payload – Computer Security Articles

GandCrab 101: All about the most widely distributed ransomware of the moment

March 5, 2019 admin 101, Bot, emotet, fusion, gandcrab, JBOSS, lateral, maldocs, malspam, malware, Oracle, payload, PDF, Sophos101, SophosLabs, SophosLabs Uncut, spam, Tomcat, vulnerabilities, WebLogic, Word, XML

Credit to Author: Luca Nagy| Date: Tue, 05 Mar 2019 14:00:10 +0000

In this Sophos101 report, we’ll give you the lowdown on what you need to know about this, unfortunately, widely disseminated malware.<img src=”http://feeds.feedburner.com/~r/sophos/dgdY/~4/QbQ2o1iJn68″ height=”1″ width=”1″ alt=””/>

Security Sophos

Emotet 101, stage 5: a delivery vehicle for more malware

March 5, 2019 admin 101, Bot, emotet, maldocs, malspam, malware, payload, PDF, Sophos101, SophosLabs, SophosLabs Uncut, spam, Word, XML

Credit to Author: Andrew Brandt| Date: Tue, 05 Mar 2019 13:59:17 +0000

By SophosLabs Research Emotet is a botnet in its own right, one so prolific and dominant that the United States CERT, the body tasked with tracking cyberthreats to the country, named Emotet in July, 2018 “among the most costly and destructive malware” to affect governments, enterprises and organizations large and small, and individual computer users. […]<img src=”http://feeds.feedburner.com/~r/sophos/dgdY/~4/A9JdHdI4I94″ height=”1″ width=”1″ alt=””/>

Security Sophos

Emotet 101, stage 4: command and control

March 5, 2019 admin 101, Bot, emotet, maldocs, malspam, malware, payload, PDF, Sophos101, SophosLabs, SophosLabs Uncut, spam, Word, XML

Credit to Author: Andrew Brandt| Date: Tue, 05 Mar 2019 13:58:33 +0000

By SophosLabs Research The Emotet family could not do what it does without receiving a constant stream of instructions from its owners, or in the absence of the detailed level of feedback about its operating environment each bot sends home from an infected host machine. It also uses huge numbers of compromised websites that belong […]<img src=”http://feeds.feedburner.com/~r/sophos/dgdY/~4/tuvtIYBP4JI” height=”1″ width=”1″ alt=””/>

Security Sophos

Emotet 101, stage 3: The Emotet executable

March 5, 2019 admin 101, Bot, emotet, maldocs, malspam, malware, payload, PDF, Sophos101, SophosLabs, SophosLabs Uncut, spam, Word, XML

Credit to Author: hajnalkakope| Date: Tue, 05 Mar 2019 13:57:54 +0000

By SophosLabs Research Emotet’s arrival is usually preceded by a deceptive spam email, which has a malicious attachment. Opening the attachment starts a process which can lead to an Emotet infection. The Emotet application is an evolved binary, in the sense that it has gone through thousands of iterations over its existence. Its presence as […]<img src=”http://feeds.feedburner.com/~r/sophos/dgdY/~4/CfniXxu0bac” height=”1″ width=”1″ alt=””/>

Security Sophos

Emotet 101, stage 2: The malicious attachment and killchain

March 5, 2019 admin 101, Bot, emotet, maldocs, malspam, malware, payload, PDF, Sophos101, SophosLabs, SophosLabs Uncut, spam, Word, XML

Credit to Author: Andrew Brandt| Date: Tue, 05 Mar 2019 13:56:43 +0000

By SophosLabs Research The Emotet malware family is in a constant state of evolution and change. From day to day or week to week, the malware’s creators and distributors take an active role in changing up the killchain – the sequence of events that begins with a victim receiving a malicious file attachment, and ends […]<img src=”http://feeds.feedburner.com/~r/sophos/dgdY/~4/C8Iq5Z7cCTc” height=”1″ width=”1″ alt=””/>

Security Sophos

Emotet 101, stage 1: The spam lure

March 5, 2019 admin 101, Bot, emotet, maldocs, malspam, malware, payload, PDF, Sophos101, SophosLabs, SophosLabs Uncut, spam, Word, XML

Credit to Author: Andrew Brandt| Date: Tue, 05 Mar 2019 13:55:43 +0000

By SophosLabs Research Emotet operates on a mass scale. Everything it does, it does in bulk. A typical infection begins when the victim receives a specially crafted spam email. Emotet’s creators send these out by the thousands and, in some cases, the bots themselves send more. The lures employ mass-created malicious document files. The payload […]<img src=”http://feeds.feedburner.com/~r/sophos/dgdY/~4/7i2oOO4OT8A” height=”1″ width=”1″ alt=””/>

MalwareBytes Security

Reversing malware in a custom format: Hidden Bee elements

August 30, 2018 admin custom malware, hidden bee, hidden bee miner, malware, payload, reverse engineering, reversing malware, Threat analysis

Credit to Author: hasherezade| Date: Thu, 30 Aug 2018 15:41:34 +0000

When we recently analyzed payloads related to Hidden Bee (dropped by the Underminer EK), we noticed something unusual. After reversing the malware, we discovered that its authors actually created their own executable format. Follow our step-by-step analysis for a closer look.

Categories:

Tags: custom malware hidden bee hidden bee miner payload reverse engineering reversing malware

MalwareBytes Security

A .NET malware abusing legitimate ffmpeg

July 12, 2017 admin .NET, ffmpeg, malware, payload, Rat, Threat analysis

Credit to Author: Malwarebytes Labs| Date: Wed, 12 Jul 2017 15:00:52 +0000

There is a growing trend among malware authors to incorporate legitimate applications in their malicious package. This time, we encountered a malware downloading a legitimate ffmpeg.

Categories:

Tags: .NET ffmpeg malware payload rat

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