Office (OLE) / .EXE malware analysis — malicious · 1c2957f869112878

MALICIOUS

Office (OLE) / .EXE

42.5 KB Created: 2000-02-18 09:01:00 Authoring application: Microsoft Word 8.0

MD5: c3bed1d08df670640c80618e2d49ddfb SHA-1: c2c20d1620a89182ae4341aabd62bf30d046cb28 SHA-256: 1c2957f869112878a0280813198e9a204eabab566632b316f7dcb8ac0ca3984f

300 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The file is identified as malicious by ClamAV with the signature Win.Trojan.Psycho-3. Static analysis revealed the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an attempt to execute arbitrary code. The extracted artifact was also flagged by ClamAV as Win.Trojan.wmvg-1. The document body contains seemingly innocuous text, but the critical heuristics point to malicious macro execution.

Heuristics 7

ClamAV: Win.Trojan.Psycho-3 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Psycho-3
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `5d237b69945217dadbb4f06573c6d839a72ec132cdd65c8a8fbe98267d33ce15`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	7469 bytes
Detection ClamAV: Win.Trojan.wmvg-1 Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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