Microsoft Windows Task Scheduler is a set of Microsoft Windows components that allows for the execution of scheduled tasks. The exploit "functions reliably on 32- and 64-bit Windows 10 platforms, as well as Windows Server 2016 and Windows Server 2019.
Task Scheduler is a set of Microsoft Windows components that allows for the execution of scheduled tasks. The front-end components of Task Scheduler, such as schtasks.exe, are interfaces that allow for users to view, create, and modify scheduled tasks. The back-end part of Task Scheduler is a Windows service that runs with SYSTEM privileges. One of the libraries used by the Task Scheduler service, schedsvc.dll, has a function called
tsched::SetJobFileSecurityByName(), which sets permissions of job files. The permissions of the job file in the
%Windir%\system32\tasks directory are modified to give the calling user full permissions to the job file that they have created.
Public proof-of-concept exploit code leverages the legacy
schedsvc.dll code from Windows XP to take advantage of these high privilege levels when setting file permissions. Versions of Windows prior to Vista used job files in the
%Windir%\tasks directory. Legacy versions of schtasks.exe will cause these jobs to be migrated to the %Windir%\system32\tasks directory when those program versions are executed on modern Windows platforms. In conjunction with the SYSTEM security token used by the Task Scheduler service, this migration behavior can be used along with hard links to grant full permissions of protected files to any user on a Windows system.
By leveraging the Windows Task Scheduler service, an authenticated attacker can gain full access to protected files. This can allow complete system compromise from a limited Windows user account.
To address the issue, the 0patch team “decided to replace self-impersonation with client-impersonation, and to do that, we removed the call to ImpersonateSalfWithPrivilege and injected a call to RpcImpersonateClient in its place.
A vulnerability in the REST API of Cisco Prime Infrastructure (PI) and Cisco Evolved Programmable Network Manager (EPNM) releases prior to 3.0.2 could allow an unauthenticated remote attacker to execute arbitrary code with root privileges on the underlying operating system.
Scranos is a Trojan horse that steals information from the compromised computer. It may also download potentially malicious files. Scranos cloaks itself as cracked software or apps that pose as legitimate programs, such as ebook readers, video players, drivers, and even security products. Upon execution, a rootkit driver is installed to hide the malware.
Millions of computers powered by Intel processors are affected by vulnerabilities that can be exploited by malicious actors to obtain potentially sensitive information. The side-channel attack methods, named ZombieLoad, Rogue In-Flight Data Load,(RIDL) and Fallout, are similar to the notorious Meltdown and Spectre. The attack methods work against both PCs and cloud environments, and they can be launched against most Intel CPUs.
ngCERT Advisory 19-years-old WinRAR vulnerability leads to over 100 malware exploits
ngCERT Advisory Microsoft Exchange 2013 and Newer are vulnerable to NTLM relay attacks
The Remote Desktop Protocol (RDP) and a vulnerability in the implementation of the Server Message Block SMB protocol of Microsoft Windows Operating System is currently being exploited by a ransomware called WannaCry worm. The worm encrypts all files on an infected computer’s hard drive.
Researchers discovered six new vulnerabilities in D-Link wireless cloud routers running their latest firmware. The reported vulnerabilities were found in the DIR-865L model of D-Link routers, which is meant for home network use. There are also likelihood that some of these vulnerabilities are present in newer models of the router because of the similiarities in codebase.
VMware Fusion, VMRC, and Horizon Client contain a local privilege escalation vulnerability due to a Time-of-check Time-of-use (TOC/TOU) issue in the service opener. Furthermore, another local privilege escalation was discovered, which allows the application to blindly executes files from an untrusted location. Both vulnerabilities result in arbitrary code execution as root.
Adobe has released an update for multiple adobe products in Windows, MacOS, and Linux. The updates resolves critical out-of-bounds Read and Write vulnerabilities that could lead to arbitrary code execution and information disclosure.
