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
    21-09-2022 05:38

General

  • Target

    150c37f09606d999aed77f1621657847.exe

  • Size

    422KB

  • MD5

    150c37f09606d999aed77f1621657847

  • SHA1

    a75789d5c83d6b2605dc1565f9af298610c557ec

  • SHA256

    1727599b52e24b71b4dc2e5e752f653bd9160dc77d6734bd0686bae753b0e362

  • SHA512

    55143a949d24649a7520c621f97c132e1f3aaa40a943096c78b43c021a7e22ef7f424d5d0eb3b4a95f6917deb44e33198c4be047d80630bc318d7f8f42de2e86

  • SSDEEP

    12288:GENN+T5xYrllrU7QY6MGmp13LEiX5QypIUbMp6OHf:K5xolYQY65mp13LEiX5QypIUbMp6OHf

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5651446034:AAHNSrQ1aoBX2vvQwJ01g6tQEdX-Me4aDUI/sendMessage?chat_id=5529858195

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\150c37f09606d999aed77f1621657847.exe
    "C:\Users\Admin\AppData\Local\Temp\150c37f09606d999aed77f1621657847.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1096
    • \??\c:\users\admin\appdata\local\temp\150c37f09606d999aed77f1621657847.exe 
      c:\users\admin\appdata\local\temp\150c37f09606d999aed77f1621657847.exe 
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1632
      • 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:1400
    • 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:1384
      • \??\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:268
        • \??\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:1584
          • \??\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:1780
            • \??\c:\windows\system\spoolsv.exe
              c:\windows\system\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:1508
            • C:\Windows\SysWOW64\at.exe
              at 07:40 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
                PID:1836
              • C:\Windows\SysWOW64\at.exe
                at 07:41 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                6⤵
                  PID:1652
                • C:\Windows\SysWOW64\at.exe
                  at 07:42 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                  6⤵
                    PID:2012

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\150c37f09606d999aed77f1621657847.exe 

          Filesize

          148KB

          MD5

          e3068eb1d0819d70dbb830c864faf808

          SHA1

          2892ecde052f9aefd92363c216031738335afae1

          SHA256

          a2543d4afd149df2bac01e2a4ad78eb4351e38af81bf5345c48dce85af8960b5

          SHA512

          c32b8401b5ae049d21523dc38cc68de32bd2e0bf01e078cd1366785a9c2a8e37c750e8eda5eba2857907065a8efc6e1cd2be1e145a11ef6889942b7a80fb808e

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

          Filesize

          274KB

          MD5

          a6d1e2fe5d5c012c3343bd31a8054928

          SHA1

          9a1970f42e178d2c318910743a467edf9d118b2b

          SHA256

          03867ee368d82db829e685219b809db71b7af4e9d38676ef5abd233c385a4bb8

          SHA512

          9bc626bcc5465371048e6d193539ac954adf3d867f2005a13ca973eb234766f8c9a5573c28a9ecd697f5868ac532b89269806bf8814d5ca761ba6be17170eb27

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

          Filesize

          274KB

          MD5

          73dbbd76533f7337af91694213622fdd

          SHA1

          7fae090c305334138b653c397e3682e6f7d3a2ad

          SHA256

          f22ef66a7eeb98469f1ce9b69ba5759e2519bbb6fef3594bbff0e573dfa45431

          SHA512

          df6c028571c1b7e338db220b5ad24ceebcda6b80bca5ff7ccd45937b360b09c51b357d5ba61fe397bb43d0a62194492963e50b2cb441c289e7c537b56ca4754b

        • C:\Windows\system\explorer.exe

          Filesize

          274KB

          MD5

          2b1b67e4ac425e4bef76f3d74818b5d1

          SHA1

          c84a2899e31ab31374a5fbe6a796183d19f3c69c

          SHA256

          37073ec40004ead9599c5ab100567ef1e7362cfa88f6f2cb1e218aeed8132ae3

          SHA512

          7116d4b4b181858d7c6525069d7dcd9f2e537bd81f8c04a5c74afc99ee8583d45557e488a759ae5b8d3ba4845dada03cd67661fdab07265e035bfd028a35d596

