Analysis

  • max time kernel
    139s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20230703-en
  • resource tags

    arch:x64arch:x86image:win7-20230703-enlocale:en-usos:windows7-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 52 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 7 IoCs
  • Enumerates connected drives 3 TTPs 23 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 4 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:2952
    • 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:3024
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe
        3⤵
          PID:2880
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe
          3⤵
            PID:2908
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe
            3⤵
            • Blocklisted process makes network request
            PID:1728
          • C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe
            C:\Windows\SysWOW64\secvbnmcxccvxcxcsdsdsxcxczsasadrunshellcode86000.exe
            3⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1932
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1932 -s 132
              4⤵
              • Loads dropped DLL
              • Program crash
              PID:2780
          • 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:2312
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe
            3⤵
              PID:1720

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        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\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/1728-63-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/1728-67-0x0000000010000000-0x0000000010015000-memory.dmp

          Filesize

          84KB

        • memory/1728-66-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/1728-58-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/1728-61-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/1728-64-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/1728-59-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/1728-57-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/1932-75-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/1932-73-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/1932-82-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/1932-81-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/1932-79-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/1932-77-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/1932-85-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/1932-74-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB

        • memory/2312-110-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-102-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-95-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-126-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-134-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-104-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-105-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2312-94-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-108-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-109-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-98-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-96-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-100-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-127-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-133-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-129-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-130-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-131-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/2312-132-0x0000000000400000-0x0000000000449000-memory.dmp

          Filesize

          292KB

        • memory/3024-56-0x00000000001B0000-0x00000000001B8000-memory.dmp

          Filesize

          32KB

        • memory/3024-122-0x0000000010000000-0x0000000011000000-memory.dmp

          Filesize

          16.0MB