YARA · BlackBerry Research & Intelligence (via Open-Source-YARA-rules)
BLACKBERRY_Windealer_Executable
Detects WinDealer Executable
- Author
- BlackBerry Threat Research Team
- Date
- 2022-06-14
- Modified
- 2022-07-07
- Score / Quality
- 75 / 85
What this rule detects
Detects WinDealer Executable
Associated malware family: Windealer.
Targets: Windows PE.
It defines 9 patterns (9 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
rule BLACKBERRY_Windealer_Executable : FILE
{
meta:
= "Detects WinDealer Executable"
= "BlackBerry Threat Research Team"
= "68fe2b61-5c2d-5434-a9c5-dae25ccd40a0"
= "2022-06-14"
= "2022-07-07"
= "https://blogs.blackberry.com/en/2022/06/threat-thursday-china-based-apt-plays-auto-updater-card-to-deliver-windealer-malwareZ"
= "https://github.com/mikesxrs/Open-Source-YARA-rules/blob/ec0056f767db98bf6d5fd63877ad51fb54d350e9/Blackberry/Windealer_executable.yar#L1-L23"
= "N/A"
= "296e89ca89d063d165b6abab6a1e1e0b641cbbe7ff0ea60125c6beada457a95b"
= 75
= 85
= "FILE"
= "This Yara rule is provided under the Apache License 2.0 (https://www.apache.org/licenses/LICENSE-2.0) and open to any user or organization, as long as you use it under this license and ensure originator credit in any derivative to The BlackBerry Research & Intelligence Team"
strings:
$s1 = "28e4-20a6acec"
$s2 = "5a7e-42ccdb67"
$s3 = "632c-0ef22957"
$s4 = "63ae-a20cf808"
$s5 = "65ce-731bffbb"
$a1 = "remoteip"
$a2 = "sessionid"
$a3 = "remotedomain"
$a4 = "remark"
condition:
uint16( 0 ) == 0x5a4d and 2 of ( $s* ) and 1 of ( $a* )
}
Strings (9 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $s1 | text | "28e4-20a6acec" | |
| $s2 | text | "5a7e-42ccdb67" | |
| $s3 | text | "632c-0ef22957" | |
| $s4 | text | "63ae-a20cf808" | |
| $s5 | text | "65ce-731bffbb" | |
| $a1 | text | "remoteip" | |
| $a2 | text | "sessionid" | |
| $a3 | text | "remotedomain" | |
| $a4 | text | "remark" |
Condition
uint16( 0 ) == 0x5a4d and 2 of ( $s* ) and 1 of ( $a* )In plain words (Heuristic)
- The file must start with “MZ” — a Windows executable (PE).
- At least 2 patterns in ( $s* ) must match.
- At least 1 patterns in ( $a* ) 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.
Licence & attribution
Author: BlackBerry Threat Research Team
Source repository: BlackBerry Research & Intelligence (via Open-Source-YARA-rules) @ ec0056f767
Licence: Apache License 2.0 (stated in the rule's own meta)
“This Yara rule is provided under the Apache License 2.0 (https://www.apache.org/licenses/LICENSE-2.0) and open to any user or organization, as long as you use it under this license and ensure originator credit in any derivative to The BlackBerry Research & Intelligence Team”
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 68fe2b61-5c2d-5434-a9c5-dae25ccd40a0
Tags:FILE
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