        • C:\Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          55b56a080173c8b6cbddc25df9705e2e

          SHA1

          4f021fd1127ee5c1ea2e5c1718c7f954ecc507bc

          SHA256

          f897144215cf45b52158ba1d290ec1147d1234bb4250c76754b8f95607f6c2be

          SHA512

          674ecfddfd25f825aa53b4075650900d84e0c3f08d8665f8d10c9cfbe05587e1bba5aa188999e32dd92632ebf72648f212355bcb6ff5c64c276e135829318abb

        • C:\Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          55b56a080173c8b6cbddc25df9705e2e

          SHA1

          4f021fd1127ee5c1ea2e5c1718c7f954ecc507bc

          SHA256

          f897144215cf45b52158ba1d290ec1147d1234bb4250c76754b8f95607f6c2be

          SHA512

          674ecfddfd25f825aa53b4075650900d84e0c3f08d8665f8d10c9cfbe05587e1bba5aa188999e32dd92632ebf72648f212355bcb6ff5c64c276e135829318abb

        • C:\Windows\system\svchost.exe

          Filesize

          274KB

          MD5

          4a4837e3d7210901edcd52fafa0d7952

          SHA1

          5bb0f443fcd9370756c03ceae91dfff6f7369ae7

          SHA256

          32e31280dd56cb2f8747bcfb523a56cdc0019cb16d915ea255d1489d4e39d640

          SHA512

          be0bad04fe0098a12e03bd672476d79a2e26027375f6eb3dfab2118ff83d971e9e1167672c8f4722911359812aa2262d71fa38291bd915f7e64f8181a92c6c87

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

          Filesize

          274KB

          MD5

          a6d1e2fe5d5c012c3343bd31a8054928

          SHA1

          9a1970f42e178d2c318910743a467edf9d118b2b

          SHA256

          03867ee368d82db829e685219b809db71b7af4e9d38676ef5abd233c385a4bb8

          SHA512

          9bc626bcc5465371048e6d193539ac954adf3d867f2005a13ca973eb234766f8c9a5573c28a9ecd697f5868ac532b89269806bf8814d5ca761ba6be17170eb27

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

          Filesize

          274KB

          MD5

          2b1b67e4ac425e4bef76f3d74818b5d1

          SHA1

          c84a2899e31ab31374a5fbe6a796183d19f3c69c

          SHA256

          37073ec40004ead9599c5ab100567ef1e7362cfa88f6f2cb1e218aeed8132ae3

          SHA512

          7116d4b4b181858d7c6525069d7dcd9f2e537bd81f8c04a5c74afc99ee8583d45557e488a759ae5b8d3ba4845dada03cd67661fdab07265e035bfd028a35d596

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

          Filesize

          274KB

          MD5

          55b56a080173c8b6cbddc25df9705e2e

          SHA1

          4f021fd1127ee5c1ea2e5c1718c7f954ecc507bc

          SHA256

          f897144215cf45b52158ba1d290ec1147d1234bb4250c76754b8f95607f6c2be

          SHA512

          674ecfddfd25f825aa53b4075650900d84e0c3f08d8665f8d10c9cfbe05587e1bba5aa188999e32dd92632ebf72648f212355bcb6ff5c64c276e135829318abb

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

          Filesize

          274KB

          MD5

          4a4837e3d7210901edcd52fafa0d7952

          SHA1

          5bb0f443fcd9370756c03ceae91dfff6f7369ae7

          SHA256

          32e31280dd56cb2f8747bcfb523a56cdc0019cb16d915ea255d1489d4e39d640

          SHA512

          be0bad04fe0098a12e03bd672476d79a2e26027375f6eb3dfab2118ff83d971e9e1167672c8f4722911359812aa2262d71fa38291bd915f7e64f8181a92c6c87

        • \Users\Admin\AppData\Local\Temp\150c37f09606d999aed77f1621657847.exe 

          Filesize

          148KB

          MD5

          e3068eb1d0819d70dbb830c864faf808

          SHA1

          2892ecde052f9aefd92363c216031738335afae1

          SHA256

          a2543d4afd149df2bac01e2a4ad78eb4351e38af81bf5345c48dce85af8960b5

          SHA512

          c32b8401b5ae049d21523dc38cc68de32bd2e0bf01e078cd1366785a9c2a8e37c750e8eda5eba2857907065a8efc6e1cd2be1e145a11ef6889942b7a80fb808e

        • \Users\Admin\AppData\Local\Temp\150c37f09606d999aed77f1621657847.exe 

          Filesize

          148KB

          MD5

          e3068eb1d0819d70dbb830c864faf808

          SHA1

          2892ecde052f9aefd92363c216031738335afae1

          SHA256

          a2543d4afd149df2bac01e2a4ad78eb4351e38af81bf5345c48dce85af8960b5

          SHA512

          c32b8401b5ae049d21523dc38cc68de32bd2e0bf01e078cd1366785a9c2a8e37c750e8eda5eba2857907065a8efc6e1cd2be1e145a11ef6889942b7a80fb808e

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

          Filesize

          274KB

          MD5

          a6d1e2fe5d5c012c3343bd31a8054928

          SHA1

          9a1970f42e178d2c318910743a467edf9d118b2b

          SHA256

          03867ee368d82db829e685219b809db71b7af4e9d38676ef5abd233c385a4bb8

          SHA512

          9bc626bcc5465371048e6d193539ac954adf3d867f2005a13ca973eb234766f8c9a5573c28a9ecd697f5868ac532b89269806bf8814d5ca761ba6be17170eb27

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

          Filesize

          274KB

          MD5

          a6d1e2fe5d5c012c3343bd31a8054928

          SHA1

          9a1970f42e178d2c318910743a467edf9d118b2b

          SHA256

          03867ee368d82db829e685219b809db71b7af4e9d38676ef5abd233c385a4bb8

          SHA512

          9bc626bcc5465371048e6d193539ac954adf3d867f2005a13ca973eb234766f8c9a5573c28a9ecd697f5868ac532b89269806bf8814d5ca761ba6be17170eb27

        • \Windows\system\explorer.exe

          Filesize

          274KB

          MD5

          2b1b67e4ac425e4bef76f3d74818b5d1

          SHA1

          c84a2899e31ab31374a5fbe6a796183d19f3c69c

          SHA256

          37073ec40004ead9599c5ab100567ef1e7362cfa88f6f2cb1e218aeed8132ae3

          SHA512

          7116d4b4b181858d7c6525069d7dcd9f2e537bd81f8c04a5c74afc99ee8583d45557e488a759ae5b8d3ba4845dada03cd67661fdab07265e035bfd028a35d596

        • \Windows\system\explorer.exe

          Filesize

          274KB

          MD5

          2b1b67e4ac425e4bef76f3d74818b5d1

          SHA1

          c84a2899e31ab31374a5fbe6a796183d19f3c69c

          SHA256

          37073ec40004ead9599c5ab100567ef1e7362cfa88f6f2cb1e218aeed8132ae3

          SHA512

          7116d4b4b181858d7c6525069d7dcd9f2e537bd81f8c04a5c74afc99ee8583d45557e488a759ae5b8d3ba4845dada03cd67661fdab07265e035bfd028a35d596

        • \Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          55b56a080173c8b6cbddc25df9705e2e

