Analysis

  • max time kernel
    138s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20230621-en
  • resource tags

    arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
  • submitted
    03-07-2023 02:39

General

  • Target

    libcrypto-3.dll

  • Size

    102.3MB

  • MD5

    4bcb44a845417cafc7d9b26fe931ac3a

  • SHA1

    d47e4b9d732585e28ce229f7ef9bdd941fabea6e

  • SHA256

    dc5c197f147eeb7dc774653b80b1fc13a0bc1221eb0e942621bd1631ca2d0573

  • SHA512

    5a6e0a75ff7546a2f51c2dc57eb1dc18514439037d05d7f078a22793b4972d09aa3e77eef9edd17850671bcbb1359b8bf8ffd55d7765db20dd8ddde9d4d852eb

  • SSDEEP

    24576:7Yqgr+TBzrabXb8zsMbQrjQzeBa3q0LZdU0B9IwiPr6VoVVD83HNUJyPiOKLA:7ztzsM5n62U0BG76VoPuHNMy6

Malware Config

Signatures

  • Blackmoon, KrBanker

    Blackmoon also known as KrBanker is banking trojan first discovered in early 2014.

  • Detect Blackmoon payload 3 IoCs
  • Gh0st RAT payload 1 IoCs
  • Gh0strat

    Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

  • Blocklisted process makes network request 44 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 7 IoCs
  • Drops file in System32 directory 3 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 63 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\libcrypto-3.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1324
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\libcrypto-3.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1680
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe
        3⤵
        • Blocklisted process makes network request
        PID:1668
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe
        3⤵
          PID:648
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe
          3⤵
            PID:1732
          • C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe
            C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe
            3⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:544
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 544 -s 132
              4⤵
              • Loads dropped DLL
              • Program crash
              PID:1820
          • C:\Windows\SysWOW64\mecxzcaasxzcxcassascxcxcx23667.exe
            C:\Windows\SysWOW64\mecxzcaasxzcxcassascxcxcx23667.exe
            3⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            PID:428
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe
            3⤵
              PID:1096

        Network

        MITRE ATT&CK Matrix

        Replay Monitor

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        Downloads

        • C:\Windows\SysWOW64\mecxzcaasxzcxcassascxcxcx23667.exe

          Filesize

          43KB

          MD5

          51138beea3e2c21ec44d0932c71762a8

          SHA1

          8939cf35447b22dd2c6e6f443446acc1bf986d58

          SHA256

          5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

          SHA512

          794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

        • C:\Windows\SysWOW64\mecxzcaasxzcxcassascxcxcx23667.exe

          Filesize

          43KB

          MD5

          51138beea3e2c21ec44d0932c71762a8

          SHA1

          8939cf35447b22dd2c6e6f443446acc1bf986d58

          SHA256

          5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

          SHA512

          794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

        • C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe

          Filesize

          43KB

          MD5

          51138beea3e2c21ec44d0932c71762a8

          SHA1

          8939cf35447b22dd2c6e6f443446acc1bf986d58

          SHA256

          5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

          SHA512

          794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

        • \Windows\SysWOW64\mecxzcaasxzcxcassascxcxcx23667.exe

          Filesize

          43KB

          MD5

          51138beea3e2c21ec44d0932c71762a8

          SHA1

          8939cf35447b22dd2c6e6f443446acc1bf986d58

          SHA256

          5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

          SHA512

          794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

        • \Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe

          Filesize

          43KB

          MD5

          51138beea3e2c21ec44d0932c71762a8

          SHA1

          8939cf35447b22dd2c6e6f443446acc1bf986d58

          SHA256

          5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

          SHA512

          794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

        • \Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe

          Filesize

          43KB

          MD5

          51138beea3e2c21ec44d0932c71762a8

          SHA1

          8939cf35447b22dd2c6e6f443446acc1bf986d58

          SHA256

          5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

          SHA512

          794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

        • \Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe

          Filesize

          43KB

          MD5

          51138beea3e2c21ec44d0932c71762a8

          SHA1

          8939cf35447b22dd2c6e6f443446acc1bf986d58

          SHA256

          5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

          SHA512

          794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

        • \Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe

          Filesize

          43KB

          MD5

          51138beea3e2c21ec44d0932c71762a8

          SHA1

          8939cf35447b22dd2c6e6f443446acc1bf986d58

          SHA256

          5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

          SHA512

          794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

        • \Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe

          Filesize

          43KB

          MD5

          51138beea3e2c21ec44d0932c71762a8

          SHA1

          8939cf35447b22dd2c6e6f443446acc1bf986d58

          SHA256

          5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

          SHA512

          794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

        • \Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe

          Filesize

          43KB

          MD5

          51138beea3e2c21ec44d0932c71762a8

          SHA1

          8939cf35447b22dd2c6e6f443446acc1bf986d58

          SHA256

          5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

          SHA512

          794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

        • memory/428-120-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/428-121-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/428-130-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/428-131-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/428-128-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/428-126-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/428-124-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/428-122-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/544-107-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/544-96-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/544-97-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/544-98-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/544-100-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/544-111-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/544-102-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/544-104-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/1668-63-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/1668-58-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/1668-59-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/1668-61-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/1668-64-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/1668-66-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/1668-79-0x0000000010000000-0x0000000010015000-memory.dmp

          Filesize

          84KB

        • memory/1668-57-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/1680-56-0x00000000001F0000-0x00000000001F8000-memory.dmp

          Filesize

          32KB

        • memory/1732-90-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB