Office (OLE) / .DOCX malware analysis — malicious · 21a203dde93946a1

MALICIOUS

Office (OLE) / .DOCX

132.5 KB Created: 2022-02-10 21:51:00 Authoring application: Microsoft Office Word

MD5: 337ded41d688ff318ffed88e0ecf9e94 SHA-1: d469a8c4b096adab788a0559e9f550848bcb93b3 SHA-256: 21a203dde93946a1765ec762c9990797ecd63cc5f35c07e24b9ecbebe622f5e0

242 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains VBA macros that utilize WScript.Shell to create and execute a VBScript file in the temporary directory. This script is designed to download a payload from a hardcoded URL, decrypt it using provided keys, and save it as a DLL. The presence of WScript.Shell and Shell() calls strongly indicates a malicious intent to download and execute further stages.

Heuristics 7

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
WScript.Shell usage critical OLE_VBA_WSCRIPT

WScript.Shell usage
Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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` `b907b5befbecc6e9c6f4d6e562160fa3fdb17304b193b460d19efbd156cccd2f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	4386 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 shell/COM execution token(s).

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