Office (OLE) / .DOCX malware analysis — malicious · f80522cfc06ea3e8

MALICIOUS

Office (OLE) / .DOCX

2.11 MB Created: 2021-03-09 17:29:00 Authoring application: Microsoft Office Word

MD5: 9cbf99732101389aca4f06b3f18f5e47 SHA-1: 59dc7a9dc4eb5d0273d7331b084265a355687bfb SHA-256: f80522cfc06ea3e8dc91d5ad252704fe4113927e16bb9e4e7af6d126d064d7b0

182 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The sample contains VBA macros, including an AutoOpen macro, which is a common delivery mechanism for malicious documents. Heuristics indicate the use of WinExec and cmd.exe, suggesting the macro attempts to execute commands. The presence of a heap-spray pattern further supports malicious intent. While no specific family is identified, the techniques suggest a downloader or dropper functionality.

Heuristics 6

Heap-spray pattern detected high SC_HEAP_SPRAY

Repeated 0x41 (A) bytes found
Reference to WinExec API high SC_STR_WINEXEC

Reference to WinExec API
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
cmd.exe reference in VBA high OLE_VBA_CMD

cmd.exe reference in VBA
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Embedded URL info EMBEDDED_URL

One 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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `691c0a06d4c01247f833512175ba17cf4a679b45e2a01ea031900c3946e62e6e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1619 bytes

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