Emotet Office (OOXML) / .XLSM malware analysis — malicious · dbad05cef5b36f81

MALICIOUS

Office (OOXML) / .XLSM

3.65 MB Created: 2021-05-10 15:57:36 UTC Authoring application: Microsoft Excel 15.0300

MD5: f0930d3a2a91721905679cb2646535fc SHA-1: a1f8c0a20dde2dfee51015e1520cc6014c83398b SHA-256: dbad05cef5b36f8110e68fef41c2ec024e05b8ffb761106b878f8abac4e2afc2

308 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1059.005 Visual Basic

The presence of a Workbook_Open macro, CreateObject calls, and a visible LOLBin command execution instruction strongly indicates malicious intent. The ClamAV detection of 'Doc.Downloader.Emotet-10019767-0' further confirms this, pointing to a downloader functionality. The embedded URLs are likely used to fetch and execute a second-stage payload, consistent with Emotet's typical behavior.

Heuristics 9

ClamAV: Doc.Downloader.Emotet-10019767-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-10019767-0
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND

Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
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 project inside OOXML medium OOXML_VBA

Document contains vbaProject.bin — VBA macros present
Environ() call (env variable access) low OLE_VBA_ENVIRON

Environ() call (env variable access)
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 https://inhousecare.org/GNyTpi4kVJrip.php
- https://sincroniasdelalma-new.srcomputadoras.com/wp-content/themes/twentynineteen/template-parts/content/S1tU7zL7RBAfK.php
- https://mbbsinindia.co.in/images/O7iFbbtzF.php
- https://nellyfunerals.co.za/VKzdkfe8ufv.php
- https://wartacitarum.com/wp-content/plugins/jetpack/json-endpoints/jetpack/dP0MPiEN.php
- https://quicklane.ae/llKTfaRKu9cHNme.php
- https://sensor-tek.com/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/bBNTmfXZbIc.php
- https://s3solutions.ae/d6dCRQeJGD00Os.php
- https://www.bodrumtemizlik.com.tr/galeri/big/adNWz8p6jh.php

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `a59ad67f2153f5258808b0fa648ae972a44d511ae4e1ecf96e1e70a0b70e991c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	2588292 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`vbaProject_00.bin` `2a4c4a998a52ac03abd51366ed8232bcc6fae429ba194b80b22c400489d75401`	vba-project	OOXML VBA project: xl/vbaProject.bin	5240832 bytes
Detection ClamAV: Doc.Downloader.Emotet-10019767-0 Obfuscation or payload: unlikely

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