Analysis

  • max time kernel
    49s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    26-06-2024 21:03

General

  • Target

    4eb4479bc171cf863692960c79fa47e5af6d5015abb6f9fa6773a59c4081e726.xls

  • Size

    714KB

  • MD5

    257657cea05f52aa9aac824a09154ba6

  • SHA1

    cd0def0e4249832315869591c8ff3245da88b0fb

  • SHA256

    4eb4479bc171cf863692960c79fa47e5af6d5015abb6f9fa6773a59c4081e726

  • SHA512

    3e40c1763a42134d572b01130ac954b6518076e6c99bd0e48c91e761ce48fb71d11501945b72f0e3e8b14863bcebccffb89247391998d72136f7a3a4e4bbd5bf

  • SSDEEP

    12288:qRsQpcLnXXzNoRKFfsIqdlV7czXZejbWAQzSY4VTZo3tq57UWGel94f:qRsWcDDiUFfBqd8zXM/ezS/VTZoU/

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\4eb4479bc171cf863692960c79fa47e5af6d5015abb6f9fa6773a59c4081e726.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2764
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe /target:winexe /out:"C:\Users\Admin\AppData\Roaming\Microsoft\yfhcan76zc84.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\tx9pwrvpflgb.cs" & "C:\Users\Admin\AppData\Roaming\Microsoft\yfhcan76zc84.exe"
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2876
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe /target:winexe /out:"C:\Users\Admin\AppData\Roaming\Microsoft\yfhcan76zc84.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\tx9pwrvpflgb.cs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2668
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES77EE.tmp" "c:\Users\Admin\AppData\Roaming\Microsoft\CSC6D81EBE549C74F0C9EA053A37F8CA9.TMP"
          4⤵
            PID:2240
        • C:\Users\Admin\AppData\Roaming\Microsoft\yfhcan76zc84.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\yfhcan76zc84.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:1200

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\RES77EE.tmp

      Filesize

      1KB

      MD5

      f6922b9f9d0ee0cff0bab62da454bb53

      SHA1

      ff17f601ddca0aa358f2c8c847220ed9b173690d

      SHA256

      4ab1ca76eaea89f89423b1447f63a9b08019a668bec84c8e0abaf7411e2892cf

      SHA512

      34d43b22bfb87e3a1a84a196f0b27aa3ffab0d08f4b59ac7f1dc9d630e1db2a0192f2323d57dd26e7e73b39d50f4967245227bd826042e972620014a1e68f006

    • \??\c:\Users\Admin\AppData\Roaming\Microsoft\CSC6D81EBE549C74F0C9EA053A37F8CA9.TMP

      Filesize

      1KB

      MD5

      94a974d8227970402968cf2e7bac141b

      SHA1

      755edcec1ad453c2f1758c6f8013bc1c5a37816f

      SHA256

      230f902aa9529fb85a0c4f3ac72c72389115b8f701449743248e5513f6f80e42

      SHA512

      947a41a714391e40c06bc9547f6332d40fd1eabc8c402a0adefe8fbcff8f4d06d63d69dc2008010aa32e9c4c0f8384fe6086f92ffcac5590d004f8a3375e6bf5

    • \??\c:\Users\Admin\AppData\Roaming\Microsoft\tx9pwrvpflgb.cs

      Filesize

      2KB

      MD5

      3d6a86624aed949ac6b72ecfac76ff6d

      SHA1

      bdbb6a1619b57c5ee0e8577fc25b74ff29c74e94

      SHA256

      b00fdf715ad530babc4a92749ff05cdeee1eb81069f28fbe4ae27933d74533e0

      SHA512

      b2fc0f8218bd9c8c534adf7c8716bb60f3de94a3e73c9e77515fa927c681d1b7c1fdc1b83a92f5ee5ef75d9a3279cc2db1a3b118332b346148a239555b14a1ae

    • \Users\Admin\AppData\Roaming\Microsoft\yfhcan76zc84.exe

      Filesize

      6KB

      MD5

      6ccf81c7296c66fd4d75cc45b041fea3

      SHA1

      7dfe733b4ac8cdf84acc9340a9bec20231d7bd01

      SHA256

      3bbc81d6b1be73e9bf47fb67c4a4f2d68fdf4d5c19309ba7a017a476890f00bd

      SHA512

      8bfe7324c3c2714746200a9c3395ac1bb7520ac6261e5928af4d2c42b298565a5e486236119456e5d06da849975223263947fdc379782526d119d7499675055e

    • memory/1200-44-0x0000000000BD0000-0x0000000000BD8000-memory.dmp

      Filesize

      32KB

    • memory/2764-18-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-29-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-2-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-9-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-10-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-14-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-16-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-24-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-23-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-22-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-21-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-20-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-19-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2764-17-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-31-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-30-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-4-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-28-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-27-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-26-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-25-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-12-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-15-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-13-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-11-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-8-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-5-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-7-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-6-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-3-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB

    • memory/2764-1-0x0000000072AFD000-0x0000000072B08000-memory.dmp

      Filesize

      44KB

    • memory/2764-45-0x0000000072AFD000-0x0000000072B08000-memory.dmp

      Filesize

      44KB

    • memory/2764-46-0x0000000000390000-0x0000000000490000-memory.dmp

      Filesize

      1024KB