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Analysis

  • max time kernel
    142s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    09/07/2024, 21:31

General

  • Target

    3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe

  • Size

    90KB

  • MD5

    2028d19fdf91b38e6c8428af41fc9bd4

  • SHA1

    333df9c2f10fc40c130c186d8537451ae166e8e9

  • SHA256

    3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb

  • SHA512

    023bc68a4e5928eb5ace07a8bc3935e294e649bcfe5c4c7e2b1846af9f8bbef145968480e5ee2b52c3b09c14a1210e61f75bd8b067306f9152d3b1e7cc62ea72

  • SSDEEP

    1536:1MIPgEm56wnbkKC2ZyBJU066lwLCRVEB+nR/y8cmNrEIviCOzuajkrDl9HNSj1:11PgEOng1d66jRVa+n4NmNNouukrD7Hg

Malware Config

Signatures

  • Blocklisted process makes network request 10 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Kills process with taskkill 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe
    "C:\Users\Admin\AppData\Local\Temp\3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2280
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dhxuk.exe "C:\Users\Admin\AppData\Local\Temp\3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2552
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:2540
      • C:\Users\Admin\AppData\Local\Temp\dhxuk.exe
        C:\Users\Admin\AppData\Local\Temp\\dhxuk.exe "C:\Users\Admin\AppData\Local\Temp\3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2260
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\eqoom\vhvxuvs.hxv",crc32 C:\Users\Admin\AppData\Local\Temp\dhxuk.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)
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2740
          • \??\c:\windows\SysWOW64\taskkill.exe
            taskkill /f /im attrib.exe
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:2828

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \??\c:\eqoom\vhvxuvs.hxv

    Filesize

    57KB

    MD5

    2f53f49e01f09d6e6064871eec1955cd

    SHA1

    a6e1a6e5c2080d0fb2f7a872e3902a8a4a1a9b5f

    SHA256

    964e4dd2532d540bb61d3c7ccc833f2358d8cd6b2eabc3a2d51183a18b59f82d

    SHA512

    2cb98030c3df7417c04f796f78f23f96d381871d9c7ae4a14116764e915b2e2f56b9b3a6fb76fedc50a17788de9538fc7954a7b73bf17e4be43e1fc1a06bc218

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

    Filesize

    91KB

    MD5

    2f5c1cc5b8957fa58df80236177d0ace

    SHA1

    38d4a09cf034e837e142cdf4da2bcef21bfbc622

    SHA256

    5bc6963cb9023468712cb663714e81967ee1c18fffcd7fe88e1d9831b71555fe

    SHA512

    0a5363f09dd3d4afc1bb0c0ad856da870bd785734b7e5122c91f3a0b8b3ccfd1ec88a2373badfb180ce1c02bd4ad9391e206d6ce7ee3002fa618d130c6a430ef

  • memory/2260-10-0x0000000000270000-0x0000000000271000-memory.dmp

    Filesize

    4KB

  • memory/2260-12-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/2280-3-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/2280-0-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/2280-1-0x00000000002B0000-0x00000000002B1000-memory.dmp

    Filesize

    4KB

  • memory/2552-9-0x00000000000B0000-0x00000000000D8000-memory.dmp

    Filesize

    160KB

  • memory/2552-8-0x00000000000B0000-0x00000000000D8000-memory.dmp

    Filesize

    160KB

  • memory/2740-15-0x0000000010000000-0x0000000010022000-memory.dmp

    Filesize

    136KB

  • memory/2740-16-0x0000000010000000-0x0000000010022000-memory.dmp

    Filesize

    136KB

  • memory/2740-20-0x0000000010000000-0x0000000010022000-memory.dmp

    Filesize

    136KB

  • memory/2740-21-0x0000000010000000-0x0000000010022000-memory.dmp

    Filesize

    136KB

  • memory/2740-22-0x0000000010000000-0x0000000010022000-memory.dmp

    Filesize

    136KB