Office (OLE) / .DOC malware analysis — malicious · e4f51447537fed87

MALICIOUS

Office (OLE) / .DOC

817.0 KB Created: 2010-09-19 03:13:00 Authoring application: Microsoft Office Word

MD5: caa4424264db20b96c7db30305a8320b SHA-1: 8bf59bc3cc42b33576879bf1fd720f2dbdade34c SHA-256: e4f51447537fed878b414591ee82f3b42171a5b1a6f71c2b0a79b1c5329dd1d3

302 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The sample is a malicious OLE document containing VBA macros. The presence of 'LoadLibrary' and 'GetProcAddress' API calls, along with the 'Ole10Native' heuristic, suggests an attempt to exploit a vulnerability or load external code. ClamAV detections indicate the packed artifact 'Win.Packed.Ardamax-6965118-0' is malicious. The Document_Open macro is likely responsible for initiating the malicious activity, potentially downloading and executing a second-stage payload.

Heuristics 8

OLE with Ole10Native — possible CVE-2026-21514 exploitation high CVE likely CVE_2026_21514

Document contains a Word OLE object with Ole10Native plus executable, PE, or risky remote-link indicators. CVE-2026-21514 exploits OLE metadata validation; this stronger structure is treated as likely exploitation.
ClamAV: Win.Packed.Ardamax-6965118-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Packed.Ardamax-6965118-0
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.
Reference to LoadLibrary API high SC_STR_LOADLIBRARY

Reference to LoadLibrary API
Reference to GetProcAddress API high SC_STR_GETPROCADDRESS

Reference to GetProcAddress API
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Suspicious extracted artifact info 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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `c12a9afc501f394aded96617370022359c4aadbcbfe9b3aac3c0894edacfaac4`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	367 bytes
`ole10native_00.bin` `dff0eb310f82a1523edc4d079e5914f36980bbf752778c374be5dd9fa758f055`	ole-package	OLE Ole10Native stream: ObjectPool/_1346396403/Ole10Native	807692 bytes
Detection ClamAV: Win.Packed.Ardamax-6965118-0 Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.

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