Office (OLE) / .DOC malware analysis — malicious · 97911a67667e73c0

MALICIOUS

Office (OLE) / .DOC

159.5 KB Created: 2020-06-29 08:46:00 Authoring application: Microsoft Office Word

MD5: 2724b111225ce89b723ab445ed056c58 SHA-1: d9b04721b2f7b832abc3fb78f3aa969bf1401ef8 SHA-256: 97911a67667e73c0c1628e2b441dd6f9ced9f142e87665e9c2f23d56c87b919c

202 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample is a malicious OLE document containing a Document_Open VBA macro. This macro acts as a shellcode loader, utilizing VirtualAlloc and a callback mechanism to execute a decoded payload. The presence of a long encoded blob and the ClamAV detection strongly suggest this macro is designed to download and execute a second-stage payload. The benign URL found is likely a red herring or part of the document's structure rather than a malicious IOC.

Heuristics 7

VBA shellcode callback loader critical OLE_VBA_SHELLCODE_CALLBACK_LOADER

VBA auto-exec macro allocates executable memory, decodes a large encoded blob into that memory, and invokes it through a callback API such as LineDDA/Enum*/CallWindowProc/CreateThread. This is a native payload loader rather than a document-parser CVE primitive.
ClamAV: Doc.Malware.Mrcr-9448567-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Mrcr-9448567-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
Reference to VirtualAlloc API medium SC_STR_VIRTUALALLOC

Reference to VirtualAlloc API
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Suspicious extracted artifact info 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` `28ec0b29d9f510b4ddba8ba6398c519dec274686063f50b85e07245b9bdd5a4e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25042 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 14 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.