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Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/04/2024, 00:33

General

  • Target

    92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe

  • Size

    147KB

  • MD5

    56d2523afd8158dc25ad1f8cf6a4247f

  • SHA1

    3a23101dfa485cacfe9b3507bebca127b5ded85f

  • SHA256

    92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8

  • SHA512

    2b0cc5e739abc64368e039e45b77cab411991ff5b2895e3e5f2b87ed056b306a143f077a5ec29f9b76623b21733ad4a1d8b13e5c6dfd883ae65bc43d9caaa088

  • SSDEEP

    3072:LOjWuyt0ZsqsXOKofHfHTXQLzgvnzHPowYbvrjD/L7QPbg/Dr0T3rnXLHf7zjPP1:LIs9OKofHfHTXQLzgvnzHPowYbvrjD/C

Score
9/10

Malware Config

Signatures

  • UPX dump on OEP (original entry point) 11 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Maps connected drives based on registry 3 TTPs 6 IoCs

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

  • Drops file in System32 directory 12 IoCs
  • Program crash 1 IoCs
  • Modifies registry class 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
    "C:\Users\Admin\AppData\Local\Temp\92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Maps connected drives based on registry
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3536
    • C:\Windows\SysWOW64\ctfmen.exe
      ctfmen.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2304
      • C:\Windows\SysWOW64\smnss.exe
        C:\Windows\system32\smnss.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Maps connected drives based on registry
        • Drops file in System32 directory
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        PID:1768
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1768 -s 1336
          4⤵
          • Program crash
          PID:2040
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1768 -ip 1768
    1⤵
      PID:2908

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Windows\SysWOW64\ctfmen.exe

      Filesize

      4KB

      MD5

      153757920e76d5e7a5639a47f59a26f7

      SHA1

      92b1560064a5179ff773c0d50d4b6a59411ff0d9

      SHA256

      9b5990c7cf88f0bdbbe0ea346c88f8c7ca66a773c6785cba47276e94a4c0af61

      SHA512

      855db3bd23c9afcc6d2b18f928962a2c1d75331d7c99ad922214b069c70917cc27fd4af18853747d75c4078166cb725853757967b6bc0ed1fafc05188e5b5f79

    • C:\Windows\SysWOW64\grcopy.dll

      Filesize

      147KB

      MD5

      17d9cca71ffaf56f8bfee48fc9abb44d

      SHA1

      543c53255393a64436664e8843c5b4fbd93ce1fe

      SHA256

      7a9419deea78deb22b3adc0ab3951bd51f9bfd4be79595d27c70588e0d0b6d87

      SHA512

      1f3880bb734853a3af235a7c2894e16332341d606ff2f5596639ebb0f6da48f05f7bf364278fbc395caa3ea74b85a73ffbbddef89d222efd7e987c2dee3c6459

    • C:\Windows\SysWOW64\satornas.dll

      Filesize

      183B

      MD5

      ac38bbf2d9724c8af61ba3f88551a73f

      SHA1

      9a0798fc44981f7ff1621af8f9af78a09f404f24

      SHA256

      8f8e6b9253f1fd64c8a505e2f1faf0355b2286e235290ec13a6ad3a2a8c17f40

      SHA512

      8a95d3d1633ae0ebf92c8eff45cf81a865c1161176984f8fcec8e09c23b69537aad7e713580b6927327c82eb5120b745035c88ee899c3ea314b63c56987d94cd

    • C:\Windows\SysWOW64\shervans.dll

      Filesize

      8KB

      MD5

      fcdfd2701b6d6f2d2e59426b6bfda64e

      SHA1

      dca7d31299da59d5266bc0dfc7286dd02ccc0716

      SHA256

      98558adae220416b0e1c6387064009cbda641520b40c723d8c71463377b0b23a

      SHA512

      599c66a2096c398fb5bbb6eb09e529da394537dfa6e99853c04e53a59dcc9a30a3dadb87b41847c0451c2b6d90a004de6d955a655617abc0647d1bf79b4b8934

    • memory/1768-30-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1768-36-0x0000000010000000-0x000000001000D000-memory.dmp

      Filesize

      52KB

    • memory/1768-38-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2304-26-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/3536-0-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/3536-18-0x0000000010000000-0x000000001000D000-memory.dmp

      Filesize

      52KB

    • memory/3536-21-0x0000000010000000-0x000000001000D000-memory.dmp

      Filesize

      52KB

    • memory/3536-24-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB