ScarCruft
Posted: July 17, 2016
Threat Metric
The following fields listed on the Threat Meter containing a specific value, are explained in detail below:
Threat Level: The threat level scale goes from 1 to 10 where 10 is the highest level of severity and 1 is the lowest level of severity. Each specific level is relative to the threat's consistent assessed behaviors collected from SpyHunter's risk assessment model.
Detection Count: The collective number of confirmed and suspected cases of a particular malware threat. The detection count is calculated from infected PCs retrieved from diagnostic and scan log reports generated by SpyHunter.
Volume Count: Similar to the detection count, the Volume Count is specifically based on the number of confirmed and suspected threats infecting systems on a daily basis. High volume counts usually represent a popular threat but may or may not have infected a large number of systems. High detection count threats could lay dormant and have a low volume count. Criteria for Volume Count is relative to a daily detection count.
Trend Path: The Trend Path, utilizing an up arrow, down arrow or equal symbol, represents the level of recent movement of a particular threat. Up arrows represent an increase, down arrows represent a decline and the equal symbol represent no change to a threat's recent movement.
% Impact (Last 7 Days): This demonstrates a 7-day period change in the frequency of a malware threat infecting PCs. The percentage impact correlates directly to the current Trend Path to determine a rise or decline in the percentage.
Threat Level: | 8/10 |
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Infected PCs: | 51 |
First Seen: | July 17, 2016 |
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OS(es) Affected: | Windows |
ScarCruft, an Advanced Persistent Threat (APT) developed by North Korean hackers, has enhanced its arsenal of harmful tricks by adding a Bluetooth sniffer to its portfolio recently. The malware threat still relies on widely available exploit kits and phishing attacks as primary infection vectors exclusively, yet its new modification features a code typical of another APT known as DarkHotel.
ScarCruft is a relatively old piece of malware that supposedly underwent a complete overhaul in 2018. As a result, it now sports stronger evasion mechanisms and nastier droppers, all of which aimed at hijacking Microsoft’s UAC (User Account Control) to gain admin-level rights required for further subsequent infections. The way the ScarCruft APT is built allows for a step-by-step, chain-like attack featuring a separate corrupted payload at each level. The C&C communication commences during the first stage after the first ScarCruft dropper has neutralized the Windows UAC. The second stage brings the ROKRAT – a Remote Access Trojan (RAT) capable of both retrieving personal data through a backdoor and performing a range of typical Trojan operations such as screen capturing, keylogging, and arbitrary code execution. The harvested data is then forwarded to a cloud-based service such as Dropbox, Yandex, PCloud and Box.
ScarCruft’s new Bluetooth functionality increases the scope of potential targets by including mobile devices, including smartphones and tablets. If this were not enough, the malware actors behind ScarCruft seem to have set their eyes not only on individual PC users but also on corporate players doing business with Korean companies, as well as state embassies.
Technical Details
File System Modifications
Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.
The following files were created in the system:file.exe
File name: file.exeSize: 103.42 KB (103424 bytes)
MD5: 37c234d9100198717e9928494e476965
Detection count: 6
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: July 17, 2016
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