Office (OOXML) malware analysis — malicious · 1251619bc350a340

MALICIOUS

Office (OOXML)

66.0 KB Created: 2020-08-07 11:17:10 UTC Authoring application: Microsoft Excel 12.0000 First seen: 2020-09-15

MD5: 1aeb1c3b3954dd68068f1d83f33a3834 SHA-1: 7e1444e5763a0baf8aea34e58cfcab4da5ca2078 SHA-256: 1251619bc350a3403686e2b3ee43610356d2dbf48c1dfb1edea11bdbc770fee1

62 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The sample is an OOXML file containing an embedded OLE object identified as an Equation Editor object. This is a common technique used to exploit vulnerabilities, such as CVE-2017-11882, to achieve arbitrary code execution on the victim's machine. No scripts or document body text were extracted, limiting further analysis of the specific payload.

Heuristics 3

Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR

Embedded OLE object xl/embeddings/oleObject1.bin contains the Equation Editor CLSID, the legacy component exploited by CVE-2017-11882, CVE-2018-0802, and CVE-2018-0798.
Embedded OLE object medium OOXML_OLE_OBJECT

Document contains an embedded OLE object
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
`ooxml_oleobject_00.bin`	ooxml-ole-object	OOXML embedded OLE part: xl/embeddings/oleObject1.bin	62976 bytes
SHA-256: `fbcae31e5fccfe995bcbdd6f69dc2862a2483dec3b0b1e06401c54b82927c89c`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.91, consistent with packed or encrypted content.
`ooxml_oleobject_00_ole10native_00.bin`	ole-package	OOXML xl/embeddings/oleObject1.bin Ole10Native stream: Ole10Native	59913 bytes
SHA-256: `0e9fefdc304874c375b57a2be7b544715bcf2d991049ae932b6afae430c8db84`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 8.00, consistent with packed or encrypted content.

Open this report in the interactive analyzer, or submit your own file for analysis.