Researchers discovered numerous critical security vulnerabilities in SaltStack Salt framework – a configuration tool for cloud servers and data centers. Salt is used to monitor and update the state of servers. Each server runs an agent called a "minion" which connects to a "master", a Salt installation that collects state reports from minions and publishes update messages that minions can act on. The vulnerabilities allows attackers to bypass authentication and authorization for arbitrary code execution.
A critical vulnerability was discovered in Cisco Webex Meetings Desktop App which might allow a malicious remote attacker to execute programs on affected end-user system. This vulnerability is caused by improper validation of input that is supplied to application URLs. Also, the attacker could exploit this vulnerability by persuading a user to follow a malicious URL.
A new ransomware known as EvilQuest has been discovered by security researchers. This ransomware was first spotted to be impersonating the Google Software Update program, and on torrent sites, injected in installers wrapping pirated versions of popular macOS software such as Little Snitch, Ableton Live, and Mixed in key. EvilQuest ransomware is discovered to encrypt macOS systems, installs a keylogger and a reverse shell for full control over infected host, and exfiltrates files that contain valuable information (keys to cryptocurrency wallets, code-signing certificates, and many more) with a variety of extensions (eg .pdf, .doc, .jpg, .txt, .pages, .wallet, .zip, etc).
According to Cisco, different categories of vulnerabilities were discovered from different Cisco routers. This vulnerabilities ranges from static default credential, Management interface remote command execution, authentication bypass, arbitrary code execution, and privilege escalation.
Researchers discovered that attackers can access organizations ‘networks through remote access systems to carry out ransomware attack. This is performed through the remote desktop protocol (RDP) and virtual private networks (VPN). The impact of these attacks can be severe on business operations because data are stolen and sold. Also, the recovery from this attacks is very costly to investigate and remediate the compromised network, and restore encrypted files from backup.
Researchers discovered multiple vulnerabilities in the web-based management interface of Cisco Small Business RV320 and RV325 Series Routers and Cisco Small Business RV016, RV042, and RV082 Routers. This vulnerabilities could allow an authenticated, remote attacker with administrative privileges to execute arbitrary commands on an affected device.
Recently, a group of security researchers discovered a new vulnerability named ReVoLTE attack. This vulnerability is due to mobile operators often utilizing similarly encryption key to obtain multiple 4G voice calls that takes place through similarly base station. This vulnerability could allow a malicious attacker to manipulate encrypted content of a recorded Volte call so as to eavesdrop the conversation.
Researchers has discovered critical security risk with Tecno Android phones which has a pre-installed malware called Triada. Malware which signed users up to subscription services without their permission was discovered on thousands of Tecno mobile phones sold in Africa. Anti-fraud firm Upstream found the malicious code on Tecno handsets sold in Ethiopia, Cameroon, Egypt, Ghana and South Africa.
An SQL injection is a technique that attackers apply to insert SQL query into input fields to then be processed by the underlying SQL database. These weaknesses are then able to be abused when entry forms allow user-generated SQL statements to query the database directly. The attack results in the unauthorized viewing of user lists, the deletion of database entries and stealing of data.
The recent Classification of Nigeria, Kenya and Egypt by Kaspersky lab as easiest Cyberattack target in Africa with about Five Hundred and seventy-seven (577) attempted malware attacks hourly, is a serious wake up call to the government and the stakeholders in the Cybersecurity industry. This was disclosed in the company’s second quarter Spam and phishing 2020 report.
Reports revealed recent compromises of U.S. government agencies, critical infrastructure entities, and private sector organizations by an advanced persistent threat (APT) actor which began at least since March 2020. It is expected that removing this threat actor from compromised environments will be highly complex and challenging for organizations hence the need to take proactive actions in the protection of government critical national information infrastructures. The cyber-security firm that identified the large-scale hacking of US government agencies says it "genuinely impacted" around 50 organisations. The US Treasury and departments of homeland security, state and defence are known to have been targeted. Russian Intelligence has been accused by the US for the cyber intrusion. Several other organisations around the world are understood to have been targeted by hackers using the same network management software.
