Analysis

  • max time kernel
    141s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/10/2024, 22:28

General

  • Target

    09f6b51ca13d8f61aafc0a581541c73b1f8035d7c65c34f1ab55a9794de84a0a.exe

  • Size

    198KB

  • MD5

    e131e4e26e89fb8bee844af439cf1afc

  • SHA1

    e3e8cca073ee2174831f7b09d47748331ffadef9

  • SHA256

    09f6b51ca13d8f61aafc0a581541c73b1f8035d7c65c34f1ab55a9794de84a0a

  • SHA512

    6f533bf2247ff4668a4b6e8d9b09d53feef62d9a3d50b1c8e5086ce78cee9e4a9d5197dfc796744aea96f85c8639262ee2ffadb800872a48268212af713cc9c0

  • SSDEEP

    3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT:X2vnSwjaOcADw9cUeCOf

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in Program Files directory 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\09f6b51ca13d8f61aafc0a581541c73b1f8035d7c65c34f1ab55a9794de84a0a.exe
    "C:\Users\Admin\AppData\Local\Temp\09f6b51ca13d8f61aafc0a581541c73b1f8035d7c65c34f1ab55a9794de84a0a.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:968
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\lwjii.exe "C:\Users\Admin\AppData\Local\Temp\09f6b51ca13d8f61aafc0a581541c73b1f8035d7c65c34f1ab55a9794de84a0a.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:1368
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:1796
      • C:\Users\Admin\AppData\Local\Temp\lwjii.exe
        C:\Users\Admin\AppData\Local\Temp\\lwjii.exe "C:\Users\Admin\AppData\Local\Temp\09f6b51ca13d8f61aafc0a581541c73b1f8035d7c65c34f1ab55a9794de84a0a.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4912
        • \??\c:\Program Files\wsyot\flk.exe
          "c:\Program Files\wsyot\flk.exe" "c:\Program Files\wsyot\flkny.dll",Compliance C:\Users\Admin\AppData\Local\Temp\lwjii.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • System Location Discovery: System Language Discovery
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4020

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Program Files\wsyot\flk.exe

          Filesize

          60KB

          MD5

          889b99c52a60dd49227c5e485a016679

          SHA1

          8fa889e456aa646a4d0a4349977430ce5fa5e2d7

          SHA256

          6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

          SHA512

          08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

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

          Filesize

          198KB

          MD5

          62fc6e7d0512a1b891aab93fcd2485d1

          SHA1

          a7412552cfc306a3212d7e8013f83f89633bd75f

          SHA256

          1bdff2ea41f89976aa7cc1d1148ca912fd2e535a928ee8ebe402a39d119fd649

          SHA512

          729f03011c5aa0254d871130f4765aaf5d10206e6e6cea6d0b4ad600cdecd932a0b7cf6b78d27bacc791576f46738d82d89a07064c8f65643f558f913145bf9c

        • \??\c:\Program Files\wsyot\flkny.dll

          Filesize

          141KB

          MD5

          2d1e9e0736859b34a3764d74dda49378

          SHA1

          ede4c0ca59aa6719dfdd6fa55e9e89e71f1049e2

          SHA256

          c01d7f344856960f2ad65b5dd6546dead477e53bcdf828d93c92a0db95739f2f

          SHA512

          4442234a4ae447813dcd2964cb762c4862d11753ce98fbb7555f71c1a3a79ab63b2a3b0aa0b41492b07102b1704e6ef55ba801a375f3ac2faab97ac6e605efd0

        • memory/968-4-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/968-0-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/968-1-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/968-2-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/4020-19-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/4020-20-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/4020-23-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/4912-8-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/4912-9-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/4912-15-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB