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Resubmissions

11/01/2023, 03:20

230111-dvwksseb6y 10

10/01/2023, 18:55

230110-xkrnmshb25 10

Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    10/01/2023, 18:55

General

  • Target

    PO 90809.rtf

  • Size

    32KB

  • MD5

    ef93fa6845a7f03d2809cf03a14e0c39

  • SHA1

    d2e4d2a05c854705fa43d40b5db4ff414b28a586

  • SHA256

    4659186cccfb9bb9cf85deb8456bd9dcc4a55a5efb81d5498403c795eae490f9

  • SHA512

    d63b6f0180fc0b93eff8ff67049d7bb4466cd30e78f85ba8542d3d02662d04d41d2d6a23c22d0e33fb2a808ebc36cab2fced2e698c136da13b801d6209277e00

  • SSDEEP

    768:bFx0XaIsnPRIa4fwJMZasp60BjDpA7V/HUMpqX6ZivAsrtAzckNdvG:bf0Xvx3EMZaCHB3pqHUMEq4vAzckNVG

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

pe63

Decoy

iparkshonan.com

cahoonset.com

chuliji.com

judiangka.boats

casadecanyonlane.com

hukaol.xyz

websiteclonescripts.com

jjlpoi.com

e-insurance.africa

buketubalonu.com

foruminati.se

12rivalo.xyz

bblifebizsolutions.com

larimarfitness.com

conectado.xyz

511271.com

shpte-energy.net

thewayit.net

jpdentistry.co.uk

aisini5201314.love

Signatures

  • Formbook

    Formbook is a data stealing malware which is capable of stealing data.

  • Formbook payload 3 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1420
    • 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\PO 90809.rtf"
      2⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1708
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:916
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\SysWOW64\rundll32.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:696
        • C:\Windows\SysWOW64\cmd.exe
          /c del "C:\Users\Admin\AppData\Local\Temp\ospmnvzt.exe"
          3⤵
            PID:1020
      • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
        "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
        1⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Launches Equation Editor
        • Suspicious use of WriteProcessMemory
        PID:1984
        • C:\Users\Admin\AppData\Roaming\binkellyncru65.exe
          "C:\Users\Admin\AppData\Roaming\binkellyncru65.exe"
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:884
          • C:\Users\Admin\AppData\Local\Temp\ospmnvzt.exe
            "C:\Users\Admin\AppData\Local\Temp\ospmnvzt.exe" C:\Users\Admin\AppData\Local\Temp\jhmocq.jx
            3⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of SetThreadContext
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:1048
            • C:\Users\Admin\AppData\Local\Temp\ospmnvzt.exe
              "C:\Users\Admin\AppData\Local\Temp\ospmnvzt.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of AdjustPrivilegeToken
              PID:268

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\jhmocq.jx

        Filesize

        5KB

        MD5

        f0d6ce29c7d4a2b7f3a7ff69b6cf5353

        SHA1

        2a895a4bd1bcf5a22c38d61779f9057766e52c40

        SHA256

        f4d49ec517044d0d5ec1a29436be9c69c250acf4be1e5ac7af43791a6ef271f3

        SHA512

        f00281d0a800dee3156fc8bfee556293524a2238b503142d52db8dd3e39aa640f549c7df703aef6e1b76ca852dee922b6e71338d27e253e5d27e203a59406a2c

      • C:\Users\Admin\AppData\Local\Temp\oexfqcgd.z

        Filesize

        205KB

        MD5

        a7cedf82866ca1e803f6e469966409a7

        SHA1

        b16b972065225947fcfec017c3ce28eb65883b1f

        SHA256

        7d95851fcc91a44755f6a63b90b6b2c5ea4c6d437f7e05dd73d571531fbb6929

        SHA512

        63fa6d0c1bfc88e428d44193fe7d6a7cec3619f6d804c2bc9dd93982f4673cf46b441460cbb9191f93d82b66956c12e31ad72c561173d7ebbdad95ecef9754a6

      • C:\Users\Admin\AppData\Local\Temp\ospmnvzt.exe

        Filesize

        84KB

        MD5

        77e08260b20d281991363ada629a346c

        SHA1

        567caa29d7ed00cc68dd9e0ffedc01bfe94d8036

        SHA256

        7c99378533b2d867be3c7a441ec63437a2af1f29ec52b5cfd02b387176166c41

        SHA512

        fa51ad302c0cc72529b1a873e776ac01483379648c6c531909ed288a0bf8deac1048685d49868bb481c0187ecc434b2f2e3b81073198ff674bb2089be3c37684

      • C:\Users\Admin\AppData\Local\Temp\ospmnvzt.exe

        Filesize

        84KB

        MD5

        77e08260b20d281991363ada629a346c

        SHA1

        567caa29d7ed00cc68dd9e0ffedc01bfe94d8036

        SHA256

        7c99378533b2d867be3c7a441ec63437a2af1f29ec52b5cfd02b387176166c41

        SHA512

        fa51ad302c0cc72529b1a873e776ac01483379648c6c531909ed288a0bf8deac1048685d49868bb481c0187ecc434b2f2e3b81073198ff674bb2089be3c37684

      • C:\Users\Admin\AppData\Local\Temp\ospmnvzt.exe

        Filesize

        84KB

        MD5

        77e08260b20d281991363ada629a346c

        SHA1

        567caa29d7ed00cc68dd9e0ffedc01bfe94d8036

        SHA256

        7c99378533b2d867be3c7a441ec63437a2af1f29ec52b5cfd02b387176166c41

        SHA512

        fa51ad302c0cc72529b1a873e776ac01483379648c6c531909ed288a0bf8deac1048685d49868bb481c0187ecc434b2f2e3b81073198ff674bb2089be3c37684

