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Analysis

  • max time kernel
    149s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    16/04/2022, 05:48

General

  • Target

    kuixlbzk.xlsm

  • Size

    46KB

  • MD5

    363495acb4327435709de91edaef8338

  • SHA1

    11ea485cddc9de2db0397f02f00a564a9468f032

  • SHA256

    64d92f79a2d87571d428b7b19ef4f5c1680c24c8952a2f46b84f217cfba19766

  • SHA512

    1502abfa4494c69541cbaf3f00b176f04a45802b35a0818f0a46cd229a99dd675a7b8746efa946ea37efd7305c18a00eaba4a48c251d19d084fcbf4e575cf10e

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://eles-tech.com/css/KzMysMqFMs/

xlm40.dropper

http://gonorthhalifax.com/wp-content/yTmYyLbTKZV2czsUO/

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\kuixlbzk.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:1764
    • C:\Windows\SysWow64\regsvr32.exe
      C:\Windows\SysWow64\regsvr32.exe -s ..\xewn.dll
      2⤵
      • Process spawned unexpected child process
      PID:1772

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\xewn.dll

    Filesize

    679KB

    MD5

    8a38b7766b4b2811963c63b92c424c35

    SHA1

    4cc10da3061d883a50c79cdad8980be9f6c7bc4d

    SHA256

    bbd093ff2f04e67f857a1bf0eeddd26896d9b572aaa12c1d98681b617ce526f0

    SHA512

    75d9ec5e380765ed779ae9eb0479ce0cfd183a44ee675c17f9cf9713ea662408670a98019cc83a22b9984ad0d3cba7a40227ad3ed0497eb35e1ddd03e287fe26

  • memory/1764-54-0x000000002FE81000-0x000000002FE84000-memory.dmp

    Filesize

    12KB

  • memory/1764-55-0x00000000716A1000-0x00000000716A3000-memory.dmp

    Filesize

    8KB

  • memory/1764-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1764-57-0x000000007268D000-0x0000000072698000-memory.dmp

    Filesize

    44KB

  • memory/1772-59-0x0000000075B71000-0x0000000075B73000-memory.dmp

    Filesize

    8KB