Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/08/2024, 02:01

General

  • Target
    9e7bf4b2bd7f30ea9d9dca6bc80d28c5b43202df1477a4d46f695e096dce17ba.exe
  • Size 1.5MB
  • Sample240818-cfne7szanf
  • SHA256 9e7bf4b2bd7f30ea9d9dca6bc80d28c5b43202df1477a4d46f695e096dce17ba
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • StormKitty

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

  • StormKitty payload 1 IoCs
  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3420
      • C:\Users\Admin\AppData\Local\Temp\9e7bf4b2bd7f30ea9d9dca6bc80d28c5b43202df1477a4d46f695e096dce17ba.exe
        "C:\Users\Admin\AppData\Local\Temp\9e7bf4b2bd7f30ea9d9dca6bc80d28c5b43202df1477a4d46f695e096dce17ba.exe"
        2⤵
        • Checks computer location settings
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3608
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k move Surrey Surrey.cmd && Surrey.cmd && exit
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3884
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:1624
          • C:\Windows\SysWOW64\findstr.exe
            findstr /I "wrsa.exe opssvc.exe"
            4⤵
            • System Location Discovery: System Language Discovery
            PID:908
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:448
          • C:\Windows\SysWOW64\findstr.exe
            findstr /I "avastui.exe avgui.exe bdservicehost.exe ekrn.exe nswscsvc.exe sophoshealth.exe"
            4⤵
            • System Location Discovery: System Language Discovery
            PID:3620
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c md 719580
            4⤵
            • System Location Discovery: System Language Discovery
            PID:2776
          • C:\Windows\SysWOW64\findstr.exe
            findstr /V "copehebrewinquireinnocent" Corpus
            4⤵
            • System Location Discovery: System Language Discovery
            PID:4180
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c copy /b ..\Utilize + ..\Verzeichnis + ..\Built + ..\Vessels + ..\Cradle + ..\Jaguar + ..\Comics + ..\Flux + ..\Liberal f
            4⤵
            • System Location Discovery: System Language Discovery
            PID:2500
          • C:\Users\Admin\AppData\Local\Temp\719580\Optimum.pif
            Optimum.pif f
            4⤵
            • Suspicious use of NtCreateUserProcessOtherParentProcess
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of WriteProcessMemory
            PID:4744
          • C:\Windows\SysWOW64\choice.exe
            choice /d y /t 5
            4⤵
            • System Location Discovery: System Language Discovery
            PID:4604
      • C:\Users\Admin\AppData\Local\Temp\719580\RegAsm.exe
        C:\Users\Admin\AppData\Local\Temp\719580\RegAsm.exe
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:5044

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          Optimum.pif

          • Path C:\Users\Admin\AppData\Local\Temp\719580\Optimum.pif
          • Size 872KB
          • SHA256 237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d
          • MD5 SHA1 SHA512 SSDEEP

          RegAsm.exe

          • Path C:\Users\Admin\AppData\Local\Temp\719580\RegAsm.exe
          • Size 63KB
          • SHA256 c066aee7aa3aa83f763ebc5541daa266ed6c648fbffcde0d836a13b221bb2adc
          • MD5 SHA1 SHA512 SSDEEP

          f

          • Path C:\Users\Admin\AppData\Local\Temp\719580\f
          • Size 619KB
          • SHA256 3d4000a64c1b7be8fcefe59e8f39f1ae12ef1fcd9d30a39158f83b26ee189831
          • MD5 SHA1 SHA512 SSDEEP

          Built

          • Path C:\Users\Admin\AppData\Local\Temp\Built
          • Size 58KB
          • SHA256 7b857693641ff1ff59e69422b09299a5580d20677acd530c27c7fbc9e3ee3b92
          • MD5 SHA1 SHA512 SSDEEP

          Comics

          • Path C:\Users\Admin\AppData\Local\Temp\Comics
          • Size 66KB
          • SHA256 2caa4849a4353ca50dfdbc860412e95b783fdcc7e60d8756c9b4bdf2915e1923
          • MD5 SHA1 SHA512 SSDEEP

          Corpus

          • Path C:\Users\Admin\AppData\Local\Temp\Corpus
          • Size 236B
          • SHA256 849892bc358956ee263db6cbddd4a9cca0e1564d6caefe44e2e998d559e610a0
          • MD5 SHA1 SHA512

          Cradle

          • Path C:\Users\Admin\AppData\Local\Temp\Cradle
          • Size 78KB
          • SHA256 3ab028b25bd6bd3ba48a92c4198dd8ff07fe71b4b41c785469d79da422f2fe46
          • MD5 SHA1 SHA512 SSDEEP

          Flux

          • Path C:\Users\Admin\AppData\Local\Temp\Flux
          • Size 92KB
          • SHA256 f4e881ea8495c993e2f008e9b5fc082bc2cea97812fe944dda293f3b02fb60b0
          • MD5 SHA1 SHA512 SSDEEP

          Folding

          • Path C:\Users\Admin\AppData\Local\Temp\Folding
          • Size 872KB
          • SHA256 95d53427ef46fb44354a0253a611e342a30428101acaf83215f5b21432afbff1
          • MD5 SHA1 SHA512 SSDEEP

          Jaguar

          • Path C:\Users\Admin\AppData\Local\Temp\Jaguar
          • Size 93KB
          • SHA256 49687025dce701973b47fb6caba71f1443471e64551f41967a6a3275ce1e93d5
          • MD5 SHA1 SHA512 SSDEEP

          Liberal

          • Path C:\Users\Admin\AppData\Local\Temp\Liberal
          • Size 38KB
          • SHA256 aacfabd8f6dde87949cbafa8eab7536dc5377e726064445e62824d10584eaec5
          • MD5 SHA1 SHA512 SSDEEP

          Surrey

          • Path C:\Users\Admin\AppData\Local\Temp\Surrey
          • Size 14KB
          • SHA256 66627eef98fb038f1d22f620bc8d85430a442d08313602eb02f0b158b5471812
          • MD5 SHA1 SHA512 SSDEEP

          Utilize

          • Path C:\Users\Admin\AppData\Local\Temp\Utilize
          • Size 83KB
          • SHA256 96af995b201e5392293f2d7272b1c9a3f0eb671d62aeafffb4b0bbbfed0e3560
          • MD5 SHA1 SHA512 SSDEEP

          Verzeichnis

          • Path C:\Users\Admin\AppData\Local\Temp\Verzeichnis
          • Size 61KB
          • SHA256 41586643456496d40c3279839a1cb1528428c19deefb4c702bd58f1467a1a1d0
          • MD5 SHA1 SHA512 SSDEEP

          Vessels

          • Path C:\Users\Admin\AppData\Local\Temp\Vessels
          • Size 50KB
          • SHA256 c8c35545936faa3b0e00aa1b907952e97fffd9c1958045253863b4c2fad7f295
          • MD5 SHA1 SHA512 SSDEEP

          memory/5044-33-0x0000000000700000-0x0000000000798000-memory.dmp

          memory/5044-36-0x0000000005400000-0x00000000059A4000-memory.dmp

          memory/5044-37-0x0000000004D40000-0x0000000004DA6000-memory.dmp

          memory/5044-39-0x0000000005DD0000-0x0000000005E62000-memory.dmp

          memory/5044-40-0x0000000005F10000-0x0000000005FAC000-memory.dmp

          memory/5044-41-0x0000000005DB0000-0x0000000005DBA000-memory.dmp