MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1204.002 Malicious File
The file contains Excel 4.0 macros that are reassembled from CHAR() and split formulas. These macros are designed to download and execute a DLL payload from the URL http://badionard.com/soft.dll using regsvr32. This indicates a downloader functionality.
Heuristics 5
-
Excel 4.0 macro sheet (1 sheet(s)) critical 3 related findings OOXML_XLM_MACROSHEETSpreadsheet contains an Excel 4.0 (XLM) macro sheet — XLM was a major Office malware vector during 2020-2022 and evaded many VBA-focused controls before Microsoft tightened XLM defaults. Even legitimate XLM use is rare in modern workbooks. The macro sheet is stored as XLSB/BIFF12 binary content, which many XML-only OOXML scanners miss.
-
Excel 4.0 macro sheet stored under disguised package path critical OOXML_XLM_DISGUISED_RELATIONSHIPOOXML package declares an xlMacrosheet relationship whose target is outside the canonical xl/macrosheets/ path. Excel follows the relationship type, while path-only scanners can miss the macro execution surface.
-
XLM payload reassembled from CHAR()/split formulas critical OOXML_XLM_REASSEMBLED_PAYLOADAn Excel 4.0 macro sheet builds its payload inside the formula token stream by concatenating per-character CHAR() calls and string fragments, so no WinAPI name, shell command, or URL is ever contiguous in the .bin for a literal-bytes scan to find. Reassembling the formulas recovered download/execute API names, LOLBin commands (regsvr32/rundll32/mshta/wmic/powershell), or a payload URL — the de-obfuscated download-and-run kill chain.
-
XLM payload URL string (1 URL) info OOXML_XLM_PAYLOAD_URLAn Excel 4.0 (XLM) macro-sheet workbook with download/execute evidence carries a literal http(s) URL stored as a (often UTF-16) string in the shared-string table or a cell. This is the next-stage payload host referenced by the macro download chain (URLDownloadToFile/ShellExecute); surfaced as an IOC.
-
Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://badionard.com/soft.dll Referenced by macro
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_sheet_00.bin |
xlm-macrosheet | OOXML XLM macro sheet: xl/xls/sheet1.bin | 1007414 bytes |
SHA-256: 3fd2c5ac9f1339b006d4b8558a66e92632e93690860205c61803635b864cb6a6 |
|||
Preview scriptFirst 1,000 lines of the extracted script
� � � @ �������� � Z i � � � @ ` ` � $ � � % �� & � q � < q < U <
q < �& < �� < q < �� < �� < q < � < �3 < �? q � � % �� & � i .
! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ ` a b c d e f g h i % �� & i
! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G 1 H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ ` a b c d e f g h i % �� & i
! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ \ ] ^ _ ` a b c d e f g h i % �� & i
... (truncated)
|
|||
Open this report in the interactive analyzer, or submit your own file for analysis.