Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    07/05/2024, 03:20

General

  • Target

    d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe

  • Size

    405KB

  • MD5

    4070d58fc98be5e72f8b0386d19a5e57

  • SHA1

    10cbae7e59cb4ea5f2d35d98af6cff2a0cfafc3f

  • SHA256

    d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13

  • SHA512

    6d3627bf5f1415713e25384ec12ab01e84878ca44ad8c369e50a48a696ca9a84096be6e433a6180503a14821535625385154ca5201762253b958cccf3b7d2f87

  • 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\d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe
    "C:\Users\Admin\AppData\Local\Temp\d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2216
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\zfmjf.exe "C:\Users\Admin\AppData\Local\Temp\d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2240
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:2768
      • C:\Users\Admin\AppData\Local\Temp\zfmjf.exe
        C:\Users\Admin\AppData\Local\Temp\\zfmjf.exe "C:\Users\Admin\AppData\Local\Temp\d155797e28881183eb868a20d162250f14567ca18e6cad0ad1be82c899692d13.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2584
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\ftnjx\rjgypyuwv.dll",Verify C:\Users\Admin\AppData\Local\Temp\zfmjf.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:2620

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • \??\c:\Program Files\ftnjx\rjgypyuwv.dll

          Filesize

          228KB

          MD5

          3abf7dc8833cf450001398020923717b

          SHA1

          8a553cbcb78d865e590a789ae0ed30faf497c1b4

          SHA256

          e1ae34a408922f64621c689f825804c11469f0c9095fe28ddcba761f46f69657

          SHA512

          3141ecb01cc45cf133e72dff742faad47b384d24c8d5ca73ca3dadeb775bf3ac32aa7f76b6b2bba3a3684684874436e2cf9f94a8b0c05fb13a75e8fcd5dd9426

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

          Filesize

          406KB

          MD5

          248d79d5a8a5e14162f0c234a6ee9052

          SHA1

          0a21c45323857d302b7ccf541a863bed39b0cb11

          SHA256

          58d1c79443158ce45569f9a8ed8b1af19d5c6350b637a68f56d677e60f997ec1

          SHA512

          df88cb3dc501aca1743cfe054a478984a251ae8c3af6d8ed328b509e63588c8044098e305b88c86fc2b552e550908a9d1a9902d5b09fca3f8af448265e819349

        • memory/2216-0-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/2216-2-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/2240-5-0x0000000000120000-0x0000000000184000-memory.dmp

          Filesize

          400KB

        • memory/2584-9-0x0000000000400000-0x0000000000464000-memory.dmp

          Filesize

          400KB

        • memory/2620-16-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/2620-17-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/2620-14-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/2620-18-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB

        • memory/2620-20-0x0000000010000000-0x0000000010080000-memory.dmp

          Filesize

          512KB