Office (OLE) / .DOC malware analysis — malicious · f0e8f73ca3440e31

MALICIOUS

Office (OLE) / .DOC

167.5 KB Created: 2021-01-22 19:01:00 Authoring application: Microsoft Office Word

MD5: 14aabb3f4b8f04b3b958dd06f068437b SHA-1: 6b3a78547c6cb4d3252d2bc2ca3cdb3b65931b94 SHA-256: f0e8f73ca3440e3149e06d609d6d298821b2b9cc01425d2101795df2df2a3956

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The critical ClamAV detection and multiple high-severity OLE heuristics indicate malicious VBA macros. Specifically, the 'OLE_VBA_DOCOPEN' and 'OLE_VBA_PCODE_AUTOEXEC_EXEC' firings confirm an auto-executing macro that uses 'CreateObject' to likely download and execute a second-stage payload. The presence of 'macros.bas' further supports this. The document body content is heavily obfuscated and does not provide clear user-facing lures.

Heuristics 7

ClamAV: Doc.Malware.Emodldr-10033991-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emodldr-10033991-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC

Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
Suspicious extracted artifact high 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.
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` `cccbbef73162f8c0889b0e891cc7e448a4aa887628c070a3ddc5747c0824b867`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16627 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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