YARA · Embee Research
EMBEERESEARCH_Win_Icedid_Snowloader_Bytecodes_Oct_2023
No description has been set in the source file - EmbeeResearch
- Author
- Matthew @ Embee_Research
- Date
- 2023-08-27
- Modified
- 2023-10-18
- Score / Quality
- 75 / 75
What this rule detects
No description has been set in the source file - EmbeeResearch
Associated malware family: Icedid.
Targets: Windows PE.
It defines 3 patterns (0 text, 3 hex, 0 regex). YARA modules used: pe.
Summary generated from the rule's metadata and condition.
Rule source
Includes the imports needed to compile it on its own.
import "pe"
rule EMBEERESEARCH_Win_Icedid_Snowloader_Bytecodes_Oct_2023
{
meta:
= "No description has been set in the source file - EmbeeResearch"
= "Matthew @ Embee_Research"
= "ad5d7bf5-813d-519d-91ae-e6a69fd557df"
= "2023-08-27"
= "2023-10-18"
= "https://github.com/embee-research/Yara-detection-rules/"
= "https://github.com/embee-research/Yara-detection-rules//blob/ac56d6f6fd2a30c8cb6e5c0455d6519210a8b0f4/Rules/win_icedid_snowloader_bytecodes_oct_2023.yar#L2-L23"
= "N/A"
= "e096de90f65ff83ed0e929b330aa765a8e2322625325fb042775bff1748467cc"
= "e87928fcddf13935c91a0b5577e28efd29bb6a5c1d98e5129dec63e231601053"
= "82a01607ebdcaa73b9ff201ccb76780ad8de4a99dd3df026dcb71b0f007456ed"
= "5baa308ce130cbbe80f94fc127b083f26ae87552910c2bc6f3bae3008cf1aa63"
= 75
= 75
= ""
strings:
$s_1 = {4c 77 26 07}
$s_2 = {58 a4 53 e5}
$s_3 = {10 e1 8a c3}
condition:
( all of ( $s* ) ) and pe.number_of_exports > 20
}
Strings (3 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $s_1 | hex | {4c 77 26 07} | |
| $s_2 | hex | {58 a4 53 e5} | |
| $s_3 | hex | {10 e1 8a c3} |
Condition
( all of ( $s* ) ) and pe.number_of_exports > 20In plain words (Heuristic)
- All patterns in ( $s* ) must match.
- Uses the pe module.
- Checks exported functions or the DLL name.
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).
- e096de90f65ff83ed0e929b330aa765a8e2322625325fb042775bff1748467cc
- e87928fcddf13935c91a0b5577e28efd29bb6a5c1d98e5129dec63e231601053
- 82a01607ebdcaa73b9ff201ccb76780ad8de4a99dd3df026dcb71b0f007456ed
Licence & attribution
Author: Matthew @ Embee_Research
Source repository: Embee Research @ ac56d6f6fd
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: ad5d7bf5-813d-519d-91ae-e6a69fd557df
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