Office (OLE) / .DOCX malware analysis — malicious · e86af2d076ca746f

MALICIOUS

Office (OLE) / .DOCX

895.5 KB

MD5: 90d1bc997dedcb4135c34a3988296035 SHA-1: a364d496f82be3c8f84f523ee4f9011750883787 SHA-256: e86af2d076ca746fba5212d73227a4483ad2439efd281b86c99039726abe3c01

310 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The presence of a Document_Open macro, coupled with critical firings for Shell() calls and p-code auto-execution, strongly indicates malicious VBA code. The ClamAV detection name 'Doc.Malware.Valyria-10016598-0' further supports a malicious classification. The VBA macros likely download and execute a second-stage payload, a common technique for malware delivery.

Heuristics 8

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
ClamAV: Doc.Malware.Valyria-10016598-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Valyria-10016598-0
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
Environ() call (env variable access) low OLE_VBA_ENVIRON

Environ() call (env variable access)

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `f269000f5e14dbfc20fe17a0162560f3067b333168d758f212cbce482cc7828a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	547929 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 535 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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