Office (OLE) / .DOCX malware analysis — malicious · 550f02dd28ed06b6

MALICIOUS

Office (OLE) / .DOCX

57.0 KB Created: 2020-03-19 20:20:00 Authoring application: Microsoft Office Word

MD5: 0a03eca4277f94aa9aaedb7a05076bc5 SHA-1: 252c27389511fbd24dd92037d773be9e449ed088 SHA-256: 550f02dd28ed06b67ca6ffc19681754c6db21c03b412f8974cf33c05988e3ff4

140 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1059.003 Windows Command Shell

The sample contains VBA macros, including an AutoOpen macro, which is a strong indicator of malicious intent. The presence of a 'WinExec' API reference and a 'LOLBIN_RUN_COMMAND' heuristic suggests that the macro is designed to execute commands. The embedded URL 'http://britishvoices.co.uk/QR/macword' is likely used to download and execute a second-stage payload. The document body is heavily obfuscated and does not provide clear user-facing text.

Heuristics 5

Reference to WinExec API high SC_STR_WINEXEC

Reference to WinExec API
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND

Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
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://britishvoices.co.uk/QR/macword
- http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `9491d8360a7d9007c29031881a98fc443b65a6831dcd071fbcdd764e855e460f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	4107 bytes

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