Analysis

  • max time kernel
    150s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    17-08-2022 07:12

General

  • Target

    2bb1aa0fd3ba10b9da58570bdf755402.exe

  • Size

    406KB

  • MD5

    2bb1aa0fd3ba10b9da58570bdf755402

  • SHA1

    a31cb26e9cd88c0a26b576aa4f185ed5f5135fb4

  • SHA256

    98d37790e570afd49b7a00192019f6c9e7c84e96069da4daa1b64a6cc88695a8

  • SHA512

    2cba6e41ad6978ea4914e52823d1af6c0372933eba71bc7e2ad4fd732a8c4ed905418ec0f7507835bacc81121e9784703239a2ce429406e61fd3abfea4901356

Malware Config

Signatures

  • BluStealer

    A Modular information stealer written in Visual Basic.

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 4 IoCs
  • Executes dropped EXE 6 IoCs
  • Modifies Installed Components in the registry 2 TTPs 8 IoCs
  • Loads dropped DLL 12 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 15 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2bb1aa0fd3ba10b9da58570bdf755402.exe
    "C:\Users\Admin\AppData\Local\Temp\2bb1aa0fd3ba10b9da58570bdf755402.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:864
    • \??\c:\users\admin\appdata\local\temp\2bb1aa0fd3ba10b9da58570bdf755402.exe 
      c:\users\admin\appdata\local\temp\2bb1aa0fd3ba10b9da58570bdf755402.exe 
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1000
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        3⤵
        • Accesses Microsoft Outlook profiles
        • Checks processor information in registry
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:2024
    • C:\Users\Admin\AppData\Local\icsys.icn.exe
      C:\Users\Admin\AppData\Local\icsys.icn.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1104
      • \??\c:\windows\system\explorer.exe
        c:\windows\system\explorer.exe
        3⤵
        • Modifies WinLogon for persistence
        • Modifies visiblity of hidden/system files in Explorer
        • Executes dropped EXE
        • Modifies Installed Components in the registry
        • Loads dropped DLL
        • Adds Run key to start application
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1176
        • \??\c:\windows\system\spoolsv.exe
          c:\windows\system\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in Windows directory
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:588
          • \??\c:\windows\system\svchost.exe
            c:\windows\system\svchost.exe
            5⤵
            • Modifies WinLogon for persistence
            • Modifies visiblity of hidden/system files in Explorer
            • Executes dropped EXE
            • Modifies Installed Components in the registry
            • Loads dropped DLL
            • Adds Run key to start application
            • Drops file in Windows directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1572
            • \??\c:\windows\system\spoolsv.exe
              c:\windows\system\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:1708
            • C:\Windows\SysWOW64\at.exe
              at 09:14 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
                PID:2000
              • C:\Windows\SysWOW64\at.exe
                at 09:15 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                6⤵
                  PID:1988
                • C:\Windows\SysWOW64\at.exe
                  at 09:16 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                  6⤵
                    PID:692

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\2bb1aa0fd3ba10b9da58570bdf755402.exe 

          Filesize

          132KB

          MD5

          f7e5a5c100fcf5a248dfe0424bc5bbdc

          SHA1

          05fab29b3f901ea56ebc0d5e240aa747aa44ee4f

          SHA256

          fafa8057f024c7a3c30e48b63d05d712e7de1f2f38f592a03cabbe8917942a89

          SHA512

          048b661425a63033980b1253bd0e8e24de0eb6ea230e24c46eec965371cd74f7ebd27ae004f6ee006abb48879fa3258ff6d4d049380ea8da57cda5953fb91bf2

        • C:\Users\Admin\AppData\Local\icsys.icn.exe

          Filesize

          274KB

          MD5

          ec13047c64390d0e3973b2515dd18267

          SHA1

          32ce693670495b197ff668810c0fb6f9bcf8d5be

          SHA256

          2bd1d41b13e8918710db1c5db5f75c45ec8e4f925fc76cc5705d7c9feecebc11

          SHA512

          123d37d434cfd32a6105fb0782dc3706355911f00e71496a28be57874e9c7025a44219ec91d3d324436953f46df22dfdae3ccb278a5e1bd87cb73e2089f1c0a6

