Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 9624c1d86acb0348…

MALICIOUS

Office (OLE) / .XLS

71.5 KB Created: 2021-11-17 02:06:11 Authoring application: Microsoft Excel
MD5: dbaef5096ea286bb89da93d90e2c706e SHA-1: 7cd6461d6ddbc6ffe6cce57b03b496b2a50cecf3 SHA-256: 9624c1d86acb0348633d5ceb5011ae7caef3e8508df97d7f9ec1b28e39aef03a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The Excel file contains a Workbook_Open macro that executes a PowerShell command. This command downloads a second-stage executable ('joga.exe') from 'http://ddl8.data.hu/get/228872/13124415/joga.exe' and saves it as 'quiteage.exe' in the public documents directory. The macro also attempts to open a file named 'dssdd.cmzd' which appears to be a precursor to executing the downloaded payload. The document body displays a fake error message to mask the malicious activity.

Heuristics 5

  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • 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 medium 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.

FilenameKindSourceSize
macros.bas
beb7c38e06e70e98051cf9a53eba52c0fc9821558b72ae53fc2b50e54a540e71
vba-macro oletools.olevba.extract_macros (decoded VBA source) 1872 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s).