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MALPEDIA_Win_Hesperbot_Auto

autogenerated rule brought to you by yara-signator

MalwareHesperbotMalpedia 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: Hesperbot.

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

Summary generated from the rule's metadata and condition.

Rule source

win-hesperbot-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Hesperbot_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "f6aea63c-f69e-55d4-97f0-3c40d77d24ea"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.hesperbot"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.hesperbot_auto.yar#L1-L129"
		license_url = "N/A"
		logic_hash = "04a0a757bd6a1abed3c2e9cc240e3b373104813c31a80bae17dca4ea598f10fc"
		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 = { 0f84e2000000 8bce e8???????? 8b4d10 }
		$sequence_1 = { 8d4610 50 8d4608 50 56 ff15???????? 50 }
		$sequence_2 = { 77ec eb04 8d744102 8bc6 5e c3 6a00 }
		$sequence_3 = { 75f8 8d45e0 50 e8???????? e8???????? 8945ef }
		$sequence_4 = { 85ff 742b 6a20 58 48 c6043800 75f9 }
		$sequence_5 = { 7414 8b450c 894710 8b4510 33db 894714 43 }
		$sequence_6 = { 33f6 46 8937 c7470466864173 c7470867864173 89770c e8???????? }
		$sequence_7 = { 8a45fe 8a5dff 2403 004109 7418 2a5508 800940 }
		$sequence_8 = { 33f6 56 8d45f8 50 8d45f4 50 ff7508 }
		$sequence_9 = { 13f7 034c2458 1374245c 8344241440 894c2418 8974241c }

	condition:
		7 of them and filesize < 188416
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 0f84e2000000 8bce e8???????? 8b4d10 }
$sequence_1hex{ 8d4610 50 8d4608 50 56 ff15???????? 50 }
$sequence_2hex{ 77ec eb04 8d744102 8bc6 5e c3 6a00 }
$sequence_3hex{ 75f8 8d45e0 50 e8???????? e8???????? 8945ef }
$sequence_4hex{ 85ff 742b 6a20 58 48 c6043800 75f9 }
$sequence_5hex{ 7414 8b450c 894710 8b4510 33db 894714 43 }
$sequence_6hex{ 33f6 46 8937 c7470466864173 c7470867864173 89770c e8???????? }
$sequence_7hex{ 8a45fe 8a5dff 2403 004109 7418 2a5508 800940 }
$sequence_8hex{ 33f6 56 8d45f8 50 8d45f4 50 ff7508 }
$sequence_9hex{ 13f7 034c2458 1374245c 8344241440 894c2418 8974241c }

Condition

7 of them and filesize < 188416

In plain words (Heuristic)

  • The file must be smaller than 188416 (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: f6aea63c-f69e-55d4-97f0-3c40d77d24ea

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