Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    07/05/2024, 04:15

General

  • Target

    33c2e83deecb9631716c249016ba7a460398af74260648a5b434ec0ea2cb793c.exe

  • Size

    406KB

  • MD5

    6261b4321aed3ecd2f700ed37c64843c

  • SHA1

    7eeeb49a06410ef6df0e361d3dc5a43ee10492ad

  • SHA256

    33c2e83deecb9631716c249016ba7a460398af74260648a5b434ec0ea2cb793c

  • SHA512

    7971ae6bcb18466564be65196691aa62f8bc7fbd071e954749640bc29d4d127383291d9ce1f130865d8bb978e88a1ed130c57416364a7c8de774db2eeb0298d3

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse

Malware Config

Signatures

  • Blocklisted process makes network request 10 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 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.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\33c2e83deecb9631716c249016ba7a460398af74260648a5b434ec0ea2cb793c.exe
    "C:\Users\Admin\AppData\Local\Temp\33c2e83deecb9631716c249016ba7a460398af74260648a5b434ec0ea2cb793c.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1996
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\nmegwa.exe "C:\Users\Admin\AppData\Local\Temp\33c2e83deecb9631716c249016ba7a460398af74260648a5b434ec0ea2cb793c.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2160
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:2796
      • C:\Users\Admin\AppData\Local\Temp\nmegwa.exe
        C:\Users\Admin\AppData\Local\Temp\\nmegwa.exe "C:\Users\Admin\AppData\Local\Temp\33c2e83deecb9631716c249016ba7a460398af74260648a5b434ec0ea2cb793c.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2628
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\tpgas\rlyfbdu.dll",Verify C:\Users\Admin\AppData\Local\Temp\nmegwa.exe
          4⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2724

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • \Program Files\tpgas\rlyfbdu.dll

          Filesize

          228KB

          MD5

          c8f3c9dc95bf06b8ba775cedf3e7336a

          SHA1

          e727801cf5a852cd96d360b2887281b48b8a1450

          SHA256

          8ad0d4f5db68256fd9d6dfa3f95bce78c721b4a344ab6e1c15d44804a504f1de

          SHA512

          95f156d8d221f8c9ecfece0bbd2af526ee68ad80c1cfe98a876fe877489f2081ec385d2174b97ee63454c7a4c183b51d4e1522c6208e7ac81a8117e9de117708

        • \Users\Admin\AppData\Local\Temp\nmegwa.exe

          Filesize

          406KB

          MD5

          5802ac3ffc78ad53bb6c27a7e798f5f8

          SHA1

          f0a2fc04c09b8e407d2c84bd7c5178d063447b91

          SHA256

          401334a26250d2c2557deeb894b17c74bd2136498fe9754338423587a2594189

          SHA512

          4575d0c652583fe91f54aedac16ac89fcfed3973ac08dce122dc5cd02af4dff33575b26bf99675786e55dd994b5f8c29b7b93e3aaa896f850586b1279e5d8314

        • memory/1996-0-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/1996-2-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/2160-7-0x0000000000170000-0x00000000001D4000-memory.dmp

          Filesize

          400KB

        • memory/2628-9-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/2724-16-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/2724-19-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/2724-18-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/2724-15-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/2724-14-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/2724-21-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB