Office (OLE) / .XLS malware analysis — malicious · 5104d53335e8e24a

MALICIOUS

Office (OLE) / .XLS

1.06 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-02-13

MD5: bbae7b9de48914a4b46e97df15f21759 SHA-1: fa0ec7de4e4123a35bbe37f2274693013d0ab82c SHA-256: 5104d53335e8e24add230c5940a6e3400bbaaca5fdaca129b9f94302581a8858

150 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.005 Visual Basic

The sample is an Excel file containing a malicious Equation Editor OLE object, which is a known exploit for CVE-2017-11882. This vulnerability allows for arbitrary code execution when the object is loaded. No VBA macros were found to be executable, but the presence of the exploit object indicates a high likelihood of payload delivery.

Heuristics 5

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)
VBA project contains no executable statements low OLE_VBA_MACROS

Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.
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

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1206 bytes
`ole10native_00.bin` `f911e15ebccb2afc2028d050bc7e58dd54059d71fd714174190895d6b4e2d537`	ole-package	OLE Ole10Native stream: MBD00CC0210/OLe10natIVe	1668 bytes

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