Tag: INFOSEC
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A Quick Look at ELF Bifrose (Part 1)
Bifrose or Bifrost is a backdoor initially targeting Windows systems with a long history. First identified in the early 2000’s, it is believed a hacking group (likely BlackTech), purchased the source code or gained access to it around 2010, and enhanced the malware for use in its own campaigns. BlackTech has long targeted both Windows […]
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So Long (Go)Daddy | Tracking BlackTech Infrastructure
Summary BlackTech has built a reputation relying on (much to the delight of defenders) tech-themed domains and predictable registration patterns. Recent reporting linking malicious domains to the actor suggests these patterns may be fading, at least for the time being signifying a departure from the previous infrastructure configuration. Items to Note Background BlackTech, a.k.a. Huapi, […]
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Analyzing Manjusaka Infrastructure
21 August 2022 Recently, Avast tweeted a GitHub link of indicators of compromise (IOC) linked to the Manjusaka Framework. Cisco Talos released a blog earlier this month covering the framework in great detail, so I will not rehash their great work here. https://blog.talosintelligence.com/2022/08/manjusaka-offensive-framework.html Self-admittedly, I briefly glanced over the detection rules and scripts and immediately […]
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Overview of AppleSeed Dropper
02 June 2022 Summary The Kimsuky APT Group has routinely utilized the AppleSeed Backdoor to target various entities within South Korea, mainly for the purposes of espionage. While phishing still remains the primary vector of delivering the backdoor, over the past year, Kimsuky has gone to great lengths to disguise its attacks, utilizing numerous types […]
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Analyzing the Royal Road to Space Pirates
26 May 2022 While the actual blog post has been difficult to access for some, Positive Technologies released research on the Space Pirates APT group that has been spotted intruding on government, IT, and critical infrastructure networks in Russia, Georgia, and Mongolia. Believed to be operating since at least 2019, the Space Pirates group has […]
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Shortcut to Windows Update
Summary On January 27, 2022, Malwarebytes Labs shared an article covering new tactics including abusing the Windows Update Client for code executing believed to be the work of Lazarus. The purpose of this post will be to cover possible detection points for defenders to identify adversaries misusing the Windows Update Client. Please give the blog […]
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Info-Stealing Tool Posing As Naver OTP
Summary SHA256: 3275f42c85c9e2fcb80d1f8c1c6227c2bcde9c0e719905ddbd2ca7373c6a8ec6 Filename: UpHelpers.exe Size: 3.41MB Extension: EXE Compilation Timestamp: 2022-01-05 23:41:20 Sandbox analysis: https://tria.ge/220118-emrgjsgfb7 UpHelpers.exe is an information-stealing/reconnaissance tool disguised as a Naver One Time Password, (OTP) generator app. Naver is a South Korean web portal that first debuted in 1999 and offers a number of services. The tool collects drive and directory […]
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A “GULP” of PlugX
Often attributed to Chinese-speaking threat actors, PlugX a remote access trojan(RAT), was identified by security researchers in 2012. With several variants of the RAT identified by vendors over the year, many techniques used to compromise systems have remained the same. While perusing public malware sandboxes for interesting new samples, I stumbled upon a Windows executable […]
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