Analysis

  • max time kernel
    150s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2022, 16:22

General

  • Target

    8fff1bc3cb2df193acaf385c00f4ba184564e8888d092ba33f994c09af935fcb.exe

  • Size

    255KB

  • MD5

    5db163844ea1dfc37cb1824d3d90a7a1

  • SHA1

    4c51fd19f9f52a79e287f09b35f3de4dadc17c42

  • SHA256

    8fff1bc3cb2df193acaf385c00f4ba184564e8888d092ba33f994c09af935fcb

  • SHA512

    3c3bc460f14a4f0d3cfd7d2a7bbf09de9cd37e87e1a533d75eeb1ae41937b8be4921e12208e2edcefe525e2e9131f52dc351df3059e0055ab2546cb6d232e756

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJO:1xlZam+akqx6YQJXcNlEHUIQeE3mmBIf

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 5 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Executes dropped EXE 5 IoCs
  • UPX packed file 30 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Windows security modification 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Enumerates connected drives 3 TTPs 64 IoCs

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

  • Modifies WinLogon 2 TTPs 2 IoCs
  • AutoIT Executable 14 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 5 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
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 18 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8fff1bc3cb2df193acaf385c00f4ba184564e8888d092ba33f994c09af935fcb.exe
    "C:\Users\Admin\AppData\Local\Temp\8fff1bc3cb2df193acaf385c00f4ba184564e8888d092ba33f994c09af935fcb.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1416
    • C:\Windows\SysWOW64\mkrpnnonfk.exe
      mkrpnnonfk.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Loads dropped DLL
      • Windows security modification
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1780
      • C:\Windows\SysWOW64\agkfotvl.exe
        C:\Windows\system32\agkfotvl.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1236
    • C:\Windows\SysWOW64\bpqglukdpccttnb.exe
      bpqglukdpccttnb.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2036
    • C:\Windows\SysWOW64\agkfotvl.exe
      agkfotvl.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1464
    • C:\Windows\SysWOW64\zfdrimkboeumw.exe
      zfdrimkboeumw.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1240
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Windows\mydoc.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:1532
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:1764

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\Documents\PushBlock.doc.exe

      Filesize

      255KB

      MD5

      e810c1527a9628dc9f5cfc16a5d0e3eb

      SHA1

      a9d7797b2e02c14085190e6660bbecb3a1ad27b5

      SHA256

      fc36c5336acfced0eca612507aa61d79b0128af61c6e33293cb23245c239dfbc

      SHA512

      1cc600728ca98b2b54ef30fcf27c3fc0d158b3823851e81e196e5bd60e59170ffe605ee6d9c8bb5905e5fc14a380c8ff6e43f07ced6ce6c6410f05d694c7153d

    • C:\Windows\SysWOW64\agkfotvl.exe

      Filesize

      255KB

      MD5

      c81927727e22141f6ec77712757854ba

      SHA1

      e9a3e97018a53b0d0dc2ab9046fc6b833a6cab11

      SHA256

      b5f1a402b51a5f45ea1aca021b1ba1bcbdfbae6c502a57899c45a2222ed40125

      SHA512

      feca6678cd8337a3a509c1bda0b7ad8d1c5222a5532bbabb9a61bbe084da5dbe53f1c90749e4eb37673c5aeb2c929b7af587c444c58a24653fea5999fd7fae95

    • C:\Windows\SysWOW64\agkfotvl.exe

      Filesize

      255KB

      MD5

      c81927727e22141f6ec77712757854ba

      SHA1

      e9a3e97018a53b0d0dc2ab9046fc6b833a6cab11

      SHA256

      b5f1a402b51a5f45ea1aca021b1ba1bcbdfbae6c502a57899c45a2222ed40125

      SHA512

      feca6678cd8337a3a509c1bda0b7ad8d1c5222a5532bbabb9a61bbe084da5dbe53f1c90749e4eb37673c5aeb2c929b7af587c444c58a24653fea5999fd7fae95

    • C:\Windows\SysWOW64\agkfotvl.exe

      Filesize

      255KB

      MD5

      c81927727e22141f6ec77712757854ba

      SHA1

      e9a3e97018a53b0d0dc2ab9046fc6b833a6cab11

      SHA256

      b5f1a402b51a5f45ea1aca021b1ba1bcbdfbae6c502a57899c45a2222ed40125

      SHA512

      feca6678cd8337a3a509c1bda0b7ad8d1c5222a5532bbabb9a61bbe084da5dbe53f1c90749e4eb37673c5aeb2c929b7af587c444c58a24653fea5999fd7fae95

