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September 22, 2023
Severity High Analysis Summary Ducktail Malware is a malicious program designed by hackers to infiltrate computers and networks globally. Ducktail malware is typically delivered through a […]September 22, 2023Severity Medium Analysis Summary First discovered in 2016, Revenge RAT is a remote access trojan (RAT) designed to give an attacker complete control over an infected […]September 22, 2023Severity High Analysis Summary The Konni APT (Advanced Persistent Threat) group is a cyber espionage group that has been active since at least 2014. It is […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Platform
Managed Security Services
Managed Penetration Testing
Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.
Resources
September 22, 2023Severity High Analysis Summary Ducktail Malware is a malicious program designed by hackers to infiltrate computers and networks globally. Ducktail malware is typically delivered through a […]September 22, 2023Severity Medium Analysis Summary First discovered in 2016, Revenge RAT is a remote access trojan (RAT) designed to give an attacker complete control over an infected […]September 22, 2023Severity High Analysis Summary The Konni APT (Advanced Persistent Threat) group is a cyber espionage group that has been active since at least 2014. It is […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Rewterz Threat Advisory – Multiple Google Chrome Security Vulnerabilities
June 4, 2020Rewterz Threat Advisory – CVE-2020-3227 – Cisco IOx for IOS XE Software Privilege Escalation Vulnerability
June 4, 2020
Severity
High
Analysis Summary
Beginning in January 2020, a campaign was detected that employed advanced obfuscation to evade detection. Using Microsoft Excel hidden sheets, the malicious document is unable to be seen by many detection engines. Speculation is the documents are delivered via social engineering emails. Asking victims to enable editing and content allows the macros contained on the hidden sheets to execute a WinAPI function to download the next stage malware.
The macro worksheet is heavily obfuscated and will start with a number of “RUN” commands that eventually ends with several interesting commands such as “CALL” and “EXEC”.
The macro utilizes the Win32 API function to download the next stage.
Impact
- Information theft
- Exposure of sensitive data
Indicators of Compromise
SHA1
- F0fa0bccb67b0c01f238a5eca9c46b9faa0bd6a7
- 1d6f74390e8a00e28975ec5181fe18aab956e5b3
- 4cca909d440e7ce3626922db54872fba43b51855
- 3115d21f0bc774996e7eb925c8badfe8172ae781
- 1669b5553ef576c558bc6a49482a9c32d218641c
- Aa64141ae3d4706eddeccdacbbef413f173f26b6
- 7b6cabda9cfb7b23af2211d2a11ef9a504479a16
- 7ec3f150ca07ff1a67487eb7e74e17eaa15a1144
- F8aef0dac089067ca9024423eca9042f8b1ac845
- 164dff79a7afe7a74d8ff06a564e81d36df29286
- Fef9ab8c1df75fbcdb717d23a7f0f3a3a8512f16
- 24c898ad6e3107474cb3bfbe606aa8f562a6f76a
- B0d168485f482d4685c3d9f034171be457fd7b31
- C33ee864fc398ee9ae1f7994f1aa84101cd6a421
- 3479d044d78dc9a309e1b6ccd533e601235dbde5
- C33ee864fc398ee9ae1f7994f1aa84101cd6a421
- 3479d044d78dc9a309e1b6ccd533e601235dbde5
- 66b9c31b5ab8deccd4c3711515d8021232c1a9af
- 7848de9c2e505e418ae0b0f7d7fc9fae9f371197
- 6b0d60b336972892667e71e415e3c21407307dc1
- Afa0c9be4f05629e773c4304bbabeab2fd5befc8
- B0734e1b869db25b66c5f03ed50133519c222284
- A7b2badc79cc494eba7a0da8e13df49d226c4409
- C8c3be4745ad3b0d88c4a8566ac0c780c0ce17f6
- 2404a7c358629dca3839cef3ea18c5b30c778adc
Remediation
- Block all threat indicators at your respective controls.
- Always be suspicious about emails sent by unknown senders.
- Never click on the links/attachments sent by unknown senders.