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DITEKSHEN_INDICATOR_TOOL_Edrprison

Detects EDRPrison

Suspicious / huntingditekSHen detectionBSD 2-Clause LicenseCompiles with YARA-X
Author
ditekshen
Date
2020-11-06
Modified
2024-09-25
Score / Quality
75 / 75

What this rule detects

Detects EDRPrison

Targets: Windows PE.

It defines 6 patterns (6 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
indicator-tool-edrprison.yarBSD 2-Clause License
rule DITEKSHEN_INDICATOR_TOOL_Edrprison : FILE
{
	meta:
		description = "Detects EDRPrison"
		author = "ditekshen"
		id = "85831265-fd9e-5e0e-b5d9-22bf1c89b3f2"
		date = "2020-11-06"
		modified = "2024-09-25"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/indicator_tools.yar#L1859-L1872"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "e1ef9e9c6bd0d2efa7b0b617fb52100075658221559f92a61c672807ab5a4d77"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "Block:" wide
		$s2 = "PacketLen:" wide
		$s3 = "DoWorkPacket_Step" ascii
		$s4 = "DoWorkAsyncNETWORK" ascii
		$s5 = "BlockMessage" ascii
		$s6 = "GetRmAddrPortNetwork" ascii

	condition:
		uint16( 0 ) == 0x5a4d and 5 of them
}

Strings (6 patterns)

IdentifierTypeValueModifiers
$s1text"Block:"wide
$s2text"PacketLen:"wide
$s3text"DoWorkPacket_Step"ascii
$s4text"DoWorkAsyncNETWORK"ascii
$s5text"BlockMessage"ascii
$s6text"GetRmAddrPortNetwork"ascii

Condition

uint16( 0 ) == 0x5a4d and 5 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 5 patterns in the rule must match.

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References

Licence & attribution

Author: ditekshen

Source repository: ditekSHen detection @ e76c93dcde

Licence: BSD 2-Clause License (repository licence)

Copyright notice: Copyright 2021 by ditekSHen (https://github.com/ditekshen/detection).

Original rule

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

Rule id: 85831265-fd9e-5e0e-b5d9-22bf1c89b3f2

Tags:FILE

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