Analysis

  • max time kernel
    150s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    13/06/2024, 02:42

General

  • Target

    b81a7dba533651bdd9164ddc8b0a9168c5bd4c4e17995b0c94832c2d19879142.exe

  • Size

    96KB

  • MD5

    9fbea232a764499d46084b22629f2dd9

  • SHA1

    7451003f3d62beee43193b6822dc8eeefc4f9e72

  • SHA256

    b81a7dba533651bdd9164ddc8b0a9168c5bd4c4e17995b0c94832c2d19879142

  • SHA512

    669575d4e135b2519cceeaf00a25878ecc54f8972c90fc65301f929e8220b7fffd2d6c0869f7d9a2bfef3f31040767a6a16c028bf833bc22419321824ef2ed3d

  • SSDEEP

    3072:BftffjmNrcc26D7nt0lv8ecxrNDcyplEmns/5jA4ZE1F:JVfjmNgc29irNDcyplEmKpRaH

Score
7/10

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1216
      • C:\Users\Admin\AppData\Local\Temp\b81a7dba533651bdd9164ddc8b0a9168c5bd4c4e17995b0c94832c2d19879142.exe
        "C:\Users\Admin\AppData\Local\Temp\b81a7dba533651bdd9164ddc8b0a9168c5bd4c4e17995b0c94832c2d19879142.exe"
        2⤵
        • Drops file in Windows directory
        • Suspicious use of WriteProcessMemory
        PID:2984
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c C:\Users\Admin\AppData\Local\Temp\$$a32F2.bat
          3⤵
          • Deletes itself
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:2216
          • C:\Users\Admin\AppData\Local\Temp\b81a7dba533651bdd9164ddc8b0a9168c5bd4c4e17995b0c94832c2d19879142.exe
            "C:\Users\Admin\AppData\Local\Temp\b81a7dba533651bdd9164ddc8b0a9168c5bd4c4e17995b0c94832c2d19879142.exe"
            4⤵
            • Executes dropped EXE
            PID:2692
        • C:\Windows\Logo1_.exe
          C:\Windows\Logo1_.exe
          3⤵
          • Executes dropped EXE
          • Enumerates connected drives
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2460
          • C:\Windows\SysWOW64\net.exe
            net stop "Kingsoft AntiVirus Service"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:2628
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
              5⤵
                PID:2752

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateCore.exe

        Filesize

        251KB

        MD5

        a33a8079a96b84fb107ee4603ea5a431

        SHA1

        4d57eace6522d58ce571c31103ce1335cac7a334

        SHA256

        3ca9dbf486bbdef38ddf2102a532563ab20f4d767c5e6228f39e606e626e76d8

        SHA512

        29ec766ea39de2e24661a6444590fcd3421dfaf8e2f9edc6b7420331b455e9726759add01d9f53862341b7563042f089c64703edfcc38afa5f26e1e4bb64709b

      • C:\ProgramData\Package Cache\{ca67548a-5ebe-413a-b50c-4b9ceb6d66c6}\vcredist_x64.exe

        Filesize

        471KB

        MD5

        4cfdb20b04aa239d6f9e83084d5d0a77

        SHA1

        f22863e04cc1fd4435f785993ede165bd8245ac6

        SHA256

        30ed17ca6ae530e8bf002bcef6048f94dba4b3b10252308147031f5c86ace1b9

        SHA512

        35b4c2f68a7caa45f2bb14b168947e06831f358e191478a6659b49f30ca6f538dc910fe6067448d5d8af4cb8558825d70f94d4bd67709aee414b2be37d49be86

      • C:\Users\Admin\AppData\Local\Temp\$$a32F2.bat

        Filesize

        722B

        MD5

        3acad97b9f458b505c478afe90ee7a6d

        SHA1

        7315927d925424599c26d51080d8a3aeda4fc532

        SHA256

        9868b35fed66fb625c3494ae34ef65353bb0353495024bc6fa03933b4bea995a

        SHA512

        3492e07ddc7bf38d51173de4e02c0937352b291f5bfcb1098e7472ba600c551cf9ba6f47530b450cdb766ea1f1814456ddbfe229aa0fbaa0cd115002f7d7c616

      • C:\Users\Admin\AppData\Local\Temp\b81a7dba533651bdd9164ddc8b0a9168c5bd4c4e17995b0c94832c2d19879142.exe.exe

        Filesize

        69KB

        MD5

        b74d8eadf894a17d2d9280d2aba9e718

        SHA1

        03ee3be120a52750e0858f837440858d2af5534b

        SHA256

        a32980008050dec43ec7e5610b8edea436d8b750b42b0e2112b2275af610c63b

        SHA512

        319b11cdc1952842f48df4e8d2dec0fe54f08a41cc7a2d249d64a00ea989047ec12281e78cdb7c1bbd6c406b6d107e36a9cca02621d068808dec94d2d707c693

      • C:\Windows\Logo1_.exe

        Filesize

        26KB

        MD5

        2fa7d646424dcabdc763a482ed72338a

        SHA1

        2917f669560129d017d689b255ff05b848a6fcd0

        SHA256

        b6e3f8544ab9ccaaf1cb6cc51639b7173edb46f7fc186b908d8bcd50b731da69

        SHA512

        02230628e90c8ae3397fa1c1908c9d4d27c112c7986ab6630608ce16054b1731bb06f3a129657c25a32214bd2451fe36b3f0e649073f5b8b6c86dca42d4b317b

      • F:\$RECYCLE.BIN\S-1-5-21-3691908287-3775019229-3534252667-1000\_desktop.ini

        Filesize

        9B

        MD5

        4f2460b507685f7d7bfe6393f335f1c9

        SHA1

        378d42f114b1515872e58de6662373af31ab8c7b

        SHA256

        47a22297ce31d17b0f37251ce63cf2eb146700451caab6dd0aa710d2526c8e42

        SHA512

        75dcca6b81ac47511b847a5c35be4bddbee425436f7bfd1347115e18b84f52a16a5c517bda0a5f5d0a1f2541aab80d764932d8018538cb112fa3b6c9977e95eb

      • memory/1216-29-0x0000000002D80000-0x0000000002D81000-memory.dmp

        Filesize

        4KB

      • memory/2460-1874-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2460-31-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2460-38-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2460-45-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2460-91-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2460-97-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2460-634-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2460-1997-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2460-3334-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2984-39-0x0000000000440000-0x0000000000474000-memory.dmp

        Filesize

        208KB

      • memory/2984-0-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2984-17-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2984-16-0x0000000000440000-0x0000000000474000-memory.dmp

        Filesize

        208KB