Office (OLE) / .XLS malware analysis — malicious · 70d16f987dae7cfb

MALICIOUS

Office (OLE) / .XLS

145.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2022-11-22

MD5: 8d6accfa2b80d488e27e91dd423b8795 SHA-1: dff53fea38d208913c98d080567099269ce7d5bf SHA-256: 70d16f987dae7cfbbe23a264f202c837ab36cd229ca5fa55f74493f886468fb5

140 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1559.001 Component Object Model Hijacking

The critical heuristic firing for CVE_2017_11882_EQUATION_OLE10NATIVE indicates the exploitation of a known vulnerability in Microsoft Equation Editor. This, combined with the OLE_EQUATION_EDITOR heuristic, strongly suggests the file is designed to leverage this exploit. The SC_GETPC_CALL heuristic further supports the presence of shellcode. The document body is heavily obfuscated and does not provide direct clues, but the exploit itself is the primary attack vector.

Heuristics 3

Equation Editor Ole10Native payload — CVE-2017-11882 critical CVE likely CVE_2017_11882_EQUATION_OLE10NATIVE

An embedded Microsoft Equation 3.0 object (CLSID 0002CE02-0000-0000-C000-000000000046) carries an Ole10Native packager stream instead of the normal Equation Native/MTEF data. This is the weaponized Equation Editor RCE delivery shape used by CVE-2017-11882 / CVE-2018-0802 maldocs. The payload (font-record overflow + shellcode) is frequently encrypted and the stream name case-scrambled to evade scanners, but an Equation object holding an Ole10Native stream has no benign use.
Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR

Contains Equation Editor object — related to CVE-2017-11882 / CVE-2018-0802 exploitation, but CLSID presence alone is not the malformed MTEF exploit primitive.
x86 GetPC stub (CALL $+5; POP EBP) high SC_GETPC_CALL

x86 GetPC stub (CALL $+5; POP EBP)

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`ole10native_00.bin` `509ff1269bd6f2e1b593e7c932d7073acf340834d6c8ed94b9ac48ece4aadb3b`	ole-package	OLE Ole10Native stream: MBD02225218/ole10NAtIVE	1819 bytes

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