Analysis

  • max time kernel
    151s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220722-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-08-2022 06:54

General

  • Target

    45061e4da841c2587d0890148705a142.exe

  • Size

    406KB

  • MD5

    45061e4da841c2587d0890148705a142

  • SHA1

    eb68218c1d70f3ba00f8190c8171ad1cfa2fb42a

  • SHA256

    6731f235ff78e22e5a0f1503542926bb707a95251b8cbd22c56fbd7fc5a8cbbf

  • SHA512

    01a561bbb8418364078e4751e69a5d61075220cfbaa7582a0b664ccc1fd45b6dd1accc4ef3dd2b2e6b0dc1a99d9e5f5605ee453eb6c1010c28a189109a51c294

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 1 IoCs
  • Executes dropped EXE 6 IoCs
  • Modifies Installed Components in the registry 2 TTPs 8 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 32 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\45061e4da841c2587d0890148705a142.exe
    "C:\Users\Admin\AppData\Local\Temp\45061e4da841c2587d0890148705a142.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5072
    • \??\c:\users\admin\appdata\local\temp\45061e4da841c2587d0890148705a142.exe 
      c:\users\admin\appdata\local\temp\45061e4da841c2587d0890148705a142.exe 
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5020
      • 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:4244
    • C:\Users\Admin\AppData\Local\icsys.icn.exe
      C:\Users\Admin\AppData\Local\icsys.icn.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4344
      • \??\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
        • 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:4124
        • \??\c:\windows\system\spoolsv.exe
          c:\windows\system\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2284
          • \??\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
            • 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:3828
            • \??\c:\windows\system\spoolsv.exe
              c:\windows\system\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:3732
            • C:\Windows\SysWOW64\at.exe
              at 08:56 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
                PID:4800
              • C:\Windows\SysWOW64\at.exe
                at 08:57 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                6⤵
                  PID:1872
                • C:\Windows\SysWOW64\at.exe
                  at 08:58 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                  6⤵
                    PID:4924

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\45061e4da841c2587d0890148705a142.exe 

          Filesize

          132KB

          MD5

          bee47439c4960e2728594ece9ad95ba7

          SHA1

          43f4b6f607dec5bec2a33e2fb4148c38de832490

          SHA256

          8a1902d9c0dbe388b28ef5a9c8ec4c0f1802fc6ccd43471ea337dcb3d71c81d4

          SHA512

          ad84d419d61b63e36a6766ba90773b39270bf9c8e72373b52c1979097e73110f749fad0cfed5c4f233304ad0af4b6e753666911ff7db83475c16c38976c46382

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

          Filesize

          274KB

          MD5

          4223968da579570e05813854a134397b

          SHA1

          07bdaa69105cae6467337d965eb968b6765fe28e

          SHA256

          85ce1f5747ce26adf8191236668b87796ed45b1e15a9b87fa8a2f3c80b9b65fc

          SHA512

          c62411e35db1940412bf5d8132c1a9a4346ec179b23ec57945be7ea64c5640850cfff94b122ca980293653b270a0c968c48e0b27af0af0bd5bfe177ed72e6beb

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

          Filesize

          274KB

          MD5

          4223968da579570e05813854a134397b

          SHA1

          07bdaa69105cae6467337d965eb968b6765fe28e

          SHA256

          85ce1f5747ce26adf8191236668b87796ed45b1e15a9b87fa8a2f3c80b9b65fc

          SHA512

          c62411e35db1940412bf5d8132c1a9a4346ec179b23ec57945be7ea64c5640850cfff94b122ca980293653b270a0c968c48e0b27af0af0bd5bfe177ed72e6beb

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

          Filesize

          274KB

          MD5

          58f87a78ca72b1dd89d086867302dc2e

          SHA1

          d1c3259e374c1b6dda612ead5b5c82018a10f31d

          SHA256

          a3b34c262d1071450c79ecb9cdc254dba49a8095d898aae02f8dc609ce82b435

          SHA512

          06c0a508d8c1d964d2ca0e2ee216425f5686042a88c7d455eb470b3bc57e504305458554a840186bbc58f47cec60f3d23d59e9e7b13d0cdd82ee47036f1d8d6b

        • C:\Windows\System\explorer.exe

          Filesize

          274KB

          MD5

          431c365527ae0d2494570393abfc88a4

          SHA1

          a73df7ab559ec39fa8bd8f55272d9cd04f1ff8c2

          SHA256

          ccdbe9663003251963a1c961ba782a3104872516e70390a3805ccc719628dfc4

          SHA512

          67bcbffa7bafdd302a2f9aa5fe28bd4b4b5783b6875c1db4268d82feba6c903ca80f16fa4dcb6318233c1af0b81ca41c8d44f9fdf1863629686c70ccda04cb78

        • C:\Windows\System\spoolsv.exe

          Filesize

          274KB

          MD5

          31b3d56c0d304cf1344a4216102a21ee

          SHA1

          dc38c5542c3f02a11253231f68ccd4ce6811ffda

          SHA256

          0654d23d2b91f7fa7a41781ea738a31a9e9cb0d36811ab48e47abad52d09e2d3

          SHA512

          692e1077a7fb01cfb284964ce86738a601b07bbd5645072371007b48bc80851d80b8a4485112b955131169a015ce94411f47e413f402ed13d39a9109b6b213ee

        • C:\Windows\System\spoolsv.exe

          Filesize

          274KB

          MD5

          31b3d56c0d304cf1344a4216102a21ee

          SHA1

          dc38c5542c3f02a11253231f68ccd4ce6811ffda

          SHA256

          0654d23d2b91f7fa7a41781ea738a31a9e9cb0d36811ab48e47abad52d09e2d3

          SHA512

          692e1077a7fb01cfb284964ce86738a601b07bbd5645072371007b48bc80851d80b8a4485112b955131169a015ce94411f47e413f402ed13d39a9109b6b213ee

        • C:\Windows\System\svchost.exe

          Filesize

          274KB

          MD5

          715639fe4d4c19ed9fc7597787367716

          SHA1

          fd9cf9b00b4e83b1f954664107f1c75ed09584f8

          SHA256

          5514ab8d072282bed9faddc7d11dd3fbd0b73a524bab03971159be304df7451f

          SHA512

          cbb106d6bd2e26ed38e7cf7da4794f6c4193b1310fbb74fd8549ee7f92d49613b7b3a5dd027eb81f67259a91e14342d92f835d1b58c723cfc1b261b83e432cb4

        • \??\c:\users\admin\appdata\local\temp\45061e4da841c2587d0890148705a142.exe 

          Filesize

          132KB

          MD5

          bee47439c4960e2728594ece9ad95ba7

          SHA1

          43f4b6f607dec5bec2a33e2fb4148c38de832490

          SHA256

          8a1902d9c0dbe388b28ef5a9c8ec4c0f1802fc6ccd43471ea337dcb3d71c81d4

          SHA512

          ad84d419d61b63e36a6766ba90773b39270bf9c8e72373b52c1979097e73110f749fad0cfed5c4f233304ad0af4b6e753666911ff7db83475c16c38976c46382

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

          Filesize

          274KB

          MD5

          431c365527ae0d2494570393abfc88a4

          SHA1

          a73df7ab559ec39fa8bd8f55272d9cd04f1ff8c2

          SHA256

          ccdbe9663003251963a1c961ba782a3104872516e70390a3805ccc719628dfc4

          SHA512

          67bcbffa7bafdd302a2f9aa5fe28bd4b4b5783b6875c1db4268d82feba6c903ca80f16fa4dcb6318233c1af0b81ca41c8d44f9fdf1863629686c70ccda04cb78

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

          Filesize

          274KB

          MD5

          31b3d56c0d304cf1344a4216102a21ee

          SHA1

          dc38c5542c3f02a11253231f68ccd4ce6811ffda

          SHA256

          0654d23d2b91f7fa7a41781ea738a31a9e9cb0d36811ab48e47abad52d09e2d3

          SHA512

          692e1077a7fb01cfb284964ce86738a601b07bbd5645072371007b48bc80851d80b8a4485112b955131169a015ce94411f47e413f402ed13d39a9109b6b213ee

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

          Filesize

          274KB

          MD5

          715639fe4d4c19ed9fc7597787367716

          SHA1

          fd9cf9b00b4e83b1f954664107f1c75ed09584f8

          SHA256

          5514ab8d072282bed9faddc7d11dd3fbd0b73a524bab03971159be304df7451f

          SHA512

          cbb106d6bd2e26ed38e7cf7da4794f6c4193b1310fbb74fd8549ee7f92d49613b7b3a5dd027eb81f67259a91e14342d92f835d1b58c723cfc1b261b83e432cb4

        • memory/2284-178-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/2284-163-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/3732-175-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/3828-182-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/3828-186-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/4124-162-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/4124-185-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/4244-183-0x00000000058B0000-0x000000000594C000-memory.dmp

          Filesize

          624KB

        • memory/4244-176-0x0000000004F90000-0x0000000004FF6000-memory.dmp

          Filesize

          408KB

        • memory/4244-142-0x00000000009A0000-0x00000000009BA000-memory.dmp

          Filesize

          104KB

        • memory/4344-160-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/4344-179-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/5072-132-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/5072-177-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB