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Newsletters: @RISK


@RISK provides a reliable weekly summary of (1) newly discovered attack vectors, (2) vulnerabilities with active new exploits, (3) insightful explanations of how recent attacks worked, and other valuable data

A key purpose of the @RISK is to provide the data that will ensure that the 20 Critical Controls (the US and UK benchmark for effective protection of networked systems) continue to be the most effective defenses for all known attack vectors. But since it is also valuable for security practitioners, SANS is making it available to the 145,000 security practitioners who have completed SANS security training and others at their organizations who hope to stay current with the offensive methods in use.

October 26, 2017
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@RISK: The Consensus Security Vulnerability Alert

Vol. 17, Num. 43

Providing a reliable, weekly summary of newly discovered attack vectors, vulnerabilities with active exploits, and explanations of how recent attacks worked

Archived issues may be found at http://www.sans.org/newsletters/at-risk

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CONTENTS:

NOTABLE RECENT SECURITY ISSUES
INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY
VULNERABILITIES FOR WHICH EXPLOITS ARE AVAILABLE
MOST PREVALENT MALWARE FILES 2017-10-17 - 2017-10-24

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TOP VULNERABILITY THIS WEEK: New Ransomware Variant "BadRabbit" Targets Systems in Ukraine and Russia

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TRAINING UPDATE

-- SANS Cyber Defense Initiative 2017 | Washington, DC | December 12-19 | https://www.sans.org/event/cyber-defense-initiative-2017

-- SANS Pen Test HackFest Summit & Training | Bethesda, MD | November 13-20 | https://www.sans.org/event/pen-test-hackfest-2017

-- SANS Sydney 2017 | November 13-25 | https://www.sans.org/event/sydney-2017

-- SANS San Francisco Winter 2017 | November 27-December 2 | https://www.sans.org/event/san-francisco-winter-2017

-- SANS London November 2017 | November 27-December 2 | https://www.sans.org/event/london-november-2017

-- SIEM & Tactical Analytics Summit & Training | Scottsdale, AZ | November 28-December 5 | https://www.sans.org/event/siem-tactical-analytics-summit-2017

-- SANS Amsterdam January 2018 | January 15-20 | https://www.sans.org/event/amsterdam-january-2018

-- SANS Secure Japan 2018 | February 19-March 3 | https://www.sans.org/event/sans-secure-japan-2018

-- SANS OnDemand and vLive Training | SANS Online Training - Get an iPad, a Samsung Galaxy Tab A or take $250 Off with OnDemand or vLive training through October 11. The SANS Training you want with the flexibility you need. https://www.sans.org/online-security-training/specials/

-- Can't travel? SANS offers online instruction for maximum flexibility

-- Live Daytime training with Simulcast - https://www.sans.org/simulcast

-- Evening training 2x per week for 6 weeks with vLive - https://www.sans.org/vlive

-- Anywhere, Anytime access for 4 months with OnDemand format - https://www.sans.org/ondemand/

-- Multi-week Live SANS training
Mentor - http://www.sans.org/u/X9
Contact mentor@sans.org

-- Looking for training in your own community?
Community - http://www.sans.org/u/Xo

Plus Austin, Miami, Munich, and Frankfurt, all in the next 90 days.
For a list of all upcoming events, on-line and live: http://www.sans.org/u/XN

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1) Awesome new eBook Hunt Evil: Your Practical Guide to Threat Hunting Download it here: http://www.sans.org/info/199120

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3) Join John Pescatore and Palo Alto Networks to discuss why a layered security approach doesn't work. http://www.sans.org/info/199130

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NOTABLE RECENT SECURITY ISSUES SELECTED BY THE TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP

Title: New Ransomware Variant "BadRabbit" Targets Systems in Ukraine and Russia
Description: A new ransomware variant has emerged primarily targeting audiences in Ukraine and Russia. This latest variant dubbed "BadRabbit" appears to be initially delivered via a drive-by download attacked designed to appear as a "Flash Player" update. Once systems are compromised, the malware appears to move laterally and propagate using a combination of an included list of weak credentials and a version of mimikatz, similar to what was used in NotPetya/Petrwrap/Nyetya. As this threat is still under investigation, details will be forthcoming.
Reference:
- https://securelist.com/bad-rabbit-ransomware/82851/
- https://www.welivesecurity.com/2017/10/24/bad-rabbit-not-petya-back/
- http://blog.talosintelligence.com/2017/10/bad-rabbit.html
Snort SID: Detection pending

Title: Researchers Disclose Vulnerability in ANSI X9.31 RNG, Could Allow Attackers to Decrypt Traffic
Description: Researchers have disclosed a vulnerability in the ANSI X9.31 Random Number Generator (RNG) that could allow an attacker to passively decrypt traffic that is encrypted using keys generated by X9.31 RNG. This vulnerability manifests if ANSI X9.31 RNG is used in conjunction with a hard-coded seed key, "output from the RNG is directly used to generate cryptographic keys", and some of the random numbers used to make the keys are transmitted unencrypted. Fortinet devices running FortiOS 4.3.0 to FortiOS 4.3.18 are known to be susceptible to this attack. Fortinet has released a software update to address the issue.
Reference: https://duhkattack.com/
Snort SID: N/A

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INTERESTING NEWS FROM AROUND THE SECURITY COMMUNITY

Canada's Communications Security Establishment Releases "Assemblyline", a malware detection and analysis tool
https://www.cse-cst.gc.ca/en/assemblyline

Let's Enhance! How we found @rogerkver's $1,000 wallet obfuscated private key
https://medium.freecodecamp.org/lets-enhance-how-we-found-rogerkver-s-1000-wallet-obfuscated-private-key-8514e74a5433

"Cyber Conflict" Decoy Document Used In Real Cyber Conflict
http://blog.talosintelligence.com/2017/10/cyber-conflict-decoy-document.html?f_l=s

Dell Lost Control of Key Customer Support Domain for a Month in 2017
https://krebsonsecurity.com/2017/10/dell-lost-control-of-key-customer-support-domain-for-a-month-in-2017/?

Windows Defender Exploit Guard: Reduce the attack surface against next-generation malware
https://blogs.technet.microsoft.com/mmpc/2017/10/23/windows-defender-exploit-guard-reduce-the-attack-surface-against-next-generation-malware/

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RECENT VULNERABILITIES FOR WHICH EXPLOITS ARE AVAILABLE COMPILED BY THE QUALYS VULNERABILITY RESEARCH TEAM

This is a list of recent vulnerabilities for which exploits are available. System administrators can use this list to help in prioritization of their remediation activities. The Qualys Vulnerability Research Team compiles this information based on various exploit frameworks, exploit databases, exploit kits and monitoring of internet activity.

ID: CVE-2017-8759
Title: Microsoft .NET Framework Remote Code Execution Vulnerability
Vendor: Microsoft
Description: A remote code execution vulnerability exists when Microsoft .NET Framework processes untrusted input. Microsoft is aware of a report that an exploit for CVE-2017-8759 exists in the wild and is being used in targeted attacks. Microsoft published a .NET security update to address this issue.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2017-9805
Title: Apache Struts REST plugin Remote Code Execution (S2-052)
Vendor: Apache Struts
Description: The REST Plugin is using a XStreamHandler with an instance of XStream for deserialization without any type filtering and this can lead to Remote Code Execution when deserializing XML payloads.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2017-0037
Title: Microsoft Internet Explorer Remote Code Execution (MS17-007)
Vendor: Microsoft
Description: Microsoft Internet Explorer 10 and 11 and Microsoft Edge have a type confusion issue in the Layout::MultiColumnBoxBuilder::HandleColumnBreakOnColumnSpanningElement function in mshtml.dll, which allows remote attackers to execute arbitrary code via vectors involving a crafted Cascading Style Sheets (CSS) token sequence and crafted JavaScript code that operates on a TH element.
CVSS v2 Base Score: 7.6 (AV:N/AC:H/Au:N/C:C/I:C/A:C)

