Analysis

  • max time kernel
    125s
  • max time network
    110s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    13-05-2021 12:57

General

  • Target

    3facc445894405f975ef70d3993f6d02c7fe3d143e5ee363bb7d578c6abb0db1.exe

  • Size

    375KB

  • MD5

    bc22725a285b7498e1b6389462cc59b4

  • SHA1

    f87eee2da7ed9e90fba9453138e57bb983910be0

  • SHA256

    3facc445894405f975ef70d3993f6d02c7fe3d143e5ee363bb7d578c6abb0db1

  • SHA512

    39b73760ddd3bca6654beb7afdbbe94035a6f07eccc4bac9a64261dba67228b86115d213ec69c89d9b68b5b910a0bb70c6f77d52f811367fe207475a38c5783e

Score
10/10

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs
  • Adds policy Run key to start application 2 TTPs 6 IoCs
  • Executes dropped EXE 6 IoCs
  • 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\3facc445894405f975ef70d3993f6d02c7fe3d143e5ee363bb7d578c6abb0db1.exe
    "C:\Users\Admin\AppData\Local\Temp\3facc445894405f975ef70d3993f6d02c7fe3d143e5ee363bb7d578c6abb0db1.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2208
    • C:\Windows\SysWOW64\REG.exe
      REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
      2⤵
      • Modifies registry key
      PID:1588
    • C:\Users\Admin\AppData\Local\Temp\avscan.exe
      C:\Users\Admin\AppData\Local\Temp\avscan.exe
      2⤵
      • 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:3836
      • 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:1104
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
        3⤵
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:3952
        • C:\windows\hosts.exe
          C:\windows\hosts.exe
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetWindowsHookEx
          PID:1680
        • 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:1104
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:1132
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:4064
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:856
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:2348
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
      2⤵
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:60
      • C:\windows\hosts.exe
        C:\windows\hosts.exe
        3⤵
        • 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:2784
        • C:\Users\Admin\AppData\Local\Temp\avscan.exe
          C:\Users\Admin\AppData\Local\Temp\avscan.exe
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetWindowsHookEx
          PID:1256
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
          4⤵
          • Modifies registry class
          • Suspicious use of WriteProcessMemory
          PID:2420
          • C:\windows\hosts.exe
            C:\windows\hosts.exe
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            PID:3496
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Windows\W_X_C.vbs"
            5⤵
            • Adds policy Run key to start application
            PID:1684
        • C:\Windows\SysWOW64\REG.exe
          REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
          4⤵
          • Modifies registry key
          PID:1684
        • C:\Windows\SysWOW64\REG.exe
          REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
          4⤵
          • Modifies registry key
          PID:2756
        • C:\Windows\SysWOW64\REG.exe
          REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
          4⤵
          • Modifies registry key
          PID:396
        • C:\Windows\SysWOW64\REG.exe
          REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
          4⤵
          • Modifies registry key
          PID:3860
      • 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:1752
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {3eef301f-b596-4c0b-bd92-013beafce793} -Embedding
    1⤵
      PID:348
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:4036

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Hidden Files and Directories

      2
      T1158

      Registry Run Keys / Startup Folder

      2
      T1060

      Defense Evasion

      Hidden Files and Directories

      2
      T1158

      Modify Registry

      5
      T1112

      Discovery

      System Information Discovery

      1
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\avscan.exe
        MD5

        6de9af0e4728e6c1e130f0412f2d6b28

        SHA1

        6a435156c35d4bc57daf48c2d49076b28638111a

        SHA256

        970bc0a44c85aa5c64482897ac813a89eef7618c30dc57fa2c80b6f3afa32c86

        SHA512

        c2432984b06d57d90fb6b4278fefe41b3f9faac0614807ca6ac77c22c004f6ba4dd8b4e427ab6cf8a7ec9da409732a14a22051d935a56b89d73597e00366080c

      • C:\Users\Admin\AppData\Local\Temp\avscan.exe
        MD5

        6de9af0e4728e6c1e130f0412f2d6b28

        SHA1

        6a435156c35d4bc57daf48c2d49076b28638111a

        SHA256

        970bc0a44c85aa5c64482897ac813a89eef7618c30dc57fa2c80b6f3afa32c86

        SHA512

        c2432984b06d57d90fb6b4278fefe41b3f9faac0614807ca6ac77c22c004f6ba4dd8b4e427ab6cf8a7ec9da409732a14a22051d935a56b89d73597e00366080c

