YARA · Embee Research
EMBEERESEARCH_Win_Redline_Bytecodes_Jan_2024
Bytecodes found in late 2023 Redline malware
- Author
- Matthew @ Embee_Research
- Date
- 2023-08-27
- Modified
- 2024-01-02
- Score / Quality
- 75 / 75
What this rule detects
Bytecodes found in late 2023 Redline malware
Associated malware family: RedLine.
Targets: Windows PE.
It defines 2 patterns (1 text, 1 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
rule EMBEERESEARCH_Win_Redline_Bytecodes_Jan_2024 : FILE
{
meta:
= "Bytecodes found in late 2023 Redline malware"
= "Matthew @ Embee_Research"
= "8acf0fbb-f7d1-5a3d-9ccb-ee21926d6a31"
= "2023-08-27"
= "2024-01-02"
= "https://github.com/embee-research/Yara-detection-rules/"
= "https://github.com/embee-research/Yara-detection-rules//blob/ac56d6f6fd2a30c8cb6e5c0455d6519210a8b0f4/Rules/win_redline_bytecodes_jan_2024.yar#L1-L22"
= "N/A"
= "ea1271c032046d482ed94c6d2c2c6e3ede9bea57dff13156cabca42b24fb9332"
= "43f4d718611c16983071587c2806f92550ebba6bae737c59c63cd8584a5cc01f"
= 75
= 75
= "FILE"
strings:
$s1 = {00 00 7E ?? ?? ?? 04 7E ?? ?? ?? 04 28 ?? ?? ?? 06 17 8D ?? ?? ?? 01 25 16 1F 7C 9D 6F ?? ?? ?? 0A 13 ?? 16 13 ?? 38 }
$s2 = "mscoree.dll" ascii
condition:
$s1 and $s2 and uint16( 0 ) == 0x5a4d
}
Strings (2 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $s1 | hex | {00 00 7E ?? ?? ?? 04 7E ?? ?? ?? 04 28 ?? ?? ?? 06 17 8D ?? ?? ?? 01 25 16 1F 7C 9D 6F ?? ?? ?? 0A 13 ?? 16 13 ?? 38 } | |
| $s2 | text | "mscoree.dll" | ascii |
Condition
$s1 and $s2 and uint16( 0 ) == 0x5a4dIn plain words (Heuristic)
- The file must start with “MZ” — a Windows executable (PE).
- Pattern $s1 must be present.
- Pattern $s2 must be present.
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).
- ea1271c032046d482ed94c6d2c2c6e3ede9bea57dff13156cabca42b24fb9332
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: 8acf0fbb-f7d1-5a3d-9ccb-ee21926d6a31
Tags:FILE
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