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The DFIR Report

Real Intrusions by Real Attackers, The Truth Behind the Intrusion

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Thursday, May 26, 2022
Exchange Exploit Leads to Domain Wide Ransomware
APT35 exploit Fast Reverse Proxy Plink ProxyShell ransomware

Exchange Exploit Leads to Domain Wide Ransomware

November 15, 2021

Intro In late September, we observed an intrusion in which initial access was gained by the threat actor exploiting multiple vulnerabilities in Microsoft Exchange. The threat actors in this case … Read More

From Zero to Domain Admin
cobaltstrike exploit hancitor

From Zero to Domain Admin

November 1, 2021

Intro This report will go through an intrusion from July that began with an email, which included a link to Google’s Feed Proxy service that was used to download a … Read More

IcedID to XingLocker Ransomware in 24 hours
adfind cobaltstrike icedid mountlocker xinglocker

IcedID to XingLocker Ransomware in 24 hours

October 18, 2021

Intro Towards the end of July, we observed an intrusion that began with IcedID malware and ended in XingLocker ransomware, a Mountlocker variant. XingLocker made its first appearance in early … Read More

BazarLoader and the Conti Leaks
adfind bazar cobaltstrike

BazarLoader and the Conti Leaks

October 4, 2021

Intro In July, we observed an intrusion that started from a BazarLoader infection and lasted approximately three days. The threat actor’s main priority was to map the domain network, while … Read More

BazarLoader to Conti Ransomware in 32 Hours
bazar cobaltstrike conti

BazarLoader to Conti Ransomware in 32 Hours

September 13, 2021

Intro Conti is a top player in the ransomware ecosystem, being listed as 2nd overall in the Q2 2021 Coveware ransomware report. The groups deploying this RaaS have only grown … Read More

Cobalt Strike, a Defender’s Guide
cobaltstrike Tools

Cobalt Strike, a Defender’s Guide

August 29, 2021

Intro In our research, we expose adversarial Tactics, Techniques and Procedures (TTPs) as well as the tools they use to execute their mission objectives. In most of our cases, we … Read More

Trickbot Leads Up to Fake 1Password Installation
cobaltstrike trickbot

Trickbot Leads Up to Fake 1Password Installation

August 16, 2021

Intro  Over the past years, Trickbot has established itself as modular and multifunctional malware. Initially focusing on bank credential theft, the Trickbot operators have extended its capabilities. More recently, Trickbot … Read More

BazarCall to Conti Ransomware via Trickbot and Cobalt Strike
adfind BazarCall cobaltstrike conti ransomware trickbot

BazarCall to Conti Ransomware via Trickbot and Cobalt Strike

August 1, 2021

Intro This report will go through an intrusion that went from an Excel file to domain wide ransomware. The threat actors used BazarCall to install Trickbot in the environment which … Read More

IcedID and Cobalt Strike vs Antivirus
adfind cobaltstrike icedid

IcedID and Cobalt Strike vs Antivirus

July 19, 2021

Intro Although IcedID was originally discovered back in 2017, it did not gain in popularity until the latter half of 2020.  We have now analyzed a couple ransomware cases in … Read More

Hancitor Continues to Push Cobalt Strike
cobaltstrike hancitor

Hancitor Continues to Push Cobalt Strike

June 28, 2021

First observed in 2014, Hancitor (also known as Chanitor and Tordal) is a downloader trojan that has been used to deliver multiple different malware such as Pony, Vawtrak, and DELoader. … Read More

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