        • C:\Users\Admin\AppData\Roaming\mrsys.exe

          Filesize

          274KB

          MD5

          be24c233b45326d0397db9b9563b44b3

          SHA1

          c9709b81a8a51186dcd8ef6382b36264ca8b27a9

          SHA256

          644b40c2ee72b353428f9fa6ef70bf6cfabc62aa2dcc823d8d08c11515a2f87e

          SHA512

          c22f13423d4d30f0018e26b778d8750b41b5f42bee1a67ec80a35a8a77765e41c2cee8603d6fb9bfd4ca987691e2b42ec15fede44cda001ff0512fc16b54f769

        • C:\Windows\system\explorer.exe

          Filesize

          274KB

          MD5

          3e8e8de6a320118a3a744c71e7312d8b

          SHA1

          f222e44a42a3e5d62431fd6a9907d785b86e621d

          SHA256

          778e1150e061907358f8ecc7309cc9eb6129980127a7fe7678a93c6504bafc3f

          SHA512

          6b6c885ea94d5296b42ab80dc542a7c9a414553ffb79d7ec1c766b3efc0136927e9be533de87297c937f9c1f08bf6ee4f373a71f0c5496142e15d0ea5bd2c2b3

        • C:\Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          de9cab0db6f8c4db64a63e211f7e5d5f

          SHA1

          ee09c3804ef4c92b5927e5d0a755465b68ac7a0b

          SHA256

          ca732f79e066a9c950f35dd9f4c3d7cdef3b4662c434d5679690b1c92b9a1356

          SHA512

          338e3054abde7fd550a6b71157311c5cc1fa96747aec687c9af72a060891ab495a6b7638651ac99783a6161d902217dcc165c85345c50def3397b85f2fa6db78

        • C:\Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          de9cab0db6f8c4db64a63e211f7e5d5f

          SHA1

          ee09c3804ef4c92b5927e5d0a755465b68ac7a0b

          SHA256

          ca732f79e066a9c950f35dd9f4c3d7cdef3b4662c434d5679690b1c92b9a1356

          SHA512

          338e3054abde7fd550a6b71157311c5cc1fa96747aec687c9af72a060891ab495a6b7638651ac99783a6161d902217dcc165c85345c50def3397b85f2fa6db78

        • C:\Windows\system\svchost.exe

          Filesize

          274KB

          MD5

          0b050ada696b428dffe419d745070e03

          SHA1

          0ef7f4f5acb4a803df8b6f485b484d6990dda876

          SHA256

          015170259663e4ad3a7f0dd8f47357fff125e0ef553d641a2dd6d69199259073

          SHA512

          63f7efd05390206aba68e11c10a4fd51c24b571cebbcc6eff5f191a3da8628ad59bca92e755fb3bc6f9b8e2efd6e8f8a3e56e714173369e9bae519d26f3e2c4b

        • \??\c:\users\admin\appdata\local\icsys.icn.exe

          Filesize

          274KB

          MD5

          ec13047c64390d0e3973b2515dd18267

          SHA1

          32ce693670495b197ff668810c0fb6f9bcf8d5be

          SHA256

          2bd1d41b13e8918710db1c5db5f75c45ec8e4f925fc76cc5705d7c9feecebc11

          SHA512

          123d37d434cfd32a6105fb0782dc3706355911f00e71496a28be57874e9c7025a44219ec91d3d324436953f46df22dfdae3ccb278a5e1bd87cb73e2089f1c0a6

        • \??\c:\windows\system\explorer.exe

          Filesize

          274KB

          MD5

          3e8e8de6a320118a3a744c71e7312d8b

          SHA1

          f222e44a42a3e5d62431fd6a9907d785b86e621d

          SHA256

          778e1150e061907358f8ecc7309cc9eb6129980127a7fe7678a93c6504bafc3f

          SHA512

          6b6c885ea94d5296b42ab80dc542a7c9a414553ffb79d7ec1c766b3efc0136927e9be533de87297c937f9c1f08bf6ee4f373a71f0c5496142e15d0ea5bd2c2b3

        • \??\c:\windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          de9cab0db6f8c4db64a63e211f7e5d5f

          SHA1

          ee09c3804ef4c92b5927e5d0a755465b68ac7a0b

          SHA256

          ca732f79e066a9c950f35dd9f4c3d7cdef3b4662c434d5679690b1c92b9a1356

          SHA512

          338e3054abde7fd550a6b71157311c5cc1fa96747aec687c9af72a060891ab495a6b7638651ac99783a6161d902217dcc165c85345c50def3397b85f2fa6db78

