SANS Internet Stormcenter Daily Cyber Security Podcast (Stormcast)

Johannes B. Ullrich
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Apr 7, 2023 • 7min

ISC StormCast for Friday, April 7th, 2023

Self Extracting Archives https://www.crowdstrike.com/blog/self-extracting-archives-decoy-files-and-their-hidden-payloads/ loldrivers https://www.loldrivers.io Trellix Privilege Escalation https://kcm.trellix.com/corporate/index?page=content&id=SB10396 HP LaserJet Vuln. https://support.hp.com/us-en/document/ish_7905330-7905358-16/hpsbpi03838
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Apr 6, 2023 • 7min

ISC StormCast for Thursday, April 6th, 2023

Exploration of DShield Cowrie Data with jq https://isc.sans.edu/diary/Exploration%20of%20DShield%20Cowrie%20Data%20with%20jq/29714 NEXX Garage Door Vulnerability https://medium.com/@samsabetan/the-uninvited-guest-idors-garage-doors-and-stolen-secrets-e4b49e02dadc OneNote Changes https://learn.microsoft.com/en-us/deployoffice/security/onenote-extension-block MSFT Changes to Auto-Update https://learn.microsoft.com/en-us/windows/release-health/windows-message-center#3060 NPM Spam DDoS Attacks https://www.helpnetsecurity.com/2023/04/05/flood-of-malicious-packages-results-in-npm-registry-dos/
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Apr 5, 2023 • 6min

ISC StormCast for Wednesday, April 5th, 2023

Analyzing the efile.com Malware https://isc.sans.edu/diary/Analyzing+the+efilecom+Malware+efail/29712 ALPHV Ransomware Targets Backup Installations https://www.mandiant.com/resources/blog/alphv-ransomware-backup Sophos Web Appliance Vulnerability (and EoL) https://www.sophos.com/en-us/security-advisories/sophos-sa-20230404-swa-rce Zimbra Exploited in Targeted Attacks https://www.proofpoint.com/us/blog/threat-insight/exploitation-dish-best-served-cold-winter-vivern-uses-known-zimbra-vulnerability
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Apr 4, 2023 • 8min

ISC StormCast for Tuesday, April 4th, 2023

efile.com compromise https://isc.sans.edu/forums/diary/Supply%20Chain%20Compromise%20or%20False%20Positive%3A%20The%20Intriguing%20Case%20of%20efile.com%20%5Bupdated%20-%20confirmed%20malicious%20code%5D/29708/ Western Digital MyCloud Breach https://www.bleepingcomputer.com/news/security/western-digital-discloses-network-breach-my-cloud-service-down/ 3CX Compromise Affected Cryptocoin Exchanges https://securelist.com/gopuram-backdoor-deployed-through-3cx-supply-chain-attack/109344/
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Apr 3, 2023 • 6min

ISC StormCast for Monday, April 3rd, 2023

Use of X-Frame-Options and CSP frame-ancestors security headers https://isc.sans.edu/diary/Use%20of%20X-Frame-Options%20and%20CSP%20frame-ancestors%20security%20headers%20on%201%20million%20most%20popular%20domains/29698 oledump supporting MSI Files https://isc.sans.edu/diary/Update+oledump+MSI+Files/29700/ 3CX Update https://www.3cx.com/blog/news/chrome-blocks-latest-msi/ PinDuoDuo App shows anomalous behaviour https://edition.cnn.com/2023/04/02/tech/china-pinduoduo-malware-cybersecurity-analysis-intl-hnk/index.html
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Mar 31, 2023 • 6min

ISC StormCast for Friday, March 31st, 2023

Malicious 3CX Dekstop App Update Lifestream (Friday March 31st 1400 ET, 1800 UTC) https://www.youtube.com/watch?v=cCf3Km_j5bY 3CX Update: https://www.3cx.com/blog/news/desktopapp-security-alert/ SentinelOne: https://www.sentinelone.com/blog/smoothoperator-ongoing-campaign-trojanizes-3cx-software-in-software-supply-chain-attack/ Objective-See Blog Post: https://objective-see.org/blog/blog_0x73.html Crowdstrike: https://www.crowdstrike.com/blog/crowdstrike-detects-and-prevents-active-intrusion-campaign-targeting-3cxdesktopapp-customers/ Bypassing PowerShell Strong Obfuscation https://isc.sans.edu/diary/Bypassing%20PowerShell%20Strong%20Obfuscation/29692
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Mar 30, 2023 • 5min

ISC StormCast for Thursday, March 30th, 2023

Extracting Multiple Streams From OLE Files https://isc.sans.edu/diary/Extracting%20Multiple%20Streams%20From%20OLE%20Files/29688 3CXDesktop App Compromise https://www.crowdstrike.com/blog/crowdstrike-detects-and-prevents-active-intrusion-campaign-targeting-3cxdesktopapp-customers/ Microsoft Defender False Positives https://twitter.com/MSFT365Status/status/1641048649525260289 https://admin.microsoft.com/Adminportal/Home?ref=/servicehealth/:/alerts/DZ534539 (requires login) Active Exploitation of IBM Aspera Faspex CVE-2022-47986 https://www.rapid7.com/blog/post/2023/03/28/etr-active-exploitation-of-ibm-aspera-faspex-cve-2022-47986/ QNAP Patch for sudo vulnerablity https://www.qnap.com/en/security-advisory/qsa-23-11
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Mar 29, 2023 • 5min

ISC StormCast for Wednesday, March 29th, 2023

Network Data Collector Placement Makes a Difference https://isc.sans.edu/diary/Network%20Data%20Collector%20Placement%20Makes%20a%20Difference/29664 Throttling and Blocking Email from Persistently Vulnerable Exchange Servers to Exchange Online https://techcommunity.microsoft.com/t5/exchange-team-blog/throttling-and-blocking-email-from-persistently-vulnerable/ba-p/3762078 Bypassing Wi-Fi Encryption by Manipulating Transmit Queues https://papers.mathyvanhoef.com/usenix2023-wifi.pdf
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Mar 28, 2023 • 5min

ISC StormCast for Tuesday, March 28th, 2023

Another Malicious HTA File Analysis Part 1 https://isc.sans.edu/diary/Another%20Malicious%20HTA%20File%20Analysis%20-%20Part%201/29674 Apple Updates Everything https://isc.sans.edu/diary/Apple%20Updates%20Everything%20%28including%20Studio%20Display%29/29682 MacStealer Malware Exfiltrates Mac Secrets https://www.uptycs.com/blog/macstealer-command-and-control-c2-malware
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Mar 27, 2023 • 5min

ISC StormCast for Monday, March 27th, 2023

Update for Windows Snipping Tool https://isc.sans.edu/diary/Microsoft%20Released%20an%20Update%20for%20Windows%20Snipping%20Tool%20Vulnerability/29670 GitHub Rotates SSH Keys https://github.blog/2023-03-23-we-updated-our-rsa-ssh-host-key/ redis-py vulnerability leads to mixed up sessions, affects ChatGPT https://openai.com/blog/march-20-chatgpt-outage Linux Tech Tips YouTube Hack https://www.theverge.com/2023/3/23/23653115/linus-tech-tips-youtube-hack-crypto-scam https://isc.sans.edu/diary/Elon%20Musk%20Themed%20Crypto%20Scams%20Flooding%20YouTube%20Today/29434 CyberChef Update https://github.com/gchq/CyberChef/wiki/Character-encoding,-EOL-separators,-and-editor-features

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