Win.Trojan.Injector-6297685-1 Office (OLE) malware analysis — malicious · 3ba37c03a36a2391

MALICIOUS

Office (OLE)

163.0 KB Created: 2018-02-07 19:37:00 Authoring application: Microsoft Office Word First seen: 2018-02-19

MD5: e587f1b3a8c8443f89b07811e22d0148 SHA-1: d376ed20b55d276f3b2e13b3f49e2f0eebfdc44a SHA-256: 3ba37c03a36a2391620cd63dd3abe41c7795d5c87a2c3a51574bf81ba12f2d40

382 Risk Score

Malware Insights

Win.Trojan.Injector-6297685-1 · confidence 95%

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is a Microsoft Word document that exploits CVE-2007-3899 to drop and execute an embedded PE executable. The embedded executable was detected by ClamAV as Win.Trojan.Injector-6297685-1. The presence of an embedded executable strongly suggests a malicious attachment delivery vector.

Heuristics 7

CVE-2007-3899 — Microsoft Word malformed string memory corruption critical CVE likely CVE_2007_3899

Word OLE document has the MS07-060 malformed-string exploit shape: a Word 97-family FIB points to a malformed DOP/string-table region with an abnormal INT_MAX run, inflated text counters, and exploit payload or Mdropper.Z campaign evidence.
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.Trojan.Injector-6297685-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Injector-6297685-1
Embedded PE executable critical OLE_EMBEDDED_EXE

MZ/PE header found inside document — possible embedded executable
Ole10Native package drops an auto-executable payload critical OFFICE_PACKAGE_RISKY_FILE

OLE Package displayName or fullPath ends in a directly auto-executable extension (a runnable binary or a script the default shell host runs on double-click). Embedding such a payload inside an Office document has no benign authoring use — it is a malware-delivery dropper.
Reference to ShellExecute API high SC_STR_SHELLEXEC

Reference to ShellExecute API
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 In document text (OLE body)

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_office_00003099.exe`	embedded-pe	Office MZ+PE at offset 0x3099	154471 bytes
SHA-256: `6db1624079651baf70dca1c81f788b00e8c9ba08f8509c2863a3565d133f5d08`
Detection ClamAV: Win.Trojan.Injector-6297685-1 Obfuscation or payload: unlikely
`ole10native_00.bin`	ole-package	OLE Ole10Native stream: ObjectPool/_1579541115/Ole10Native	145837 bytes
SHA-256: `f43d569169d0147007d639e25445fa436fff5c0cb3a441c12c691ba00957148b`
Detection ClamAV: Win.Trojan.Injector-6297685-1 Obfuscation or payload: unlikely

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