Analysis

  • max time kernel
    150s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2023, 16:01

General

  • Target

    2b607447d7329e4b4cf411321d39be60.exe

  • Size

    1.7MB

  • MD5

    2b607447d7329e4b4cf411321d39be60

  • SHA1

    5e102f5055eb327d965e1ff542708f5c22993cb3

  • SHA256

    c6106ddc8029c3572223d988965baa220e14dbbe120b078a4b5a7d0546f7eb36

  • SHA512

    9640cd9eebcc85971c25a8617c73241ae37029509140bccae1ef6b9e1e74fe1e4ac0a3869c4448b7ad043ccc4b81be7060098627b0cfcadff6a6fbcef6f0e4a8

  • SSDEEP

    24576:h7WsPkA8QsBPyoG0HBrC2zJSKD5YKPmg/ptFL2De60BtKF+ho3njkoo/LZSS9e:hrEQsBT1D5YKPp/j0jN

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Adds policy Run key to start application 2 TTPs 4 IoCs
  • Modifies Installed Components in the registry 2 TTPs 5 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 6 IoCs
  • UPX packed file 27 IoCs

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

  • Modifies WinLogon 2 TTPs 2 IoCs
  • Drops file in System32 directory 7 IoCs
  • Drops file in Windows directory 8 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2b607447d7329e4b4cf411321d39be60.exe
    "C:\Users\Admin\AppData\Local\Temp\2b607447d7329e4b4cf411321d39be60.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Adds policy Run key to start application
    • Modifies Installed Components in the registry
    • Loads dropped DLL
    • Modifies WinLogon
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:2220
    • C:\Windows\SysWOW64\fservice.exe
      C:\Windows\system32\fservice.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:2836
      • C:\Windows\services.exe
        C:\Windows\services.exe -XP
        3⤵
        • Modifies WinLogon for persistence
        • Adds policy Run key to start application
        • Modifies Installed Components in the registry
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies WinLogon
        • Drops file in System32 directory
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2708
        • C:\Windows\SysWOW64\NET.exe
          NET STOP srservice
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2756
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 STOP srservice
            5⤵
              PID:2588
          • C:\Windows\SysWOW64\NET.exe
            NET STOP navapsvc
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:2760
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 STOP navapsvc
              5⤵
                PID:2876
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c C:\Users\Admin\AppData\Local\Temp\2b607447d7329e4b4cf411321d39be60.exe.bat
          2⤵
          • Deletes itself
          PID:2620

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\2b607447d7329e4b4cf411321d39be60.exe.bat

        Filesize

        133B

        MD5

        5300e7900660b56890cef6fb2a30d084

        SHA1

        343273fde8fbc94031b1d208b532d19cb7188e7a

        SHA256

        f8e986e36ebe53831268b627b4e2cd5c1a77b7b6e6384eb8a3cf90624b820e90

        SHA512

        6ab940529b9476e1b89cd5c05eb38e66a7e323409a5d0ca796ece522ba800cd90bf352d7cad2d479a4d12d5e4134ba3445c8ccd6df74748cb1538a4cf03c1e95

      • C:\Windows\SysWOW64\fservice.exe

        Filesize

        350KB

        MD5

        b4d84a8da17a6293cfe26ba3502e0f31

        SHA1

        c9c875a706fe2e747a8f70e77945a6b4c357aee3

        SHA256

        1d456a121f887752c60ff29d909eec76945b76957ba7242a552342a51f0cee5a

        SHA512

        6fe6fa84ec9c65ca68aa85eba6f955fa60449e03e755b9e907f8b5fc880647a29204f23ae4ef0b15c60bb8f768e02ec68abeac3e7b0f6bb77a9232f4fa6edd67

      • C:\Windows\SysWOW64\fservice.exe

        Filesize

        141KB

        MD5

        747fb4cef32ade993a27eb1f98a99c60

        SHA1

        86192c25cf12c5c5597d2af37a8bb8fdc7ef1bc1

        SHA256

        af3e8ad07df783dba7bb00caa143bfa9f32fa8a384230a0a2ea59ee1a1de7253

        SHA512

        7201019302e4fe95abb1d8349b1600345d0570122dc2c84214b923fb4708e5ee37771893753a1d4a1917f7f38cbe77d01bd0b2512f27d7a41515d776cf31c955

      • C:\Windows\SysWOW64\fservice.exe

        Filesize

        423KB

        MD5

        802f6bc8f8f528a6403a7d692889f7a6

        SHA1

        b65b1822df80359756bf4be42b1653ef02dfeed0

        SHA256

        bf851d9d112bffc6226dcf75580aaee6c669c4a906bc7383fca354ed54a5e8b2

        SHA512

        4cf1dc33f2291e9abe53bb52522b545b75555c27ad7250856f9a8aeba07a62019f1d4dc860a88f486a0834960ba8d92e4476c98b37665b8d399ad74bb967fd46

