Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    09-11-2024 18:59

General

  • Target

    e5d9abd22a8e1ca75678a21b97e69c92acb3268670edaf1dd4831a16160cb019.exe

  • Size

    200KB

  • MD5

    9933491afe789b82723b7f8499fe85aa

  • SHA1

    3e3cbea4eab8dc8bc7b372567e1e99dbb4dc526f

  • SHA256

    e5d9abd22a8e1ca75678a21b97e69c92acb3268670edaf1dd4831a16160cb019

  • SHA512

    ac2ca28a223d67784833c581ac5b5ab90e9614f1e07a27cb9ed4e60cc901df0025fe95e9eb467cdbb37a77ceb7287c0f9c1598409c6f5a9e840f4eb4bd1fa7e2

  • SSDEEP

    3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTX:X2vnSwjaOcADw9cUeCOfx

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\e5d9abd22a8e1ca75678a21b97e69c92acb3268670edaf1dd4831a16160cb019.exe
    "C:\Users\Admin\AppData\Local\Temp\e5d9abd22a8e1ca75678a21b97e69c92acb3268670edaf1dd4831a16160cb019.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1996
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\fucyo.exe "C:\Users\Admin\AppData\Local\Temp\e5d9abd22a8e1ca75678a21b97e69c92acb3268670edaf1dd4831a16160cb019.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2148
      • 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:2924
      • C:\Users\Admin\AppData\Local\Temp\fucyo.exe
        C:\Users\Admin\AppData\Local\Temp\\fucyo.exe "C:\Users\Admin\AppData\Local\Temp\e5d9abd22a8e1ca75678a21b97e69c92acb3268670edaf1dd4831a16160cb019.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:2912
        • \??\c:\Program Files\yrztw\qyc.exe
          "c:\Program Files\yrztw\qyc.exe" "c:\Program Files\yrztw\qycky.dll",Compliance C:\Users\Admin\AppData\Local\Temp\fucyo.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:2788

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \??\c:\Program Files\yrztw\qycky.dll

    Filesize

    141KB

    MD5

    d641a1c94b35ee3544a35bf6631f5dfe

    SHA1

    2d4e4d14b7b9544afa6bd4ca554a37e5a2883318

    SHA256

    1f6c896495d177a86f6e381bcf63634ad5fa76e7e017f73b3397611ab0582a36

    SHA512

    19fefec5f7ca781c109a4cb3a2ecd7cc67a1cb409f1295789ff846112bf2492a6d3858aa83dffeda1714b400c7615cad85ce5bdf6d9672176343208ab165669a

  • \Program Files\yrztw\qyc.exe

    Filesize

    43KB

    MD5

    51138beea3e2c21ec44d0932c71762a8

    SHA1

    8939cf35447b22dd2c6e6f443446acc1bf986d58

    SHA256

    5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

    SHA512

    794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

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

    Filesize

    201KB

    MD5

    46c9404534dee2b6bd0461481e38fdde

    SHA1

    782cdf4231e63e8a278e192ac53cff44be574b0f

    SHA256

    260e6b4cec2c486694f958ddda2c82e927ce0921a1b325f9b20027f8bbab9ced

    SHA512

    d84ff4dcae4c61ca602dca86979612ff3c8984b37b2d8b1f2b2f49230868dd1d3d98483c77cde3ee2c130f23e1108a1c6e5ecc16ad003641137e434715888537

  • memory/1996-0-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB

  • memory/1996-4-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB

  • memory/1996-2-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB

  • memory/1996-1-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB

  • memory/2148-8-0x0000000000270000-0x00000000002BA000-memory.dmp

    Filesize

    296KB

  • memory/2788-28-0x0000000010000000-0x000000001004E000-memory.dmp

    Filesize

    312KB

  • memory/2788-35-0x0000000010000000-0x000000001004E000-memory.dmp

    Filesize

    312KB

  • memory/2788-29-0x0000000010000000-0x000000001004E000-memory.dmp

    Filesize

    312KB

  • memory/2788-26-0x0000000010000000-0x000000001004E000-memory.dmp

    Filesize

    312KB

  • memory/2788-27-0x0000000010000000-0x000000001004E000-memory.dmp

    Filesize

    312KB

  • memory/2912-11-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB

  • memory/2912-19-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB

  • memory/2912-10-0x0000000000400000-0x000000000044901D-memory.dmp

    Filesize

    292KB