Analysis

  • max time kernel
    106s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29-01-2023 14:15

General

  • Target

    bd83cd8d3c7dca2ae0cd02622b5f1acdc820367f6616a0cd4919211e7d09db3e.xls

  • Size

    94KB

  • MD5

    0373d4cca74d4d3484d2c63292744c0e

  • SHA1

    93f166095540e15fe4b1368408fdb45dba6e413f

  • SHA256

    bd83cd8d3c7dca2ae0cd02622b5f1acdc820367f6616a0cd4919211e7d09db3e

  • SHA512

    0693e5518aa1485efd54dba2220bb79a40198a6a30cc1c3567bfa9513f5a1e50a7cef7b9a4618a1b4fbcd3308cbb245ca318831a62a569be3755265be91bff3c

  • SSDEEP

    1536:UPPPWGGHia6YTrWVbrzQ7IrQSkbA2FcCOjDWwF19zau:4aRWVbrzQ7IrzkZ+DHMu

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 3 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\bd83cd8d3c7dca2ae0cd02622b5f1acdc820367f6616a0cd4919211e7d09db3e.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:1720
    • 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:920
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1516
    • 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:696
    • 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:1368

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/696-220-0x0000000000000000-mapping.dmp
  • memory/920-219-0x0000000000000000-mapping.dmp
  • memory/1368-221-0x0000000000000000-mapping.dmp
  • memory/1516-222-0x0000000000000000-mapping.dmp
  • memory/1720-61-0x000000000024F000-0x0000000000258000-memory.dmp
    Filesize

    36KB

  • memory/1720-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1720-54-0x000000002FA81000-0x000000002FA84000-memory.dmp
    Filesize

    12KB

  • memory/1720-60-0x000000000024F000-0x0000000000258000-memory.dmp
    Filesize

    36KB

  • memory/1720-62-0x000000000024F000-0x0000000000258000-memory.dmp
    Filesize

    36KB

  • memory/1720-63-0x000000000024F000-0x0000000000258000-memory.dmp
    Filesize

    36KB

  • memory/1720-64-0x000000000024F000-0x0000000000258000-memory.dmp
    Filesize

    36KB

  • memory/1720-58-0x00000000762B1000-0x00000000762B3000-memory.dmp
    Filesize

    8KB

  • memory/1720-57-0x00000000729ED000-0x00000000729F8000-memory.dmp
    Filesize

    44KB

  • memory/1720-59-0x000000000024F000-0x0000000000258000-memory.dmp
    Filesize

    36KB

  • memory/1720-55-0x0000000071A01000-0x0000000071A03000-memory.dmp
    Filesize

    8KB

  • memory/1720-269-0x000000000024F000-0x0000000000258000-memory.dmp
    Filesize

    36KB

  • memory/1720-268-0x000000000024F000-0x0000000000258000-memory.dmp
    Filesize

    36KB

  • memory/1720-267-0x000000000024F000-0x0000000000258000-memory.dmp
    Filesize

    36KB

  • memory/1720-382-0x000000000024F000-0x0000000000258000-memory.dmp
    Filesize

    36KB

  • memory/1720-381-0x000000000024F000-0x0000000000258000-memory.dmp
    Filesize

    36KB

  • memory/1720-380-0x000000000024F000-0x0000000000258000-memory.dmp
    Filesize

    36KB

  • memory/1720-383-0x00000000729ED000-0x00000000729F8000-memory.dmp
    Filesize

    44KB

  • memory/1720-384-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1720-385-0x00000000729ED000-0x00000000729F8000-memory.dmp
    Filesize

    44KB