After conducting investigations into the Advanced Persistent Threat Compromise of Government Critical National Infrastructure, and Private Sector Organizations Infrastructures, SolarWinds have released an updated advisory for the Sunburst and the SuperNova backdoor that was discovered while investigating the recent SolarWinds Orion supply-chain attack. It was discovered that the SuperNova backdoor was likely used by a separate threat actor. Several teams of researchers have mentioned the existence of two second-stage payloads after the initial disclosure of the SolarWinds attacks.
Phishing attacks are the most common and effective cyber security threat to individuals, businesses and organizations. Phishing is the delivery mechanism of choice for ransomware and other malware and it is a critical problem that every organization must address through a variety of means. Most phishing messages indicate immediate action is needed to avoid an unwanted time-sensitive consequence. It is important to be suspicious of all requests, and review messages carefully to determine if the message may be a phishing scam.
A new malware has been discovered to be crafting multi-architecture applications so that their code will run natively on Apple’s M1 Silicon chips. This is an attempt by malicious actors to target the company’s latest generation of Macs powered by its own processors. The malware is in the form of a Safari adware extension originally written to run on Intel x86 chips. The malicious extension, called "GoSearch22," is a well-known member of the "Pirrit" Mac adware family.
Cybercriminals are actively taking advantage of weaknesses in Windows and deploying malware for nefarious purposes. Windows has been a direct target of attacks by malware, more than 80% of malware detected are from windows according to latest discovery. This amongst others includes two updated versions of LodaRAT malware, TrickBot malware and the Zerologon flaws.
Microsoft has confirmed the attacks against the Exchange servers aimed at stealing email addresses and installing malware to gain persistence in the target networks. This attacks campaign has been attributed to China-based hacker group called HAFNIUM who were exploiting unknown software bugs in Exchange Server to steal sensitive data from select targets. The vulnerability is being actively exploited in the wild by several cyber espionage groups, including LuckyMouse, Tick, and Calypso targeting servers around the world.
A Microsoft-themed phishing campaign is using phony Google reCAPTCHA in an attempt to steal credentials from senior employees of various organizations. At least 2,500 such emails have been sent to senior-level employees, over the past three months. The emails first take recipients to a fake Google reCAPTCHA system page. Once victims “pass” the reCAPTCHA test, they are then redirected to a phishing landing page, which asks for their Office 365 credentials. After filling out the fake reCAPTCHA system, victims are then directed to what appears to be a Microsoft login screen.
A new spear-phishing campaign has been discovered to be targeting professionals on LinkedIn with weaponized job offers in an attempt to infect targets with a sophisticated and dangerous backdoor trojan called "more_eggs." According to researchers, the threat actors are using zip files to trick LinkedIn users into executing the More_eggs backdoor.
Signal CEO in a successful hacking of the Cellebrite cellphone hacking and cracking tool revealed that the software lacks industry-standard exploit mitigation defenses, thereby making the software vulnerable to exploitations. This is coming after Cellebrite claimed in 2019 that its new tool unlocks almost any iOS and Android device, and in December 2020, that it could easily crack Signal’s encryption. Marlinspike accused Cellebrite of making a living from undisclosed vulnerabilities hence the decision to play it smart with the company by publicly publishing the vulnerability.
Researchers discovered that Telegram instant messaging service is being used by malicious actors to manage a remote access trojan (RAT) called ToxicEye. These cyber criminals are increasingly abusing Telegram as a "command-and-control" system to distribute malware into organizations that could then be used to capture sensitive information from targeted systems. More than 130 attacks involving the ToxicEye RAT has been discovered recently, and warning that even when Telegram is not installed or being used, the system allows hackers to send malicious commands and operations remotely via the instant messaging app.