      • C:\Windows\services.exe

        Filesize

        142KB

        MD5

        ae9eabdeab506afaf6c5c1f4b3316199

        SHA1

        97f8bdc612aec200998f91a1f9c0253c08848f55

        SHA256

        785efc08ed43b6e9063f682299a5e569491759353cd7062a5b8ef304845cc2b9

        SHA512

        645c3f4ba1fa72ed7ad809eeaf47c36c2fda5d51d596f6668803a76b9492a3a9a48d60143f4e482836e072efe27b57bf9cf76b3dab356ab715bf92aae6c6f1de

      • C:\Windows\services.exe

        Filesize

        365KB

        MD5

        fc503394fec9a823f86cd4056830a02f

        SHA1

        5efe21ac10961fc43dc814110900fe31f3044fe3

        SHA256

        3290eb33d0ee5026283006552700f0a9645e601f7d5095ef79c002e71d1c2bac

        SHA512

        53b091b4c7e6e6e4e3f88bc5e0365fe4c2f61540aab2f74e08cde795e8cc17085833b2ab3092b70d4e7468a98470090c14c9b5eb59aac81505d9a432dc54fe34

      • C:\Windows\system\sservice.exe

        Filesize

        155KB

        MD5

        4585d7a754682a7c7cc2d87354af55d7

        SHA1

        a5279d2b253dc286d1cbb2718a4698b96158f7f5

        SHA256

        8c7d3d572369a9604f3c861d50d9467c10c170acd54c35197bea1484658ed119

        SHA512

        a4c3a5f159d68ac29b661ff51953ef0d0825acada0a8799be14a8ca8cf306cd7031bbbf7479a1f05968a4d989ec17f3fcdba9b06adcd0a7652938bd6109746d0

      • \Windows\SysWOW64\fservice.exe

        Filesize

        471KB

        MD5

        3e6905ceb9e13e9b71c792799a84b0d5

        SHA1

        a4b7e7589aa16da77f9684aa70e6dce6ffb27602

        SHA256

        e0b41a30fef87bba93ce07c04dd9461e38ef4feacb3958117dbc39e965e79bb9

        SHA512

        2b708ea2373dcd6ac0b019dd81e9d0ff20fc8ac3ae222dcf041554a66c6612ca539fda35fb3613394b3ed6630632c72b7a6b7b70225ceccd4b59fcbc840b13e8

      • \Windows\SysWOW64\fservice.exe

        Filesize

        326KB

        MD5

        a4825c7c36480ddf97d3b2ed1d608ab6

        SHA1

        3dfe89d1daa2f668be5a6fc11224d5e5b71e42c2

        SHA256

        7739ad2a3cbdea12abf9c617fd0f9063191fd2d8c8d3ea0d0278844f1998e7d4

        SHA512

        05b56ab0e19b413ddafce414c90be89acf64fe038316f93a1c30bfcad684cd73ace7647caa22439a8d893da51c95c4e008d69d8004e2d4e2392faa253c1f9b16

      • \Windows\SysWOW64\reginv.dll

        Filesize

        36KB

        MD5

        d4a3f90e159ffbcbc4f9740de4b7f171

        SHA1

        0542f5d1e2c23dca8d90766b3a8537dc3880e5c9

        SHA256

        2200dd5f83d2fb8c5d3994206a4fa9ff34b4cbfe56ed39a9a03c954cf45d8f77

        SHA512

        5493beb50b5f7d8ec52f32718d01696916ae173456005d0c1294ce695161ce5004aff58ee3892bf5db0f9b23720146a6d3ae8ffbcbbd81f84d894fdc8cf75a94

      • \Windows\SysWOW64\winkey.dll

        Filesize

        24KB

        MD5

        43e7d9b875c921ba6be38d45540fb9dd

        SHA1

        f22a73fc0d4aa3ea6c0b8f61d974b028f308acc4

        SHA256

        f1b2b0abe844e6ba812c7f8709a463a7f6c56fa6ac38d376a0739cc3469f795b

        SHA512

        2e74e23c0875b69b82319391c392132f28f4eb45aa412805130382498ae48969a06a2b3a7528b626fa7d7ddb6b006f19f0ef8d73cf73cb9a0c0df44a21077622

      • memory/2220-7-0x0000000003110000-0x000000000330F000-memory.dmp

        Filesize

        2.0MB

      • memory/2220-1-0x00000000003C0000-0x00000000003C1000-memory.dmp

        Filesize

        4KB

      • memory/2220-14-0x0000000003110000-0x000000000330F000-memory.dmp

        Filesize

        2.0MB

      • memory/2220-47-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2220-0-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2708-50-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2708-58-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2708-65-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2708-31-0x00000000001D0000-0x00000000001D1000-memory.dmp

        Filesize

        4KB

      • memory/2708-64-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2708-63-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2708-62-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2708-51-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2708-52-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2708-53-0x00000000001D0000-0x00000000001D1000-memory.dmp

        Filesize

        4KB

      • memory/2708-54-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2708-55-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2708-56-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2708-29-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2708-59-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2708-61-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2836-18-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2836-39-0x0000000000400000-0x00000000005FF000-memory.dmp

        Filesize

        2.0MB

      • memory/2836-15-0x00000000002D0000-0x00000000002D1000-memory.dmp

        Filesize

        4KB

      • memory/2836-30-0x0000000003070000-0x000000000326F000-memory.dmp

        Filesize

        2.0MB