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สำนักงานพัฒนาธุรกรรมทางอิเล็กทรอนิกส์ Electronic Transactions Development Agency |
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สำนักงานพัฒนาธุรกรรมทางอิเล็กทรอนิกส์ Electronic Transactions Development Agency |
Tool: Jaff| Names | Jaff Rakhni | |
| Category | Malware | |
| Type | Ransomware | |
| Description | (Fortinet) Like many ransomware variants, Jaff ransomware commonly arrives as a pdf attachment. Once you open the attachment, it displays a one-line document along with a pop-up message asking whether you want to open an embedded. After downloading the binary file, Jaff ransomware starts decrypting part of the malware code. It uses a simple code redirection routine as an anti-analysis trick to stretch the time it requires to analyze the actual malicious code. In between code execution, it uses garbage code that is not relevant to the malware execution. | |
| Information | <https://www.fortinet.com/blog/threat-research/looking-into-jaff-ransomware.html> <http://malware-traffic-analysis.net/2017/05/16/index.html> <https://www.proofpoint.com/us/threat-insight/post/jaff-new-ransomware-from-actors-behind-distribution-of-dridex-locky-bart> <http://blog.talosintelligence.com/2017/05/jaff-ransomware.html> | |
| Malpedia | <https://malpedia.caad.fkie.fraunhofer.de/details/win.jaff> | |
| AlienVault OTX | <https://otx.alienvault.com/browse/pulses?q=tag:jaff> | |
| Playbook | <https://www.nomoreransom.org/uploads/RakhniDecryptor_how-to_guide.pdf> | |
Last change to this tool card: 25 April 2021
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| Changed | Name | Country | Observed | ||
APT groups | |||||
| TA505, Graceful Spider, Gold Evergreen |  | 2006-Nov 2022 |  | ||
1 group listed (1 APT, 0 other, 0 unknown)
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