Analysis

  • max time kernel
    100s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 12:06

General

  • Target

    a92162739cfb9368380273095072e2a82535dc9925d0e9290e90fd919e493f0e.xls

  • Size

    107KB

  • MD5

    d32be134c37ff510ed305664a0f8d6aa

  • SHA1

    571b45d07715563fdb3be6a2b85b748e7b21ea5e

  • SHA256

    a92162739cfb9368380273095072e2a82535dc9925d0e9290e90fd919e493f0e

  • SHA512

    d3f5a27efc931831670ffd7646604985ed068b64c37b99ad98cf1d2d1d1bd3881f721b18cc656f8966e0f0adb8dcb6be695e222c6fefdbaa3666c93930a08771

  • SSDEEP

    1536:QlllBJTYaYgoA0+k2i9WVbrzcidU97ITkR62liz2cJtXwRoM2M/MugBc:D+/6WVbrzM97ITk9iFJtXw15kFBc

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\a92162739cfb9368380273095072e2a82535dc9925d0e9290e90fd919e493f0e.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:1096
    • 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:628
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1552
    • 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:1344
    • 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:584

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/584-61-0x0000000000000000-mapping.dmp
  • memory/628-59-0x0000000000000000-mapping.dmp
  • memory/1096-54-0x000000002FB21000-0x000000002FB24000-memory.dmp
    Filesize

    12KB

  • memory/1096-55-0x00000000714A1000-0x00000000714A3000-memory.dmp
    Filesize

    8KB

  • memory/1096-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1096-57-0x0000000075211000-0x0000000075213000-memory.dmp
    Filesize

    8KB

  • memory/1096-58-0x000000007248D000-0x0000000072498000-memory.dmp
    Filesize

    44KB

  • memory/1096-63-0x000000007248D000-0x0000000072498000-memory.dmp
    Filesize

    44KB

  • memory/1096-64-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1096-65-0x000000007248D000-0x0000000072498000-memory.dmp
    Filesize

    44KB

  • memory/1344-60-0x0000000000000000-mapping.dmp
  • memory/1552-62-0x0000000000000000-mapping.dmp