Office (OLE) / .XLS malware analysis — malicious · d22422e4dfa3d697

MALICIOUS

Office (OLE) / .XLS

182.0 KB Created: 2018-12-06 20:43:11 Authoring application: Microsoft Excel First seen: 2022-07-26

MD5: 896eeab4303f2896a3142808ec21e12e SHA-1: 15059852f84673ef6c2b380cf94d8ef384eda681 SHA-256: d22422e4dfa3d697d55cf9027891ef1968c2dfd92e7a4e0e5cd87d8d0c694bcd

362 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.003 Windows Command Shell T1105 Ingress Tool Transfer

The Workbook_Open macro is triggered upon opening the spreadsheet. It utilizes WScript.Shell and Microsoft.XMLHTTP to download and execute a second-stage payload. The use of Shell() and WScript.Shell indicates a high likelihood of malicious intent to download and run external code.

Heuristics 9

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
WScript.Shell usage critical OLE_VBA_WSCRIPT

WScript.Shell usage
VBA downloads and writes a file to disk critical OLE_VBA_HTTP_DROP_EXEC

VBA reads an HTTP response body and writes it to disk (ADODB.Stream SaveToFile). Combined with the auto-exec/Shell paths this is a download-drop dropper even when the COM ProgIDs are built dynamically to evade keyword scanning.
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.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `3745131fdea7672f58c144f52e5d32e77142b23fcef230cdbdbe5fa0b0982f20`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16853 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 18 long base64-like blob(s).

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