Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    11-06-2024 15:33

General

  • Target

    c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe

  • Size

    407KB

  • MD5

    2701aca13e64655f8e63d894b0bb53f4

  • SHA1

    2efd3f99b5ac3bcfe1915513b5549dc04bac854f

  • SHA256

    c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b

  • SHA512

    62f9b9677a11984f6089bf567d2e15fe57cc4cc061b16cfff2be2e93eaa5acd93aef2e26e4a648eff53e99161d29d2aa0522452d92b86ed834d724112c522ed4

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4u:gtRfJcNYFNm8UhlZGseu

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\c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe
    "C:\Users\Admin\AppData\Local\Temp\c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2268
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\rvrpy.exe "C:\Users\Admin\AppData\Local\Temp\c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2204
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:2220
      • C:\Users\Admin\AppData\Local\Temp\rvrpy.exe
        C:\Users\Admin\AppData\Local\Temp\\rvrpy.exe "C:\Users\Admin\AppData\Local\Temp\c000a71356f868de34b6a50dfb5bd5f79f71006171645fc8984b100aa373ab0b.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2132
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\suokosf\pwkump.dll",Verify C:\Users\Admin\AppData\Local\Temp\rvrpy.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:2660

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \??\c:\Program Files\suokosf\pwkump.dll

    Filesize

    228KB

    MD5

    9858ab4844a6547f7aca1733096be9ed

    SHA1

    a4f32181a212c09a6bc44e2a6d6f27cc489f4f75

    SHA256

    f4b32b38592b0b2de79378e165cebdcfae567365a44edd6c90803634ad095a22

    SHA512

    a10da986c104308f789c91da5e5f89b70b448b7893ad7ce9b378e5c7d22fd3e23aed23528bdc4fcf56fd7b1494353e86ec56d8d5bc3dadad887b5d23db7cad06

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

    Filesize

    407KB

    MD5

    88f195539b47b92fa635a851e1d388ae

    SHA1

    3a1022fc35a0fba1f10880b584574f395c4498ee

    SHA256

    07c75089343963b3f20fd8a3527abd8d0c71e621f8c3e6f3ee96e6ea479ca0e4

    SHA512

    36508fa8dcbd5ff75236b8894223962e53a8299fcd0d57edf251115cb69692c976b1c0dd75fc9394d579f9b8bf856126928c77d16c1e999ee27ae77beaff3b3d

  • memory/2132-10-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/2204-7-0x0000000000370000-0x00000000003D4000-memory.dmp

    Filesize

    400KB

  • memory/2204-6-0x0000000000370000-0x00000000003D4000-memory.dmp

    Filesize

    400KB

  • memory/2268-0-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/2268-2-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/2660-16-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2660-17-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2660-19-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB