Office (OLE) / .XLS malware analysis — malicious · 8c25a253de665e9e

MALICIOUS

Office (OLE) / .XLS

384.0 KB Created: 2021-04-13 13:37:17 Authoring application: Microsoft Excel First seen: 2021-10-23

MD5: 88d95523bfdb6c3e9dd2d53476371e03 SHA-1: b8829131e080457718de53b1a1fb52f0d34105fc SHA-256: 8c25a253de665e9eed4321eb2a172e4bf0b0acbe78ef4365cfff9247e625260b

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The Workbook_Open macro executes a command that writes a PowerShell command to 'C:\Users\Public\Documents\himselfdespite.cmd'. This command then downloads a second-stage payload from 'http://18.195.143.183/8/8/ENP_5080010136520.exe' and saves it as 'C:\Users\Public\Documents\humandespite.exe'. Finally, the macro uses 'CreateObject' to execute the downloaded file.

Heuristics 5

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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `c0eed0cc4e3794ccdd17181259cc70222fa5165f3ea3e672a7f2157a0f110b38`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1236 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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