Analysis

  • max time kernel
    142s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    10-11-2024 01:33

General

  • Target

    100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe

  • Size

    158KB

  • MD5

    c143a3e85666d159b6ebe98f4bfec793

  • SHA1

    2d8a854a40a99e0f8e3770b29c8685cfaf7290ee

  • SHA256

    100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc

  • SHA512

    2d1b9105e015ab26b80a4fd6cf88dbdb7b6e98bafc641c0d88eac3c24b3dbb2bd9e4e03f102a038cb6c5b8ca4a3f2a4fbf0111e6f1a6179b2d494b6dd03c52ed

  • SSDEEP

    3072:oZpYg19EeiLLmjempGuCYooEK1JWaCItULG3rt2Wcora4dI:OPjEl6jLiQ1JW+Oy3p/

Malware Config

Signatures

  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • 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\100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe
    "C:\Users\Admin\AppData\Local\Temp\100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2308
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\hotta.exe "C:\Users\Admin\AppData\Local\Temp\100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:1812
      • 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:1996
      • C:\Users\Admin\AppData\Local\Temp\hotta.exe
        C:\Users\Admin\AppData\Local\Temp\\hotta.exe "C:\Users\Admin\AppData\Local\Temp\100b4d183aa53f663a639cff1490ec76942ad04d884102d89896880534ba70bc.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:2844
        • \??\c:\Program Files\ynrwl\aavrvgzu.exe
          "c:\Program Files\ynrwl\aavrvgzu.exe" "c:\Program Files\ynrwl\aavrvgzu.dll",SetHandle C:\Users\Admin\AppData\Local\Temp\hotta.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:2696

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \??\c:\Program Files\ynrwl\aavrvgzu.dll

    Filesize

    128KB

    MD5

    7e4aa5c21616797640d145c6e2e00c00

    SHA1

    234c825a2fb2977112f1f2980b38610068ee7752

    SHA256

    36875f67e214bab64df24f5174ec850f4f9a2ffccdf6ff3c04e7e174a0382fe3

    SHA512

    269362d7880ba4da2bf4ea1f5decbee8d5ed47c720efc5e7b1c62a29d848de5bdb2077102b9092091e3dfd067c7cc2934dbbc0e9ed5dd21b795ee6cf361bd5e8

  • \Program Files\ynrwl\aavrvgzu.exe

    Filesize

    43KB

    MD5

    51138beea3e2c21ec44d0932c71762a8

    SHA1

    8939cf35447b22dd2c6e6f443446acc1bf986d58

    SHA256

    5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

    SHA512

    794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

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

    Filesize

    158KB

    MD5

    629c5a2717d5fb8d23fe99413ff4c31e

    SHA1

    a8028f7f0492678fd5271f9a2e5a8f0f741315c9

    SHA256

    ba83ed6687577ad155df49e85fb037c5e25d2d9162a3f1499b8153d2498f5826

    SHA512

    5c2535c3d3a71a0f5296c13f81543a14f6469124cdb0c4a478f415e8aa232b5ed11163456914a00e194174196e2320ec355f2d31ea07894bee34a07120556220

  • memory/1812-6-0x0000000000180000-0x00000000001B0000-memory.dmp

    Filesize

    192KB

  • memory/2308-0-0x0000000000400000-0x000000000042F036-memory.dmp

    Filesize

    188KB

  • memory/2308-2-0x0000000000400000-0x000000000042F036-memory.dmp

    Filesize

    188KB

  • memory/2696-23-0x0000000010000000-0x0000000010048000-memory.dmp

    Filesize

    288KB

  • memory/2696-24-0x0000000010000000-0x0000000010048000-memory.dmp

    Filesize

    288KB

  • memory/2696-29-0x0000000010000000-0x0000000010048000-memory.dmp

    Filesize

    288KB

  • memory/2696-30-0x0000000010000000-0x0000000010048000-memory.dmp

    Filesize

    288KB

  • memory/2844-8-0x0000000000400000-0x000000000042F036-memory.dmp

    Filesize

    188KB

  • memory/2844-16-0x0000000000400000-0x000000000042F036-memory.dmp

    Filesize

    188KB