          SHA1

          4f021fd1127ee5c1ea2e5c1718c7f954ecc507bc

          SHA256

          f897144215cf45b52158ba1d290ec1147d1234bb4250c76754b8f95607f6c2be

          SHA512

          674ecfddfd25f825aa53b4075650900d84e0c3f08d8665f8d10c9cfbe05587e1bba5aa188999e32dd92632ebf72648f212355bcb6ff5c64c276e135829318abb

        • \Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          55b56a080173c8b6cbddc25df9705e2e

          SHA1

          4f021fd1127ee5c1ea2e5c1718c7f954ecc507bc

          SHA256

          f897144215cf45b52158ba1d290ec1147d1234bb4250c76754b8f95607f6c2be

          SHA512

          674ecfddfd25f825aa53b4075650900d84e0c3f08d8665f8d10c9cfbe05587e1bba5aa188999e32dd92632ebf72648f212355bcb6ff5c64c276e135829318abb

        • \Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          55b56a080173c8b6cbddc25df9705e2e

          SHA1

          4f021fd1127ee5c1ea2e5c1718c7f954ecc507bc

          SHA256

          f897144215cf45b52158ba1d290ec1147d1234bb4250c76754b8f95607f6c2be

          SHA512

          674ecfddfd25f825aa53b4075650900d84e0c3f08d8665f8d10c9cfbe05587e1bba5aa188999e32dd92632ebf72648f212355bcb6ff5c64c276e135829318abb

        • \Windows\system\spoolsv.exe

          Filesize

          274KB

          MD5

          55b56a080173c8b6cbddc25df9705e2e

          SHA1

          4f021fd1127ee5c1ea2e5c1718c7f954ecc507bc

          SHA256

          f897144215cf45b52158ba1d290ec1147d1234bb4250c76754b8f95607f6c2be

          SHA512

          674ecfddfd25f825aa53b4075650900d84e0c3f08d8665f8d10c9cfbe05587e1bba5aa188999e32dd92632ebf72648f212355bcb6ff5c64c276e135829318abb

        • \Windows\system\svchost.exe

          Filesize

          274KB

          MD5

          4a4837e3d7210901edcd52fafa0d7952

          SHA1

          5bb0f443fcd9370756c03ceae91dfff6f7369ae7

          SHA256

          32e31280dd56cb2f8747bcfb523a56cdc0019cb16d915ea255d1489d4e39d640

          SHA512

          be0bad04fe0098a12e03bd672476d79a2e26027375f6eb3dfab2118ff83d971e9e1167672c8f4722911359812aa2262d71fa38291bd915f7e64f8181a92c6c87

        • \Windows\system\svchost.exe

          Filesize

          274KB

          MD5

          4a4837e3d7210901edcd52fafa0d7952

          SHA1

          5bb0f443fcd9370756c03ceae91dfff6f7369ae7

          SHA256

          32e31280dd56cb2f8747bcfb523a56cdc0019cb16d915ea255d1489d4e39d640

          SHA512

          be0bad04fe0098a12e03bd672476d79a2e26027375f6eb3dfab2118ff83d971e9e1167672c8f4722911359812aa2262d71fa38291bd915f7e64f8181a92c6c87

        • memory/268-134-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/268-114-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1096-109-0x0000000002620000-0x000000000265E000-memory.dmp

          Filesize

          248KB

        • memory/1096-126-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1096-57-0x0000000075211000-0x0000000075213000-memory.dmp

          Filesize

          8KB

        • memory/1096-108-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1384-111-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1384-125-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1400-67-0x0000000000090000-0x00000000000AA000-memory.dmp

          Filesize

          104KB

        • memory/1400-75-0x0000000000090000-0x00000000000AA000-memory.dmp

          Filesize

          104KB

        • memory/1400-65-0x0000000000090000-0x00000000000AA000-memory.dmp

          Filesize

          104KB

        • memory/1400-73-0x0000000000090000-0x00000000000AA000-memory.dmp

          Filesize

          104KB

        • memory/1508-123-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1584-117-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1584-124-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1780-120-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1780-135-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB