Analysis

  • max time kernel
    140s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/05/2024, 01:59

General

  • Target

    4bd87d24066d91830ef74d3aa71a2630_NEAS.exe

  • Size

    211KB

  • MD5

    4bd87d24066d91830ef74d3aa71a2630

  • SHA1

    8a713e1ee7485f7911fcb71dbbfc078d3419799b

  • SHA256

    5dc975b944afea6185e108a1e3e1f8629c8a70d3871b44647e0457f13e962380

  • SHA512

    13d2909e65673b4c782e84af132d7dc83227e965b934358ca16d344b68849f8a492ee36a6ab248f09246b03afbdbf2e7572c342b40d41a520300ea2db71ec8cb

  • SSDEEP

    6144:uVtV0QPQCnSQsTEWYChnUnPJuHC3vcWY:ubVQk1wnGACvc

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 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
  • 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\4bd87d24066d91830ef74d3aa71a2630_NEAS.exe
    "C:\Users\Admin\AppData\Local\Temp\4bd87d24066d91830ef74d3aa71a2630_NEAS.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3368
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\tpbpv.exe "C:\Users\Admin\AppData\Local\Temp\4bd87d24066d91830ef74d3aa71a2630_NEAS.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2972
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:3424
      • C:\Users\Admin\AppData\Local\Temp\tpbpv.exe
        C:\Users\Admin\AppData\Local\Temp\\tpbpv.exe "C:\Users\Admin\AppData\Local\Temp\4bd87d24066d91830ef74d3aa71a2630_NEAS.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1708
        • \??\c:\Program Files\csrwo\jne.exe
          "c:\Program Files\csrwo\jne.exe" "c:\Program Files\csrwo\jneuq.dll",Group C:\Users\Admin\AppData\Local\Temp\tpbpv.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2628

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Program Files\csrwo\jne.exe

          Filesize

          60KB

          MD5

          889b99c52a60dd49227c5e485a016679

          SHA1

          8fa889e456aa646a4d0a4349977430ce5fa5e2d7

          SHA256

          6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

          SHA512

          08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

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

          Filesize

          212KB

          MD5

          22c0f7feaee83421119abf987cc9f3b3

          SHA1

          35b3a4d9d687c60a7ced6e888f84f377730e2123

          SHA256

          995cdefce1e9c15563136a912676861157873461f3c1336fc4a6f9c9add31e94

          SHA512

          c7ae94090b16798389149569a4668c24e3e04ad0bf425e3e0272250ccd5062bbe84ce5cb633d77ba36cf72343a8bc706c44534e3c64fc212f36cf641e5dec8ec

        • \??\c:\Program Files\csrwo\jneuq.dll

          Filesize

          148KB

          MD5

          e65470d3de5a50c32675948b724fc96f

          SHA1

          7b2dcdbebcebadf9b43c68ca67bd53a59bc054c7

          SHA256

          548f6b741b30679985bfe52cc4ab756ea311c1f9adde42d44f9eec27c0094caa

          SHA512

          79d4331db3989420b990acaf06140a95a06c91e4afa82c8bb2db1b766bc56bd2f8515888780b580b252a0774c8dc15f5b942438218a10da7f4ecf74dfffc02cb

        • memory/1708-11-0x0000000000400000-0x0000000000479D2E-memory.dmp

          Filesize

          487KB

        • memory/2628-16-0x0000000010000000-0x0000000010054000-memory.dmp

          Filesize

          336KB

        • memory/2628-14-0x0000000010000000-0x0000000010054000-memory.dmp

          Filesize

          336KB

        • memory/2628-17-0x0000000010000000-0x0000000010054000-memory.dmp

          Filesize

          336KB

        • memory/3368-0-0x0000000000400000-0x0000000000479D2E-memory.dmp

          Filesize

          487KB

        • memory/3368-2-0x0000000000400000-0x0000000000479D2E-memory.dmp

          Filesize

          487KB