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YARA · Avast / Gen Digital IOC

AVASTTI_Manjusaka_Payload_Elf

No description has been set in the source file - AvastTI

MalwareManjusakaAvast / Gen Digital IOCDetection Rule License 1.1Compiles with YARA-X
Author
Gen Threat Labs
Date
2022-08-19
Modified
2026-03-11
Score / Quality
75 / 90

What this rule detects

No description has been set in the source file - AvastTI

Associated malware family: Manjusaka.

It defines 9 patterns (9 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Includes the imports and 1 rule(s) it depends on needed to compile it on its own.

manjusaka-payload-elf.yarDetection Rule License 1.1
private rule AVASTTI_ELF_PRIVATE
{
	meta:
		description = "No description has been set in the source file - AvastTI"
		author = "Avast Threat Intel Team"
		id = "38aa7852-e7ea-5b90-a5f6-0862ad19a051"
		date = "2022-08-19"
		modified = "2026-03-11"
		reference = "https://github.com/avast/ioc"
		source_url = "https://github.com/avast/ioc/blob/a450ddabed95984422909c75ac52b6841f685983/Manjusaka/Manjusaka.yar#L1-L7"
		license_url = "N/A"
		logic_hash = "eb05e5d53bb8dea91467a76a164542894cdb1355cf3909f56818e27c589344ec"
		score = 75
		quality = 90
		tags = ""

	strings:
		$h01 = { 7F 45 4C 46 (01|02) (01|02) 01 }

	condition:
		$h01 at 0
}

rule AVASTTI_Manjusaka_Payload_Elf
{
	meta:
		description = "No description has been set in the source file - AvastTI"
		author = "Gen Threat Labs"
		id = "010398f6-ca9b-58b4-a9d8-12428f649ffc"
		date = "2022-08-19"
		modified = "2026-03-11"
		reference = "https://github.com/gendigitalinc/ioc"
		source_url = "https://github.com/avast/ioc/blob/a450ddabed95984422909c75ac52b6841f685983/Manjusaka/Manjusaka.yar#L95-L122"
		license_url = "N/A"
		hash = "0063e5007566e0a7e8bfd73c4628c6d140b332df4f9afbb0adcf0c832dd54c2b"
		hash = "76eb9af0e2f620016d63d38ddb86f0f3f8f598b54146ad14e6af3d8f347dd365"
		hash = "0a5174b5181fcd6827d9c4a83e9f0423838cbb5a6b23d012c3ae414b31c8b0da"
		hash = "63e7f6fa89faa88b346d0cceddf2ef2e3ebf5d5828aa0087663c227422041db7"
		hash = "400855b63b8452221869630c58b7ab03373dabf77c0f10df635e746c13f98ea9"
		hash = "4eb337c12f0e0ee73b3209bed4b819719c4af9f63f3e81dbc3bbf06212450f1c"
		logic_hash = "bbc496788381b57b3ea2814dd61a824d552233f9c5f73287f8bc284252fbedfe"
		score = 75
		quality = 90
		tags = ""

	strings:
		$s01 = "proc/meminfo/proc/uptime/etc/os-releaseVERSION_ID=NAME=DISTRIB_ID"
		$s02 = "/root/.cargo/registry/src/mirrors.ustc.edu.cn"
		$s03 = "cmdlineexecwdassertion failed"
		$s04 = "/etc/passwd/root/"
		$s11 = "./protos/cs.rstargetpidAgentsagentAgentUpdatesleepenckeysysinfoConfigPluginExecPluginLoadReqCwd"
		$s12 = "ReqScreenH"
		$s13 = "manjusakahttp:"
		$s14 = "pluginexecpluginloadreqcwdreqcmd"
		$s15 = "/NPSC2/npc/libs/"

	condition:
		AVASTTI_ELF_PRIVATE and ( all of ( $s0* ) and any of ( $s1* ) )
}

Strings (9 patterns)

IdentifierTypeValueModifiers
$s01text"proc/meminfo/proc/uptime/etc/os-releaseVERSION_ID=NAME=DISTRIB_ID"
$s02text"/root/.cargo/registry/src/mirrors.ustc.edu.cn"
$s03text"cmdlineexecwdassertion failed"
$s04text"/etc/passwd/root/"
$s11text"./protos/cs.rstargetpidAgentsagentAgentUpdatesleepenckeysysinfoConfigPluginExecPluginLoadReqCwd"
$s12text"ReqScreenH"
$s13text"manjusakahttp:"
$s14text"pluginexecpluginloadreqcwdreqcmd"
$s15text"/NPSC2/npc/libs/"

Condition

AVASTTI_ELF_PRIVATE and ( all of ( $s0* ) and any of ( $s1* ) )

In plain words (Heuristic)

  • All patterns in ( $s0* ) must match.
  • At least one pattern in ( $s1* ) must match.
  • Depends on the rule AVASTTI_ELF_PRIVATE.

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References

Sample hashes

Hashes of samples the author lists in the rule's meta (look them up in your threat-intelligence platform).

  • 0063e5007566e0a7e8bfd73c4628c6d140b332df4f9afbb0adcf0c832dd54c2b
  • 76eb9af0e2f620016d63d38ddb86f0f3f8f598b54146ad14e6af3d8f347dd365
  • 0a5174b5181fcd6827d9c4a83e9f0423838cbb5a6b23d012c3ae414b31c8b0da
  • 63e7f6fa89faa88b346d0cceddf2ef2e3ebf5d5828aa0087663c227422041db7
  • 400855b63b8452221869630c58b7ab03373dabf77c0f10df635e746c13f98ea9
  • 4eb337c12f0e0ee73b3209bed4b819719c4af9f63f3e81dbc3bbf06212450f1c

Licence & attribution

Author: Gen Threat Labs

Source repository: Avast / Gen Digital IOC @ a450ddabed

Licence: Detection Rule License 1.1 (repository licence)

Original rule

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

Rule id: 010398f6-ca9b-58b4-a9d8-12428f649ffc

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