Dridex — Office (OOXML) / .XLSM malware analysis

Static analysis result for SHA-256 e9538d603de371f1…

MALICIOUS

Office (OOXML) / .XLSM

51.4 KB Created: 2021-05-07 12:32:58 UTC Authoring application: Microsoft Excel 15.0300
MD5: 50898e35d34215ed5641141caa5d9e8f SHA-1: 94af40f440dc7e2c8133dd3325c27976f8206e88 SHA-256: e9538d603de371f1acd6df02a37e17845549dba4f73523866e6067a20f366b12
248 Risk Score

Malware Insights

Dridex · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1105 Ingress Tool Transfer

The sample is an XLSM file containing a Workbook_Open macro, which is a common delivery mechanism for Dridex. The macro utilizes CreateObject to instantiate MSXML2.XMLHTTP and ADODB.Stream objects, indicative of downloading and executing a second-stage payload. It also contains calls to Wscript.Shell and rundll32.exe, suggesting command execution. The presence of numerous suspicious URLs further supports the downloader functionality.

Heuristics 8

  • ClamAV: Xls.Downloader.DridexOffice0521-9863759-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Downloader.DridexOffice0521-9863759-0
  • 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://a14.fiveghosting.com/fBSkQClRc.php
    • https://sezencin.com/ozzzpanel/js/mylibs/forms/uploader/864sv4ph.php
    • https://lerc.gov.lr/231electricity/editor/tinymce/themes/modern/Z9grXigF03Qy.php
    • https://sige.net.br/images/features/LPdbPtlR.php
    • https://ammarakhizerkhan.com/wp-includes/sodium_compat/src/Core32/ChaCha20/Dn7zOdqooZVw.php
    • https://e-commerce.sulmanrasheed.com/jNCNxrN8iGkYNh.php
    • https://chefalle.com/wp-includes/sodium_compat/namespaced/Core/ChaCha20/4Uf6CSbEGj3.php
    • https://co-deporte.com/wp-content/plugins/revslider/includes/InstagramScraper/DR34CZJP1juKE.php
    • https://impulscentar.rs/wp-content/plugins/litespeed-cache/css/fonts/2KIOjQN9JSF.php
    • https://support.groci.co.ke/qxdVqYUTid.php

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
11584e306afbc55b6e88dab8d6424c65d51c4c4853267ab523df172e1257bc7a		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 40568 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
cc8c40a2f0d4f0aaa739018fe7c71e44cff461ca2c38c2eef55660a14a4f3f74		 vba-project OOXML VBA project: xl/vbaProject.bin 261632 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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