Analysis

  • max time kernel
    149s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 13:06

General

  • Target

    91d283eb9428cbe236a75b5ada5bd069ecf7a4140f87bb248450d4c5aa791cab.xls

  • Size

    99KB

  • MD5

    4b6018a91c17f85799af251040b1d46d

  • SHA1

    7c567767d8ea4c94077bcc1a9dae992202b26fc7

  • SHA256

    91d283eb9428cbe236a75b5ada5bd069ecf7a4140f87bb248450d4c5aa791cab

  • SHA512

    8cd5f9ba2e0087a9963de12cf4416fa7ad298e9572ac33f4cc03faaf930472053fcb3e185bc8e2e50d10ef2215f07dd904d2331dfee24b5dae4a1a699f81da3f

  • SSDEEP

    3072:5hl6Nc7yRzs1H75wkZUgsUI4ukoRWGNmWVbrzQ7ITkN+2LX1qiD:3l6Nc7yRzs1H75wkZUgsUI4ukoRWGNEx

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 5 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\91d283eb9428cbe236a75b5ada5bd069ecf7a4140f87bb248450d4c5aa791cab.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:1736
    • 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:296
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:928
    • 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:1716
    • 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:1624

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/296-219-0x0000000000000000-mapping.dmp
  • memory/928-222-0x0000000000000000-mapping.dmp
  • memory/1624-221-0x0000000000000000-mapping.dmp
  • memory/1716-220-0x0000000000000000-mapping.dmp
  • memory/1736-75-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-223-0x00000000728FD000-0x0000000072908000-memory.dmp
    Filesize

    44KB

  • memory/1736-63-0x00000000003E0000-0x00000000003E6000-memory.dmp
    Filesize

    24KB

  • memory/1736-77-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-61-0x00000000003E0000-0x00000000003E6000-memory.dmp
    Filesize

    24KB

  • memory/1736-60-0x00000000003E0000-0x00000000003E6000-memory.dmp
    Filesize

    24KB

  • memory/1736-59-0x00000000003E0000-0x00000000003E6000-memory.dmp
    Filesize

    24KB

  • memory/1736-65-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-66-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-67-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-69-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-68-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-70-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-71-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-72-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-73-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-54-0x000000002FC81000-0x000000002FC84000-memory.dmp
    Filesize

    12KB

  • memory/1736-74-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-62-0x00000000003E0000-0x00000000003E6000-memory.dmp
    Filesize

    24KB

  • memory/1736-64-0x00000000003E0000-0x00000000003E6000-memory.dmp
    Filesize

    24KB

  • memory/1736-78-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-79-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-80-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-81-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-82-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-84-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-83-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-86-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-85-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-87-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-109-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-58-0x0000000076531000-0x0000000076533000-memory.dmp
    Filesize

    8KB

  • memory/1736-57-0x00000000728FD000-0x0000000072908000-memory.dmp
    Filesize

    44KB

  • memory/1736-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1736-55-0x0000000071911000-0x0000000071913000-memory.dmp
    Filesize

    8KB

  • memory/1736-76-0x00000000003E6000-0x00000000003EA000-memory.dmp
    Filesize

    16KB

  • memory/1736-385-0x00000000728FD000-0x0000000072908000-memory.dmp
    Filesize

    44KB