Resubmissions

16/04/2025, 23:23

250416-3dkjmsw1ds 10

16/04/2025, 23:22

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16/04/2025, 23:16

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16/04/2025, 23:10

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Analysis

  • max time kernel
    146s
  • max time network
    138s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250410-es
  • resource tags

    arch:x64arch:x86image:win11-20250410-eslocale:es-esos:windows11-21h2-x64systemwindows
  • submitted
    16/04/2025, 23:23

General

  • Target

    virusshare/1/VirusShare_0fea640a7da27f365b3675f73626b9c9.xls

  • Size

    937KB

  • MD5

    0fea640a7da27f365b3675f73626b9c9

  • SHA1

    fd4825f244e9c145486cb6930ad05695b9972668

  • SHA256

    64af94592f6707505fa6f42b58776c3635706a414e6362a92f707df84627679c

  • SHA512

    c9a10288762f3f5a3fdff17f8dd8560e7a884f1b83f405c2e85c6c86e42f69a30841c13aa0f2ecfc55aed42995d7aeb8fe40415e423ed0a306d2e7d00883dfbf

  • SSDEEP

    24576:h3zS0aqbCrxgFhFSQVB5DjDLG6/8otVBTN9s:K9Fo5VLDLGwTBT

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source

Signatures

  • TA505

    Cybercrime group active since 2015, responsible for families like Dridex and Locky.

  • Ta505 family
  • Loads dropped DLL 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 31 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\virusshare\1\VirusShare_0fea640a7da27f365b3675f73626b9c9.xls"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Enumerates system info in registry
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2396
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:3340

    Network

    MITRE ATT&CK Enterprise v16

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\xcopy00.xlsx

      Filesize

      627KB

      MD5

      b66817dbf66a48f51b99fb61540d75ef

      SHA1

      bb2dba0173eabd76afdebaa4a1e6510480bc6fb8

      SHA256

      27ddc0f52267dece22d65aaf698ec352d2543cb0a99d953b94a0fe55017bede7

      SHA512

      53a55da2a47e88e0dc812d3c529019e08c8629ca9f6088bd86ca293629c51a399384b14873f834c49d0c43b521d8a7f5dd10eef0535bb6c16ffe2a7e22cf9a0d

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\contract_.dll

      Filesize

      234KB

      MD5

      4224c05eb24238e24a124eecee907cec

      SHA1

      551979d132b3e45aaab7ea8e18441b303f49a74a

      SHA256

      6d5c207c998990f1e7c527971dfe0eb6d2b21fca136d616e6e211019d1c77698

      SHA512

      ef4b9f06fcdd091ac818974cd777a6fdf5cd88a70f8f5fad33173ae70905b8487d60acb4af2ddb6c73d2789085f28ec1134e5efdc6a9659b0417d8fa350e7638

    • memory/2396-15-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-45-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-5-0x00007FFEC7410000-0x00007FFEC7420000-memory.dmp

      Filesize

      64KB

    • memory/2396-4-0x00007FFEC7410000-0x00007FFEC7420000-memory.dmp

      Filesize

      64KB

    • memory/2396-6-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-9-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-10-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-11-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-13-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-14-0x00007FFEC4870000-0x00007FFEC4880000-memory.dmp

      Filesize

      64KB

    • memory/2396-12-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-16-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-2-0x00007FFEC7410000-0x00007FFEC7420000-memory.dmp

      Filesize

      64KB

    • memory/2396-8-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-1-0x00007FFF07423000-0x00007FFF07424000-memory.dmp

      Filesize

      4KB

    • memory/2396-19-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-7-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-20-0x00007FFEC4870000-0x00007FFEC4880000-memory.dmp

      Filesize

      64KB

    • memory/2396-17-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-18-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-0-0x00007FFEC7410000-0x00007FFEC7420000-memory.dmp

      Filesize

      64KB

    • memory/2396-3-0x00007FFEC7410000-0x00007FFEC7420000-memory.dmp

      Filesize

      64KB

    • memory/2396-199-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-201-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-200-0x00007FFF07423000-0x00007FFF07424000-memory.dmp

      Filesize

      4KB

    • memory/2396-203-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-202-0x00000000573B0000-0x0000000057402000-memory.dmp

      Filesize

      328KB

    • memory/2396-209-0x00007FFF07380000-0x00007FFF07589000-memory.dmp

      Filesize

      2.0MB

    • memory/2396-212-0x00000000573B0000-0x0000000057402000-memory.dmp

      Filesize

      328KB