Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    20/05/2024, 15:18

General

  • Target

    b5d35117240f2342dec45eee36d06bb7bc5b434c8c98085d83f11be2ac0ed5b0.exe

  • Size

    4.8MB

  • MD5

    35d215e36f7b7b09f1a60e1b45fab112

  • SHA1

    5d4a9ed9994f512b8bd5e308ceff5aec60ba6bcd

  • SHA256

    b5d35117240f2342dec45eee36d06bb7bc5b434c8c98085d83f11be2ac0ed5b0

  • SHA512

    2596e6f3b104a83d810e4a3332f5d6d43cc58d92ba80c877b0fc82aa094813bb23eff6527b59517c99499045d08ff9f4a0c70046f81fc8c7e1d8fe034fee252a

  • SSDEEP

    98304:OX3oVSsYFZ2xtp/BZXxkIpPG1f5e8M/Cw/khc5FbKEQ26PVR7m6gZ1MRGNCyI5AB:IF2lBZBkIOhe8M/Cw/khc5FbKEV6PVRa

Score
8/10

Malware Config

Signatures

  • Modifies Installed Components in the registry 2 TTPs 12 IoCs
  • Executes dropped EXE 10 IoCs
  • Loads dropped DLL 31 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 Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 14 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b5d35117240f2342dec45eee36d06bb7bc5b434c8c98085d83f11be2ac0ed5b0.exe
    "C:\Users\Admin\AppData\Local\Temp\b5d35117240f2342dec45eee36d06bb7bc5b434c8c98085d83f11be2ac0ed5b0.exe"
    1⤵
    • Loads dropped DLL
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of WriteProcessMemory
    PID:1520
    • C:\Users\Admin\AppData\Local\Temp\{2253E632-7F52-481a-92B2-1EEB0E5330AA}-TemporaryCache\KB931125.exe
      "C:\Users\Admin\AppData\Local\Temp\{2253E632-7F52-481a-92B2-1EEB0E5330AA}-TemporaryCache\KB931125.exe"
      2⤵
      • Modifies Installed Components in the registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2628
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe authroots.sst
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies system certificate store
        PID:2440
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe updroots.sst
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies system certificate store
        PID:2420
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe -l roots.sst
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:2488
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe -d delroots.sst
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:2872
    • C:\Users\Admin\AppData\Local\Temp\{48E05E28-B261-4ddc-89D4-EDB40133D96C}-TemporaryCache\KB931125.exe
      "C:\Users\Admin\AppData\Local\Temp\{48E05E28-B261-4ddc-89D4-EDB40133D96C}-TemporaryCache\KB931125.exe"
      2⤵
      • Modifies Installed Components in the registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2744
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe authroots.sst
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies system certificate store
        PID:1776
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe updroots.sst
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies system certificate store
        PID:1760
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe -l roots.sst
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies system certificate store
        PID:380
      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe -d delroots.sst
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:2352

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\W95INF16.DLL

          Filesize

          2KB

          MD5

          7210d5407a2d2f52e851604666403024

          SHA1

          242fde2a7c6a3eff245f06813a2e1bdcaa9f16d9

          SHA256

          337d2fb5252fc532b7bf67476b5979d158ca2ac589e49c6810e2e1afebe296af

          SHA512

          1755a26fa018429aea00ebcc786bb41b0d6c4d26d56cd3b88d886b0c0773d863094797334e72d770635ed29b98d4c8c7f0ec717a23a22adef705a1ccf46b3f68

        • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\W95INF32.DLL

          Filesize

          4KB

          MD5

          88d01717dc4f1119ea925ff0217c5f49

          SHA1

          7da9c2e12283800f9896c1f15f789539529e00ec

          SHA256

          c6407f5792a945bf0948de191e6c54c4fbd2abcc0af3994140fb4319f685dbbd

          SHA512

          39ecd9d2bb8b4edf88b8882640ec49c061fa34496c026ad19adf4bc4462de3949c72ad00bcc2ca27d53596221c026e978f875bb6cf7e0e8c2d884c1d37a83781

        • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\authroots.sst

          Filesize

          73KB

          MD5

          bb49ccc10926cdb601eba81afef749a2

          SHA1

          a4766c9aea8d211e9632148fd4b625cece195be9

          SHA256

          f013ee3b7fede9a95844e83e83ee298d38cba6efce5a5cafcd8b95255c32f86c

          SHA512

          94c2809727039d1ed07a3742a4b2f9300e865ea7c49bc1fcf547a30238eeecc88d8dd06a2d4f3112317f948908b9af082b50f412a41a2bcb48d5e30d6d8ecbba

        • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\delroots.sst

          Filesize

          9KB

          MD5

          7b32871e409608ff887b6cf4d87debb0

          SHA1

          191f9ea1298ee52dbd6f977b3584109a064f57b9

          SHA256

          3f01268547364d2d60a0f65b46757cccfd9225fc39d581846a8fbffdb5756ff2

          SHA512

          534a384f7946db4083e639b8e02d83ac97293c60630b8811a84c85e0330e9c293f05f5cf71e0f3580551e7923bc5a3bfb7f0406432ca3cdb7efeb4a950ac5e8a

        • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\roots.sst

          Filesize

          7KB

          MD5

          9e5de0fd1f90486a66dee4bfe89a78d7

          SHA1

          90e3188ef63495aaa71c85d4ff0f23253c834b40

          SHA256

          8b95ff56d61586582864d05563762615c8705779578dca3c98a303c3b1f4122e

          SHA512

          60006fa6f57e4d280642d51055f85f8d27b913ce71373de5b928c515c77647295030ab73ab4a55024de4a40c18f200909f49ffb52c26cf554835fc3d4cc348f1

        • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\rootsupd.inf

          Filesize

          1KB

          MD5

          421e60325404f5f29ac04c9b9d59096b

          SHA1

          aace2fd74d799e8af5c8d5b2646361bb67a1620c

          SHA256

          571a8da5298aacc37700c747ee5d72b5a7797835140e7a4d4f895e9604574d77

          SHA512

          86693975b1b187ee65b0a23b1f3f8e05d1a3f61e7e47b060f938fe1602bbad96021847b709e64c2d5a295b72f10f4db587a11a1e7ca0a0b64c3bed7fa683b1d2

        • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.sst

          Filesize

          320KB

          MD5

          2d9b4498c847715418160bfd7e7c8a2d

          SHA1

          e0873091d476d2566aa6fc988cb364247c95dc97

          SHA256

          c49c05b701c390c679e5e3226ec621f22a08155b1065fcfc37b509f648f03b41

          SHA512

          dcf3208cdd1e4353f82823f796d735c1209f149f183eea827a90753ec55509a1c460a16c120e07c12a5eacf0e67d2661c25638491ecf4403e25d6508983e519b

        • \Users\Admin\AppData\Local\Temp\IXP000.TMP\ADVPACK.DLL

          Filesize

          89KB

          MD5

          a64e4b204d44548eeb5c3d86eca2ad70

          SHA1

          e3245bf6dbb2e56d71a9cbad2697aa4fa0df6bbe

          SHA256

          985a5603ebf94539ac11549999f83b5e6dc008180994898c5daa6fd31ae1e9dc

          SHA512

          dca4099318954bab5f1204645be0d0e8fea0c2e97ee95496fa884fbed627e376358623fa94c39bf0abe97d07d46a7e6c5e1081496cdd1987e07e595995a46cd5

        • \Users\Admin\AppData\Local\Temp\IXP000.TMP\updroots.exe

          Filesize

          5KB

          MD5

          9c18ae971cbffb096952177f6804ea31

          SHA1

          bb255dd1bd9bb39cdbb8671af66054432c686828

          SHA256

          2703c25453b09c40ee81fdc458b8cc24712e387a12d15ff94e12b02921fe98cb

          SHA512

          21086509bb4ea5afede55d034955de0bdf8b366d5d8d4bfa7a6c68b0f35fbf217ff3e932f87fc1d37f09022805e79ceeecbaf3dbccbd96d7c93029ffe7370e4c

        • \Users\Admin\AppData\Local\Temp\{2253E632-7F52-481a-92B2-1EEB0E5330AA}-TemporaryCache\KB931125.exe

          Filesize

          349KB

          MD5

          4a4d72d34f9da1fc5019e0748fcde2f5

          SHA1

          f54752ec63369522f37e545325519ee434cdf439

          SHA256

          83b660f3f3eaddd4b388ed3f806f7444f03429fb63fc1f8db3d86294914a05ca

          SHA512

          95986ffbf51483a0d1a256028847c7ee6ac73ffd62f6d838309a69e1833f719a7cfed5422815f4d4a49dbd599c449f8db8f60273136720cb1da5f8b0eb24cb33

        • \Users\Admin\AppData\Local\Temp\{FA3C94A0-85D2-4261-A140-8CA65CAF25F7}-TemporaryCache\7z.dll

          Filesize

          1.1MB

          MD5

          f0fef6362d4886e85a186a5e3766650a

          SHA1

          65843b7052a4d1b84762479d79445c46834e18b5

          SHA256

          15b9fe7d408cbf2204039087526e7df947df57b42ea479e303b682e956638816

          SHA512

          3f6dfd701cf62b77219f8825a2257c4bd7d44ebafc5654b06abaf906ced2571f4eeb04fe22ae6136c14bddebddb12555aa6efd322e779443d57bb122ea786043