Analysis

  • max time kernel
    117s
  • max time network
    110s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/09/2024, 13:33

General

  • Target

    cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe

  • Size

    676KB

  • MD5

    de660c20a214eea81b83b31734caa510

  • SHA1

    dd3c56b5b1150c66fdeb19d08a9858108f621cec

  • SHA256

    cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773

  • SHA512

    4bd1da8209bca16d25e07bbd5636d211a824bef9d7c2dfedcb4bb975d38a08e9d3af16bd0087c2c443358dc660db01ec4b2bc8b9d7c0df0476c9749407fd7456

  • SSDEEP

    12288:9kiL11aPKT1F5Vs+TVonB7krqRTUWfIVzJVUYMiGx/OHWtWOak:9ki+PKT1F5S7BgORTWJOXBSk

Malware Config

Signatures

  • Modifies firewall policy service 3 TTPs 10 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • UPX packed file 19 IoCs

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

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

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

  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

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

  • Modifies registry key 1 TTPs 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe
    "C:\Users\Admin\AppData\Local\Temp\cac95b126e4203b143878003b544c175ae0bc201ad54f2be3c4df3a00f17e773N.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3928
    • C:\Users\Admin\AppData\Local\Temp\TSNMk.exe
      "C:\Users\Admin\AppData\Local\Temp\TSNMk.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3644
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\eHGsu.bat" "
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4240
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "csrs" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\csrs.exe" /f
        3⤵
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        PID:1068
    • C:\Users\Admin\AppData\Roaming\csrs.exe
      "C:\Users\Admin\AppData\Roaming\csrs.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1096
      • C:\Users\Admin\AppData\Roaming\csrs.exe
        C:\Users\Admin\AppData\Roaming\csrs.exe
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2924
        • 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
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4080
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:1764
        • 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\csrs.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\csrs.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2928
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\csrs.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\csrs.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:2500
        • 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
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3188
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:4568
        • 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\svhost32.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\svhost32.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1512
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\svhost32.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\svhost32.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • Modifies firewall policy service
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:3904

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\TSNMk.exe

          Filesize

          12KB

          MD5

          466773bfcbd01059584cdae36e3c281c

          SHA1

          81e68615ef27cf363d6fe96582433c8a7ce8043b

          SHA256

          21f0910a1d71dfc63744474b2ba6b8248d893226576ea48791dc0cef7dd52105

          SHA512

          1088e7180a7d4ed717307c03884aebd945c5f78ffd6c4a4d7e84e504dc2da0434fe4173c63f1afd5a57e83e1783b3359ce123e85bb62699fb663bc9b1c02129f

        • C:\Users\Admin\AppData\Local\Temp\eHGsu.txt

          Filesize

          130B

          MD5

          34a635bb69f9dc2d8e8ceba2f6b25308

          SHA1

          66bbd6b4eb975af0a799c6be7aaed6917f5df10c

          SHA256

          eb18b0e443ffb00db0eb4438c0d3ec49cf67c3b7cbc9da8e25c60298c970a59a

          SHA512

          ae355a265391afe02a37d82ffb0df6664788dc4aee975678aeb524ff47f889d1e5ecab42b073093d71494c9868276dc9794d4bebce4c967d866b189c136a9545

        • C:\Users\Admin\AppData\Roaming\csrs.txt

          Filesize

          676KB

          MD5

          b1cf1c882d3beac5960f93d0638c1a12

          SHA1

          c7e2d2a6b2115cc791fd449859c688848a937aa2

          SHA256

          dcb89d3c755ffae6585bcdbb438aa9e00c1cfe682c9f246e56a318493c4527a7

          SHA512

          68e5162e4e188b0ddb1121de9df5b3e9adf39a7f7f5bd08604ad9cab263c7f21410c222e012079cb7aa9c07a34b4c53adc24dda859f098ea7b2b6b6a7b9c4dcc

        • memory/1096-48-0x0000000000400000-0x00000000005DC000-memory.dmp

          Filesize

          1.9MB

        • memory/2924-78-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/2924-73-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/2924-41-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/2924-44-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/2924-69-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/2924-46-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/2924-71-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/2924-55-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/2924-59-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/2924-62-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/2924-64-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/2924-66-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/3644-54-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/3644-10-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/3928-0-0x0000000000400000-0x00000000005DC000-memory.dmp

          Filesize

          1.9MB

        • memory/3928-38-0x0000000000400000-0x00000000005DC000-memory.dmp

          Filesize

          1.9MB