Analysis

  • max time kernel
    125s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-12-2022 23:20

General

  • Target

    c0bff27a4891f5b51d7ed8206583b619473c40376b16ed96f294c8ffbd0e341d.exe

  • Size

    171KB

  • MD5

    90d0c8ef653543c5fd37db1a5a3d0503

  • SHA1

    2281a8e206ad4919ce2eeb8425e6ec5131bf5c6b

  • SHA256

    c0bff27a4891f5b51d7ed8206583b619473c40376b16ed96f294c8ffbd0e341d

  • SHA512

    eabb585b1f9d16ebc69a7406c8561f5300387bb9bf122693e6fbbd9cf5f1f5f9bf9ad7afd9c1b6203682334a2def0db487a4deb2a7d148afdfe3a91526391bbc

  • SSDEEP

    3072:obpDCw1p3vmLvsZIaVwiwDcIbDHDCm/DE5aXbTqT:gDCwfG1bnxLEMXb2T

Score
10/10

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 3 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 3 IoCs
  • Adds policy Run key to start application 2 TTPs 6 IoCs
  • Executes dropped EXE 6 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Adds Run key to start application 2 TTPs 6 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 4 IoCs
  • Modifies registry key 1 TTPs 9 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 63 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c0bff27a4891f5b51d7ed8206583b619473c40376b16ed96f294c8ffbd0e341d.exe
    "C:\Users\Admin\AppData\Local\Temp\c0bff27a4891f5b51d7ed8206583b619473c40376b16ed96f294c8ffbd0e341d.exe"
    1⤵
    • Modifies visibility of file extensions in Explorer
    • Modifies visiblity of hidden/system files in Explorer
    • Adds Run key to start application
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:632
    • C:\Windows\SysWOW64\REG.exe
      REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
      2⤵
      • Modifies registry key
      PID:864
    • C:\Users\Admin\AppData\Local\Temp\avscan.exe
      C:\Users\Admin\AppData\Local\Temp\avscan.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1512
      • C:\Users\Admin\AppData\Local\Temp\avscan.exe
        C:\Users\Admin\AppData\Local\Temp\avscan.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:3996
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
        3⤵
        • Checks computer location settings
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:3568
        • C:\windows\hosts.exe
          C:\windows\hosts.exe
          4⤵
          • Modifies visibility of file extensions in Explorer
          • Modifies visiblity of hidden/system files in Explorer
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in Windows directory
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:216
          • C:\Users\Admin\AppData\Local\Temp\avscan.exe
            C:\Users\Admin\AppData\Local\Temp\avscan.exe
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            PID:1240
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
            5⤵
            • Checks computer location settings
            • Modifies registry class
            • Suspicious use of WriteProcessMemory
            PID:3356
            • C:\windows\hosts.exe
              C:\windows\hosts.exe
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:5076
            • C:\Windows\SysWOW64\WScript.exe
              "C:\Windows\System32\WScript.exe" "C:\Windows\W_X_C.vbs"
              6⤵
              • Adds policy Run key to start application
              PID:2564
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:4372
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:4264
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:4284
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:4772
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Windows\W_X_C.vbs"
          4⤵
          • Adds policy Run key to start application
          PID:5036
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:3320
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:4008
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:3096
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:4508
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
      2⤵
      • Checks computer location settings
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3600
      • C:\windows\hosts.exe
        C:\windows\hosts.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:4856
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Windows\W_X_C.vbs"
        3⤵
        • Adds policy Run key to start application
        PID:4984
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4200

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

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

      Filesize

      171KB

      MD5

      04863a1526e87e6b6f324ee4276d0b7c

      SHA1

      d7590be20dd49ab96c056b16bb5522b6b990fc74

      SHA256

      ec1764853099207ef0f0ef22183ce00fad6ce335229b5621c8616058efdbef4f

      SHA512

      3e7da7df0e84168158963bed85e693f4f5cba11ddfa08c737298d4a99cd5fc605933ba892dbb8c147473ba2963433b91bc23d9a5c35e33554fc3b03ff18ecb13

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

      Filesize

      171KB

      MD5

      04863a1526e87e6b6f324ee4276d0b7c

      SHA1

      d7590be20dd49ab96c056b16bb5522b6b990fc74

      SHA256

      ec1764853099207ef0f0ef22183ce00fad6ce335229b5621c8616058efdbef4f

      SHA512

      3e7da7df0e84168158963bed85e693f4f5cba11ddfa08c737298d4a99cd5fc605933ba892dbb8c147473ba2963433b91bc23d9a5c35e33554fc3b03ff18ecb13

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

      Filesize

      171KB

      MD5

      04863a1526e87e6b6f324ee4276d0b7c

      SHA1

      d7590be20dd49ab96c056b16bb5522b6b990fc74

      SHA256

      ec1764853099207ef0f0ef22183ce00fad6ce335229b5621c8616058efdbef4f

      SHA512

      3e7da7df0e84168158963bed85e693f4f5cba11ddfa08c737298d4a99cd5fc605933ba892dbb8c147473ba2963433b91bc23d9a5c35e33554fc3b03ff18ecb13

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

      Filesize

      171KB

      MD5

      04863a1526e87e6b6f324ee4276d0b7c

      SHA1

      d7590be20dd49ab96c056b16bb5522b6b990fc74

      SHA256

      ec1764853099207ef0f0ef22183ce00fad6ce335229b5621c8616058efdbef4f

      SHA512

      3e7da7df0e84168158963bed85e693f4f5cba11ddfa08c737298d4a99cd5fc605933ba892dbb8c147473ba2963433b91bc23d9a5c35e33554fc3b03ff18ecb13

