Office (OLE) / .DOC malware analysis — malicious · af731db3ff0accea

MALICIOUS

Office (OLE) / .DOC

55.0 KB Created: 2021-10-17 15:06:00 Authoring application: Microsoft Office Word

MD5: 531576d42fac0f02c88fdc36714d3d1c SHA-1: b792e083daa495aa9474e8fca8e885a6eef6b263 SHA-256: af731db3ff0accea3ed49292d5aaf903ea530de823197fd3eda5e21830c49b8d

182 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1059.003 Windows Command Shell

The sample contains a VBA macro that executes automatically upon opening the document. This macro writes a file named 'fishside.cm' to disk, which appears to be a script containing commands to download and execute a second-stage payload, 'soleApp11.exe', from 'https://searcer.x24hr.com/a/soleApp11.exe' and save it as 'lineyes.exe' in the public documents directory. The script then executes 'lineyes.exe'.

Heuristics 6

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` `e5d39f8bbb69bd511fb4997c9339321b8c15519b7b2b0c45a7be281f74a7728f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	905 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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