        • \??\c:\windows\system\svchost.exe

          Filesize

          274KB

          MD5

          0b050ada696b428dffe419d745070e03

          SHA1

          0ef7f4f5acb4a803df8b6f485b484d6990dda876

          SHA256

          015170259663e4ad3a7f0dd8f47357fff125e0ef553d641a2dd6d69199259073

          SHA512

          63f7efd05390206aba68e11c10a4fd51c24b571cebbcc6eff5f191a3da8628ad59bca92e755fb3bc6f9b8e2efd6e8f8a3e56e714173369e9bae519d26f3e2c4b

        • \Users\Admin\AppData\Local\Temp\2bb1aa0fd3ba10b9da58570bdf755402.exe 

          Filesize

          132KB

          MD5

          f7e5a5c100fcf5a248dfe0424bc5bbdc

          SHA1

          05fab29b3f901ea56ebc0d5e240aa747aa44ee4f

          SHA256

          fafa8057f024c7a3c30e48b63d05d712e7de1f2f38f592a03cabbe8917942a89

          SHA512

          048b661425a63033980b1253bd0e8e24de0eb6ea230e24c46eec965371cd74f7ebd27ae004f6ee006abb48879fa3258ff6d4d049380ea8da57cda5953fb91bf2

        • \Users\Admin\AppData\Local\Temp\2bb1aa0fd3ba10b9da58570bdf755402.exe 

          Filesize

          132KB

          MD5

          f7e5a5c100fcf5a248dfe0424bc5bbdc

          SHA1

          05fab29b3f901ea56ebc0d5e240aa747aa44ee4f

          SHA256

          fafa8057f024c7a3c30e48b63d05d712e7de1f2f38f592a03cabbe8917942a89

          SHA512

          048b661425a63033980b1253bd0e8e24de0eb6ea230e24c46eec965371cd74f7ebd27ae004f6ee006abb48879fa3258ff6d4d049380ea8da57cda5953fb91bf2

        • \Users\Admin\AppData\Local\icsys.icn.exe

          Filesize

          274KB

          MD5

          ec13047c64390d0e3973b2515dd18267

          SHA1

          32ce693670495b197ff668810c0fb6f9bcf8d5be

          SHA256

          2bd1d41b13e8918710db1c5db5f75c45ec8e4f925fc76cc5705d7c9feecebc11

          SHA512

          123d37d434cfd32a6105fb0782dc3706355911f00e71496a28be57874e9c7025a44219ec91d3d324436953f46df22dfdae3ccb278a5e1bd87cb73e2089f1c0a6

        • \Users\Admin\AppData\Local\icsys.icn.exe

          Filesize

          274KB

          MD5

          ec13047c64390d0e3973b2515dd18267

          SHA1

          32ce693670495b197ff668810c0fb6f9bcf8d5be

          SHA256

          2bd1d41b13e8918710db1c5db5f75c45ec8e4f925fc76cc5705d7c9feecebc11

          SHA512

          123d37d434cfd32a6105fb0782dc3706355911f00e71496a28be57874e9c7025a44219ec91d3d324436953f46df22dfdae3ccb278a5e1bd87cb73e2089f1c0a6

        • \Windows\system\explorer.exe

          Filesize

          274KB

          MD5

          3e8e8de6a320118a3a744c71e7312d8b

          SHA1

          f222e44a42a3e5d62431fd6a9907d785b86e621d

          SHA256

          778e1150e061907358f8ecc7309cc9eb6129980127a7fe7678a93c6504bafc3f

          SHA512

          6b6c885ea94d5296b42ab80dc542a7c9a414553ffb79d7ec1c766b3efc0136927e9be533de87297c937f9c1f08bf6ee4f373a71f0c5496142e15d0ea5bd2c2b3

        • \Windows\system\explorer.exe

          Filesize

          274KB

          MD5

          3e8e8de6a320118a3a744c71e7312d8b

          SHA1

          f222e44a42a3e5d62431fd6a9907d785b86e621d

          SHA256

          778e1150e061907358f8ecc7309cc9eb6129980127a7fe7678a93c6504bafc3f

          SHA512

          6b6c885ea94d5296b42ab80dc542a7c9a414553ffb79d7ec1c766b3efc0136927e9be533de87297c937f9c1f08bf6ee4f373a71f0c5496142e15d0ea5bd2c2b3

