MALICIOUS
302
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1204.002 Malicious File
T1059 Command and Scripting Interpreter
The file contains Excel 4.0 macros that are designed to download a second-stage payload from the URL 'https://ebsite1.codeomega.in/ds/26.gif'. The macros utilize WinAPI functions such as URLDownloadToFileA and ShellExecuteA, indicating an intent to download and execute a malicious file. This behavior is consistent with Qbot droppers.
Heuristics 6
-
ClamAV: Xls.Dropper.QbotDocu12020-9818439-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Dropper.QbotDocu12020-9818439-0
-
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.
-
Binary XLM macro sheet with WinAPI/download strings critical OOXML_XLM_BINARY_WINAPI_STRINGSExcel 4.0 macro sheet is stored as BIFF12/XLSB binary data and contains Win32 download or process-execution API strings such as URLDownloadToFileA, ShellExecuteA, or CreateDirectoryA. These strings are high-signal in XLM macro sheets and catch payload-download macros that XML-formula scanners cannot parse.
-
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.
-
URL reconstructed from XLM cell array (1 URL) critical OOXML_XLM_CELL_ARRAY_URLExcel 4.0 macro sheet stages its payload URL across individual numeric cells (one ASCII charcode per cell), inside an embedded HTA that uses VBScript Chr()/&-concat obfuscation, or split across multi-char fragment cells a download formula concatenates by reference (=A1&A2&… / CONCATENATE(...)). The reconstructed URL is invisible to literal-bytes URL extraction because it is never contiguous in the workbook stream. URLs were recovered by walking the BIFF12 record stream of every worksheet and macrosheet part and decoding RK/inline-string/shared-string cells in row-major and column-major order plus FORMULA cell-reference concatenation in token order.
-
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 https://ebsite1.codeomega.in/ds/26.gif Referenced by macro
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_sheet_00.bin581964282792c79e613320e827a7b43dd0b0bd59b511ea08bac1e7be04d2efb4 |
xlm-macrosheet | OOXML XLM macro sheet: xl/macrosheets/sheet1.bin | 27387 bytes |
Preview scriptFirst 1,000 lines of the extracted script
� � � @ �������� � � � � � @ d d � $ � � % �� & � q � < q <
q < q < i q < j k q < l u q < v v q < w ~ q < q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � � q < � q < q < q < q < q < q < q < q < q < q < ! ' q < ( ( q < ) + q < , - q < . 4 q < 5 5 q < 6 7 q < 8 8 q < 9 9 q < : : q < ; > q < ? ? q < @ @ q < A A q < B D q < E E q < F F q < G G q < H I q < J J q < K N q < O O q < P X q < Y Y q < Z ^ q < _ _ q < ` b q < c c q < d i q < j j q < k n q < o o q < p � q < � � q < � � q < � � q < � � q < � �? q � � % �� & % �� & h
$j �B � % �� & j % $� �D� �B � % �� & � ? �? % D� e�$) �� J C J $s !� B � % �� & � G �? - D H�$# _� J C J Ds !�D B� B � % �� & � b H D�
�$- � J J C C J J $� �Ds !�D B� DK � B � % �� & � D �B � % �� & � % �� & e E@ K D� �$s � J J C C C C J $" d�Ds !�D B� DK � B � % �� &
B 6 % �� & � N s h e l l 3 2 * s h e l l 3 2 B P % �� & � � � � $@% �� & � � � � �V@% �� & � � � �V@% �� &
� � � $@% �� & � � � @% �� & � � 2� e D� ��D� �� D4 �� Ao % �� & ) � � � @% �� & . � � � �V@% �� & 4 � � � �?% �� & : � � � N@% �� & Q � � � @% �� & R � � � ,@% �� & U � � � @% �� & a � � � 4@% �� & i � � 2� D DQ ��D: �� DU �� Ao % �� & t � � 2� u D� ��D� �� Dt �� Ao � N@% �� & � � � � �C@ � 2@% �� & � � � � T@% �� & � @k@%
... (truncated)
|
|||
Open this report in the interactive analyzer, or submit your own file for analysis.