YARA · Volexity threat-intel
VOLEXITY_Apt_Malware_Linux_Disgomoji_1
Detects GOMOJI malware using strings in the ELF.
- Author
- threatintel@volexity.com
- Date
- 2024-02-22
- Modified
- 2024-07-05
- Score / Quality
- 75 / 80
What this rule detects
Detects GOMOJI malware using strings in the ELF.
It defines 6 patterns (6 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
rule VOLEXITY_Apt_Malware_Linux_Disgomoji_1 : TRANSPARENTJASMINE FILE MEMORY
{
meta:
= "Detects GOMOJI malware using strings in the ELF."
= "threatintel@volexity.com"
= "f6643e9a-ca41-57e0-9fce-571d340f1cfe"
= "2024-02-22"
= "2024-07-05"
= "TIB-20240229"
= "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/2024/2024-06-13 DISGOMOJI/indicators/rules.yar#L104-L131"
= "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
= "d9f29a626857fa251393f056e454dfc02de53288ebe89a282bad38d03f614529"
= "dd3535079881ae9cfe25c129803668cb595be89b7f62eb82af19cc3839f92b6d"
= 75
= 80
= "TRANSPARENTJASMINE, FILE, MEMORY"
= "linux"
= "all"
= "file,memory"
= "critical"
= "See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt"
= 10265
= 7
strings:
$s1 = "Session *%s* opened!" wide ascii
$s2 = "uevent_seqnum.sh" wide ascii
$s3 = "Error downloading shell script: %v" wide ascii
$s4 = "Error setting execute permissions: %v" wide ascii
$s5 = "Error executing shell script: %v" wide ascii
$s6 = "Error creating Discord session" wide ascii
condition:
4 of them
}
Strings (6 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $s1 | text | "Session *%s* opened!" | wide ascii |
| $s2 | text | "uevent_seqnum.sh" | wide ascii |
| $s3 | text | "Error downloading shell script: %v" | wide ascii |
| $s4 | text | "Error setting execute permissions: %v" | wide ascii |
| $s5 | text | "Error executing shell script: %v" | wide ascii |
| $s6 | text | "Error creating Discord session" | wide ascii |
Condition
4 of themIn plain words (Heuristic)
- At least 4 patterns in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
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.
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: f6643e9a-ca41-57e0-9fce-571d340f1cfe
Metadata
| os | linux |
|---|---|
| os_arch | all |
| scan_context | file,memory |
| severity | critical |
| rule_id | 10265 |
| version | 7 |
Tags:TRANSPARENTJASMINEFILEMEMORY
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