Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-07-2023 05:21

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 4 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 43 IoCs
  • Executes dropped EXE 5 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

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

  • Drops file in System32 directory 3 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 58 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:5060
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\libcrypto-3.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4964
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe
        3⤵
          PID:64
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe
          3⤵
          • Blocklisted process makes network request
          PID:4100
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe
          3⤵
            PID:3944
          • C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe
            C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe
            3⤵
            • Executes dropped EXE
            PID:1828
          • C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe
            C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe
            3⤵
            • Executes dropped EXE
            PID:2860
          • C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe
            C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe
            3⤵
            • Executes dropped EXE
            PID:4184
          • C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe
            C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe
            3⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            PID:1980
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1980 -s 392
              4⤵
              • Program crash
              PID:1180
          • C:\Windows\SysWOW64\mecxzcaasxzcxcassascxcxcx23667.exe
            C:\Windows\SysWOW64\mecxzcaasxzcxcassascxcxcx23667.exe
            3⤵
            • Executes dropped EXE
            • Enumerates connected drives
            • Checks processor information in registry
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of SetWindowsHookEx
            PID:412
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe
            3⤵
              PID:2040
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 1980 -ip 1980
          1⤵
            PID:2344

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\mecxzcaasxzcxcassascxcxcx23667.exe

            Filesize

            60KB

            MD5

            889b99c52a60dd49227c5e485a016679

            SHA1

            8fa889e456aa646a4d0a4349977430ce5fa5e2d7

            SHA256

            6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

            SHA512

            08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

          • C:\Windows\SysWOW64\mecxzcaasxzcxcassascxcxcx23667.exe

            Filesize

            60KB

            MD5

            889b99c52a60dd49227c5e485a016679

            SHA1

            8fa889e456aa646a4d0a4349977430ce5fa5e2d7

            SHA256

            6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

            SHA512

            08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

          • C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe

            Filesize

            60KB

            MD5

            889b99c52a60dd49227c5e485a016679

            SHA1

            8fa889e456aa646a4d0a4349977430ce5fa5e2d7

            SHA256

            6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

            SHA512

            08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

          • C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe

            Filesize

            60KB

            MD5

            889b99c52a60dd49227c5e485a016679

            SHA1

            8fa889e456aa646a4d0a4349977430ce5fa5e2d7

            SHA256

            6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

            SHA512

            08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

          • C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe

            Filesize

            60KB

            MD5

            889b99c52a60dd49227c5e485a016679

            SHA1

            8fa889e456aa646a4d0a4349977430ce5fa5e2d7

            SHA256

            6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

            SHA512

            08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

          • C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe

            Filesize

            60KB

            MD5

            889b99c52a60dd49227c5e485a016679

            SHA1

            8fa889e456aa646a4d0a4349977430ce5fa5e2d7

            SHA256

            6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

            SHA512

            08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

          • C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe

            Filesize

            60KB

            MD5

            889b99c52a60dd49227c5e485a016679

            SHA1

            8fa889e456aa646a4d0a4349977430ce5fa5e2d7

            SHA256

            6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

            SHA512

            08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

          • memory/412-197-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-185-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-210-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-209-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-208-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-207-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-206-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-205-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-204-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-167-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-168-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-169-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-170-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-171-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-203-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-174-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-175-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-177-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-202-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-184-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-186-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-201-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-200-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-191-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-192-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-193-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-194-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-195-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-196-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-199-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/412-198-0x0000000000400000-0x0000000000449000-memory.dmp

            Filesize

            292KB

          • memory/1980-165-0x0000000000400000-0x0000000000426000-memory.dmp

            Filesize

            152KB

          • memory/1980-161-0x0000000000400000-0x0000000000426000-memory.dmp

            Filesize

            152KB

          • memory/1980-162-0x0000000000400000-0x0000000000426000-memory.dmp

            Filesize

            152KB

          • memory/1980-160-0x0000000000400000-0x0000000000426000-memory.dmp

            Filesize

            152KB

          • memory/1980-159-0x0000000000400000-0x0000000000426000-memory.dmp

            Filesize

            152KB

          • memory/4100-148-0x0000000010000000-0x0000000010015000-memory.dmp

            Filesize

            84KB

          • memory/4100-136-0x0000000000400000-0x0000000000460000-memory.dmp

            Filesize

            384KB

          • memory/4100-137-0x0000000000400000-0x0000000000460000-memory.dmp

            Filesize

            384KB

          • memory/4100-138-0x0000000000400000-0x0000000000460000-memory.dmp

            Filesize

            384KB

          • memory/4100-141-0x0000000000400000-0x0000000000460000-memory.dmp

            Filesize

            384KB

          • memory/4964-134-0x0000000000A90000-0x0000000000A98000-memory.dmp

            Filesize

            32KB

          • memory/4964-187-0x0000000010000000-0x0000000011000000-memory.dmp

            Filesize

            16.0MB