Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    11-06-2024 13:32

General

  • Target

    a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe

  • Size

    406KB

  • MD5

    7eaba6702a0f2b41ff07b8ba063a7f8a

  • SHA1

    84e4dbc9571f641252389f979b76f5e6bb3d8b5e

  • SHA256

    a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147

  • SHA512

    c8b6dfe813fc8b5b413c62ffbbd64979200f32d17cf62ffe7026403377f15f0bf24de1e62294c12854efb67ecde7c29f288fd1d206a2cc51ffcd57a6e6eefe76

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4R:gtRfJcNYFNm8UhlZGseR

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\a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe
    "C:\Users\Admin\AppData\Local\Temp\a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1648
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\mumlltpsm.exe "C:\Users\Admin\AppData\Local\Temp\a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2984
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:1228
      • C:\Users\Admin\AppData\Local\Temp\mumlltpsm.exe
        C:\Users\Admin\AppData\Local\Temp\\mumlltpsm.exe "C:\Users\Admin\AppData\Local\Temp\a936358d2c1bc40cada39b3467e78138161a5c4be44143d2c16c8e13acc2f147.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2640
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\ourga\uhukfaz.dll",Verify C:\Users\Admin\AppData\Local\Temp\mumlltpsm.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:2204

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \??\c:\Program Files\ourga\uhukfaz.dll

    Filesize

    228KB

    MD5

    4f1fd4bb8be6a930982fe19d1b20df5b

    SHA1

    6ead49dc3c3b65b6068f7d6c5af8b78ccc8f5fff

    SHA256

    fd288afbf5024b589d4b691c03f6839bec49ef79755e9b36b393aff3e55ce9f4

    SHA512

    74accffc2e6980e8c9ec7c0ce48a9fa7549e95c04d5eac875c1f75f154ba24fffba3803c34c28639a36ddd298e6045ee1266b26752308d9e11856c3d930ea4d0

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

    Filesize

    406KB

    MD5

    3a2fff71ac82ea9515d022f6420f950b

    SHA1

    ee6df0348584d021dbef6369aaf5f31921865293

    SHA256

    3c668cf0d3c96553a2a8e6e1312bdaffcf17556bcaee4b2b23a7790dd5ba99ee

    SHA512

    de95ac200d00391021eb702741072bc91024da9a93a2821676a53d8e31c1cb5ce0eb058617ae252f3e9e8cacd72b7c43fe5396573b659539c127bca55c7b74b3

  • memory/1648-0-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/1648-2-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/2204-15-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2204-16-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2204-17-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2204-19-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/2640-9-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/2984-7-0x0000000002300000-0x0000000002364000-memory.dmp

    Filesize

    400KB