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DITEKSHEN_MALWARE_Win_Whiffyrecon

Detects Whiffy Recon

MalwareWhiffyreconditekSHen detectionBSD 2-Clause LicenseCompiles with YARA-X
Author
ditekSHen
Date
2020-11-06
Modified
2024-11-01
Score / Quality
75 / 75

What this rule detects

Detects Whiffy Recon

Associated malware family: Whiffyrecon.

Targets: Windows PE.

It defines 13 patterns (13 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-whiffyrecon.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Whiffyrecon : FILE
{
	meta:
		description = "Detects Whiffy Recon"
		author = "ditekSHen"
		id = "19b0f327-06ee-5f78-abac-9c4fbcad98ac"
		date = "2020-11-06"
		modified = "2024-11-01"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/malware.yar#L11032-L11052"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "58df9f47f5890c5e31d352be682c6164a940dad206ad29c54c43f70d3afb9543"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "WLANSVC" fullword wide
		$s2 = "f02fe1c0-137a-4802-8881-55dd300c5022" fullword wide
		$s3 = "\\wlan.lnk" fullword wide
		$s4 = "str-12.bin" wide
		$s5 = "/geolocation/v1/geolocate?key=" wide
		$s6 = "/wlan" fullword wide
		$s7 = "/scanned" fullword wide
		$s8 = "/bots/" fullword wide
		$s9 = "wlan.pdb" fullword ascii
		$s10 = "botId" fullword ascii
		$s11 = "wifiAccessPoints" fullword ascii
		$s12 = "considerIp" fullword ascii
		$s13 = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36" fullword wide

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

Strings (13 patterns)

IdentifierTypeValueModifiers
$s1text"WLANSVC"fullword wide
$s2text"f02fe1c0-137a-4802-8881-55dd300c5022"fullword wide
$s3text"\\wlan.lnk"fullword wide
$s4text"str-12.bin"wide
$s5text"/geolocation/v1/geolocate?key="wide
$s6text"/wlan"fullword wide
$s7text"/scanned"fullword wide
$s8text"/bots/"fullword wide
$s9text"wlan.pdb"fullword ascii
$s10text"botId"fullword ascii
$s11text"wifiAccessPoints"fullword ascii
$s12text"considerIp"fullword ascii
$s13text"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36"fullword wide

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: 19b0f327-06ee-5f78-abac-9c4fbcad98ac

Tags:FILE

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