YARA · Volexity threat-intel
VOLEXITY_Apt_Malware_Macos_Reloadext_Installer
Detect the RELOADEXT installer.
- Author
- threatintel@volexity.com
- Date
- 2024-02-23
- Modified
- 2024-08-02
- Score / Quality
- 75 / 80
What this rule detects
Detect the RELOADEXT installer.
It defines 4 patterns (4 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
rule VOLEXITY_Apt_Malware_Macos_Reloadext_Installer : STORMBAMBOO FILE MEMORY
{
meta:
= "Detect the RELOADEXT installer."
= "threatintel@volexity.com"
= "c65ea2b5-ab98-5693-92ea-05c0f1ea1e5b"
= "2024-02-23"
= "2024-08-02"
= "TIB-20240227"
= "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/2024/2024-08-02 StormBamboo/rules.yar#L37-L62"
= "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
= "07e3b067dc5e5de377ce4a5eff3ccd4e6a2f1d7a47c23fe06b1ededa7aed1ab3"
= "8688796839202d95ded15e10262a7a7c7cbbae4a332b60305402e5984005d452"
= 75
= 80
= "STORMBAMBOO, FILE, MEMORY"
= "darwin"
= "all"
= "file,memory"
= "critical"
= "See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt"
= 10281
= 2
strings:
$str1 = "/CustomPlug1n/"
$str2 = "Chrome NOT installed."
$str3 = "-f force kill Chrome"
$str4 = "/*} &&cp -rf ${"
condition:
3 of them
}
Strings (4 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $str1 | text | "/CustomPlug1n/" | |
| $str2 | text | "Chrome NOT installed." | |
| $str3 | text | "-f force kill Chrome" | |
| $str4 | text | "/*} &&cp -rf ${" |
Condition
3 of themIn plain words (Heuristic)
- At least 3 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).
- 07e3b067dc5e5de377ce4a5eff3ccd4e6a2f1d7a47c23fe06b1ededa7aed1ab3
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: c65ea2b5-ab98-5693-92ea-05c0f1ea1e5b
Metadata
| os | darwin |
|---|---|
| os_arch | all |
| scan_context | file,memory |
| severity | critical |
| rule_id | 10281 |
| version | 2 |
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