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MALPEDIA_Win_Newposthings_Auto

autogenerated rule brought to you by yara-signator

MalwareNewposthingsMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
Author
Felix Bilstein - yara-signator at cocacoding dot com
Date
2026-05-04
Modified
2026-05-18
Score / Quality
75 / 75

What this rule detects

autogenerated rule brought to you by yara-signator

Associated malware family: Newposthings.

It defines 10 patterns (0 text, 10 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-newposthings-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Newposthings_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "20ff82cf-2d6a-526d-a110-13e7754c9905"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.newposthings"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.newposthings_auto.yar#L1-L128"
		license_url = "N/A"
		logic_hash = "1e60e973792ec4bd04fc1353a5459cddbddac13982ad2b2d312fbcf2fa54e964"
		score = 75
		quality = 75
		tags = "FILE"
		version = "1"
		tool = "yara-signator v0.6.0"
		signator_config = "callsandjumps;datarefs;binvalue"
		malpedia_rule_date = "20260422"
		malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
		malpedia_version = "20260504"
		malpedia_license = "CC BY-SA 4.0"
		malpedia_sharing = "TLP:WHITE"

	strings:
		$sequence_0 = { 837d3410 720b ff7520 e8???????? 83c404 }
		$sequence_1 = { 6afe 8d45f0 50 68e4010210 e8???????? 83c40c 83c8ff }
		$sequence_2 = { 6843120110 e8???????? 83c418 85c0 7903 c60600 83f8fe }
		$sequence_3 = { 50 8d8d68ffffff c78540ffffff0f000000 c7853cffffff00000000 c6852cffffff00 c7857cffffff0f000000 }
		$sequence_4 = { ffd6 8d442410 50 ffd7 6a00 6a00 53 }
		$sequence_5 = { 59 48 5d c3 8b0d???????? 83c901 }
		$sequence_6 = { 8b3495481d0210 8a441e04 84c0 0f8957020000 807d1302 0f846d020000 }
		$sequence_7 = { 8d8d14ffffff e8???????? 83c404 c645fc07 8d4d08 51 }
		$sequence_8 = { 8b06 3b4210 0f92c1 884de4 84c9 7404 8b12 }
		$sequence_9 = { 75f8 8bca c1e902 f3a5 8d8508feffff 8bca 50 }

	condition:
		7 of them and filesize < 827392
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 837d3410 720b ff7520 e8???????? 83c404 }
$sequence_1hex{ 6afe 8d45f0 50 68e4010210 e8???????? 83c40c 83c8ff }
$sequence_2hex{ 6843120110 e8???????? 83c418 85c0 7903 c60600 83f8fe }
$sequence_3hex{ 50 8d8d68ffffff c78540ffffff0f000000 c7853cffffff00000000 c6852cffffff00 c7857cffffff0f000000 }
$sequence_4hex{ ffd6 8d442410 50 ffd7 6a00 6a00 53 }
$sequence_5hex{ 59 48 5d c3 8b0d???????? 83c901 }
$sequence_6hex{ 8b3495481d0210 8a441e04 84c0 0f8957020000 807d1302 0f846d020000 }
$sequence_7hex{ 8d8d14ffffff e8???????? 83c404 c645fc07 8d4d08 51 }
$sequence_8hex{ 8b06 3b4210 0f92c1 884de4 84c9 7404 8b12 }
$sequence_9hex{ 75f8 8bca c1e902 f3a5 8d8508feffff 8bca 50 }

Condition

7 of them and filesize < 827392

In plain words (Heuristic)

  • The file must be smaller than 827392 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

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References

Licence & attribution

Author: Felix Bilstein - yara-signator at cocacoding dot com

Source repository: Malpedia signator rules @ c901f97b7d

Licence: Creative Commons Attribution-ShareAlike 4.0 (repository licence)

Original rule

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

Rule id: 20ff82cf-2d6a-526d-a110-13e7754c9905

Metadata

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260422
malpedia_hasha182e35da64e6d71cb55f125c4d4225196523f14
malpedia_version20260504
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE