Analysis

  • max time kernel
    151s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-08-2022 06:05

General

  • Target

    98d37790e570afd49b7a00192019f6c9e7c84e96069da4daa1b64a6cc88695a8.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 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\98d37790e570afd49b7a00192019f6c9e7c84e96069da4daa1b64a6cc88695a8.exe
    "C:\Users\Admin\AppData\Local\Temp\98d37790e570afd49b7a00192019f6c9e7c84e96069da4daa1b64a6cc88695a8.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4260
    • \??\c:\users\admin\appdata\local\temp\98d37790e570afd49b7a00192019f6c9e7c84e96069da4daa1b64a6cc88695a8.exe 
      c:\users\admin\appdata\local\temp\98d37790e570afd49b7a00192019f6c9e7c84e96069da4daa1b64a6cc88695a8.exe 
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2976
      • 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:5004
    • 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:4916
      • \??\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:5032
        • \??\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:1004
          • \??\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:4196
            • \??\c:\windows\system\spoolsv.exe
              c:\windows\system\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:2536
            • C:\Windows\SysWOW64\at.exe
              at 08:07 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
                PID:1232
              • C:\Windows\SysWOW64\at.exe
                at 08:08 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                6⤵
                  PID:4240
                • C:\Windows\SysWOW64\at.exe
                  at 08:09 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                  6⤵
                    PID:1244

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\98d37790e570afd49b7a00192019f6c9e7c84e96069da4daa1b64a6cc88695a8.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\Local\icsys.icn.exe

          Filesize

          274KB

          MD5

          ec13047c64390d0e3973b2515dd18267

          SHA1

          32ce693670495b197ff668810c0fb6f9bcf8d5be

          SHA256

          2bd1d41b13e8918710db1c5db5f75c45ec8e4f925fc76cc5705d7c9feecebc11

          SHA512

          123d37d434cfd32a6105fb0782dc3706355911f00e71496a28be57874e9c7025a44219ec91d3d324436953f46df22dfdae3ccb278a5e1bd87cb73e2089f1c0a6

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

          Filesize

          274KB

          MD5

          a4946be51ea0e09fff3627f83a13268e

          SHA1

          6c3b851d3124989a56034d840bf1b9966895b25f

          SHA256

          71d773252ccf634f48f8b14c4a855f9ed63bbfc3bbc39d6074671d2ce7125a07

          SHA512

          6f4845b6512861a7c13f20cf9d57530e1fa2b50d2d213aaaee7e8534ec4ec10848fe927b5043e9c5e1945461bf993950cb1eaad4ae32549b0dc2eb6577f15fde

        • C:\Windows\System\explorer.exe

          Filesize

          274KB

          MD5

          f638c63b2394d84f8a92060e21dc0786

          SHA1

          e12864879420ae54b8ad1aa087175e6f0f00cdd1

          SHA256

          b69bed9af31c80087c66551045d429182168249cd8a4a1d2e70cb2cacefc491f

          SHA512

          6e101881209201bc49bb6b49ace407bc74aebed1b241ca49933305a42ccea90bf236aef1e53b8473b7ff2b0c94b193b6ad8288eb64b9d8ee062e8fd189be13ef

        • C:\Windows\System\spoolsv.exe

          Filesize

          274KB

          MD5

          808cf52bffbbbb56bcece82afa1e71a2

          SHA1

          f5a0b3c346f86f02cdb8eec10bbe0693b1682617

          SHA256

          90b6303b6adb4a54ecf203a12901d6f25e1aee07d23dacf46c94deb2c1de4377

          SHA512

          aae9994d66f29bf5a86404aa1102ed85b9930a27369667c64110329da9dad21a5b4e3b623b376d287cd559ba4bf57f885b1ff6b35dca9b120e9385d8edeba5ad

