Analysis

  • max time kernel
    140s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-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 7 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 16 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:2380
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\uzxqm.exe "C:\Users\Admin\AppData\Local\Temp\4bd87d24066d91830ef74d3aa71a2630_NEAS.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1076
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:2224
      • C:\Users\Admin\AppData\Local\Temp\uzxqm.exe
        C:\Users\Admin\AppData\Local\Temp\\uzxqm.exe "C:\Users\Admin\AppData\Local\Temp\4bd87d24066d91830ef74d3aa71a2630_NEAS.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1420
        • \??\c:\Program Files\vrzoz\fkehdnsin.exe
          "c:\Program Files\vrzoz\fkehdnsin.exe" "c:\Program Files\vrzoz\fkehdnsin.dll",Group C:\Users\Admin\AppData\Local\Temp\uzxqm.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:2808

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • \??\c:\Program Files\vrzoz\fkehdnsin.dll

          Filesize

          148KB

          MD5

          78442b2f1caa189413fe121e674827d3

          SHA1

          377fc5d32a26a91565c1330d30401713e8f63333

          SHA256

          6c5698b39d2f1b007edef73bf73d33e01cf1aa5662ad99eaaca3b7b698a5a70c

          SHA512

          b7840d0a757b585ce7dfd99f2f87cb43617b1dbf11315788c98429e0ee5520ed16a6edf2265261efae16e9c3416f553ded65ccd13605fb72a89e180c9fb07ded

        • \Program Files\vrzoz\fkehdnsin.exe

          Filesize

          43KB

          MD5

          51138beea3e2c21ec44d0932c71762a8

          SHA1

          8939cf35447b22dd2c6e6f443446acc1bf986d58

          SHA256

          5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

          SHA512

          794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

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

          Filesize

          211KB

          MD5

          8a871167515f7dc340c459381f069f45

          SHA1

          86e840873aba1c14f61685e8601250dcf094cd53

          SHA256

          40ee1bf75cb81e7cd2964369b29b01dee2293ea3c8b892258411c1a1ffbfea6f

          SHA512

          7e63719fdff4643f32cea4ffd2b71de49be82871ef96d76bcd6c53ba997272399076292ef7ed6dd4af28a8fd68e1ce22b92ab9c34c75f1f9bf3d469500bd5b75

        • memory/1076-7-0x0000000000190000-0x000000000020A000-memory.dmp

          Filesize

          488KB

        • memory/1420-15-0x0000000000400000-0x0000000000479D2E-memory.dmp

          Filesize

          487KB

        • memory/1420-8-0x0000000000400000-0x0000000000479D2E-memory.dmp

          Filesize

          487KB

        • memory/2380-0-0x0000000000400000-0x0000000000479D2E-memory.dmp

          Filesize

          487KB

        • memory/2380-2-0x0000000000400000-0x0000000000479D2E-memory.dmp

          Filesize

          487KB

        • memory/2808-21-0x0000000010000000-0x0000000010054000-memory.dmp

          Filesize

          336KB

        • memory/2808-22-0x0000000010000000-0x0000000010054000-memory.dmp

          Filesize

          336KB

        • memory/2808-24-0x0000000010000000-0x0000000010054000-memory.dmp

          Filesize

          336KB

        • memory/2808-25-0x0000000010000000-0x0000000010054000-memory.dmp

          Filesize

          336KB

        • memory/2808-26-0x0000000010000000-0x0000000010054000-memory.dmp

          Filesize

          336KB

        • memory/2808-28-0x0000000010000000-0x0000000010054000-memory.dmp

          Filesize

          336KB