Analysis

  • max time kernel
    148s
  • max time network
    173s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    19-04-2022 04:23

General

  • Target

    ?i=1jiqlaygt.xlsm

  • Size

    83KB

  • MD5

    3e7a72a5cf394ca9b6bddfca2793c259

  • SHA1

    3cd1eacdff52eaf83b4cdc3c4656019a5c5f288f

  • SHA256

    2243ada22b4c83d5f5470d40be8a9a88035c7264ad4404dad0776975a93da710

  • SHA512

    fbfa181b3dbfbcdf07382852063602271e10bc9abb480046640c02908faa8564eaac6cf9c90e82883e5f3c7baf564f5ad936db8f2fe73bbfd71ccd0e7ab80e05

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://mail.emilyanncain.com/cgi-bin/A7NT3ENvn/

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 7 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\_i=1jiqlaygt.xlsm
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1628
    • C:\Windows\SysWow64\rundll32.exe
      C:\Windows\SysWow64\rundll32.exe ..\erum.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
      2⤵
      • Process spawned unexpected child process
      PID:508

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\erum.ocx

    Filesize

    7KB

    MD5

    e91cd7bacfb3abed6802b39c80476127

    SHA1

    58456194aa421276903f56697d0dcb726b382846

    SHA256

    884b9474ac5ad85e41082628689579115648baf259f222b4c362afb99d1a0fb1

    SHA512

    392076e05470eb90c76fc16067279e4a426790de24785889393abfd53f19cd06340ef5e03edae1e98e0be220223c9da4f415ae3a7bc5aa085be837ef975bdfc9

  • memory/508-59-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

    Filesize

    8KB

  • memory/1628-54-0x000000002F301000-0x000000002F304000-memory.dmp

    Filesize

    12KB

  • memory/1628-55-0x00000000711B1000-0x00000000711B3000-memory.dmp

    Filesize

    8KB

  • memory/1628-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1628-57-0x000000007219D000-0x00000000721A8000-memory.dmp

    Filesize

    44KB