Analysis

  • max time kernel
    111s
  • max time network
    115s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    15/10/2024, 21:46

General

  • Target

    a7127366793cf3c7627ac862fbf1f3355a4ffa411c33221a638be68aaae13871N.exe

  • Size

    610KB

  • MD5

    9b4e432cbfc2ee313c6cc3a455ff26a0

  • SHA1

    57295c087af7ffad7fd5c98323c9ffd835580848

  • SHA256

    a7127366793cf3c7627ac862fbf1f3355a4ffa411c33221a638be68aaae13871

  • SHA512

    86a7eea6f1a377ba585ab9d9111697b264ab8ebc686b9548d2e56e9c9d0ef256e51cd2cd86d70091b92dc0808f9a55a0ffae24b4b08cc71dd340fe9d7ffdc586

  • SSDEEP

    12288:EVRTE3het1yJh2HduH7GqjTyiVRTE3het1yJh2HduH7GqjTy:IX1AwHsH7hTyOX1AwHsH7hTy

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 7 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a7127366793cf3c7627ac862fbf1f3355a4ffa411c33221a638be68aaae13871N.exe
    "C:\Users\Admin\AppData\Local\Temp\a7127366793cf3c7627ac862fbf1f3355a4ffa411c33221a638be68aaae13871N.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2372
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\qajrl.exe "C:\Users\Admin\AppData\Local\Temp\a7127366793cf3c7627ac862fbf1f3355a4ffa411c33221a638be68aaae13871N.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2336
      • 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:2412
      • C:\Users\Admin\AppData\Local\Temp\qajrl.exe
        C:\Users\Admin\AppData\Local\Temp\\qajrl.exe "C:\Users\Admin\AppData\Local\Temp\a7127366793cf3c7627ac862fbf1f3355a4ffa411c33221a638be68aaae13871N.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2392
        • \??\c:\Program Files\vmrxf\nil.exe
          "c:\Program Files\vmrxf\nil.exe" "c:\Program Files\vmrxf\nilul.dll",Scheduler C:\Users\Admin\AppData\Local\Temp\qajrl.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:2780

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          610KB

          MD5

          f18c064f44552f38ffb7061cfe86a3b4

          SHA1

          9a8e86babd8f0808b053df87352bf7f48bcaf8ed

          SHA256

          98c3ffe02b906bac74a8e235d6beaf72f60eb95699e2b9d51943a41b017323fc

          SHA512

          ff565309b9f942ac36cd81aeb6b1305368f6e4a791c03ff118107cffd72095fa5faf56cc2764aa30e776774ef02b1c34b5d35e3f6b48f0cb0cb1cfc020ce1f06

        • \??\c:\Program Files\vmrxf\nilul.dll

          Filesize

          184KB

          MD5

          2adab9ca10fdd07ea2c08bb5a926e42c

          SHA1

          2c39c60e4aee123900bc0fc652ee726374af251c

          SHA256

          207ba44b149457fd916d1d7717bd675bd3b387a6ff2d43246c00bf7656ffea79

          SHA512

          bf548d8f05dfda212a8c16c1e9c50c427a7086311c7569b93637bdb305a791c9b909a5b010384b113b82de74f61e88ec3bf66856e883b41a24960097897e56e6

        • \Program Files\vmrxf\nil.exe

          Filesize

          43KB

          MD5

          51138beea3e2c21ec44d0932c71762a8

          SHA1

          8939cf35447b22dd2c6e6f443446acc1bf986d58

          SHA256

          5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

          SHA512

          794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

        • memory/2780-19-0x0000000010000000-0x0000000010074000-memory.dmp

          Filesize

          464KB

        • memory/2780-18-0x0000000010000000-0x0000000010074000-memory.dmp

          Filesize

          464KB

        • memory/2780-17-0x0000000010000000-0x0000000010074000-memory.dmp

          Filesize

          464KB

        • memory/2780-20-0x0000000010000000-0x0000000010074000-memory.dmp

          Filesize

          464KB

        • memory/2780-23-0x0000000010000000-0x0000000010074000-memory.dmp

          Filesize

          464KB