Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    18/06/2024, 06:41

General

  • Target
    Bilibilizhubozhushou/lpk.dll
  • Size 136KB
  • Sample240618-hfzfcsvhmq
  • SHA256 a901c3ba8fa3bdf95db6aa5b777dddedbdeaa253e95a1d52bfe461e0894128fb
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 IoCs
  • UPX packed file 14 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 52 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\Bilibilizhubozhushou\lpk.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2420
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\Bilibilizhubozhushou\lpk.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:2932
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3008
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2728
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2728 CREDAT:275457 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:3000
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2896
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2896 CREDAT:275457 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:2516
      • C:\Users\Admin\AppData\Local\Temp\hrl4CAA.tmp
        C:\Users\Admin\AppData\Local\Temp\hrl4CAA.tmp
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3044
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\hrl4CAA.tmp > nul
          4⤵
            PID:2736
    • C:\Windows\ggmiuy.exe
      C:\Windows\ggmiuy.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      PID:2248

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 a92b6321b6ae8fdf6c217632abc180cdaa8af026146ec791c9d3ba8b3b3f451e
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 a7f8109dfe14fa9cdc1305c873dbb40c4eeca9100b449ef571a2689708eb43ed
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 514e1b12ecebc74a2906c8f6eaa845c8244744c2a7dbb2448ad5bf44e5fb1f49
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 e83f8c23901e0261a1db391cbf2a87797b01bf560b8784d571f79bb7bd6eedb9
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 c0066d474cada362f20bc757ca80b18b53615b0391baa50463cc300b5fa99c34
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 b0eb4c4e8103b67f243babc8faafc323f4ca49f187639f781a7eccb5ec09f560
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 3a8fb8fcab62ebca996d487727d3c2a8b8cc81d1f25b0748eac9e475bee72c6e
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 708f7e7ae262ce42367fc6de9bbc6fe538788b65d526535d291ffd4da1c0929d
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 9d367d4b907a87052f9e1a4498c9cd3cfaa891237d0d8861bb0d2130d8da20cc
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 c8b6034a673168549987d708bea6d1ccf64a62688eb81838504d6a04b3fc2234
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 b32e594e38c0fac5658c28c358ebeb4e619c67057dd99e3e33869d363ea47137
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 0245c87129610c310d0cda9c0f25596297a00673b7468aba906c1a35e88d2fe3
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 f17490c835ecdffbf036f314ba1add51524e306d00858fde0062e8a223d90f7f
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 c6c6f3eaa0377e41d118ac87c0ca2e70acb46806a54eed5f42f1642bbd204946
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 06e7d227462da684386594040848b21762e17d50a07825b93ace8e16d9db430a
          • MD5 SHA1 SHA512

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 342B
          • SHA256 e708f3a0b384b252e90af746fa4172c396a0370c1a2067818a0a4a72e1b416d0
          • MD5 SHA1 SHA512

          RecoveryStore.{CBD6BE71-2D3D-11EF-B47E-DA79F2D4D836}.dat

          • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{CBD6BE71-2D3D-11EF-B47E-DA79F2D4D836}.dat
          • Size 4KB
          • SHA256 d9762759456ae3affd8f723e240a7f408dac4fae68da8944c247a0aa697ba910
          • MD5 SHA1 SHA512 SSDEEP

          RecoveryStore.{CBD6E581-2D3D-11EF-B47E-DA79F2D4D836}.dat

          • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{CBD6E581-2D3D-11EF-B47E-DA79F2D4D836}.dat
          • Size 5KB
          • SHA256 cbf32ec564471667f666f4d403f0766ecfb5ae24b3dd2c2fe243d604d4c43f6c
          • MD5 SHA1 SHA512 SSDEEP

          Cab6616.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\Cab6616.tmp
          • Size 70KB
          • SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
          • MD5 SHA1 SHA512 SSDEEP

          Tar66C5.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\Tar66C5.tmp
          • Size 181KB
          • SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
          • MD5 SHA1 SHA512 SSDEEP

          hrl4CAA.tmp

          • Path \Users\Admin\AppData\Local\Temp\hrl4CAA.tmp
          • Size 20KB
          • SHA256 dc856e59feb72d1dc73350eb2af43a15d743b6e8b0755393b5b7ae9f14e2bfde
          • MD5 SHA1 SHA512 SSDEEP

          hra33.dll

          • Path \Windows\SysWOW64\hra33.dll
          • Size 8KB
          • SHA256 ee9d05b1603feefabd01a8aa763baba78a14e2302682172f040d55d284ef6a16
          • MD5 SHA1 SHA512 SSDEEP

          rundll32mgr.exe

          • Path \Windows\SysWOW64\rundll32mgr.exe
          • Size 105KB
          • SHA256 54282ec29d4993ed6e9972122cfbb70bba4898a21d527bd9e72a166d7ec2fdc0
          • MD5 SHA1 SHA512 SSDEEP

          memory/2248-910-0x0000000000400000-0x0000000000410000-memory.dmp

          memory/2248-472-0x0000000000400000-0x0000000000410000-memory.dmp

          memory/2248-475-0x0000000000400000-0x0000000000410000-memory.dmp

          memory/2248-477-0x0000000000400000-0x0000000000410000-memory.dmp

          memory/2932-21-0x0000000000400000-0x0000000000410000-memory.dmp

          memory/2932-1-0x0000000010000000-0x0000000010026000-memory.dmp

          memory/2932-3-0x0000000000130000-0x000000000018B000-memory.dmp

          memory/2932-20-0x0000000000400000-0x0000000000410000-memory.dmp

          memory/3008-27-0x00000000003C0000-0x00000000003C1000-memory.dmp

          memory/3008-23-0x00000000001B0000-0x00000000001B1000-memory.dmp

          memory/3008-26-0x0000000000400000-0x000000000045B000-memory.dmp

          memory/3008-24-0x00000000003B0000-0x00000000003B1000-memory.dmp

          memory/3008-25-0x0000000000400000-0x000000000045B000-memory.dmp

          memory/3008-28-0x0000000000400000-0x000000000045B000-memory.dmp

          memory/3008-43-0x0000000000400000-0x000000000045B000-memory.dmp

          memory/3044-22-0x0000000000400000-0x0000000000410000-memory.dmp