YARA · ditekSHen detection
DITEKSHEN_INDICATOR_RTF_Ancalog_Exploit_Builder_Document
Detects documents generated by Phantom Crypter/Ancalog
- Author
- ditekSHen
- Date
- 2020-11-06
- Modified
- 2024-09-06
- Score / Quality
- 75 / 75
What this rule detects
Detects documents generated by Phantom Crypter/Ancalog
It defines 2 patterns (2 text, 0 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
indicator-rtf-ancalog-exploit-builder-document.yarBSD 2-Clause License
rule DITEKSHEN_INDICATOR_RTF_Ancalog_Exploit_Builder_Document : FILE
{
meta:
= "Detects documents generated by Phantom Crypter/Ancalog"
= "ditekSHen"
= "01e7f949-8ced-5355-978c-34d6e639e61a"
= "2020-11-06"
= "2024-09-06"
= "https://github.com/ditekshen/detection"
= "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/indicator_office.yar#L551-L563"
= "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
= "e458be78ca8975d067110dc38119437b3ffe55afdbfdab47468c9ed74bba9f9d"
= 75
= 75
= "FILE"
= "910000-910001"
= "910000"
= "INDICATOR.RTF.AncalogExploitBuilderDocument"
strings:
$builder1 = "{\\*\\ancalog" ascii
$builder2 = "\\ancalog" ascii
condition:
uint32( 0 ) == 0x74725c7b and 1 of ( $builder* )
}
Strings (2 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $builder1 | text | "{\\*\\ancalog" | ascii |
| $builder2 | text | "\\ancalog" | ascii |
Condition
uint32( 0 ) == 0x74725c7b and 1 of ( $builder* )In plain words (Heuristic)
- The file must start with “{\rt” — an RTF document.
- At least 1 patterns in ( $builder* ) must match.
Test this rule in your browser
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References
Licence & attribution
Author: ditekSHen
Source repository: ditekSHen detection @ e76c93dcde
Licence: BSD 2-Clause License (repository licence)
Copyright notice: Copyright 2021 by ditekSHen (https://github.com/ditekshen/detection).
Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.
Rule id: 01e7f949-8ced-5355-978c-34d6e639e61a
Metadata
| snort2_sid | 910000-910001 |
|---|---|
| snort3_sid | 910000 |
| clamav_sig | INDICATOR.RTF.AncalogExploitBuilderDocument |
Tags:FILE
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