Analysis

  • max time kernel
    153s
  • max time network
    109s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-06-2022 12:52

General

  • Target

    SCAN-016063.pdf.msi

  • Size

    224KB

  • MD5

    ff82937564ff59eb6207f079cdc8e43d

  • SHA1

    7cfe0a71c4a2508a1af80e640ec8b1b034edb604

  • SHA256

    face46e6593206867da39e47001f134a00385898a36b8142a21ad54954682666

  • SHA512

    4c4c2f59ef157de6570bf16daff958d9ccdafd8ba6cf3f946cabaa413c085c05242b2499552e789f0f0bc9e1cbf0b74ec6327340d29c80a694aeddf444788ee1

Score
10/10

Malware Config

Signatures

  • Matanbuchus

    A loader sold as MaaS first seen in February 2021.

  • Blocklisted process makes network request 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates connected drives 3 TTPs 48 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Windows directory 10 IoCs
  • Modifies data under HKEY_USERS 43 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\SCAN-016063.pdf.msi
    1⤵
    • Blocklisted process makes network request
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1504
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Blocklisted process makes network request
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1992
    • C:\Windows\system32\regsvr32.exe
      regsvr32.exe -n -i:"Install" C:\Users\Admin\AppData\Local\AdobeFontPack\main.dll
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:820
      • C:\Windows\SysWOW64\regsvr32.exe
        -n -i:"Install" C:\Users\Admin\AppData\Local\AdobeFontPack\main.dll
        3⤵
        • Loads dropped DLL
        PID:1736
    • C:\Windows\system32\wscript.exe
      wscript.exe C:\Users\Admin\AppData\Local\AdobeFontPack\notify.vbs
      2⤵
        PID:1548
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1812
    • C:\Windows\system32\DrvInst.exe
      DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "0000000000000554" "0000000000000574"
      1⤵
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious use of AdjustPrivilegeToken
      PID:804

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

      Filesize

      60KB

      MD5

      308336e7f515478969b24c13ded11ede

      SHA1

      8fb0cf42b77dbbef224a1e5fc38abc2486320775

      SHA256

      889b832323726a9f10ad03f85562048fdcfe20c9ff6f9d37412cf477b4e92ff9

      SHA512

      61ad97228cd6c3909ef3ac5e4940199971f293bdd0d5eb7916e60469573a44b6287c0fa1e0b6c1389df35eb6c9a7d2a61fdb318d4a886a3821ef5a9dab3ac24f

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F2E248BEDDBB2D85122423C41028BFD4

      Filesize

      1KB

      MD5

      78f2fcaa601f2fb4ebc937ba532e7549

      SHA1

      ddfb16cd4931c973a2037d3fc83a4d7d775d05e4

      SHA256

      552f7bdcf1a7af9e6ce672017f4f12abf77240c78e761ac203d1d9d20ac89988

      SHA512

      bcad73a7a5afb7120549dd54ba1f15c551ae24c7181f008392065d1ed006e6fa4fa5a60538d52461b15a12f5292049e929cffde15cc400dec9cdfca0b36a68dd

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

      Filesize

      304B

      MD5

      ebb2bf5cede2ea9375c20458b760fb9c

      SHA1

      35ff02336318b2b671844222b015d97620a65766

      SHA256

      f139d91b4512b0ac9e0375f8e19d47be18540943f4a5a05cf970866cb9d4415b

      SHA512

      56038c23b51d64a8f9b9ff46cc1ad863199e524f673d2119f5cbce19c6066c952aee27740d4a1b0d2089b0334e370395efb26d1242df922ab0d17de2fc173020

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F2E248BEDDBB2D85122423C41028BFD4

      Filesize

      254B

      MD5

      66ef886757911e8af04c7eff542d0e2c

      SHA1

      7be3fa27d3a4cbccfef2e45386e6b41f95681b31

      SHA256

      c0e3dbc9f1cfd919fc552d92210843a0843803635787f60d75eee7b194eb8add

      SHA512

      8ee3ee121ea60c97de9229c6cecf0633c4b0c43f463622eecf3634dcf022b37bc446ca67a2787a2fc89d243061f60f29cb0b663ab375a5060ac5f4a609631fdc

    • C:\Users\Admin\AppData\Local\AdobeFontPack\main.dll

      Filesize

      401KB

      MD5

      8cb8cf84ab20159702e6803cd6ce364a

      SHA1

      05103f90540f3e8a9599e9f1ab6a11c791aec393

      SHA256

      14debc481aa0a26d3a0bdeed0e56b3ae9e301220f2606aae624d57a9d0617d6f

      SHA512

      9d9cb037b9c79f88fb89a9757f6c27848d7cc7c448594faf58cedb12925756206106235a2dd44142157e19e2c17535fa942156322768e62579aab55e6a6f64da

    • C:\Users\Admin\AppData\Local\AdobeFontPack\notify.vbs

      Filesize

      68B

      MD5

      0308aa2c8dab8a69de41f5d16679bb9b

      SHA1

      c6827bf44a433ff086e787653361859d6f6e2fb3

      SHA256

      0a7e8fd68575db5f84c18b9a26e4058323d1357e2a29a5b12278e4bfa6939489

      SHA512

      1a1ca92e3c8d52c8b5adbb3117a88d8a2a8c33eaf2f7b0d620fe006653f57f4ba0b803884616594ca31e13a1b0b59ddae52cecf044621ec44371084dac6beb72

    • \Users\Admin\AppData\Local\AdobeFontPack\main.dll

      Filesize

      401KB

      MD5

      8cb8cf84ab20159702e6803cd6ce364a

      SHA1

      05103f90540f3e8a9599e9f1ab6a11c791aec393

      SHA256

      14debc481aa0a26d3a0bdeed0e56b3ae9e301220f2606aae624d57a9d0617d6f

      SHA512

      9d9cb037b9c79f88fb89a9757f6c27848d7cc7c448594faf58cedb12925756206106235a2dd44142157e19e2c17535fa942156322768e62579aab55e6a6f64da

    • memory/1504-54-0x000007FEFB9F1000-0x000007FEFB9F3000-memory.dmp

      Filesize

      8KB

    • memory/1736-66-0x0000000075271000-0x0000000075273000-memory.dmp

      Filesize

      8KB