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Analysis

  • max time kernel
    191s
  • max time network
    198s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/12/2022, 03:22

General

  • Target

    a1948a43cd5bff965d2d54ffd24f673728719cd97f028c33b776607603f342a5.exe

  • Size

    2.6MB

  • MD5

    f3afc3d7fdb86f8ad5f56b93e993a8f8

  • SHA1

    de7fd67b7e0c91ffbaea59b95a5a5a29911320a6

  • SHA256

    a1948a43cd5bff965d2d54ffd24f673728719cd97f028c33b776607603f342a5

  • SHA512

    a344a02d1d9cbb662d432919d7c5744875eca1c32afbab36d514f47d3ba1a39f9db548f0cb76a62a9082898ee0bd1126f85f45a88d9f8611e38f32f44eaa792d

  • SSDEEP

    24576:xB84vadsL8ec1gda1CXcBzlS69DL2kRdDHiS+HC:7vezwc9tLZ

Score
10/10

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 10 IoCs
  • Executes dropped EXE 3 IoCs
  • UPX packed file 12 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry key 1 TTPs 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 57 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a1948a43cd5bff965d2d54ffd24f673728719cd97f028c33b776607603f342a5.exe
    "C:\Users\Admin\AppData\Local\Temp\a1948a43cd5bff965d2d54ffd24f673728719cd97f028c33b776607603f342a5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2364
    • C:\Users\Admin\AppData\Local\Temp\a1948a43cd5bff965d2d54ffd24f673728719cd97f028c33b776607603f342a5.exe
      "C:\Users\Admin\AppData\Local\Temp\a1948a43cd5bff965d2d54ffd24f673728719cd97f028c33b776607603f342a5.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3728
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KRVHF.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2520
        • C:\Windows\SysWOW64\reg.exe
          REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "javacpl" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\javacpl.exe" /f
          4⤵
          • Adds Run key to start application
          PID:2580
      • C:\Users\Admin\AppData\Roaming\javacpl.exe
        "C:\Users\Admin\AppData\Roaming\javacpl.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2236
        • C:\Users\Admin\AppData\Roaming\javacpl.exe
          "C:\Users\Admin\AppData\Roaming\javacpl.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1776
        • C:\Users\Admin\AppData\Roaming\javacpl.exe
          "C:\Users\Admin\AppData\Roaming\javacpl.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1992
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:3720
            • C:\Windows\SysWOW64\reg.exe
              REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
              6⤵
              • Modifies firewall policy service
              • Modifies registry key
              PID:408
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\javacpl.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\javacpl.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:4408
            • C:\Windows\SysWOW64\reg.exe
              REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\javacpl.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\javacpl.exe:*:Enabled:Windows Messanger" /f
              6⤵
              • Modifies firewall policy service
              • Modifies registry key
              PID:3384
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:4652
            • C:\Windows\SysWOW64\reg.exe
              REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
              6⤵
              • Modifies firewall policy service
              • Modifies registry key
              PID:2564
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\javacpl.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\javacpl.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:3596
            • C:\Windows\SysWOW64\reg.exe
              REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\javacpl.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\javacpl.exe:*:Enabled:Windows Messanger" /f
              6⤵
              • Modifies firewall policy service
              • Modifies registry key
              PID:4048

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\KRVHF.bat

    Filesize

    136B

    MD5

    43f169f9da64f490033d47db60eec638

    SHA1

    09a6f08a7511818e23563f31e9d1db5eea2b2a0d

    SHA256

    202c960dce433ded37036198c80a305870959706c4a4ac5a1454379a282c2803

    SHA512

    0556ba978cd5ca7e96c3e21410c375e99e1e82183d4384b46af5426c013c64aa190c5020f7154b9f5a5b42fbb30af20c74252a275c77d4596f4201625984ac8a

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

    Filesize

    2.6MB

    MD5

    fc9e5018e614906c6d906c00c5d1f4a7

    SHA1

    236c9e93de20368c34fbc02489a701eb9c6f8dba

    SHA256

    cedeca81164fc956d585503462bc9d818395d6e61a75ebab754de77cd114b712

    SHA512

    841496de473dedc2ff7adedd081eb005777519efc4471d00788605589eeb91fbce506a286e9bca6abf0e44f48f6571ae9bb0f009fe794d0fb2bd8a7234f8986e

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

    Filesize

    2.6MB

    MD5

    fc9e5018e614906c6d906c00c5d1f4a7

    SHA1

    236c9e93de20368c34fbc02489a701eb9c6f8dba

    SHA256

    cedeca81164fc956d585503462bc9d818395d6e61a75ebab754de77cd114b712

    SHA512

    841496de473dedc2ff7adedd081eb005777519efc4471d00788605589eeb91fbce506a286e9bca6abf0e44f48f6571ae9bb0f009fe794d0fb2bd8a7234f8986e

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

    Filesize

    2.6MB

    MD5

    fc9e5018e614906c6d906c00c5d1f4a7

    SHA1

    236c9e93de20368c34fbc02489a701eb9c6f8dba

    SHA256

    cedeca81164fc956d585503462bc9d818395d6e61a75ebab754de77cd114b712

    SHA512

    841496de473dedc2ff7adedd081eb005777519efc4471d00788605589eeb91fbce506a286e9bca6abf0e44f48f6571ae9bb0f009fe794d0fb2bd8a7234f8986e

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

    Filesize

    2.6MB

    MD5

    fc9e5018e614906c6d906c00c5d1f4a7

    SHA1

    236c9e93de20368c34fbc02489a701eb9c6f8dba

    SHA256

    cedeca81164fc956d585503462bc9d818395d6e61a75ebab754de77cd114b712

    SHA512

    841496de473dedc2ff7adedd081eb005777519efc4471d00788605589eeb91fbce506a286e9bca6abf0e44f48f6571ae9bb0f009fe794d0fb2bd8a7234f8986e

  • memory/1776-169-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/1776-167-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/1992-170-0x0000000000400000-0x000000000047B000-memory.dmp

    Filesize

    492KB

  • memory/1992-157-0x0000000000400000-0x000000000047B000-memory.dmp

    Filesize

    492KB

  • memory/1992-161-0x0000000000400000-0x000000000047B000-memory.dmp

    Filesize

    492KB

  • memory/1992-163-0x0000000000400000-0x000000000047B000-memory.dmp

    Filesize

    492KB

  • memory/1992-168-0x0000000000400000-0x000000000047B000-memory.dmp

    Filesize

    492KB

  • memory/3728-137-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3728-171-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3728-138-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3728-141-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3728-135-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB