this, however it can get...

Short introduction to Network Forensics and Indicators of Compromise (IoC)

by XoN | Jun 28, 2016 | Incident Response, Monitoring, Network Forensics, Network Tools, Pcap analysis, Research

“Indicator of compromise (IOC) in computer forensics is an artifact observed on a network or in an operating system that with high confidence indicates a computer intrusion. Typical IOCs are virus signatures and IP addresses, MD5 hashes of malware files or URLs or domain names of botnet command and control servers. After IOCs have been identified in a process of incident response and computer...

CVE 2015-7547 glibc getaddrinfo() DNS Vulnerability

by jstester007 | Mar 7, 2016 | Exploitation, Research, Security Bug

Hello w0rld! JUMPSEC researchers have spent some time on the glibc DNS vulnerability indexed as CVE 2015-7547 (It hasn’t got a cool name like GHOST unfortunately…). It appears to be a highly critical vulnerability and covers a large number of systems. It allows remote code execution by a stack-based overflow in the client side DNS resolver. In this post we would like to present our analysis....

Research and Development

by XoN | Jan 28, 2016 | Binary Analysis, Network Tools, Obfuscation, Research

Hello w0rld. On this post we would like to let you know our areas of research and the research projects that we are working on currently. For 2016 we are planning to develop tools that will be used in our tests. Our areas of interest can be highlighted as: AntiVirus Detection and Evasion techniques (sandbox detection, etc) Packers, anti-debugging, anti-disassembly and binary obfuscation Network...

Covert channels – (Mis)Using ICMP protocol for file transfers with scapy

by XoN | Apr 24, 2015 | Network Tools

Hello w0rld. In this post I will show how it is possible to (mis)use ICMP protocol for file transfers with scapy. “In computer security, a covert channel is a type of computer security attack that creates a capability to transfer information objects between processes that are not supposed to be allowed to communicate by the computer security policy.” Source: Wikipedia I have to give credit to...

Microsoft Onenote Image Caching Bug (Confidential Information Leakage)

by Observer | Mar 1, 2015 | Security Bug

Bug Summary A security bug in the Microsoft Onenote allows images placed in user-created password-protected sections to be cached persistently in the user profile temporary directory folder: C:\Users\%username%\AppData\Local\Temp. Analysing the content the temporary folder will reveal images that should be securely protected by Onenote. Bug Scope This has only been tested with Microsoft...

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JUMPSEC LABS

Detecting known DLL hijacking and named pipe token impersonation attacks with Sysmon

Advisory CVE-2020-13769 – Ivanti Unified Endpoint Manager SQL injection

Advisory CVE-2020-13772 – Ivanti Unified Endpoint Manager system information disclosure

A Defender’s Guide For Rootkit Detection: Episode 1 – Kernel Drivers

Bypassing Antivirus with Golang – Gopher it!

Short introduction to Network Forensics and Indicators of Compromise (IoC)

CVE 2015-7547 glibc getaddrinfo() DNS Vulnerability

Research and Development

Covert channels – (Mis)Using ICMP protocol for file transfers with scapy

Microsoft Onenote Image Caching Bug (Confidential Information Leakage)

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