Analysis

  • max time kernel
    150s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    17-08-2022 13:24

General

  • Target

    d617cfaf2f5cfcb5c50ecc28d0d02582.exe

  • Size

    406KB

  • MD5

    d617cfaf2f5cfcb5c50ecc28d0d02582

  • SHA1

    63a2d370a2c0ef547cc7a78e220e0d9021e2b4a1

  • SHA256

    4a4d5455c9e941082c8c08a96102afc9d33abc40985bfcc00b6bee8c098066fd

  • SHA512

    857a130effc4aca8d5cebaaa78eace06242e7f96332553f5676f4670fdfdab45eed3306475d8e3a9ad7facf4e3b5cceac9aeb7e25c394a82324499e0b78fe8f0

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\d617cfaf2f5cfcb5c50ecc28d0d02582.exe
    "C:\Users\Admin\AppData\Local\Temp\d617cfaf2f5cfcb5c50ecc28d0d02582.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1812
    • \??\c:\users\admin\appdata\local\temp\d617cfaf2f5cfcb5c50ecc28d0d02582.exe 
      c:\users\admin\appdata\local\temp\d617cfaf2f5cfcb5c50ecc28d0d02582.exe 
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:976
      • 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:1204
    • 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:832
      • \??\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:1768
        • \??\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:700
          • \??\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:956
            • \??\c:\windows\system\spoolsv.exe
              c:\windows\system\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:1520
            • C:\Windows\SysWOW64\at.exe
              at 15:26 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
                PID:1392
              • C:\Windows\SysWOW64\at.exe
                at 15:27 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                6⤵
                  PID:1084
                • C:\Windows\SysWOW64\at.exe
                  at 15:28 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                  6⤵
                    PID:1068

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\d617cfaf2f5cfcb5c50ecc28d0d02582.exe 

          Filesize

          132KB

          MD5

          bee47439c4960e2728594ece9ad95ba7

          SHA1

          43f4b6f607dec5bec2a33e2fb4148c38de832490

          SHA256

          8a1902d9c0dbe388b28ef5a9c8ec4c0f1802fc6ccd43471ea337dcb3d71c81d4

          SHA512

          ad84d419d61b63e36a6766ba90773b39270bf9c8e72373b52c1979097e73110f749fad0cfed5c4f233304ad0af4b6e753666911ff7db83475c16c38976c46382

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

          Filesize

          274KB

          MD5

          7f9ebd4ed2db0d66c4be272c681bad48

          SHA1

          cefdff7b1cb786ff84458e6e16b1e2ead35f9c34

          SHA256

          d4fdf7e61db35ab2f6cbaaa4c02a9336b29d653e7249247a74c4f6fa787768b0

          SHA512

          627d9ae1a7cce0d4f3859034bd2224ea27ad1cd0d2d7592886e147ea7806de31d9bfd7a0aa4d955eb2854247b2029bd835e5b420d275f0616803efe3eec60997

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

          Filesize

          274KB

          MD5

          430bc84f6d9f46e0029264f5f91de686

          SHA1

          1f675389f045b1e4ab2557e102d779c26e2a6252

          SHA256

          05a60464b6c5ec85e181f0565658035c42364f8c870a519126e18c813a3316df

          SHA512

          e433d37208e2fd72570cd5977623290d67f608e6a6407c3c4cbf6a7cfed4c626b29e749086a3e9fdca9362d1c055029c73647839ff428fae3ea88cb281aceca7

        • C:\Windows\system\explorer.exe

          Filesize

          274KB

          MD5

          352db83b785364f55cd8a24f8d2cc008

          SHA1

          d0f3f4dfbd187db84953c7b9c816c0fc22c3aeb6

          SHA256

          620ee6a787cf8fa29ec14688dea60e1ec509af919b31f69e41d2337e95f10ed1

          SHA512

          4a9c66ac1ba5e5afab01485c197925f4e9663b9d28a9f831956be82d9b9c83b8215456bc74185e95d3754577ac947e80b5852261154975f239b22adff387577c

        • C:\Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          b18854f0ceac20dee93ad5af020064ae

          SHA1

          0c1a2dea348516a44f285394d88b2071bbb8c746

          SHA256

          7b772c4ed75ee3edd93ecbf49acb7cee1abec38c78531f78d54f7f64faf6ac38

          SHA512

          246f7a44663cba2234fd448e518a3c7850d397f7fa28b2906b305307dc4bb0f67f37df1fda9768a8f9ea59d2f194d881fa1f35ad4388f3259177598a5337761d

        • C:\Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          b18854f0ceac20dee93ad5af020064ae

          SHA1

          0c1a2dea348516a44f285394d88b2071bbb8c746

          SHA256

          7b772c4ed75ee3edd93ecbf49acb7cee1abec38c78531f78d54f7f64faf6ac38

          SHA512

          246f7a44663cba2234fd448e518a3c7850d397f7fa28b2906b305307dc4bb0f67f37df1fda9768a8f9ea59d2f194d881fa1f35ad4388f3259177598a5337761d

        • C:\Windows\system\svchost.exe

          Filesize

          274KB

          MD5

          6ff286a8a8020234c234bf833ede1783

          SHA1

          54bd4963b47cc4dba64da377583941a716a78a4e

          SHA256

          ee0eb0d7bb6d2a16fadf352da6f8336511a7a7308734fe8f6d9dcc4037892cc9

          SHA512

          c598e271a37ff875ce5991477e33b418fae44f66dff00c8943d085c69d2f49df71701bda369335b63a473a1fb858137714290b150e125d05147ddcba106f1c71

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

          Filesize

          274KB

          MD5

          7f9ebd4ed2db0d66c4be272c681bad48

          SHA1

          cefdff7b1cb786ff84458e6e16b1e2ead35f9c34

          SHA256

          d4fdf7e61db35ab2f6cbaaa4c02a9336b29d653e7249247a74c4f6fa787768b0

          SHA512

          627d9ae1a7cce0d4f3859034bd2224ea27ad1cd0d2d7592886e147ea7806de31d9bfd7a0aa4d955eb2854247b2029bd835e5b420d275f0616803efe3eec60997

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

          Filesize

          274KB

          MD5

          352db83b785364f55cd8a24f8d2cc008

          SHA1

          d0f3f4dfbd187db84953c7b9c816c0fc22c3aeb6

          SHA256

          620ee6a787cf8fa29ec14688dea60e1ec509af919b31f69e41d2337e95f10ed1

          SHA512

          4a9c66ac1ba5e5afab01485c197925f4e9663b9d28a9f831956be82d9b9c83b8215456bc74185e95d3754577ac947e80b5852261154975f239b22adff387577c

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

          Filesize

          274KB

          MD5

          b18854f0ceac20dee93ad5af020064ae

          SHA1

          0c1a2dea348516a44f285394d88b2071bbb8c746

          SHA256

          7b772c4ed75ee3edd93ecbf49acb7cee1abec38c78531f78d54f7f64faf6ac38

          SHA512

          246f7a44663cba2234fd448e518a3c7850d397f7fa28b2906b305307dc4bb0f67f37df1fda9768a8f9ea59d2f194d881fa1f35ad4388f3259177598a5337761d

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

          Filesize

          274KB

          MD5

          6ff286a8a8020234c234bf833ede1783

          SHA1

          54bd4963b47cc4dba64da377583941a716a78a4e

          SHA256

          ee0eb0d7bb6d2a16fadf352da6f8336511a7a7308734fe8f6d9dcc4037892cc9

          SHA512

          c598e271a37ff875ce5991477e33b418fae44f66dff00c8943d085c69d2f49df71701bda369335b63a473a1fb858137714290b150e125d05147ddcba106f1c71

        • \Users\Admin\AppData\Local\Temp\d617cfaf2f5cfcb5c50ecc28d0d02582.exe 

          Filesize

          132KB

          MD5

          bee47439c4960e2728594ece9ad95ba7

          SHA1

          43f4b6f607dec5bec2a33e2fb4148c38de832490

          SHA256

          8a1902d9c0dbe388b28ef5a9c8ec4c0f1802fc6ccd43471ea337dcb3d71c81d4

          SHA512

          ad84d419d61b63e36a6766ba90773b39270bf9c8e72373b52c1979097e73110f749fad0cfed5c4f233304ad0af4b6e753666911ff7db83475c16c38976c46382

        • \Users\Admin\AppData\Local\Temp\d617cfaf2f5cfcb5c50ecc28d0d02582.exe 

          Filesize

          132KB

          MD5

          bee47439c4960e2728594ece9ad95ba7

          SHA1

          43f4b6f607dec5bec2a33e2fb4148c38de832490

          SHA256

          8a1902d9c0dbe388b28ef5a9c8ec4c0f1802fc6ccd43471ea337dcb3d71c81d4

          SHA512

          ad84d419d61b63e36a6766ba90773b39270bf9c8e72373b52c1979097e73110f749fad0cfed5c4f233304ad0af4b6e753666911ff7db83475c16c38976c46382

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

          Filesize

          274KB

          MD5

          7f9ebd4ed2db0d66c4be272c681bad48

          SHA1

          cefdff7b1cb786ff84458e6e16b1e2ead35f9c34

          SHA256

          d4fdf7e61db35ab2f6cbaaa4c02a9336b29d653e7249247a74c4f6fa787768b0

          SHA512

          627d9ae1a7cce0d4f3859034bd2224ea27ad1cd0d2d7592886e147ea7806de31d9bfd7a0aa4d955eb2854247b2029bd835e5b420d275f0616803efe3eec60997

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

          Filesize

          274KB

          MD5

          7f9ebd4ed2db0d66c4be272c681bad48

          SHA1

          cefdff7b1cb786ff84458e6e16b1e2ead35f9c34

          SHA256

          d4fdf7e61db35ab2f6cbaaa4c02a9336b29d653e7249247a74c4f6fa787768b0

          SHA512

          627d9ae1a7cce0d4f3859034bd2224ea27ad1cd0d2d7592886e147ea7806de31d9bfd7a0aa4d955eb2854247b2029bd835e5b420d275f0616803efe3eec60997

