Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 1e6f425b7552b680…

MALICIOUS

Office (OLE) / .XLS

294.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-05-17
MD5: 42a7b938703d1edcdb4e85b43ecc6a9b SHA-1: fc8e3468530ce7346877addab50a690fb73f9aaa SHA-256: 1e6f425b7552b680d79dc35a3d6e04cecf15cfad0b3fa06a9811f28af9981b04
70 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic

The critical heuristic firing indicates the exploitation of CVE-2017-0199 via an OLE2Link object, which attempts to download a secondary payload from the URL http://server1.childrenspiace.us/c/WWWW%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23ggg.doc. Although the VBA project itself contains no executable statements, the presence of the OLE2Link exploit strongly suggests a malicious intent to download and execute further stages. The embedded URL is the primary indicator of compromise.

Heuristics 3

  • OLE2Link / URL Moniker → remote loader — CVE-2017-0199 critical CVE likely CVE_2017_0199
    Document contains an embedded OLE link object whose URL Moniker points to a remote URL. When the host file is opened, Office follows the link, downloads the URL, and processes the response based on its Content-Type (HTA -> mshta.exe, RTF → Word, etc.) — the documented CVE-2017-0199 primitive. The URL extension is not a reliable filter; servers can return different payloads to Office's user agent.
  • 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://server1.childrenspiace.us/c/WWWW%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23ggg.doc

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1206 bytes
font_00_sfnt_off00002f55.bin
c770f9918a4512e864d5cb442b6b813020a99b29f560e058e4362ddfc8412387		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F55 11884 bytes
font_01_sfnt_off00004cc4.bin
dd457e884a659b63f960fd1c1b3ba45b073ca5832921ee06c6cae7a7d12bd11f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CC4 15280 bytes

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