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Analysis

  • max time kernel
    150s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    07/03/2024, 16:13

General

  • Target

    31d3d7d119de686232e9d19128b2ff3d67e2259b131c11525b22787b197db9dc.exe

  • Size

    381KB

  • MD5

    c4c8cb796091adbbae269b05094e7332

  • SHA1

    7cbbc98f889ade6945bc46fcf904999e66c8f308

  • SHA256

    31d3d7d119de686232e9d19128b2ff3d67e2259b131c11525b22787b197db9dc

  • SHA512

    1ffcaa3cef4bde4734dc1ff454bbba78e07989e07f9a699dffc694f89d819632c736fd082212cf855813e0b0342e524494e581076fcbcd4b1182140c696605c7

  • SSDEEP

    6144:MVfjmN+6x0Joevr9BIfamYnwA92lGh5qyM4mF5sAOj/dxCzHa3NrJQe:O7++A02evr/IfamWkCM4OSdxma3Nrj

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:1148
      • C:\Users\Admin\AppData\Local\Temp\31d3d7d119de686232e9d19128b2ff3d67e2259b131c11525b22787b197db9dc.exe
        "C:\Users\Admin\AppData\Local\Temp\31d3d7d119de686232e9d19128b2ff3d67e2259b131c11525b22787b197db9dc.exe"
        2⤵
        • Drops file in Windows directory
        • Suspicious use of WriteProcessMemory
        PID:2276
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c C:\Users\Admin\AppData\Local\Temp\$$aC60.bat
          3⤵
          • Deletes itself
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:2472
          • C:\Users\Admin\AppData\Local\Temp\31d3d7d119de686232e9d19128b2ff3d67e2259b131c11525b22787b197db9dc.exe
            "C:\Users\Admin\AppData\Local\Temp\31d3d7d119de686232e9d19128b2ff3d67e2259b131c11525b22787b197db9dc.exe"
            4⤵
            • Executes dropped EXE
            PID:2640
        • 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:2980
          • C:\Windows\SysWOW64\net.exe
            net stop "Kingsoft AntiVirus Service"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:2572
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
              5⤵
                PID:2632

      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

        717bbf070b0486e85b4c31139c219c7e

        SHA1

        0e361c843f2a2586f6b80fcec5363f478ef9b251

        SHA256

        25b83b39261bb702ed450e78d6d76c653cc1f6c12d70065be96a83df057a7156

        SHA512

        2926f4012914e741b8653e3f9e2c7c4d2162b04ac97479709bd6126c5587755f8b71bb5b8d0df85580557c1aed475c5f4acf365c2f5e0026b4f448ecbd473c39

      • 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\$$aC60.bat

        Filesize

        721B

        MD5

        6f53a954b08832e44fbd853c1cd2b40c

        SHA1

        004e447ad78ffbdd8b93717d8b2940d8af45a993

        SHA256

        fc4335cbeffc237cd233ad61575c166c2083d0fbe71a272ebc9c777cd6a52234

        SHA512

        a161acf2ba485fbe64c9c756456b37011532125b8678ef25f97da66e7b3e77a19d7b5109ba78fa8f77d53a5f24919fd06232ca637347c5ef504214d3e6006f29

      • C:\Users\Admin\AppData\Local\Temp\31d3d7d119de686232e9d19128b2ff3d67e2259b131c11525b22787b197db9dc.exe.exe

        Filesize

        354KB

        MD5

        e552401ea07d0e12ca80e294a78819cd

        SHA1

        36d05c8c18cc9c073d6488a4cf63ba7be8e61c55

        SHA256

        d8dfc83a5cf4d0567437ba971e3b712631c85666767c900f62695abca447f728

        SHA512

        c75b4cda661b14e79dd20add36bbf8584b6bbc4e9068f7d613765bf5d633c50d18d71a1954be896b4244de17c784335b0241dcc368bd00877dc86d7eed8548d2

      • C:\Windows\rundl132.exe

        Filesize

        26KB

        MD5

        bbe25ec5fb983e881cda55b0a827d9b9

        SHA1

        448be06c535598b29e10e7feec613612f0030121

        SHA256

        0b9164da17c3f89558fac9e2a2f5362619ea58990822d6171ffa43eb8b579c7a

        SHA512

        1fea6f1ee33645476fbf8e7cbf21dfb06b113aea208f238fa274f43d7a54af87a6966b0bed9ea10543613732656fec5535ac4e973d724d99f6016a47410757ef

      • F:\$RECYCLE.BIN\S-1-5-21-2297530677-1229052932-2803917579-1000\_desktop.ini

        Filesize

        8B

        MD5

        eb3fe7085aac4986a5db69d6c382011f

        SHA1

        19c0d93bf576dc3bcf232628428d6218f91767a0

        SHA256

        41f6ad8112406e684ecf32a535c20fbac2db8d577e00b14197146b599a4b6ab2

        SHA512

        26ed6484407c76b27987c2ed0e5ec2522ea6053de299c486841195690c536d72d0569fb291a9b9a91ce74fa22f4c37c43b491f4d0ff00afb8771bd36a7dcf508

      • memory/1148-29-0x0000000002580000-0x0000000002581000-memory.dmp

        Filesize

        4KB

      • memory/2276-0-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2276-16-0x0000000001BA0000-0x0000000001BD4000-memory.dmp

        Filesize

        208KB

      • memory/2276-15-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2980-38-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2980-44-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2980-90-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2980-96-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2980-761-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2980-1849-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2980-31-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2980-2436-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2980-3309-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB

      • memory/2980-21-0x0000000000400000-0x0000000000434000-memory.dmp

        Filesize

        208KB