    • C:\Windows\SysWOW64\bpqglukdpccttnb.exe

      Filesize

      255KB

      MD5

      63fdcfe210ed391e0bb36571211d8c14

      SHA1

      ecb07e2607fc700a8aa5655abad0475e6bc2c4ca

      SHA256

      d6fb60d27bbd8e19b05409c4b9fd3dcbae8031ca00a58ee767a69126e4de7308

      SHA512

      ee2b26f06192d663ad924a96a457f8a69ce9cd391470b546f84b1a9e9bd50c86463039d72b3dc004ec1fd16b3036365c71076d178629677a393215f988531d26

    • C:\Windows\SysWOW64\bpqglukdpccttnb.exe

      Filesize

      255KB

      MD5

      63fdcfe210ed391e0bb36571211d8c14

      SHA1

      ecb07e2607fc700a8aa5655abad0475e6bc2c4ca

      SHA256

      d6fb60d27bbd8e19b05409c4b9fd3dcbae8031ca00a58ee767a69126e4de7308

      SHA512

      ee2b26f06192d663ad924a96a457f8a69ce9cd391470b546f84b1a9e9bd50c86463039d72b3dc004ec1fd16b3036365c71076d178629677a393215f988531d26

    • C:\Windows\SysWOW64\mkrpnnonfk.exe

      Filesize

      255KB

      MD5

      9c2e27eaa498d84aa57748914ad96166

      SHA1

      cce96bdd2c8362986faf0352a897615a01bbf768

      SHA256

      9de5ab9d982f891057a80ef910fa89df3f16f69bab8ba2d1116398d7c904e9ae

      SHA512

      f4689f37e73c26df67c2696eff0495c5d87bf0b5db15ef24711eb5c5373d4d824b14a5ef360efd30596c745f82bad61f2024798b1aeeef2a7c0b7943f027274c

    • C:\Windows\SysWOW64\mkrpnnonfk.exe

      Filesize

      255KB

      MD5

      9c2e27eaa498d84aa57748914ad96166

      SHA1

      cce96bdd2c8362986faf0352a897615a01bbf768

      SHA256

      9de5ab9d982f891057a80ef910fa89df3f16f69bab8ba2d1116398d7c904e9ae

      SHA512

      f4689f37e73c26df67c2696eff0495c5d87bf0b5db15ef24711eb5c5373d4d824b14a5ef360efd30596c745f82bad61f2024798b1aeeef2a7c0b7943f027274c

    • C:\Windows\SysWOW64\zfdrimkboeumw.exe

      Filesize

      255KB

      MD5

      8c1c8a3770999afd89ccaba69805673c

      SHA1

      d14241762adcf8c21c3e8e9be262cf0d13c03bec

      SHA256

      80813abe7cf0598b13d3897f5a7c95b5a965f45c416cb77909f8fb5b5da368e4

      SHA512

      8b5e2d3be89c1235352dfe750e44302bdc089fe6c556ea05ac9457fe074ffd444688d5eb05806680c8fd5e6ecfd47e1dc75c57d0fae88437492c899f7944e188

    • C:\Windows\SysWOW64\zfdrimkboeumw.exe

      Filesize

      255KB

      MD5

      8c1c8a3770999afd89ccaba69805673c

      SHA1

      d14241762adcf8c21c3e8e9be262cf0d13c03bec

      SHA256

      80813abe7cf0598b13d3897f5a7c95b5a965f45c416cb77909f8fb5b5da368e4

      SHA512

      8b5e2d3be89c1235352dfe750e44302bdc089fe6c556ea05ac9457fe074ffd444688d5eb05806680c8fd5e6ecfd47e1dc75c57d0fae88437492c899f7944e188

    • C:\Windows\mydoc.rtf

      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

    • \??\c:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLV.DOC.exe

      Filesize

      255KB

      MD5

      bb579a3449688ef5f374be97ca6492ae

      SHA1

      0a5bfe8a9b8f2b5e065b510704ea3a15bb4c9d3c

      SHA256

      ade21678fc35b94098b03f54f1f1b65c5391363702803f61f159b1ce9bb96c03

      SHA512

      a50d967ec3e9a542a9b980615e08f6db161e5b29b2d9a20a72d9f9f07d04afa99e6386f1786210b3bdf42f9d5b8defb82784af059cf0bdcf6687ceb4e6807e18