        • \Windows\system\explorer.exe

          Filesize

          274KB

          MD5

          352db83b785364f55cd8a24f8d2cc008

          SHA1

          d0f3f4dfbd187db84953c7b9c816c0fc22c3aeb6

          SHA256

          620ee6a787cf8fa29ec14688dea60e1ec509af919b31f69e41d2337e95f10ed1

          SHA512

          4a9c66ac1ba5e5afab01485c197925f4e9663b9d28a9f831956be82d9b9c83b8215456bc74185e95d3754577ac947e80b5852261154975f239b22adff387577c

        • \Windows\system\explorer.exe

          Filesize

          274KB

          MD5

          352db83b785364f55cd8a24f8d2cc008

          SHA1

          d0f3f4dfbd187db84953c7b9c816c0fc22c3aeb6

          SHA256

          620ee6a787cf8fa29ec14688dea60e1ec509af919b31f69e41d2337e95f10ed1

          SHA512

          4a9c66ac1ba5e5afab01485c197925f4e9663b9d28a9f831956be82d9b9c83b8215456bc74185e95d3754577ac947e80b5852261154975f239b22adff387577c

        • \Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          b18854f0ceac20dee93ad5af020064ae

          SHA1

          0c1a2dea348516a44f285394d88b2071bbb8c746

          SHA256

          7b772c4ed75ee3edd93ecbf49acb7cee1abec38c78531f78d54f7f64faf6ac38

          SHA512

          246f7a44663cba2234fd448e518a3c7850d397f7fa28b2906b305307dc4bb0f67f37df1fda9768a8f9ea59d2f194d881fa1f35ad4388f3259177598a5337761d

        • \Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          b18854f0ceac20dee93ad5af020064ae

          SHA1

          0c1a2dea348516a44f285394d88b2071bbb8c746

          SHA256

          7b772c4ed75ee3edd93ecbf49acb7cee1abec38c78531f78d54f7f64faf6ac38

          SHA512

          246f7a44663cba2234fd448e518a3c7850d397f7fa28b2906b305307dc4bb0f67f37df1fda9768a8f9ea59d2f194d881fa1f35ad4388f3259177598a5337761d

        • \Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          b18854f0ceac20dee93ad5af020064ae

          SHA1

          0c1a2dea348516a44f285394d88b2071bbb8c746

          SHA256

          7b772c4ed75ee3edd93ecbf49acb7cee1abec38c78531f78d54f7f64faf6ac38

          SHA512

          246f7a44663cba2234fd448e518a3c7850d397f7fa28b2906b305307dc4bb0f67f37df1fda9768a8f9ea59d2f194d881fa1f35ad4388f3259177598a5337761d

        • \Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          b18854f0ceac20dee93ad5af020064ae

          SHA1

          0c1a2dea348516a44f285394d88b2071bbb8c746

          SHA256

          7b772c4ed75ee3edd93ecbf49acb7cee1abec38c78531f78d54f7f64faf6ac38

          SHA512

          246f7a44663cba2234fd448e518a3c7850d397f7fa28b2906b305307dc4bb0f67f37df1fda9768a8f9ea59d2f194d881fa1f35ad4388f3259177598a5337761d

        • \Windows\system\svchost.exe

          Filesize

          274KB

          MD5

          6ff286a8a8020234c234bf833ede1783

          SHA1

          54bd4963b47cc4dba64da377583941a716a78a4e

          SHA256

          ee0eb0d7bb6d2a16fadf352da6f8336511a7a7308734fe8f6d9dcc4037892cc9

          SHA512

          c598e271a37ff875ce5991477e33b418fae44f66dff00c8943d085c69d2f49df71701bda369335b63a473a1fb858137714290b150e125d05147ddcba106f1c71

        • \Windows\system\svchost.exe

          Filesize

          274KB

          MD5

          6ff286a8a8020234c234bf833ede1783

          SHA1

          54bd4963b47cc4dba64da377583941a716a78a4e

          SHA256

          ee0eb0d7bb6d2a16fadf352da6f8336511a7a7308734fe8f6d9dcc4037892cc9

          SHA512

          c598e271a37ff875ce5991477e33b418fae44f66dff00c8943d085c69d2f49df71701bda369335b63a473a1fb858137714290b150e125d05147ddcba106f1c71

        • memory/700-125-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/700-120-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/832-127-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/832-118-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/956-136-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/956-121-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1204-67-0x0000000000090000-0x00000000000AA000-memory.dmp

          Filesize

          104KB

        • memory/1204-65-0x0000000000090000-0x00000000000AA000-memory.dmp

          Filesize

          104KB

        • memory/1204-70-0x0000000000090000-0x00000000000AA000-memory.dmp

          Filesize

          104KB

        • memory/1204-72-0x0000000000090000-0x00000000000AA000-memory.dmp

          Filesize

          104KB

        • memory/1520-124-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1520-123-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1768-119-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1768-135-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1812-126-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1812-116-0x0000000002C00000-0x0000000002C3E000-memory.dmp

          Filesize

          248KB

        • memory/1812-114-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1812-57-0x0000000076411000-0x0000000076413000-memory.dmp

          Filesize

          8KB