YARA · Avast / Gen Digital IOC
AVASTTI_Manjusaka_Payload_Encoded_Hexstring
No description has been set in the source file - AvastTI
- 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 2 rule(s) it depends on needed to compile it on its own.
manjusaka-payload-encoded-hexstring.yarDetection Rule License 1.1
private rule AVASTTI_EXE_PRIVATE : FILE
{
meta:
= "No description has been set in the source file - AvastTI"
= "Avast Threat Intel Team"
= "1096b81d-5853-5d19-b502-c8166b712a3d"
= "2022-08-19"
= "2026-03-11"
= "https://github.com/avast/ioc"
= "https://github.com/avast/ioc/blob/a450ddabed95984422909c75ac52b6841f685983/Manjusaka/Manjusaka.yar#L9-L13"
= "N/A"
= "0688672446142f95a22e49a04234cc90b6c9021efeda9ce57034c88d84944663"
= 75
= 90
= "FILE"
condition:
uint16( 0 ) == 0x5A4D and uint32( uint32( 0x3C ) ) == 0x00004550
}
private rule AVASTTI_ELF_PRIVATE
{
meta:
= "No description has been set in the source file - AvastTI"
= "Avast Threat Intel Team"
= "38aa7852-e7ea-5b90-a5f6-0862ad19a051"
= "2022-08-19"
= "2026-03-11"
= "https://github.com/avast/ioc"
= "https://github.com/avast/ioc/blob/a450ddabed95984422909c75ac52b6841f685983/Manjusaka/Manjusaka.yar#L1-L7"
= "N/A"
= "eb05e5d53bb8dea91467a76a164542894cdb1355cf3909f56818e27c589344ec"
= 75
= 90
= ""
strings:
$h01 = { 7F 45 4C 46 (01|02) (01|02) 01 }
condition:
$h01 at 0
}
rule AVASTTI_Manjusaka_Payload_Encoded_Hexstring
{
meta:
= "No description has been set in the source file - AvastTI"
= "Gen Threat Labs"
= "9799081c-67ec-5ab8-9b23-31f60c05fc05"
= "2022-08-19"
= "2026-03-11"
= "https://github.com/gendigitalinc/ioc"
= "https://github.com/avast/ioc/blob/a450ddabed95984422909c75ac52b6841f685983/Manjusaka/Manjusaka.yar#L64-L93"
= "N/A"
= "5c0b83e709baea7db6185d888bfa10bab073eb0eb2f3fb72df2da76fff3f6f22"
= 75
= 90
= ""
strings:
$s01 = "1f8b08000000000000ff7cdd099c1ae5fd3ff031e620c6038d5aea493df18a24c688372626c1180d468d78d465b34b96357be0ee2612354ab5553caa68ad454d158f2a566b51ab454d2dde"
$s02 = "1f8b08000000000000ff94dd09982355d9fffd62d89a45880a181621804240c10888718328a8ed864144a3029d66ba67d2cc4c4fecee8180a85114f3284b4096b00d619380085111f3284a"
$s03 = "1f8b08000000000000ff94dd0b982355b5fffde21eee011503a204440d201001317a148278890a1804348ad269667a260d3d33b1bb19820246bc10914bb80811618c80108f084110232204"
$s04 = "1f8b08000000000000ff94dd07981bd5d9fffdb131208a41b4075123ba280101c6112d88d04468a22b01b25abc6b6bf17aadecae4140008540103582001110401483e8a28b2e4a4074d197"
$s11 = "1f8b08000000000000ffecbd09784cd7ff077c26c924631977828958c284694d5092da12eb8448ce302108a248628ba82d65862025e924b8aeabdaeaa2abb6bfaebad74f83fe4804a1d5d6"
$s12 = "1f8b08000000000000ffecbd097414c5faff5d9d7502849e400209201974c4441113371240c8842cd5d00361070502224bdc403203a82c8993d1146d2b7ac5e5ba5cdcb9aea85c36176612"