    • \Windows\SysWOW64\agkfotvl.exe

      Filesize

      255KB

      MD5

      c81927727e22141f6ec77712757854ba

      SHA1

      e9a3e97018a53b0d0dc2ab9046fc6b833a6cab11

      SHA256

      b5f1a402b51a5f45ea1aca021b1ba1bcbdfbae6c502a57899c45a2222ed40125

      SHA512

      feca6678cd8337a3a509c1bda0b7ad8d1c5222a5532bbabb9a61bbe084da5dbe53f1c90749e4eb37673c5aeb2c929b7af587c444c58a24653fea5999fd7fae95

    • \Windows\SysWOW64\agkfotvl.exe

      Filesize

      255KB

      MD5

      c81927727e22141f6ec77712757854ba

      SHA1

      e9a3e97018a53b0d0dc2ab9046fc6b833a6cab11

      SHA256

      b5f1a402b51a5f45ea1aca021b1ba1bcbdfbae6c502a57899c45a2222ed40125

      SHA512

      feca6678cd8337a3a509c1bda0b7ad8d1c5222a5532bbabb9a61bbe084da5dbe53f1c90749e4eb37673c5aeb2c929b7af587c444c58a24653fea5999fd7fae95

    • \Windows\SysWOW64\bpqglukdpccttnb.exe

      Filesize

      255KB

      MD5

      63fdcfe210ed391e0bb36571211d8c14

      SHA1

      ecb07e2607fc700a8aa5655abad0475e6bc2c4ca

      SHA256

      d6fb60d27bbd8e19b05409c4b9fd3dcbae8031ca00a58ee767a69126e4de7308

      SHA512

      ee2b26f06192d663ad924a96a457f8a69ce9cd391470b546f84b1a9e9bd50c86463039d72b3dc004ec1fd16b3036365c71076d178629677a393215f988531d26

    • \Windows\SysWOW64\mkrpnnonfk.exe

      Filesize

      255KB

      MD5

      9c2e27eaa498d84aa57748914ad96166

      SHA1

      cce96bdd2c8362986faf0352a897615a01bbf768

      SHA256

      9de5ab9d982f891057a80ef910fa89df3f16f69bab8ba2d1116398d7c904e9ae

      SHA512

      f4689f37e73c26df67c2696eff0495c5d87bf0b5db15ef24711eb5c5373d4d824b14a5ef360efd30596c745f82bad61f2024798b1aeeef2a7c0b7943f027274c

    • \Windows\SysWOW64\zfdrimkboeumw.exe

      Filesize

      255KB

      MD5

      8c1c8a3770999afd89ccaba69805673c

      SHA1

      d14241762adcf8c21c3e8e9be262cf0d13c03bec

      SHA256

      80813abe7cf0598b13d3897f5a7c95b5a965f45c416cb77909f8fb5b5da368e4

      SHA512

      8b5e2d3be89c1235352dfe750e44302bdc089fe6c556ea05ac9457fe074ffd444688d5eb05806680c8fd5e6ecfd47e1dc75c57d0fae88437492c899f7944e188

    • memory/1236-100-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1236-105-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1236-85-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1240-84-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1240-99-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1416-80-0x00000000032C0000-0x0000000003360000-memory.dmp

      Filesize

      640KB

    • memory/1416-79-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1416-54-0x0000000074DC1000-0x0000000074DC3000-memory.dmp

      Filesize

      8KB

    • memory/1416-87-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1464-83-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1464-98-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1464-104-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1532-101-0x0000000070F3D000-0x0000000070F48000-memory.dmp

      Filesize

      44KB

    • memory/1532-88-0x00000000724D1000-0x00000000724D4000-memory.dmp

      Filesize

      12KB

    • memory/1532-107-0x0000000070F3D000-0x0000000070F48000-memory.dmp

      Filesize

      44KB

    • memory/1532-106-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1532-89-0x000000006FF51000-0x000000006FF53000-memory.dmp

      Filesize

      8KB

    • memory/1532-92-0x0000000070F3D000-0x0000000070F48000-memory.dmp

      Filesize

      44KB

    • memory/1532-90-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1764-103-0x000007FEFB9E1000-0x000007FEFB9E3000-memory.dmp

      Filesize

      8KB

    • memory/1780-96-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1780-81-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2036-97-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2036-82-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB