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Analysis

  • max time kernel
    149s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    26/12/2023, 01:13

General

  • Target

    485801fd5eb9686f128062e61dfb2705.exe

  • Size

    512KB

  • MD5

    485801fd5eb9686f128062e61dfb2705

  • SHA1

    7426fb615ca20599daf1d1b19f32c4a3c820fc3b

  • SHA256

    e2cdda99a465ac49cebd6f883324a0f58f91a5941829bc87ea66f2ce86515f66

  • SHA512

    3233664b13d7aeab56b85221bac16d9b8be1eb24c86416b5c2cc377e79d8a1fe8f460912a681cd60dec36405718b26c4f19225086a9a0339aeb5dbfe17204dd5

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6N:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm5+

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 5 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
  • Executes dropped EXE 6 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.

  • Windows security modification 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Enumerates connected drives 3 TTPs 64 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Modifies WinLogon 2 TTPs 2 IoCs
  • AutoIT Executable 6 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 15 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of FindShellTrayWindow 50 IoCs
  • Suspicious use of SendNotifyMessage 37 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\SysWOW64\oqhpplcevyvjjee.exe
    oqhpplcevyvjjee.exe
    1⤵
    • Executes dropped EXE
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2100
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ledqzrnsudrqb.exe
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2624
  • C:\Windows\SysWOW64\mfkzhmgy.exe
    C:\Windows\system32\mfkzhmgy.exe
    1⤵
    • Executes dropped EXE
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    PID:2728
  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Windows\mydoc.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2688
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1200
    • C:\Windows\SysWOW64\ledqzrnsudrqb.exe
      ledqzrnsudrqb.exe
      1⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2968
    • C:\Windows\SysWOW64\ledqzrnsudrqb.exe
      ledqzrnsudrqb.exe
      1⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2928
    • C:\Windows\SysWOW64\mfkzhmgy.exe
      mfkzhmgy.exe
      1⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2888
    • C:\Windows\SysWOW64\lkkwmygbar.exe
      lkkwmygbar.exe
      1⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Loads dropped DLL
      • Windows security modification
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2384
    • C:\Users\Admin\AppData\Local\Temp\485801fd5eb9686f128062e61dfb2705.exe
      "C:\Users\Admin\AppData\Local\Temp\485801fd5eb9686f128062e61dfb2705.exe"
      1⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Drops file in Windows directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2140
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
      • Modifies Installed Components in the registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1440

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Windows\SysWOW64\lkkwmygbar.exe

      Filesize

      512KB

      MD5

      ac2ed448114d15ddbd0d5f91443cdaa5

      SHA1

      2eb0d1f518ebfe3e30aaaead6935e9aa07d40f7b

      SHA256

      56bbf1c578b509fd3a09407405d44f8944f250100ff9f6cd95193904fdcb96f5

      SHA512

      34507b497b76d982263164963df2e1dca760516a957a2b41c0dd346ee860d5fcf7c722d5b368e731c9552f3f810f8504ec5df4e6a8cbf8d3dd1e3a91254cf476

    • C:\Windows\SysWOW64\lkkwmygbar.exe

      Filesize

      381KB

      MD5

      30aec9e0b33fbd99234328357879f812

      SHA1

      3c9d37139d4ccfe2b694afba9633170d0f510a92

      SHA256

      15aad0daaaeea2f1eb8d19a8999f42844b2885d6bef949f6787feba7dad46563

      SHA512

      2060f2cc8c90181dd0a9965f0ff3a94aece08c82c4a68454846f66778bc60dade3ba5ddc38be57311ff4a7bd78217b89a9cd09837eee4b5d9893277299dad415

    • C:\Windows\SysWOW64\mfkzhmgy.exe

      Filesize

      382KB

      MD5

      badd716c7c48a8241873d9251da496d1

      SHA1

      6bd2a072c8f64a1780fe75d983cb7b6584985c6d

      SHA256

      ad4373bfa026f66380b8ce44d6bc300d146770114fb10087019af7c616dc11d7

      SHA512

      7bf3f09216e2ba376053e668963797cd78f91119467917a84f467dd3110d6bd26592784cdf7cefd293413ff5b6dbe10a996d89627177235d9f109732c05f36c5

    • C:\Windows\SysWOW64\oqhpplcevyvjjee.exe

      Filesize

      92KB

      MD5

      6662b185f19fbf697c56a25c92de7961

      SHA1

      0df0c0df0de3724258df2549c583e3c934aca726

      SHA256

      c11edb9e97848e20319fba876d9382c7193f68323eff1f7ed805bb04303bdc86

      SHA512

      c6e2cb83f68a63ca299dae843d2697d41dab8b565fb4005755b0d255b388779b6c1dad97375009c995f0a3d2e0acb4cc820090ca5dc24ee11e1a3de5b1a4921f

    • C:\Windows\SysWOW64\oqhpplcevyvjjee.exe

      Filesize

      512KB

      MD5

      5c365136daadbd1d7505678d737bfb1a

      SHA1

      41cb595693a7280fe3cd43db9ba3620f1c648fdc

      SHA256

      917d41f94c6d09ac5582c2b842bebf9bb0480118ef5c744d84ec8ee9967a4ba8

      SHA512

      2511045b693a94746c35a087c0ec395446651d58520d4bce793717967850244a788d3735c95070b485f7aca2d6ae68043fbcb137259a3c109a871f4c819075f0

    • memory/1440-77-0x0000000004360000-0x0000000004361000-memory.dmp

      Filesize

      4KB

    • memory/1440-80-0x0000000004360000-0x0000000004361000-memory.dmp

      Filesize

      4KB

    • memory/1440-85-0x0000000003D70000-0x0000000003D80000-memory.dmp

      Filesize

      64KB

    • memory/2140-0-0x0000000000400000-0x0000000000496000-memory.dmp

      Filesize

      600KB

    • memory/2688-48-0x0000000070D4D000-0x0000000070D58000-memory.dmp

      Filesize

      44KB

    • memory/2688-47-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2688-46-0x000000002FE81000-0x000000002FE82000-memory.dmp

      Filesize

      4KB

    • memory/2688-78-0x0000000070D4D000-0x0000000070D58000-memory.dmp

      Filesize

      44KB