Analysis

  • max time kernel
    101s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    11-01-2023 19:02

General

  • Target

    a1a4cb1a40cadb40e2753f8a16c6c2b2.xls

  • Size

    165KB

  • MD5

    a1a4cb1a40cadb40e2753f8a16c6c2b2

  • SHA1

    a8272750be6afeb5dfd1f8a8e5c42d739264b83b

  • SHA256

    917dd6ceaf87ebce3828de720daca36e97a8b00f9c861fafab8021f7816aa61b

  • SHA512

    46cec0470e2809ebf81e45dbc5b2b9ea403b156e1f8603bcaabb6b3676ed62056da2e770361250c2bca19219d27246cc519ba5f435cfbad72d79339a119afece

  • SSDEEP

    1536:XndEEEmZCdB3j2GgC9RG/E+XmEoExtImYqG8PYs7bqNB4tOnJiy2jcc0lbxOvTgE:XjSyYs+nJiy2jcc0lbxOrlpe/XY

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.

  • Deletes itself 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
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • Views/modifies file attributes 1 TTPs 1 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\a1a4cb1a40cadb40e2753f8a16c6c2b2.xls
    1⤵
    • Deletes itself
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: RenamesItself
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1576
    • C:\Windows\SysWOW64\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:1076
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1016
    • C:\Windows\SysWOW64\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:2040
    • C:\Windows\SysWOW64\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:1472

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Hidden Files and Directories

1
T1158

Defense Evasion

Modify Registry

1
T1112

Hidden Files and Directories

1
T1158

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1016-216-0x0000000000000000-mapping.dmp
  • memory/1076-213-0x0000000000000000-mapping.dmp
  • memory/1472-215-0x0000000000000000-mapping.dmp
  • memory/1576-69-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-55-0x0000000071451000-0x0000000071453000-memory.dmp
    Filesize

    8KB

  • memory/1576-60-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-59-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-61-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-62-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-74-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-65-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-64-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-66-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-67-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-68-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-70-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-54-0x000000002F2C1000-0x000000002F2C4000-memory.dmp
    Filesize

    12KB

  • memory/1576-395-0x000000007243D000-0x0000000072448000-memory.dmp
    Filesize

    44KB

  • memory/1576-58-0x0000000075B11000-0x0000000075B13000-memory.dmp
    Filesize

    8KB

  • memory/1576-63-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-73-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-76-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-75-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-77-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-78-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-79-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-80-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-81-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-103-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-57-0x000000007243D000-0x0000000072448000-memory.dmp
    Filesize

    44KB

  • memory/1576-71-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1576-72-0x00000000007BF000-0x00000000007C3000-memory.dmp
    Filesize

    16KB

  • memory/1576-393-0x000000007243D000-0x0000000072448000-memory.dmp
    Filesize

    44KB

  • memory/2040-214-0x0000000000000000-mapping.dmp