ID: CVE-2017-0145
Title: Microsoft Windows SMB Remote Code Execution Vulnerability
Vendor: Microsoft
Description: The SMBv1 server in Microsoft Windows Vista SP2; Windows Server 2008 SP2 and R2 SP1; Windows 7 SP1; Windows 8.1; Windows Server 2012 Gold and R2; Windows RT 8.1; and Windows 10 Gold, 1511, and 1607; and Windows Server 2016 allows remote attackers to execute arbitrary code via crafted packets, aka "Windows SMB Remote Code Execution Vulnerability." This vulnerability is different from those described in CVE-2017-0143, CVE-2017-0144, CVE-2017-0146, and CVE-2017-0148.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2017-0290
Title: Microsoft Malware Protection Engine Remote Code Execution Vulnerability
Vendor: Microsoft
Description: NScript in mpengine in Microsoft Malware Protection Engine with Engine Version before 1.1.13704.0, as used in Windows Defender and other products, allows remote attackers to execute arbitrary code or cause a denial of service (type confusion and application crash) via crafted JavaScript code within any file scanned by this engine.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2017-3881
Title: Cisco IOS and IOS XE Software Cluster Management Protocol Remote Code Execution Vulnerability
Vendor: Cisco
Description: A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with elevated privileges. The Cluster Management Protocol utilizes Telnet internally as a signaling and command protocol between cluster members. The vulnerability is due to the combination of two factors: (1) the failure to restrict the use of CMP-specific Telnet options only to internal, local communications between cluster members and instead accept and process such options over any Telnet connection to an affected device; and (2) the incorrect processing of malformed CMP-specific Telnet options. An attacker could exploit this vulnerability by sending malformed CMP-specific Telnet options while establishing a Telnet session with an affected Cisco device configured to accept Telnet connections. An exploit could allow an attacker to execute arbitrary code and obtain full control of the device or cause a reload of the affected device. This affects Catalyst switches, Embedded Service 2020 switches, Enhanced Layer 2 EtherSwitch Service Module, Enhanced Layer 2/3 EtherSwitch Service Module, Gigabit Ethernet Switch Module (CGESM) for HP, IE Industrial Ethernet switches, ME 4924-10GE switch, RF Gateway 10, and SM-X Layer 2/3 EtherSwitch Service Module. Cisco Bug IDs: CSCvd48893.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2017-5638
Title: Apache Struts2 Input Validation Code Execution Vulnerability
Vendor: Apache
Description: The Jakarta Multipart parser in Apache Struts 2 2.3.x before 2.3.32 and 2.5.x before 2.5.10.1 mishandles file upload, which allows remote attackers to execute arbitrary commands via a #cmd= string in a crafted Content-Type HTTP header, as exploited in the wild in March 2017.
CVSS v2 Base Score: 10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

ID: CVE-2016-7892 Title: Adobe Flash Player Use-After-Free Code Execution Vulnerability
Vendor: Adobe
Description: Remote exploitation of a use-after-free vulnerability in Adobe's Flash Player could allow attackers to execute arbitrary code. Adobe is aware of a report that an exploit for CVE-2016-7892 exists in the wild, and is being used in limited targeted attacks.
CVSS v2 Base Score: 9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C)

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MOST PREVALENT MALWARE FILES 2017-10-17 - 2017-10-24: COMPILED BY TALOS SECURITY INTELLIGENCE AND RESEARCH GROUP

SHA 256: c3e530cc005583b47322b6649ddc0dab1b64bcf22b124a492606763c52fb048f
MD5: e2ea315d9a83e7577053f52c974f6a5a
VirusTotal: https://www.virustotal.com/file/c3e530cc005583b47322b6649ddc0dab1b64bcf22b124a492606763c52fb048f/analysis/#additional-info
Typical Filename: Tempmf582901854.exe
Claimed Product: (none)
Detection Name: W32.C3E530CC00-95.SBX.TG

SHA 256: 87afd627b678da78d879dfe11c147b10f5db6e07cd16e5728ca33579e73bf89f
MD5: 515ea84f7ca8f59f7bb4fb5714913a72
VirusTotal: https://www.virustotal.com/file/87afd627b678da78d879dfe11c147b10f5db6e07cd16e5728ca33579e73bf89f/analysis/#additional-info
Typical Filename: helperamc.zip
Claimed Product: Advanced Mac Cleaner
Detection Name: W32.87AFD627B6-95.SBX.TG

SHA 256: f8ba36c6114b3a5f4a00187cdd61fe909d3f53c949a3630251c3fcc30e679b04
MD5: d3d68cd930e18e99b63296922eacd912
VirusTotal: https://www.virustotal.com/file/f8ba36c6114b3a5f4a00187cdd61fe909d3f53c949a3630251c3fcc30e679b04/analysis/#additional-info
Typical Filename: Payment Details - 1260CFF.doc
Claimed Product: N/A
Detection Name: W32.F8BA36C611-100.SBX.TG

SHA 256: cc0ea91c5d6110b440e5823726c63b862ff150b7ee3f5d3492a5d64dc47d2545
MD5: b819e4d414df495dbccaa4e4e9ed534e
VirusTotal: https://www.virustotal.com/file/cc0ea91c5d6110b440e5823726c63b862ff150b7ee3f5d3492a5d64dc47d2545/analysis/#additional-info
Typical Filename: lsmosee.exe
Claimed Product: (unknown)
Detection Name: W32.GenericKD:Attribute.20ls.1201

SHA 256: 68e5cbd64142c91f07fc70af67c654c0061b6407e449cc95e5000165c065550a
MD5: b524f56538908b1da51c53a5f0d98a77
VirusTotal: https://www.virustotal.com/file/68e5cbd64142c91f07fc70af67c654c0061b6407e449cc95e5000165c065550a/analysis/#additional-info
Typical Filename: Request for qoutation.exe
Claimed Product: (unknown)
Detection Name: W32.68E5CBD641-95.SBX.TG

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