    • C:\Windows\W_X_C.vbs

      Filesize

      195B

      MD5

      0e0483d4802632100b6bfe8bc2e5d661

      SHA1

      767e0deb7dcaa7676004e6053957c36cecfeeefa

      SHA256

      81bbebb8d0e77ffffbc7b7d24afdcdce4089f4b04d1a12284eda861c25e03f9f

      SHA512

      8279b0559ca30a0adc6c8614870c3e445866c20f0617a7153cab41982b451dfe9ea44478f37b884465235714623ef26a56f5ea3d1cb81767487c494d3703ab29

    • C:\Windows\hosts.exe

      Filesize

      171KB

      MD5

      c9a18d56c6a70fd3ad3aedaeac711ed2

      SHA1

      d6443000841f28df4614080553d528308e0ce476

      SHA256

      fd23048586849bbca917a0b8cefdfc70ef708b0ed4f3d6bc77e6b40b43c1ec9a

      SHA512

      542989b86ee53c582c0a2709dfd814a52fba70ea522fe01b6ad09c599a647e8530ed5a3e8abb050f2566914f1a0f63d4bbef72fb9674e13cb55140a78ef5951d

    • C:\Windows\hosts.exe

      Filesize

      171KB

      MD5

      c9a18d56c6a70fd3ad3aedaeac711ed2

      SHA1

      d6443000841f28df4614080553d528308e0ce476

      SHA256

      fd23048586849bbca917a0b8cefdfc70ef708b0ed4f3d6bc77e6b40b43c1ec9a

      SHA512

      542989b86ee53c582c0a2709dfd814a52fba70ea522fe01b6ad09c599a647e8530ed5a3e8abb050f2566914f1a0f63d4bbef72fb9674e13cb55140a78ef5951d

    • C:\Windows\hosts.exe

      Filesize

      171KB

      MD5

      c9a18d56c6a70fd3ad3aedaeac711ed2

      SHA1

      d6443000841f28df4614080553d528308e0ce476

      SHA256

      fd23048586849bbca917a0b8cefdfc70ef708b0ed4f3d6bc77e6b40b43c1ec9a

      SHA512

      542989b86ee53c582c0a2709dfd814a52fba70ea522fe01b6ad09c599a647e8530ed5a3e8abb050f2566914f1a0f63d4bbef72fb9674e13cb55140a78ef5951d

    • C:\Windows\hosts.exe

      Filesize

      171KB

      MD5

      c9a18d56c6a70fd3ad3aedaeac711ed2

      SHA1

      d6443000841f28df4614080553d528308e0ce476

      SHA256

      fd23048586849bbca917a0b8cefdfc70ef708b0ed4f3d6bc77e6b40b43c1ec9a

      SHA512

      542989b86ee53c582c0a2709dfd814a52fba70ea522fe01b6ad09c599a647e8530ed5a3e8abb050f2566914f1a0f63d4bbef72fb9674e13cb55140a78ef5951d

    • C:\windows\hosts.exe

      Filesize

      171KB

      MD5

      c9a18d56c6a70fd3ad3aedaeac711ed2

      SHA1

      d6443000841f28df4614080553d528308e0ce476

      SHA256

      fd23048586849bbca917a0b8cefdfc70ef708b0ed4f3d6bc77e6b40b43c1ec9a

      SHA512

      542989b86ee53c582c0a2709dfd814a52fba70ea522fe01b6ad09c599a647e8530ed5a3e8abb050f2566914f1a0f63d4bbef72fb9674e13cb55140a78ef5951d

    • \??\c:\windows\W_X_C.bat

      Filesize

      336B

      MD5

      4db9f8b6175722b62ececeeeba1ce307

      SHA1

      3b3ba8414706e72a6fa19e884a97b87609e11e47

      SHA256

      d2150b9e5a4ce55e140f0ca91c4e300715d42095c8fddf58c77037cdd2cfaf78

      SHA512

      1d6dc274cf7a3dd704f840e6a5ad57ab4c4e35d5f09489aeff520bb797e1c825bac53fc335156fe41e767a46520d031855fe42fe7b175409ebe5e9e986fb9b8b

    • memory/216-148-0x0000000000000000-mapping.dmp

    • memory/864-134-0x0000000000000000-mapping.dmp

    • memory/1240-157-0x0000000000000000-mapping.dmp

    • memory/1512-135-0x0000000000000000-mapping.dmp

    • memory/2564-168-0x0000000000000000-mapping.dmp

    • memory/3096-174-0x0000000000000000-mapping.dmp

    • memory/3320-170-0x0000000000000000-mapping.dmp

    • memory/3356-161-0x0000000000000000-mapping.dmp

    • memory/3568-145-0x0000000000000000-mapping.dmp

    • memory/3600-146-0x0000000000000000-mapping.dmp

    • memory/3996-141-0x0000000000000000-mapping.dmp

    • memory/4008-172-0x0000000000000000-mapping.dmp

    • memory/4264-173-0x0000000000000000-mapping.dmp

    • memory/4284-175-0x0000000000000000-mapping.dmp

    • memory/4372-171-0x0000000000000000-mapping.dmp

    • memory/4508-176-0x0000000000000000-mapping.dmp

    • memory/4772-177-0x0000000000000000-mapping.dmp

    • memory/4856-152-0x0000000000000000-mapping.dmp

    • memory/4984-169-0x0000000000000000-mapping.dmp

    • memory/5036-167-0x0000000000000000-mapping.dmp

    • memory/5076-163-0x0000000000000000-mapping.dmp