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YARA · Volexity threat-intel

VOLEXITY_Malware_Golang_Discordc2_Bmdyy

Detects a opensource malware available on github using strings in the binary. DISGOMOJI used by TransparentJasmine is based on this malware.

MalwareVolexity threat-intelBSD 2-Clause LicenseCompiles with YARA-X
Author
threatintel@volexity.com
Date
2024-02-22
Modified
2024-07-05
Score / Quality
75 / 80

What this rule detects

Detects a opensource malware available on github using strings in the binary. DISGOMOJI used by TransparentJasmine is based on this malware.

It defines 1 patterns (1 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

malware-golang-discordc2-bmdyy.yarBSD 2-Clause License
rule VOLEXITY_Malware_Golang_Discordc2_Bmdyy : FILE MEMORY
{
	meta:
		description = "Detects a opensource malware available on github using strings in the binary. DISGOMOJI used by TransparentJasmine is based on this malware."
		author = "threatintel@volexity.com"
		id = "1ddbf476-ba2d-5cbb-ad95-38e0ae8db71b"
		date = "2024-02-22"
		modified = "2024-07-05"
		reference = "https://github.com/bmdyy/discord-c2"
		source_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/2024/2024-06-13 DISGOMOJI/indicators/rules.yar#L244-L267"
		license_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
		hash = "d9f29a626857fa251393f056e454dfc02de53288ebe89a282bad38d03f614529"
		logic_hash = "38b860a43b9937351f74b01983888f18ad101cbe66560feb7455d46b713eba0f"
		score = 75
		quality = 80
		tags = "FILE, MEMORY"
		os = "all"
		os_arch = "all"
		scan_context = "file,memory"
		severity = "critical"
		license = "See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt"
		rule_id = 10264
		version = 12

	strings:
		$s1 = "**IP**: %s\n**User**: %s\n**Hostname**: %s\n**OS**: %s\n**CWD**" wide ascii

	condition:
		$s1
}

Strings (1 patterns)

IdentifierTypeValueModifiers
$s1text"**IP**: %s\n**User**: %s\n**Hostname**: %s\n**OS**: %s\n**CWD**"wide ascii

Condition

$s1

In plain words (Heuristic)

  • Pattern $s1 must be present.

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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).

  • d9f29a626857fa251393f056e454dfc02de53288ebe89a282bad38d03f614529

Licence & attribution

Author: threatintel@volexity.com

Source repository: Volexity threat-intel @ 3a9d0b5245

Licence: BSD 2-Clause License (stated in the rule's own meta)

“See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt”

Copyright notice: Copyright 2022 by Volexity, Inc.

Original rule

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

Rule id: 1ddbf476-ba2d-5cbb-ad95-38e0ae8db71b

Metadata

osall
os_archall
scan_contextfile,memory
severitycritical
rule_id10264
version12

Tags:FILEMEMORY