Office (OLE) / .XLS malware analysis — malicious · 85ac52fb1a85659b

MALICIOUS

Office (OLE) / .XLS

34.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel

MD5: 9e471c6c4f44270b058b9992af69cd78 SHA-1: 49c13b3fb77c9ce36c7c150e479dac073f0e164d SHA-256: 85ac52fb1a85659b8aa0ee82a62720f55e2d3731870927ab82539bdd7c3908fa

220 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is an Excel spreadsheet containing VBA macros. The 'Workbook_Open' macro is configured to execute a shell command, likely to download and run a second-stage payload. The document body contains a lure instructing the user to enable editing and content, a common tactic for macro-based malware.

Heuristics 6

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open 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
Macro/content-enable lure medium SE_ENABLE_LURE

Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `d29313eda06f1ff06c6e14ec7b63937e4be80c419accc188c71a2db84b4056df`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	5894 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 43 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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