Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-02-2024 22:14

General

  • Target

    b548389c0a77f5e77b0fe07725d79732e9c76162349b1f4dc506bdf29f96e511.xlsm

  • Size

    32KB

  • MD5

    d30f2b217f3ae3e8ac19c81129e7de3b

  • SHA1

    a7b076a6b84be14691e3071a219c7cbfce94adb0

  • SHA256

    b548389c0a77f5e77b0fe07725d79732e9c76162349b1f4dc506bdf29f96e511

  • SHA512

    8aaa87457c7c8b1c0087eb5abccd981238c386a34f76791b4e2908fa13b825a801c4ba6b87000a38912c50ef8d3b74ef0d341a673006f37b0764a3e39ecee4fb

  • SSDEEP

    384:wjzZPFhNjqEBOA7iEibbwBLg0SCdiVXUKgUrNU/qWhZOdBNPJM+kqr9eCgh0k5lY:wjpFhNNlizXT28dFfPdkqstJmE6/

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

https://casache.com/web/n3jxwXXwa/

xlm40.dropper

https://www.blessingsource.com/blessingsource.com/rFQ0Ip6lQXXK/

xlm40.dropper

http://ccalaire.com/wp-admin/d1pGRa0X/

xlm40.dropper

http://cdimprintpr.com/brochure2/A9NmYDndZ/

xlm40.dropper

http://careerplan.host20.uk/images/Ls/

xlm40.dropper

http://ausnz.net/2010wc/odSi5tQKkCIXEWl9/

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 3 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\b548389c0a77f5e77b0fe07725d79732e9c76162349b1f4dc506bdf29f96e511.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1396
    • C:\Windows\SysWow64\regsvr32.exe
      C:\Windows\SysWow64\regsvr32.exe -s ..\rfs.dll
      2⤵
      • Process spawned unexpected child process
      PID:4092

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\rfs.dll

    Filesize

    158KB

    MD5

    9928ddf89badc66b1ab8ae8fcbd86691

    SHA1

    02c8e7933524f390fb0f1ba9b1a2201114ba1d71

    SHA256

    b37143a6c2132fd29f3910df27b2a8d34b659b32aecee3cdfaac4a66c7633ffc

    SHA512

    58bc468a0f7a33a6210f5ce0f06321d43b36803affc7d1c756e26c6ac89c6fcf0995aec1a529d3583212e4983bbfa289a916f92186c9d8d011019239b8b3ae80

  • memory/1396-19-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-7-0x00007FFE61FB0000-0x00007FFE61FC0000-memory.dmp

    Filesize

    64KB

  • memory/1396-18-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-3-0x00007FFE61FB0000-0x00007FFE61FC0000-memory.dmp

    Filesize

    64KB

  • memory/1396-16-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-8-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-9-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-15-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-11-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-14-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-17-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-0-0x00007FFE61FB0000-0x00007FFE61FC0000-memory.dmp

    Filesize

    64KB

  • memory/1396-4-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-2-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-10-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-21-0x00007FFE5FC90000-0x00007FFE5FCA0000-memory.dmp

    Filesize

    64KB

  • memory/1396-20-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-13-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-12-0x00007FFE5FC90000-0x00007FFE5FCA0000-memory.dmp

    Filesize

    64KB

  • memory/1396-6-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-5-0x00007FFE61FB0000-0x00007FFE61FC0000-memory.dmp

    Filesize

    64KB

  • memory/1396-1-0x00007FFE61FB0000-0x00007FFE61FC0000-memory.dmp

    Filesize

    64KB

  • memory/1396-55-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-56-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB

  • memory/1396-59-0x00007FFEA1F30000-0x00007FFEA2125000-memory.dmp

    Filesize

    2.0MB