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YARA · BlackBerry Research & Intelligence (via Open-Source-YARA-rules)

BLACKBERRY_Eternitystealer

Detects Eternity Stealer

MalwareBlackBerry Research & Intelligence (via Open-Source-YARA-rules)Apache License 2.0Compiles with YARA-X
Author
BlackBerry Threat Research Team
Date
2022-05-22
Modified
2022-07-07
Score / Quality
75 / 85

What this rule detects

Detects Eternity Stealer

Targets: Windows PE.

It defines 9 patterns (9 text, 0 hex, 0 regex). YARA modules used: pe.

Summary generated from the rule's metadata and condition.

Rule source

Includes the imports needed to compile it on its own.

eternitystealer.yarApache License 2.0
import "pe"

rule BLACKBERRY_Eternitystealer : FILE
{
	meta:
		description = "Detects Eternity Stealer"
		author = "BlackBerry Threat Research Team"
		id = "8bccc143-c250-5d52-85cb-b315dc6fb679"
		date = "2022-05-22"
		modified = "2022-07-07"
		reference = "https://blogs.blackberry.com/en/2022/06/threat-spotlight-eternity-project-maas-goes-on-and-on"
		source_url = "https://github.com/mikesxrs/Open-Source-YARA-rules/blob/ec0056f767db98bf6d5fd63877ad51fb54d350e9/Blackberry/EternityStealer.yar#L4-L32"
		license_url = "N/A"
		logic_hash = "466030b30c4436c3e3896ca3385ae829696e7f351bba81bc3c0efbc62b86645f"
		score = 75
		quality = 85
		tags = "FILE"
		license = "This Yara rule is provided under the Apache License 2.0 (https://www.apache.org/licenses/LICENSE-2.0) and open to any user or organization, as long as you use it under this license and ensure originator credit in any derivative to The BlackBerry Research & Intelligence Team"

	strings:
		$s1 = "Corrupting Growtopia.." wide
		$s2 = "growtopia1.com" wide
		$s3 = "Deleting previous file from startup and copying new one." wide
		$s4 = "Debug mode, dont share this stealer anywhere." wide
		$s5 = "Sending info to Eternity.." wide
		$s6 = "Taking and uploading screenshot.." wide
		$s7 = "dcd.exe" wide
		$s8 = "https://eterprx.net" wide
		$s9 = "https://eternitypr.net" wide

	condition:
		( uint16( 0 ) == 0x5a4d and pe.imphash ( ) == "f34d5f2d4577ed6d9ceec516c1f5a744" and all of ( $s* ) )
}

Strings (9 patterns)

IdentifierTypeValueModifiers
$s1text"Corrupting Growtopia.."wide
$s2text"growtopia1.com"wide
$s3text"Deleting previous file from startup and copying new one."wide
$s4text"Debug mode, dont share this stealer anywhere."wide
$s5text"Sending info to Eternity.."wide
$s6text"Taking and uploading screenshot.."wide
$s7text"dcd.exe"wide
$s8text"https://eterprx.net"wide
$s9text"https://eternitypr.net"wide

Condition

( uint16( 0 ) == 0x5a4d and pe.imphash ( ) == "f34d5f2d4577ed6d9ceec516c1f5a744" and all of ( $s* ) )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • All patterns in ( $s* ) must match.
  • Uses the pe module.
  • Checks the PE import hash (imphash).

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References

Licence & attribution

Author: BlackBerry Threat Research Team

Source repository: BlackBerry Research & Intelligence (via Open-Source-YARA-rules) @ ec0056f767

Licence: Apache License 2.0 (stated in the rule's own meta)

“This Yara rule is provided under the Apache License 2.0 (https://www.apache.org/licenses/LICENSE-2.0) and open to any user or organization, as long as you use it under this license and ensure originator credit in any derivative to The BlackBerry Research & Intelligence Team”

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: 8bccc143-c250-5d52-85cb-b315dc6fb679

Tags:FILE