{
	"id": "41a2ff4a-0444-4f12-b5a3-6a9f9ec47a3b",
	"created_at": "2026-04-06T00:14:42.73018Z",
	"updated_at": "2026-04-10T03:21:45.563083Z",
	"deleted_at": null,
	"sha1_hash": "18bb0e7d9d221213b05aa5c75dcf1c444451cb9f",
	"title": "Nefilim Ransomware Threatens to Expose Stolen Data",
	"llm_title": "",
	"authors": "",
	"file_creation_date": "0001-01-01T00:00:00Z",
	"file_modification_date": "0001-01-01T00:00:00Z",
	"file_size": 60466,
	"plain_text": "Nefilim Ransomware Threatens to Expose Stolen Data\r\nArchived: 2026-04-05 19:43:28 UTC\r\nNefilim’s code shares many notable similarities with Nemty 2.5 ransomware; the main difference is the fact that Nefilim has\r\ndone away with the Ransomware-as-a-Service (RaaS) component. It also manages payments via email communication\r\nrather than through a Tor payment site. There is nothing that indicates that the same threat actors are behind Nemty and\r\nNetfilim. The new ransomware is most likely spread through RDP, like other ransomware such as Nemtynews article,\r\nCrysis, and SAMSAMnews- cybercrime-and-digital-threats.\r\nNetfilim uses AES-128 encryption to encrypt victim’s files. An RSA-2048 embedded in the ransomware executable will\r\nthen encrypt the AES encryption key. The encrypted AES key will then be added to every encrypted key. The ransomware\r\nalso adds a “NEFILIM” string as a file marker to all encrypted files. The encrypted files will have .NEFILIM appended to\r\ntheir file names (for example, a file called 1.doc would be named 1.doc.NEFILIM).\r\nTo decrypt these files, victims need to get the RSA private key from the ransomware developers. Details of the ransom have\r\nnot been released yet.\r\nRace against ransomware\r\nRansomware continues to expand its reach as threat actors continue to come up with new ransomware variants and families.\r\nThe healthcare, government, and education sectors were on the receiving end of many such attacks last year, as revealed in\r\nthe Trend Micro 2019 Annual Security Roundup. Unfortunately, many feel pressured to pay the ransom to prevent the\r\nparalysis of operations and the loss of valuable data.\r\nLike Nefilim, many of these ransomware attacks abuse exposed RDP ports. Enterprises can take the following steps to\r\ndefend against RDP abuse:\r\nClose unused RDP ports. If closing them is not possible, limit the source addresses that can access the ports.\r\nConfigure settings to ensure that only authorized users can gain RDP network admin access.\r\nMonitor the network to spot signs of attacks.\r\nLimit the number of failed login attempts to keep unauthorized logins at bay.\r\n[Read: InfoSec Guide: Remote Desktop Protocol (RDP)news article]\r\nCompanies should also establish firm protocols and rules in dealing with unverified emails; employees should avoid opening\r\nthese emails or attachments. To prevent data loss, employees should also regularly backup files. Finally, regularly updating\r\nsoftware and applications can ensure that the system is protected against both old and recent vulnerabilities.\r\nEnterprises that are dealing with a ransomware attack can try the Trend Micro Ransomware File Decryptor (available in\r\nWindows and macOS) for free.\r\nIndicators of compromise\r\nSHA-256\r\nTrend Micro Pattern\r\nDetection\r\nTrend Micro Machine L\r\nDetection\r\n5ab834f599c6ad35fcd0a168d93c52c399c6de7d1c20f33e25cb1fdb25aec9c6 Ransom.Win32.NEFILIM.B Troj.Win32.TRX.XXPE5\r\nHIDE\r\nLike it? Add this infographic to your site:\r\n1. Click on the box below.   2. Press Ctrl+A to select all.   3. Press Ctrl+C to copy.   4. Paste the code into your page\r\n(Ctrl+V).\r\nhttps://www.trendmicro.com/vinfo/us/security/news/cybercrime-and-digital-threats/nefilim-ransomware-threatens-to-expose-stolen-data\r\nPage 1 of 2\n\nImage will appear the same size as you see above.\r\nWe Recommend\r\nThe Industrialization of Botnets: Automation and Scale as a New Threat Infrastructurenews article\r\nComplexity and Visibility Gaps in Power Automatenews article\r\nCracking the Isolation: Novel Docker Desktop VM Escape Techniques Under WSL2news article\r\nAzure Control Plane Threat Detection With TrendAI Vision One™news article\r\nThe AI-fication of Cyberthreats: Trend Micro Security Predictions for 2026predictions\r\nRansomware Spotlight: DragonForcenews article\r\nStay Ahead of AI Threats: Secure LLM Applications With Trend Vision Onenews article\r\nThe Road to Agentic AI: Navigating Architecture, Threats, and Solutionsnews article\r\nSource: https://www.trendmicro.com/vinfo/us/security/news/cybercrime-and-digital-threats/nefilim-ransomware-threatens-to-expose-stolen-data\r\nhttps://www.trendmicro.com/vinfo/us/security/news/cybercrime-and-digital-threats/nefilim-ransomware-threatens-to-expose-stolen-data\r\nPage 2 of 2",
	"extraction_quality": 1,
	"language": "EN",
	"sources": [
		"Malpedia"
	],
	"references": [
		"https://www.trendmicro.com/vinfo/us/security/news/cybercrime-and-digital-threats/nefilim-ransomware-threatens-to-expose-stolen-data"
	],
	"report_names": [
		"nefilim-ransomware-threatens-to-expose-stolen-data"
	],
	"threat_actors": [],
	"ts_created_at": 1775434482,
	"ts_updated_at": 1775791305,
	"ts_creation_date": 0,
	"ts_modification_date": 0,
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