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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 Alert – Agent Tesla Malware – IOCs
June 30, 2020Rewterz Threat Alert – GuLoader: a Shellcode-based Downloader
June 30, 2020
Severity
Medium
Analysis Summary
A new macOS malware dropper responsible for the installation of the VindInstaller.B adware is seen being distributed. The initial payload is a DMG disk image containing a shell script, which is becoming an increasingly common technique for installation by macOS malware. This shell script contains a compressed application bundle which will be extracted on execution. A temporary directory is created into which the decompressed bundle is dropped and subsequently executed. The researchers note that this represents the first example of such a script using the funzip utility to assist with the decompression. Analyzing the dropped bundle reveals it is the InstallVibes bundle installer, which is a well-known pay-per-install software provider. Analyzing the executables inside the bundle allowed SentinelOne to classify this installer as VindInstaller.B, which is an adware and pay-per-install bundler that installs potentially unwanted programs or applications on a victim’s machine. Specifically, the “B” version of VindInstaller gathers victim host details, sends them to a remote URL, and retrieves “offers” to deliver to the victim host.
Impact
- Installation of unwanted applications
- Data exfiltration
Indicators of Compromise
MD5
- 6b00f5714c93fd6cfc495c17a36b2c18
- 979efa6aeb8a63edf8bd1d8f21f61c0b
- a37eeef5ee8d6f392bd1efd501e2a259
- 15381a4c5d24c2633bf5d97ec442d4a7
- 3a6bb21aae84b21b3214f7e4929fbe10
- c87784c532b5fd113354bb83d80dd5ec
- 4c50d40bbdc9335fa6f36cd70695f53f
- 7b80dcbbfd5024cd2e4d895bb3ef63de
SHA-256
- ee7db16ca9eac460b748957cd0a33548ef015e12f9f6fadcea30671204c3c4ba
- 709f633b12a335911ce213419c72062d05f538abdc412b659cdb10d4db9006ce
- 05b9383b6af36e6bf232248bf9ff44e9120afcf76e50ac8aa28f09b3307f4186
- 3af1c03214cd194b94c6fe0891de6c5201cc8d13d009c04ef383d67e1a750b2b
- 58490b58afbb533bbcb28cb756e5f91fe0eeb765ca571ac97e9f7104a317562e
- 4f47a06190cbdaac457d86f77baa22313ce6b1d3939e0ff4fa3cadf5a680b6c9
- d49ee2850277170d6dc7ef5f218b0697683ffd7cc66bd1a55867c4d4de2ab2fb
- 907c31b2da15aa14d06c6e828eef6ca627bd1af88655314548f747e5ed2f5697
- 97ef25ad5ffaf69a74f8678665179b917007c51b5b69d968ffd9edbfdf986ba0
SHA1
- 7f3cad054b3f2791ea7db178b037bac616e1d18a
- c4708467b25176c02b16fb1d3eead8be0adc2d05
- 073a8df0a98badcd1a33bf9261e35efed06fc1e1
- 0d0fdc86c6d0e7b3c4b2b7382953bccbb8921a42
- 77c3e490f77d16fd1cb02db011d51b632e6f2910
- 291e7ae52dfc17c8d73ab36bd615c1dacd9f2851
- 2a4148b3c68dfebd022c9da486d950b3f10afe6e
- de3b9697ef373db6fb93c0424844ae35f0a7131b
Source IP
- 104[.]31[.]88[.]115
- 104[.]31[.]89[.]115
URL
- http[:]//tracker[.]installerapi[.]com
- http[:]//installer[.]yougotupdated[.]com
- http[:]//tracker[.]installerapi[.]com/statistics/
Remediation
Block the threat indicators at their respective controls.