      • C:\Users\Admin\AppData\Roaming\binkellyncru65.exe

        Filesize

        444KB

        MD5

        5868b13243f0fbbdbb63957ff8f720e7

        SHA1

        9606a69b84265c795dd87bf76287d6421a700de7

        SHA256

        f7bb2d35300a95c164089832c13410023d2293390130109ae3693fd0d05a3df8

        SHA512

        b728580d9e1e6c188f034ca3f5a4004cad9c07721257169b3d8b6087f45aebe09cdcfb635990cf86c059bcd2b81e1aa1a980a25354117f0279884581e87b1446

      • C:\Users\Admin\AppData\Roaming\binkellyncru65.exe

        Filesize

        444KB

        MD5

        5868b13243f0fbbdbb63957ff8f720e7

        SHA1

        9606a69b84265c795dd87bf76287d6421a700de7

        SHA256

        f7bb2d35300a95c164089832c13410023d2293390130109ae3693fd0d05a3df8

        SHA512

        b728580d9e1e6c188f034ca3f5a4004cad9c07721257169b3d8b6087f45aebe09cdcfb635990cf86c059bcd2b81e1aa1a980a25354117f0279884581e87b1446

      • \Users\Admin\AppData\Local\Temp\ospmnvzt.exe

        Filesize

        84KB

        MD5

        77e08260b20d281991363ada629a346c

        SHA1

        567caa29d7ed00cc68dd9e0ffedc01bfe94d8036

        SHA256

        7c99378533b2d867be3c7a441ec63437a2af1f29ec52b5cfd02b387176166c41

        SHA512

        fa51ad302c0cc72529b1a873e776ac01483379648c6c531909ed288a0bf8deac1048685d49868bb481c0187ecc434b2f2e3b81073198ff674bb2089be3c37684

      • \Users\Admin\AppData\Local\Temp\ospmnvzt.exe

        Filesize

        84KB

        MD5

        77e08260b20d281991363ada629a346c

        SHA1

        567caa29d7ed00cc68dd9e0ffedc01bfe94d8036

        SHA256

        7c99378533b2d867be3c7a441ec63437a2af1f29ec52b5cfd02b387176166c41

        SHA512

        fa51ad302c0cc72529b1a873e776ac01483379648c6c531909ed288a0bf8deac1048685d49868bb481c0187ecc434b2f2e3b81073198ff674bb2089be3c37684

      • \Users\Admin\AppData\Local\Temp\ospmnvzt.exe

        Filesize

        84KB

        MD5

        77e08260b20d281991363ada629a346c

        SHA1

        567caa29d7ed00cc68dd9e0ffedc01bfe94d8036

        SHA256

        7c99378533b2d867be3c7a441ec63437a2af1f29ec52b5cfd02b387176166c41

        SHA512

        fa51ad302c0cc72529b1a873e776ac01483379648c6c531909ed288a0bf8deac1048685d49868bb481c0187ecc434b2f2e3b81073198ff674bb2089be3c37684

      • \Users\Admin\AppData\Roaming\binkellyncru65.exe

        Filesize

        444KB

        MD5

        5868b13243f0fbbdbb63957ff8f720e7

        SHA1

        9606a69b84265c795dd87bf76287d6421a700de7

        SHA256

        f7bb2d35300a95c164089832c13410023d2293390130109ae3693fd0d05a3df8

        SHA512

        b728580d9e1e6c188f034ca3f5a4004cad9c07721257169b3d8b6087f45aebe09cdcfb635990cf86c059bcd2b81e1aa1a980a25354117f0279884581e87b1446

      • memory/268-76-0x0000000000930000-0x0000000000C33000-memory.dmp

        Filesize

        3.0MB

      • memory/268-77-0x00000000002B0000-0x00000000002C5000-memory.dmp

        Filesize

        84KB

      • memory/268-75-0x0000000000400000-0x000000000042F000-memory.dmp

        Filesize

        188KB

      • memory/696-86-0x0000000000920000-0x00000000009B4000-memory.dmp

        Filesize

        592KB

      • memory/696-85-0x00000000021E0000-0x00000000024E3000-memory.dmp

        Filesize

        3.0MB

      • memory/696-87-0x00000000000D0000-0x00000000000FF000-memory.dmp

        Filesize

        188KB

      • memory/696-83-0x00000000007F0000-0x00000000007FE000-memory.dmp

        Filesize

        56KB

      • memory/696-84-0x00000000000D0000-0x00000000000FF000-memory.dmp

        Filesize

        188KB

      • memory/916-90-0x000007FEFBD81000-0x000007FEFBD83000-memory.dmp

        Filesize

        8KB

      • memory/1420-78-0x00000000070F0000-0x000000000722C000-memory.dmp

        Filesize

        1.2MB

      • memory/1420-89-0x0000000007ED0000-0x0000000008025000-memory.dmp

        Filesize

        1.3MB

      • memory/1420-91-0x0000000007ED0000-0x0000000008025000-memory.dmp

        Filesize

        1.3MB

      • memory/1708-82-0x000000007113D000-0x0000000071148000-memory.dmp

        Filesize

        44KB

      • memory/1708-55-0x0000000070151000-0x0000000070153000-memory.dmp

        Filesize

        8KB

      • memory/1708-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/1708-57-0x0000000076121000-0x0000000076123000-memory.dmp

        Filesize

        8KB

      • memory/1708-58-0x000000007113D000-0x0000000071148000-memory.dmp

        Filesize

        44KB

      • memory/1708-54-0x00000000726D1000-0x00000000726D4000-memory.dmp

        Filesize

        12KB

      • memory/1708-92-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/1708-93-0x000000007113D000-0x0000000071148000-memory.dmp

        Filesize

        44KB