Office (OLE) / .XLS malware analysis — malicious · 2ab8d5597e8054c1

MALICIOUS

Office (OLE) / .XLS

118.0 KB Created: 2021-04-13 13:37:17 Authoring application: Microsoft Excel

MD5: 312ed08158289c4b878d6144bed6744c SHA-1: 2afa0500f10f3dcb856a1ac2b116398ad679fc72 SHA-256: 2ab8d5597e8054c1cd9a20f8a306b9ee8c9871779e78c7eb75fa8fa079094616

222 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The presence of a Workbook_Open macro, along with a CreateObject call and a reference to WScript, indicates that the file is designed to execute malicious code upon opening. The embedded URL likely serves as a download location for a secondary payload. No document body text was available for further contextual analysis.

Heuristics 7

Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC

Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
Suspicious extracted artifact high 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.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — context-specific rules above attribute URLs they actually evaluated; this rule lists URLs that were present in the bytes but were not otherwise tied to a specific finding.

URL http://31.210.20.45/1xBet/AuvAZLSLmucj.ex

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `35a96cf81fd0bb27dbc2a65ba8348b4fc80e30076855fee913e48e7a7e82f07c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1147 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 8 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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