Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/10/2024, 00:32

General

  • Target

    3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe

  • Size

    198KB

  • MD5

    4d1f016b9cb0580f26bd9c3da13d8724

  • SHA1

    8b1b123547493295d7e3902aa763781a66dfaee1

  • SHA256

    3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5

  • SHA512

    6a1f17bf7bb20570663701ab445c0e18f6e7ae04240f9b5ac259f351ce75f6e3406d5eaad41f8632974c9b546e38123b64830f85ca20578f6ed8038008c12502

  • SSDEEP

    3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT:X2vnSwjaOcADw9cUeCOf

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • 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 Program Files directory 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe
    "C:\Users\Admin\AppData\Local\Temp\3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4868
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\yiosmfik.exe "C:\Users\Admin\AppData\Local\Temp\3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:4580
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:1984
      • C:\Users\Admin\AppData\Local\Temp\yiosmfik.exe
        C:\Users\Admin\AppData\Local\Temp\\yiosmfik.exe "C:\Users\Admin\AppData\Local\Temp\3d2f283cc1f6f0056a4b31b3e5a28fda48646e1a70c3d027d8bb99517e2aafd5.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2172
        • \??\c:\Program Files\wtfpi\yjdqhbi.exe
          "c:\Program Files\wtfpi\yjdqhbi.exe" "c:\Program Files\wtfpi\yjdqhbi.dll",Compliance C:\Users\Admin\AppData\Local\Temp\yiosmfik.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • System Location Discovery: System Language Discovery
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:620

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Program Files\wtfpi\yjdqhbi.dll

          Filesize

          141KB

          MD5

          3b4e2a5a5541e7bab6246df0e76178b3

          SHA1

          73f8c1bd0e353cdbcfedfa06b1027a2a5cd5497f

          SHA256

          5aab5f19e90da1118b057ca9a72d2b8cc79b78df431bef2df641a187ea989e71

          SHA512

          a4aa334753bbb10d0ce2e518f3437bc2347e22b7363bf70fffdafe6b325cca7a39d59f22336ec1e8d16cfa916cc35a707417ce9bbd35faa5e3ca20f6b29fcc20

        • C:\Program Files\wtfpi\yjdqhbi.exe

          Filesize

          60KB

          MD5

          889b99c52a60dd49227c5e485a016679

          SHA1

          8fa889e456aa646a4d0a4349977430ce5fa5e2d7

          SHA256

          6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

          SHA512

          08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

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

          Filesize

          198KB

          MD5

          a214da0ebdbe44a7da6873adaccf96ae

          SHA1

          473b63d116d9472622f7a084dcf779633c1ca5f9

          SHA256

          676c5153fa9dc4edd45cb5dc8e5cafe12caf819f12071d221ba25560e2fb4908

          SHA512

          13aa71089922443264be59b7f994755679eabe8ab8a3132f3c8ed013dbbc09f4d1b6f8618913253a6b5a1a400ae8ceea1f7df07eb0628f786814fece6da2f9d1

        • memory/620-23-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/620-20-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/620-19-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/2172-9-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/2172-15-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/2172-8-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/4868-0-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/4868-4-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/4868-1-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/4868-2-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB