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
    09-11-2024 21:01

General

  • Target

    31621debc461a0a11d643c3eb72ecf66463ca973e6afb97babb7ab505b9021fb.exe

  • Size

    612KB

  • MD5

    37b0bf8deb5f81a3ec3421ca00fad8b8

  • SHA1

    91c596ea171011327a8d5cef9f7e9a3e1fe469c8

  • SHA256

    31621debc461a0a11d643c3eb72ecf66463ca973e6afb97babb7ab505b9021fb

  • SHA512

    a38624bdc3205965d5c8ec9c3b0d9c541df267973673dd4c0dfede3b47d90bc05ab15a9f2738cc3ee48792557552ca8378fc886c853c431dbd1b11bd2ea15b09

  • SSDEEP

    12288:EVRTE3het1yJh2HduH7GqjTyiVRTE3het1yJh2HduH7GqjTy:IX1AwHsH7hTyOX1AwHsH7hTy

Malware Config

Signatures

  • 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\31621debc461a0a11d643c3eb72ecf66463ca973e6afb97babb7ab505b9021fb.exe
    "C:\Users\Admin\AppData\Local\Temp\31621debc461a0a11d643c3eb72ecf66463ca973e6afb97babb7ab505b9021fb.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2212
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\bjcxis.exe "C:\Users\Admin\AppData\Local\Temp\31621debc461a0a11d643c3eb72ecf66463ca973e6afb97babb7ab505b9021fb.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2188
      • 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:2076
      • C:\Users\Admin\AppData\Local\Temp\bjcxis.exe
        C:\Users\Admin\AppData\Local\Temp\\bjcxis.exe "C:\Users\Admin\AppData\Local\Temp\31621debc461a0a11d643c3eb72ecf66463ca973e6afb97babb7ab505b9021fb.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:2388
        • \??\c:\Program Files\pbztam\jgx.exe
          "c:\Program Files\pbztam\jgx.exe" "c:\Program Files\pbztam\jgxhn.dll",Scheduler C:\Users\Admin\AppData\Local\Temp\bjcxis.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:2880

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \??\c:\Program Files\pbztam\jgxhn.dll

    Filesize

    184KB

    MD5

    02968025d0cd2d99813676e5e1c6b5cb

    SHA1

    55cf7ba33eb0b4ecd0cea466e3c1f857ff0660c1

    SHA256

    cd59df04371c35400261f0ce2189e561cf06e06d0bc77504bb7060880aaae337

    SHA512

    6fb23000e134d6f72689b50d73bd4f0e6ad501d6dacf50c811fa0ef66d9df712b71747b669cc63808153c8deee9c794592b0c13210a3c1e0148772a644bf9219

  • \Program Files\pbztam\jgx.exe

    Filesize

    43KB

    MD5

    51138beea3e2c21ec44d0932c71762a8

    SHA1

    8939cf35447b22dd2c6e6f443446acc1bf986d58

    SHA256

    5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

    SHA512

    794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

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

    Filesize

    613KB

    MD5

    faec7e25512c18ed5645e225837f1797

    SHA1

    f2ce92039bbf70bdb6a7e04d3cc20a998bd9cdb3

    SHA256

    b6844d70efa2e0411ba7c11f9a28ff95bfebfafcafe23267d70e2180c3b5e31c

    SHA512

    9baf942b04f70cb1c075b8fbf2034da440c86bbdad2223288a01b7fd6bacfa9368f2d57e21f91beda2f741cfa9cf75e999c605936a192dc9b8a0a58e11e49ba3

  • memory/2880-18-0x0000000010000000-0x0000000010074000-memory.dmp

    Filesize

    464KB

  • memory/2880-17-0x0000000010000000-0x0000000010074000-memory.dmp

    Filesize

    464KB

  • memory/2880-19-0x0000000010000000-0x0000000010074000-memory.dmp

    Filesize

    464KB

  • memory/2880-22-0x0000000010000000-0x0000000010074000-memory.dmp

    Filesize

    464KB