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Analysis

  • max time kernel
    119s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    30/12/2023, 10:34

General

  • Target

    16103f1f626df1b96e109ae784da2433.xlsm

  • Size

    230KB

  • MD5

    16103f1f626df1b96e109ae784da2433

  • SHA1

    ca0454f33b79d8cd5d910dac613dd3f09fbb6eb7

  • SHA256

    6d8618f80b90e900aed8ea11e9f19dd8dbe59005f1d744bd1315a6493eb52fc7

  • SHA512

    3d94f5729611ea096506eb65abf71da7ee97d8634cd5ee208ba696cfcb71c0de24d0ecd4734ce3073d5489cc5a372f497c57599a94c4c6fabaf94e85c29fc4a9

  • SSDEEP

    6144:DogkLjLh+E9xQnKIokTGqjq1K5LdcFY3Y76EbXU+7:cDLZ+EEnKICqEKJdcq3Yfbk+7

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • Blocklisted process makes network request 3 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Modifies registry class 64 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 4 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\16103f1f626df1b96e109ae784da2433.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:2088
    • C:\Windows\SysWOW64\MSHTA.exe
      MSHTA C:\ProgramData\KNFuKr.sct
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      • Modifies system certificate store
      PID:2860

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\KNFuKr.sct

    Filesize

    25KB

    MD5

    a6c647c6580acf90c8f113fc12e69978

    SHA1

    165c9eaf94f55cba6c7d6bca4d09467920af265c

    SHA256

    05a5c1f4a20dbe2c284db0ccda8ce9e449aecb28c8141faa5f38d93d6372bd6f

    SHA512

    c07dda699c98917429593d1340ae8e97aa703f6f6f12301ea7a68e948d2bec1085bd6b9b21b565d26a0185880454c937d5c9b4bf49de380d6bd7374602d5dc12

  • C:\Users\Admin\AppData\Local\Temp\Cab64CD.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar650F.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • memory/2088-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2088-1-0x0000000072ACD000-0x0000000072AD8000-memory.dmp

    Filesize

    44KB

  • memory/2088-52-0x0000000072ACD000-0x0000000072AD8000-memory.dmp

    Filesize

    44KB

  • memory/2088-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2088-57-0x0000000072ACD000-0x0000000072AD8000-memory.dmp

    Filesize

    44KB