Dridex — Office (OOXML) / .XLSM malware analysis

Static analysis result for SHA-256 c4f7ccdc3da14bbf…

MALICIOUS

Office (OOXML) / .XLSM

219.3 KB Created: 2021-05-07 12:31:44 UTC Authoring application: Microsoft Excel 15.0300
MD5: e2df2017a15e2f4dca1775d0abb02a5a SHA-1: d0d64bbc0448623c3e480719b9eca2105a02307b SHA-256: c4f7ccdc3da14bbff634f05c1e5c0bfc30ed7ea18bbdd645e35451c53f7b63a4
248 Risk Score

Malware Insights

Dridex · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1219 Remote Access Software

The file is an XLSM document containing a Workbook_Open macro that utilizes CreateObject to execute commands, likely downloading and running a second-stage payload. The ClamAV detection and numerous suspicious URLs further support this malicious behavior. The presence of VBA macros and the execution pattern are highly indicative of the Dridex family.

Heuristics 8

  • ClamAV: Xls.Downloader.TrendMicroDridex0521-9860965-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Downloader.TrendMicroDridex0521-9860965-0
  • 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://repvoice.com/ltYn1z6L3M0Dr4.php
    • https://argentinadanza.com/aljalil/pics/galery/100/vNvKtlT1.php
    • https://firsthand.ng/wp-content/plugins/woocommerce/src/Admin/ZD21U3Bx6LCk.php
    • https://cartoonist.me.uk/wp-content/plugins/jetpack/scss/_utilities/us1svv7BFHAuE.php
    • https://blog.techdesigners.ir/ytlRUHwAF.php
    • https://protetoestufas.com.br/plugins/rainbow/js/language/hnejZqaw.php
    • https://certifica.app.infoweb.boatcover.org/dt_091901820028/condivise/immagini/icone/icone-default-on/2NJsNm1KQuTMMVo.php
    • https://radiotupa.multsis.com.br/4uGJ27Vj5.php
    • https://37.fiveghosting.com/YyXdbwCNNeEkw.php
    • https://impulscentar.rs/wp-content/plugins/litespeed-cache/css/fonts/2KIOjQN9JSF.php

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
d6dbf920b29e4e8a477871d7ac45116ff3effdded9f337711f49d2a2d3de3efa		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 40837 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
aa25cbb831f26e637bc227ac0b0337dc91488e8a3ae664bd612bb1696067b2f2		 vba-project OOXML VBA project: xl/vbaProject.bin 252416 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.