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
    15/10/2024, 22:29

General

  • Target

    d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe

  • Size

    198KB

  • MD5

    1669832b36b31493c90462299a15ff87

  • SHA1

    5ea3ae9fda554d12d8ff14532e25572b31df4ca6

  • SHA256

    d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4

  • SHA512

    2f7bbf294ee17b0b4903bddf73960a52d48d6035cb930976e6925d1a7e82bf7fb22487ae588e425f19c28038570cb385198bb045abb7578dcba5cfb7f6643b24

  • SSDEEP

    3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT:X2vnSwjaOcADw9cUeCOf

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\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe
    "C:\Users\Admin\AppData\Local\Temp\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2756
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\wpvxozt.exe "C:\Users\Admin\AppData\Local\Temp\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:3004
      • 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:2768
      • C:\Users\Admin\AppData\Local\Temp\wpvxozt.exe
        C:\Users\Admin\AppData\Local\Temp\\wpvxozt.exe "C:\Users\Admin\AppData\Local\Temp\d46b0c00caddd590ba6767e92e9dfb5822d8c1c5520ff29aecbf51c25a33c2b4.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:2584
        • \??\c:\Program Files\yxijkt\otc.exe
          "c:\Program Files\yxijkt\otc.exe" "c:\Program Files\yxijkt\otcyi.dll",Compliance C:\Users\Admin\AppData\Local\Temp\wpvxozt.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:2720

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\wpvxozt.exe

          Filesize

          198KB

          MD5

          e4fb0e9ac67da25a88617fa850a0a759

          SHA1

          e21fe64bdb879bbe80b82039411462dba770d193

          SHA256

          604ae4c9a91ccdd814e4d4c9f07fc485e142e40d4686169b56140a7b9c0905ea

          SHA512

          75cd24a1c5d4ea40d3926c1e2834d0c1b6dd4417408ea0198d88b450944b5c067babeefef7c961ff798b9a0d0ad9d0c3b3625dc92cd036fb6d33c192dfbe3e3d

        • \??\c:\Program Files\yxijkt\otcyi.dll

          Filesize

          141KB

          MD5

          48bd8d59168be1125f963631e39a2a6d

          SHA1

          de785f616eb034b36b9caeacc22f1c8a40efb539

          SHA256

          a9604a52c6e0b069eff7ee6884ec9f7f5a4313d1d031838977ecac0e5f1d8085

          SHA512

          f56f7e55e27c2c707c66716f43e7987799813287ece5b7a942beaae6364197d1a80045e845556512860e50547d9024847bad113b248d0842437e408978c028eb

        • \Program Files\yxijkt\otc.exe

          Filesize

          43KB

          MD5

          51138beea3e2c21ec44d0932c71762a8

          SHA1

          8939cf35447b22dd2c6e6f443446acc1bf986d58

          SHA256

          5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

          SHA512

          794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

        • memory/2584-11-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/2584-18-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/2584-10-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/2720-26-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/2720-27-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/2720-28-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/2720-30-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/2720-32-0x0000000010000000-0x000000001004E000-memory.dmp

          Filesize

          312KB

        • memory/2756-4-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/2756-2-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/2756-1-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/2756-0-0x0000000000400000-0x000000000044901D-memory.dmp

          Filesize

          292KB

        • memory/3004-7-0x0000000000120000-0x000000000016A000-memory.dmp

          Filesize

          296KB