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Analysis

  • max time kernel
    121s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2023, 22:18

General

  • Target

    3f9641e4827c9b455d25373c9f943d75.docx

  • Size

    11KB

  • MD5

    3f9641e4827c9b455d25373c9f943d75

  • SHA1

    b3cdd9ba7658ae28a7b98c296c61e2550fa0dbfc

  • SHA256

    939348443e7c722189e7ec28ea267e91f08345fb0ddf550152a83822e3fc957e

  • SHA512

    727aba0b693cd98669ff118a038e967984caf96f51bc4d774de515c3652698b3e3b7b450624d2b6b6805352459012fb06086e10fe1470d6b9fc6b6012f2a1ae1

  • SSDEEP

    192:CtNC0b/CVB0mYS1IqgPyHta3cOw+SiR097hffeFBzDlhiNvy:aNb/CEmwqzUk+dRYHWzDlhgvy

Score
7/10

Malware Config

Signatures

  • Abuses OpenXML format to download file from external location
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\3f9641e4827c9b455d25373c9f943d75.docx"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1852
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2624

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\Office\14.0\OfficeFileCache\FSD-{B3C7DF93-34D1-4178-A1E1-BB58C255DA26}.FSD

      Filesize

      128KB

      MD5

      c9e6e80bd7b6812580143a85557edbc6

      SHA1

      786720204323d072cbae772ba91b044af93db2df

      SHA256

      c7383b8158a01e54e66ee1628321ddd18114d7c69dc6410ad90161e72eef7cb2

      SHA512

      caba625ed2c1dd6bd1e6bf6d7c7c709ca4f4c63a3ff605bca0676729fae66bbf8a27697538bdca3ae08aca5702574e27d718e5ed0f552e320d500e8505833724

    • C:\Users\Admin\AppData\Local\Microsoft\Office\14.0\OfficeFileCache\LocalCacheFileEditManager\FSD-CNRY.FSD

      Filesize

      128KB

      MD5

      c3f1c497b82e921acc65156ab781d365

      SHA1

      f196f5c9c6892ccf8dc54766b1a8ea00a8f22ad1

      SHA256

      3124325bf282b365ba7d7f6783cafc25856169eba007942479f3bdb9d8dfe4f5

      SHA512

      1de52421977fcdcbee5d6325a9918f18241349e16d6f4a99284b22a1fb7f1b4004433c699dc70c9cce706f7b5046e5bd927963dfe0f659fdc0018d5a514388fb

    • C:\Users\Admin\AppData\Local\Microsoft\Office\14.0\OfficeFileCache\LocalCacheFileEditManager\FSD-CNRY.FSD

      Filesize

      128KB

      MD5

      392b3aac19a923322b6679de2d737c8a

      SHA1

      0e1b2c07e93707de0b78ed4949a04d4cde3ae319

      SHA256

      1a0f6fef6d5323fb3a251ba627a72bf1a2c720aa62b50a33631c85189bf5c59a

      SHA512

      8d26bee0addc681d55f72ec1580fc07e39cdfe8044b1497cb20a636a26c7b888c4cec53921901d9d97cd2dc6179f2d2de76b2d517fd5baacb6c2fcc6182f6f32

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\E25VF8N4\Белов[1].dotm

      Filesize

      17KB

      MD5

      aec910bedfa26d396747c70cf8de280b

      SHA1

      6ca06767ee2313a9ad2ec46151b5416fb1edcd9c

      SHA256

      23c41752d8d4ebf3ac8d4f00a863ef5d19dbd3ce9a68fe761ebd3585e1cf59e2

      SHA512

      08ae3e923c521a82dbde529f3972e3d6674e6b743b1b1d786aae129dcb782c858c49d9b53bf39780bdafe1686d0b795d76e9ff562081722bdb44023793ecec25

    • C:\Users\Admin\AppData\Local\Temp\{F90A49F0-6F67-4918-BEEB-2E07544890D5}

      Filesize

      128KB

      MD5

      500789d4c85eae8eea9dda73aae099f4

      SHA1

      0098788ea2204e8684e67a29122e152507af2fc2

      SHA256

      3a12740bfa13eaefaf880126c5ecebbead7855b42196195a318230f0fd3985cd

      SHA512

      d6dd2c9bb1f6bb33fd29efc168605d1a33799552b9c96d4cd4017f17a0654cf090e1c1679150bcf2151075176ee21d498f1c64053550a0c0f487474e2168e9e6

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

      Filesize

      20KB

      MD5

      c37f77d1228502ac83045ee058e07b7a

      SHA1

      1b1c763338d9613543304118060a435b7b4ba7cc

      SHA256

      70583c850ff1c85247ee8576020baa643614f1488263570131b3a509d97f9c70

      SHA512

      2ebc4f5c64081b236fe71d205c33eeedfc41300f622580e92b30cb30da1cabc47d2c9d0f36753646d4129d20890393aa7af02ab6011abf09dcde73a63d2c746a

    • memory/1852-0-0x000000002F251000-0x000000002F252000-memory.dmp

      Filesize

      4KB

    • memory/1852-2-0x000000007146D000-0x0000000071478000-memory.dmp

      Filesize

      44KB

    • memory/1852-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1852-105-0x0000000006240000-0x0000000006440000-memory.dmp

      Filesize

      2.0MB

    • memory/1852-113-0x000000007146D000-0x0000000071478000-memory.dmp

      Filesize

      44KB

    • memory/1852-114-0x0000000006240000-0x0000000006440000-memory.dmp

      Filesize

      2.0MB

    • memory/1852-117-0x0000000006240000-0x0000000006440000-memory.dmp

      Filesize

      2.0MB

    • memory/1852-144-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1852-145-0x000000007146D000-0x0000000071478000-memory.dmp

      Filesize

      44KB