        • \Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          de9cab0db6f8c4db64a63e211f7e5d5f

          SHA1

          ee09c3804ef4c92b5927e5d0a755465b68ac7a0b

          SHA256

          ca732f79e066a9c950f35dd9f4c3d7cdef3b4662c434d5679690b1c92b9a1356

          SHA512

          338e3054abde7fd550a6b71157311c5cc1fa96747aec687c9af72a060891ab495a6b7638651ac99783a6161d902217dcc165c85345c50def3397b85f2fa6db78

        • \Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          de9cab0db6f8c4db64a63e211f7e5d5f

          SHA1

          ee09c3804ef4c92b5927e5d0a755465b68ac7a0b

          SHA256

          ca732f79e066a9c950f35dd9f4c3d7cdef3b4662c434d5679690b1c92b9a1356

          SHA512

          338e3054abde7fd550a6b71157311c5cc1fa96747aec687c9af72a060891ab495a6b7638651ac99783a6161d902217dcc165c85345c50def3397b85f2fa6db78

        • \Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          de9cab0db6f8c4db64a63e211f7e5d5f

          SHA1

          ee09c3804ef4c92b5927e5d0a755465b68ac7a0b

          SHA256

          ca732f79e066a9c950f35dd9f4c3d7cdef3b4662c434d5679690b1c92b9a1356

          SHA512

          338e3054abde7fd550a6b71157311c5cc1fa96747aec687c9af72a060891ab495a6b7638651ac99783a6161d902217dcc165c85345c50def3397b85f2fa6db78

        • \Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          de9cab0db6f8c4db64a63e211f7e5d5f

          SHA1

          ee09c3804ef4c92b5927e5d0a755465b68ac7a0b

          SHA256

          ca732f79e066a9c950f35dd9f4c3d7cdef3b4662c434d5679690b1c92b9a1356

          SHA512

          338e3054abde7fd550a6b71157311c5cc1fa96747aec687c9af72a060891ab495a6b7638651ac99783a6161d902217dcc165c85345c50def3397b85f2fa6db78

        • \Windows\system\svchost.exe

          Filesize

          274KB

          MD5

          0b050ada696b428dffe419d745070e03

          SHA1

          0ef7f4f5acb4a803df8b6f485b484d6990dda876

          SHA256

          015170259663e4ad3a7f0dd8f47357fff125e0ef553d641a2dd6d69199259073

          SHA512

          63f7efd05390206aba68e11c10a4fd51c24b571cebbcc6eff5f191a3da8628ad59bca92e755fb3bc6f9b8e2efd6e8f8a3e56e714173369e9bae519d26f3e2c4b

        • \Windows\system\svchost.exe

          Filesize

          274KB

          MD5

          0b050ada696b428dffe419d745070e03

          SHA1

          0ef7f4f5acb4a803df8b6f485b484d6990dda876

          SHA256

          015170259663e4ad3a7f0dd8f47357fff125e0ef553d641a2dd6d69199259073

          SHA512

          63f7efd05390206aba68e11c10a4fd51c24b571cebbcc6eff5f191a3da8628ad59bca92e755fb3bc6f9b8e2efd6e8f8a3e56e714173369e9bae519d26f3e2c4b

        • memory/588-120-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/588-125-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/864-126-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/864-115-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/864-116-0x0000000002510000-0x000000000254E000-memory.dmp

          Filesize

          248KB

        • memory/864-57-0x0000000076321000-0x0000000076323000-memory.dmp

          Filesize

          8KB

        • memory/1104-118-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1104-127-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1176-135-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1176-119-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1572-136-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1572-122-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1708-124-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1708-123-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/2024-76-0x00000000000E0000-0x00000000000FA000-memory.dmp

          Filesize

          104KB

        • memory/2024-73-0x00000000000E0000-0x00000000000FA000-memory.dmp

          Filesize

          104KB

        • memory/2024-67-0x00000000000E0000-0x00000000000FA000-memory.dmp

          Filesize

          104KB

        • memory/2024-65-0x00000000000E0000-0x00000000000FA000-memory.dmp

          Filesize

          104KB