Analysis

  • max time kernel
    150s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    07/05/2024, 08:41

General

  • Target

    106458aa333a28ab327b65eb36ffc6a0_NEAS.exe

  • Size

    3.8MB

  • MD5

    106458aa333a28ab327b65eb36ffc6a0

  • SHA1

    c1faa7712fb46fc6bcdb0b94cf1d3876d9fa0618

  • SHA256

    5d24ca80652b9a954e917fd6dd0413421baff5c7b8a60ab0ac084818faea67bf

  • SHA512

    be334d4fc806b036ce1d5cbca8b4c39c2b252352316698f45db0ebc2255d6f6c38a486009a13051a269f42fedd3bbb450344867fbb68bb2aafb38d63dc1f89f2

  • SSDEEP

    49152:tCQyB2zaAtGvugaRnBdUvVQqCdUmVfoIn8ulITuqk1eCuDHwb0X3nNVR:MbAzgaxcVImuak1WHQSdVR

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

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

  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 6 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • 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 System32 directory 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 5 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Creates scheduled task(s) 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\106458aa333a28ab327b65eb36ffc6a0_NEAS.exe
    "C:\Users\Admin\AppData\Local\Temp\106458aa333a28ab327b65eb36ffc6a0_NEAS.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1964
    • \??\c:\users\admin\appdata\local\temp\106458aa333a28ab327b65eb36ffc6a0_neas.exe 
      c:\users\admin\appdata\local\temp\106458aa333a28ab327b65eb36ffc6a0_neas.exe 
      2⤵
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Writes to the Master Boot Record (MBR)
      • Drops file in Program Files directory
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies system certificate store
      PID:2044
    • C:\Windows\Resources\Themes\icsys.icn.exe
      C:\Windows\Resources\Themes\icsys.icn.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3000
      • \??\c:\windows\resources\themes\explorer.exe
        c:\windows\resources\themes\explorer.exe
        3⤵
        • Modifies visiblity of hidden/system files in Explorer
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Drops file in System32 directory
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2612
        • \??\c:\windows\resources\spoolsv.exe
          c:\windows\resources\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in Windows directory
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2492
          • \??\c:\windows\resources\svchost.exe
            c:\windows\resources\svchost.exe
            5⤵
            • Modifies visiblity of hidden/system files in Explorer
            • Executes dropped EXE
            • Loads dropped DLL
            • Adds Run key to start application
            • Drops file in System32 directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2092
            • \??\c:\windows\resources\spoolsv.exe
              c:\windows\resources\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:2776
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 08:43 /f
              6⤵
              • Creates scheduled task(s)
              PID:2944
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 08:44 /f
              6⤵
              • Creates scheduled task(s)
              PID:784
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 08:45 /f
              6⤵
              • Creates scheduled task(s)
              PID:1540
        • C:\Windows\Explorer.exe
          C:\Windows\Explorer.exe
          4⤵
            PID:2940

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\Cab204F.tmp

            Filesize

            65KB

            MD5

            ac05d27423a85adc1622c714f2cb6184

            SHA1

            b0fe2b1abddb97837ea0195be70ab2ff14d43198

            SHA256

            c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

            SHA512

            6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

          • C:\Users\Admin\AppData\Local\Temp\Tar20A0.tmp

            Filesize

            171KB

            MD5

            9c0c641c06238516f27941aa1166d427

            SHA1

            64cd549fb8cf014fcd9312aa7a5b023847b6c977

            SHA256

            4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

            SHA512

            936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

          • C:\Windows\Resources\Themes\explorer.exe

            Filesize

            135KB

            MD5

            913394cd26de1cdc2a5b8a4a9e648b5e

            SHA1

            8b667e28182b8415ecf7efa7bdda241e9956dfc3

            SHA256

            c2b9f7252893da29566a03339acd5c563f729fe845c67fa09b1844a987776d23

            SHA512

            4f1aa420af1bfd112d6ee2c81431d2fb13195c1bfe7b3b0e71171a1458d4f56d954b308e68097485dd92584999aa72ea8efab3c04f17fa321030c4f2d67aa756

          • \Users\Admin\AppData\Local\Temp\106458aa333a28ab327b65eb36ffc6a0_neas.exe 

            Filesize

            3.7MB

            MD5

            e23164ad69da0120959905d089365fed

            SHA1

            99cbe30e0aa84e43b693ffa55d994567aaba74de

            SHA256

            40dacc4c8fbbc81128302078c95da93b7854060eec5412aeebf0ec7d51794515

            SHA512

            9b10c7a16dfb9f384241cf338fbeba25648d0e5553f5d305120ef152bb32389962fe0bb257ad25deb0c61d5a95d5ad9a9de8de021e42f40aa2bb673785b2181e

          • \Windows\Resources\Themes\icsys.icn.exe

            Filesize

            135KB

            MD5

            4aa47bce7a2899bfbbbf3ef14d237588

            SHA1

            4cb2b4972e9d6589e49db782f11597e60ff44706

            SHA256

            f190739c52960909dba303bb9773e63686b907caf28e4eaa67af8ade0071de12

            SHA512

            aea2d3ea94698e0d88be1d72e28113d217142fdd8f13a55afa438e8b531d89d87c90c9fc4be6565736da95e69ee21ec703abd88d4d9e60e53bcde8545c8e237f

          • \Windows\Resources\spoolsv.exe

            Filesize

            135KB

            MD5

            8d6c9b9b6ed44b4805c25c8c22e695f2

            SHA1

            66e82826a76e35484fd83cdfd76435e6cd11d5ba

            SHA256

            bf2399483f80802bad82e836d3797f338e120eaea78c967d2b8ee45795918969

            SHA512

            660f6cfdec06ea763d777cdaa3721e7b3c30d248f3333eb2f8fa78495820368683d5ca4ec65088431e3bc5f242578cb9250490aa836ebae2ae587c30216d7241

          • \Windows\Resources\svchost.exe

            Filesize

            135KB

            MD5

            4e36d81cded267aa991ed67e514ebad0

            SHA1

            920890d61783f9fc27bc047b97b2925e511ef80b

            SHA256

            013740ce9721cbc646373b104c4025d4d4bd235ba7b782181d287ff69c65008b

            SHA512

            d54b8503893292b86f4f95ac0d188e672017dced6a204154305a9b7ce2a96c1e41419da11fe70776c23a8529428023ea9ae5a4953f7f8a9dbf8f051c3ed05f77

          • memory/1964-0-0x0000000000400000-0x000000000041F000-memory.dmp

            Filesize

            124KB

          • memory/1964-14-0x0000000000290000-0x00000000002AF000-memory.dmp

            Filesize

            124KB

          • memory/1964-83-0x0000000000400000-0x000000000041F000-memory.dmp

            Filesize

            124KB

          • memory/2092-77-0x0000000000370000-0x000000000038F000-memory.dmp

            Filesize

            124KB

          • memory/2092-72-0x0000000000400000-0x000000000041F000-memory.dmp

            Filesize

            124KB

          • memory/2492-67-0x0000000000320000-0x000000000033F000-memory.dmp

            Filesize

            124KB

          • memory/2492-82-0x0000000000400000-0x000000000041F000-memory.dmp

            Filesize

            124KB

          • memory/2612-58-0x0000000000570000-0x000000000058F000-memory.dmp

            Filesize

            124KB

          • memory/2776-81-0x0000000000400000-0x000000000041F000-memory.dmp

            Filesize

            124KB

          • memory/3000-84-0x0000000000400000-0x000000000041F000-memory.dmp

            Filesize

            124KB