Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-02-2024 09:59

General

  • Target

    a8dec65c1ec78b935c3f81d04fd95f7b.xls

  • Size

    149KB

  • MD5

    a8dec65c1ec78b935c3f81d04fd95f7b

  • SHA1

    e3da190108096a2731af84638da23cea90b99c6f

  • SHA256

    3a600f7bdc5f5166c9c20268c83ddd56eb867c17eb290764ada2b6d46e8affa6

  • SHA512

    cc853f1000269715b15e6282ac3b55a462d90bf73ce2e31981cd0c701286b98b079b22bc6c29620684bdb4d672b631cbca87a3ebc54b410303464102b105139d

  • SSDEEP

    3072:uzg0rbx4/LiXkxGUBrpgD8IYPFmw2jcc0lbxOrmjhJsXwT7:UgV1ugIY1

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 3 IoCs

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

  • Suspicious Office macro 1 IoCs

    Office document equipped with 4.0 macros.

  • Deletes itself 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 use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

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\a8dec65c1ec78b935c3f81d04fd95f7b.xls"
    1⤵
    • Deletes itself
    • Checks processor information in registry
    • Enumerates system info in registry
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2728
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      PID:740
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      PID:224
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:324
      • C:\Windows\system32\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1864

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\a8dec65c1ec78b935c3f81d04fd95f7b.xls

    Filesize

    172KB

    MD5

    846dde7a2292d7bb944665d63e83aab5

    SHA1

    39d30de5f6a1a4553111e099b876dc2a354d6a86

    SHA256

    3b5d83b724a25ae3af84473c50815a93bde017ce0c2b867dbe95572208ba5057

    SHA512

    b81d325d31c0be4d30f7637e67a3f523e867dcca31f582b55f6fc5fac231eee309f490935346400c72c9e5ef9e070c16abb6fc79a23000f1a5c14f87bf9d265a

  • memory/2728-0-0x00007FFC73910000-0x00007FFC73920000-memory.dmp

    Filesize

    64KB

  • memory/2728-1-0x00007FFC73910000-0x00007FFC73920000-memory.dmp

    Filesize

    64KB

  • memory/2728-2-0x00007FFC73910000-0x00007FFC73920000-memory.dmp

    Filesize

    64KB

  • memory/2728-3-0x00007FFC73910000-0x00007FFC73920000-memory.dmp

    Filesize

    64KB

  • memory/2728-4-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-5-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-6-0x00007FFC73910000-0x00007FFC73920000-memory.dmp

    Filesize

    64KB

  • memory/2728-7-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-8-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-9-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-10-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-11-0x00007FFC715B0000-0x00007FFC715C0000-memory.dmp

    Filesize

    64KB

  • memory/2728-12-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-14-0x00007FFC715B0000-0x00007FFC715C0000-memory.dmp

    Filesize

    64KB

  • memory/2728-15-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-17-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-16-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-13-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-18-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-19-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-20-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-21-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-22-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-23-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-34-0x000002704B1B0000-0x000002704B9B0000-memory.dmp

    Filesize

    8.0MB

  • memory/2728-42-0x000002704B1B0000-0x000002704B9B0000-memory.dmp

    Filesize

    8.0MB

  • memory/2728-47-0x000002704B1B0000-0x000002704B9B0000-memory.dmp

    Filesize

    8.0MB

  • memory/2728-52-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-55-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-59-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-63-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-68-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-73-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-74-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-77-0x000002704B1B0000-0x000002704B9B0000-memory.dmp

    Filesize

    8.0MB

  • memory/2728-80-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-84-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-103-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-111-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-112-0x000002704B1B0000-0x000002704B9B0000-memory.dmp

    Filesize

    8.0MB

  • memory/2728-114-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-115-0x000002704B1B0000-0x000002704B9B0000-memory.dmp

    Filesize

    8.0MB

  • memory/2728-116-0x000002704B1B0000-0x000002704B9B0000-memory.dmp

    Filesize

    8.0MB

  • memory/2728-117-0x000002704B1B0000-0x000002704B9B0000-memory.dmp

    Filesize

    8.0MB

  • memory/2728-118-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-121-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-122-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-123-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-124-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-125-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-126-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-127-0x000002704B1B0000-0x000002704B9B0000-memory.dmp

    Filesize

    8.0MB

  • memory/2728-128-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-129-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-130-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-131-0x000002704EB80000-0x000002704FB50000-memory.dmp

    Filesize

    15.8MB

  • memory/2728-132-0x000002704B1B0000-0x000002704B9B0000-memory.dmp

    Filesize

    8.0MB

  • memory/2728-145-0x00007FFC73910000-0x00007FFC73920000-memory.dmp

    Filesize

    64KB

  • memory/2728-146-0x00007FFC73910000-0x00007FFC73920000-memory.dmp

    Filesize

    64KB

  • memory/2728-148-0x00007FFC73910000-0x00007FFC73920000-memory.dmp

    Filesize

    64KB

  • memory/2728-147-0x00007FFC73910000-0x00007FFC73920000-memory.dmp

    Filesize

    64KB

  • memory/2728-149-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-151-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB

  • memory/2728-150-0x00007FFCB3890000-0x00007FFCB3A85000-memory.dmp

    Filesize

    2.0MB