        • C:\Windows\System\spoolsv.exe

          Filesize

          274KB

          MD5

          808cf52bffbbbb56bcece82afa1e71a2

          SHA1

          f5a0b3c346f86f02cdb8eec10bbe0693b1682617

          SHA256

          90b6303b6adb4a54ecf203a12901d6f25e1aee07d23dacf46c94deb2c1de4377

          SHA512

          aae9994d66f29bf5a86404aa1102ed85b9930a27369667c64110329da9dad21a5b4e3b623b376d287cd559ba4bf57f885b1ff6b35dca9b120e9385d8edeba5ad

        • C:\Windows\System\svchost.exe

          Filesize

          274KB

          MD5

          ec718eebeaa3e126f73654bf82402e70

          SHA1

          da8fa107259cf7461f99290cdfb521d218f6939a

          SHA256

          5cb11b4566018be37400d263f639a315925eeeb06cfe9f804c5edca2b7aecb3c

          SHA512

          c250f17fecee46a3891c5d2f00f81c82e19e59bee087bfa0cb6148a2bfe1825c03cef04decb6a53fe1ab174dbd3bfe53dcf791d54be8b43202ad7df329177862

        • \??\c:\users\admin\appdata\local\temp\98d37790e570afd49b7a00192019f6c9e7c84e96069da4daa1b64a6cc88695a8.exe 

          Filesize

          132KB

          MD5

          f7e5a5c100fcf5a248dfe0424bc5bbdc

          SHA1

          05fab29b3f901ea56ebc0d5e240aa747aa44ee4f

          SHA256

          fafa8057f024c7a3c30e48b63d05d712e7de1f2f38f592a03cabbe8917942a89

          SHA512

          048b661425a63033980b1253bd0e8e24de0eb6ea230e24c46eec965371cd74f7ebd27ae004f6ee006abb48879fa3258ff6d4d049380ea8da57cda5953fb91bf2

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

          Filesize

          274KB

          MD5

          f638c63b2394d84f8a92060e21dc0786

          SHA1

          e12864879420ae54b8ad1aa087175e6f0f00cdd1

          SHA256

          b69bed9af31c80087c66551045d429182168249cd8a4a1d2e70cb2cacefc491f

          SHA512

          6e101881209201bc49bb6b49ace407bc74aebed1b241ca49933305a42ccea90bf236aef1e53b8473b7ff2b0c94b193b6ad8288eb64b9d8ee062e8fd189be13ef

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

          Filesize

          274KB

          MD5

          808cf52bffbbbb56bcece82afa1e71a2

          SHA1

          f5a0b3c346f86f02cdb8eec10bbe0693b1682617

          SHA256

          90b6303b6adb4a54ecf203a12901d6f25e1aee07d23dacf46c94deb2c1de4377

          SHA512

          aae9994d66f29bf5a86404aa1102ed85b9930a27369667c64110329da9dad21a5b4e3b623b376d287cd559ba4bf57f885b1ff6b35dca9b120e9385d8edeba5ad

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

          Filesize

          274KB

          MD5

          ec718eebeaa3e126f73654bf82402e70

          SHA1

          da8fa107259cf7461f99290cdfb521d218f6939a

          SHA256

          5cb11b4566018be37400d263f639a315925eeeb06cfe9f804c5edca2b7aecb3c

          SHA512

          c250f17fecee46a3891c5d2f00f81c82e19e59bee087bfa0cb6148a2bfe1825c03cef04decb6a53fe1ab174dbd3bfe53dcf791d54be8b43202ad7df329177862

        • memory/1004-178-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/1004-170-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/2536-177-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/4196-171-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/4196-186-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/4260-179-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/4260-132-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/4916-180-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/4916-168-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/5004-155-0x0000000005570000-0x00000000055D6000-memory.dmp

          Filesize

          408KB

        • memory/5004-183-0x0000000005F30000-0x0000000005FCC000-memory.dmp

          Filesize

          624KB

        • memory/5004-142-0x0000000000DE0000-0x0000000000DFA000-memory.dmp

          Filesize

          104KB

        • memory/5032-185-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/5032-169-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB