Analysis

  • max time kernel
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/07/2026, 12:29

General

  • Target
    BullitExcelAddin64.msi
  • Size 6.4MB
  • Sample260727-ppaxpascjd
  • SHA256 924137d4a27c0cdd65d689d76f83550061a7d1fadd0cb034014c2e1c1e095bb9
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Loads dropped DLL 12 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\BullitExcelAddin64.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:2924
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3452
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 9D47DBF3FCAFB27D8C14248E1F59F0E1 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2484

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        MSID6CE.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\MSID6CE.tmp
        • Size 1.1MB
        • SHA256 021242629aeef982a9c33846cdaf5cce15f3e4eda1c12fe2360797837089c29a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSIDDE8.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\MSIDDE8.tmp
        • Size 999KB
        • SHA256 113cf8da1136187e3aa2ac96cc29c21ebb92a29dcf9e4eeaa36524c00dee8e76
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSIDF02.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\MSIDF02.tmp
        • Size 1.3MB
        • SHA256 10041098189567c4dd8e03892f04f83b3f4171cea5745b24effd0f4578a8b533
        • MD5 SHA1 SHA512 SSDEEP TLSH