Analysis

  • max time kernel
    147s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/10/2024, 22:29

General

  • Target

    d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe

  • Size

    198KB

  • MD5

    1669832b36b31493c90462299a15ff87

  • SHA1

    5ea3ae9fda554d12d8ff14532e25572b31df4ca6

  • SHA256

    d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4

  • SHA512

    2f7bbf294ee17b0b4903bddf73960a52d48d6035cb930976e6925d1a7e82bf7fb22487ae588e425f19c28038570cb385198bb045abb7578dcba5cfb7f6643b24

  • 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\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe
    "C:\Users\Admin\AppData\Local\Temp\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1528
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\sbfmgomf.exe "C:\Users\Admin\AppData\Local\Temp\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:3704
      • 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:1684
      • C:\Users\Admin\AppData\Local\Temp\sbfmgomf.exe
        C:\Users\Admin\AppData\Local\Temp\\sbfmgomf.exe "C:\Users\Admin\AppData\Local\Temp\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.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:3040
        • \??\c:\Program Files\uywot\txmfybtau.exe
          "c:\Program Files\uywot\txmfybtau.exe" "c:\Program Files\uywot\txmfybtau.dll",Compliance C:\Users\Admin\AppData\Local\Temp\sbfmgomf.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:32

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Program Files\uywot\txmfybtau.exe

          Filesize

          60KB

          MD5

          889b99c52a60dd49227c5e485a016679

          SHA1

          8fa889e456aa646a4d0a4349977430ce5fa5e2d7

          SHA256

          6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

          SHA512

          08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

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

          Filesize

          199KB

          MD5

          553e15818e79eef0553fe04260db0e65

          SHA1

          e8698a4c458e899c7c99badd686bc61997f70fe2

          SHA256

          435a4e6a0020be7b11e246bcffa9ea52b11777b510bf77337e48a5ad28f14e5d

          SHA512

          96938ef1a280f08a606be2ae0b6b87a1c26a88badbb2e5d79acff27af56a19b38ac6ba951a943b31156077f958bcc189bb8691e2b9eb343cfa2b7c44e4d03d9d

        • \??\c:\Program Files\uywot\txmfybtau.dll

          Filesize

          141KB

          MD5

          b890bababa5a8daee14700896482ed0d

          SHA1

          6f63c1ecda0bc293f26abcc21643f358e72fad3e

          SHA256

          f5c0e1fe268d3f432d6b16e51a8b7c9b6dfdb72648dc62ab63b3ac18959328f9

          SHA512

          6e8afa54e2100c1ba9496860d98033888e999bc8e3c04e53f2fee5f6a463d9f4ab689c7e32ae4fbaa90cb7fd0c931e38937684682ad96ba00794bc90cefa5fec

        • memory/32-25-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/32-23-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/32-21-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/32-20-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/1528-5-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/1528-0-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/1528-2-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/1528-1-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/3040-16-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/3040-9-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/3040-10-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB