Office (OLE) / .DOCX malware analysis — malicious · d4e80a07bdcec3d5

MALICIOUS

Office (OLE) / .DOCX

830.5 KB Created: 2000-06-02 19:46:00 Authoring application: Microsoft Word 8.0

MD5: e465cf2f8c807e568344cbf5d4a9c751 SHA-1: 078cf2372ea596e2db7c1dd280a35665a2fa22ac SHA-256: d4e80a07bdcec3d5639a8041d573c627433ecf3ec3c704f636689cc324f509cb

348 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains VBA macros, including AutoOpen and Document_Open, which are commonly used to initiate malicious execution upon opening the document. A critical heuristic firing indicates a Shell() call within the VBA code, suggesting the execution of arbitrary commands. This is further supported by the 'VBA p-code auto-exec with execution tokens' firing. The ClamAV detection of 'Doc.Trojan.Ashu-1' confirms its malicious nature. The primary intent appears to be the execution of a second-stage payload via the Shell() function.

Heuristics 9

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
ClamAV: Doc.Trojan.Ashu-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Ashu-1
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
Auto_Close macro high OLE_VBA_AUTOCLOSE

Auto_Close macro
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` `8686cdf303dcc289121c4864dfb706f3f818fe162e5c1099a81a2c0566af15b2`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1544025 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 79 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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