$s13 = "1f8b08000000000000ffecbd7b7854d5d928be7632496620710d4874522e9991ad4e94627641491425031378b7ae1150046a1168a1237ca2419801542e893b53b3d8eeafb4b5777b8eb5fd"
$s14 = "1f8b08000000000000ffecbd7b7854d5d530be4f32496620710f9ae8a45c3223479d28d51c414934960c4c601ddd23a811a845a0858e50d120cc002a97c49369b3399e96b6dacb5bfb7dbe"
$s15 = "1f8b08000000000000ffecbd79785445d6305eb7934e3a90e676846887451abc68c7b5e33293284b37e924a7e506a222a022c45119501c23744b1c194ce6764b2a97abcc88233a3aaee38a"
condition:
(AVASTTI_EXE_PRIVATE or AVASTTI_ELF_PRIVATE ) and ( any of ( $s0* ) and any of ( $s1* ) )
}
Strings (9 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $s01 | text | "1f8b08000000000000ff7cdd099c1ae5fd3ff031e620c6038d5aea493df18a24c688372626c1180d468d78d465b34b96357be0ee2612354ab5553caa68ad454d158f2a566b51ab454d2dde" | |
| $s02 | text | "1f8b08000000000000ff94dd09982355d9fffd62d89a45880a181621804240c10888718328a8ed864144a3029d66ba67d2cc4c4fecee8180a85114f3284b4096b00d619380085111f3284a" | |
| $s03 | text | "1f8b08000000000000ff94dd0b982355b5fffde21eee011503a204440d201001317a148278890a1804348ad269667a260d3d33b1bb19820246bc10914bb80811618c80108f084110232204" | |
| $s04 | text | "1f8b08000000000000ff94dd07981bd5d9fffdb131208a41b4075123ba280101c6112d88d04468a22b01b25abc6b6bf17aadecae4140008540103582001110401483e8a28b2e4a4074d197" | |
| $s11 | text | "1f8b08000000000000ffecbd09784cd7ff077c26c924631977828958c284694d5092da12eb8448ce302108a248628ba82d65862025e924b8aeabdaeaa2abb6bfaebad74f83fe4804a1d5d6" | |
| $s12 | text | "1f8b08000000000000ffecbd097414c5faff5d9d7502849e400209201974c4441113371240c8842cd5d00361070502224bdc403203a82c8993d1146d2b7ac5e5ba5cdcb9aea85c36176612" | |
| $s13 | text | "1f8b08000000000000ffecbd7b7854d5d928be7632496620710d4874522e9991ad4e94627641491425031378b7ae1150046a1168a1237ca2419801542e893b53b3d8eeafb4b5777b8eb5fd" | |
| $s14 | text | "1f8b08000000000000ffecbd7b7854d5d530be4f32496620710f9ae8a45c3223479d28d51c414934960c4c601ddd23a811a845a0858e50d120cc002a97c49369b3399e96b6dacb5bfb7dbe" | |
| $s15 | text | "1f8b08000000000000ffecbd79785445d6305eb7934e3a90e676846887451abc68c7b5e33293284b37e924a7e506a222a022c45119501c23744b1c194ce6764b2a97abcc88233a3aaee38a" |
Condition
(AVASTTI_EXE_PRIVATE or AVASTTI_ELF_PRIVATE ) and ( any of ( $s0* ) and any of ( $s1* ) )In plain words (Heuristic)
- At least one pattern in ( $s0* ) must match.
- At least one pattern in ( $s1* ) must match.
- Depends on the rule AVASTTI_EXE_PRIVATE.
- Depends on the rule AVASTTI_ELF_PRIVATE.
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References
Licence & attribution
Author: Gen Threat Labs
Source repository: Avast / Gen Digital IOC @ a450ddabed
Licence: Detection Rule License 1.1 (repository licence)
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 9799081c-67ec-5ab8-9b23-31f60c05fc05
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