      • C:\Users\Admin\AppData\Local\Temp\avscan.exe
        MD5

        6de9af0e4728e6c1e130f0412f2d6b28

        SHA1

        6a435156c35d4bc57daf48c2d49076b28638111a

        SHA256

        970bc0a44c85aa5c64482897ac813a89eef7618c30dc57fa2c80b6f3afa32c86

        SHA512

        c2432984b06d57d90fb6b4278fefe41b3f9faac0614807ca6ac77c22c004f6ba4dd8b4e427ab6cf8a7ec9da409732a14a22051d935a56b89d73597e00366080c

      • C:\Users\Admin\AppData\Local\Temp\avscan.exe
        MD5

        6de9af0e4728e6c1e130f0412f2d6b28

        SHA1

        6a435156c35d4bc57daf48c2d49076b28638111a

        SHA256

        970bc0a44c85aa5c64482897ac813a89eef7618c30dc57fa2c80b6f3afa32c86

        SHA512

        c2432984b06d57d90fb6b4278fefe41b3f9faac0614807ca6ac77c22c004f6ba4dd8b4e427ab6cf8a7ec9da409732a14a22051d935a56b89d73597e00366080c

      • C:\Windows\W_X_C.vbs
        MD5

        1ef29533f8090ea70ed13bfd4067b045

        SHA1

        e132d5ddf40ffab8aceaca25a20d8808f7edf34d

        SHA256

        f2a4b9f1fd74f03ebf937c3775d7038214c64d798f5a70d462ee39185c55ba02

        SHA512

        991821088f965608f3f5d33b15c283a89ff2a4f3703d73253ff346cd78473009c588ae6671872653f67eb5454593085eccba1f204f28ce60013c4c4af95cd91c

      • C:\Windows\hosts.exe
        MD5

        c33419c36ea991c0aec60b63b23d8a9a

        SHA1

        9a0026726dd1ce37ea3b560b4d51b02532652ff8

        SHA256

        f3938d67a22d8a1bc491501a0e90dbb4f84f247f8719dc1f82b27d30e8496741

        SHA512

        86e7ffc14d5799e34d26ec13969ec5431a54d3f3ea1fb0a9da00bba0275bfac14f5c266633beff16d1c47fc82feaa8d10230e19c2c6293384eeba6cd060d9656

      • C:\Windows\hosts.exe
        MD5

        c33419c36ea991c0aec60b63b23d8a9a

        SHA1

        9a0026726dd1ce37ea3b560b4d51b02532652ff8

        SHA256

        f3938d67a22d8a1bc491501a0e90dbb4f84f247f8719dc1f82b27d30e8496741

        SHA512

        86e7ffc14d5799e34d26ec13969ec5431a54d3f3ea1fb0a9da00bba0275bfac14f5c266633beff16d1c47fc82feaa8d10230e19c2c6293384eeba6cd060d9656

      • C:\Windows\hosts.exe
        MD5

        c33419c36ea991c0aec60b63b23d8a9a

        SHA1

        9a0026726dd1ce37ea3b560b4d51b02532652ff8

        SHA256

        f3938d67a22d8a1bc491501a0e90dbb4f84f247f8719dc1f82b27d30e8496741

        SHA512

        86e7ffc14d5799e34d26ec13969ec5431a54d3f3ea1fb0a9da00bba0275bfac14f5c266633beff16d1c47fc82feaa8d10230e19c2c6293384eeba6cd060d9656

      • C:\Windows\hosts.exe
        MD5

        c33419c36ea991c0aec60b63b23d8a9a

        SHA1

        9a0026726dd1ce37ea3b560b4d51b02532652ff8

        SHA256

        f3938d67a22d8a1bc491501a0e90dbb4f84f247f8719dc1f82b27d30e8496741

        SHA512

        86e7ffc14d5799e34d26ec13969ec5431a54d3f3ea1fb0a9da00bba0275bfac14f5c266633beff16d1c47fc82feaa8d10230e19c2c6293384eeba6cd060d9656

      • C:\windows\hosts.exe
        MD5

        c33419c36ea991c0aec60b63b23d8a9a

        SHA1

        9a0026726dd1ce37ea3b560b4d51b02532652ff8

        SHA256

        f3938d67a22d8a1bc491501a0e90dbb4f84f247f8719dc1f82b27d30e8496741

        SHA512

        86e7ffc14d5799e34d26ec13969ec5431a54d3f3ea1fb0a9da00bba0275bfac14f5c266633beff16d1c47fc82feaa8d10230e19c2c6293384eeba6cd060d9656

      • \??\c:\windows\W_X_C.bat
        MD5

        4db9f8b6175722b62ececeeeba1ce307

        SHA1

        3b3ba8414706e72a6fa19e884a97b87609e11e47

        SHA256

        d2150b9e5a4ce55e140f0ca91c4e300715d42095c8fddf58c77037cdd2cfaf78

        SHA512

        1d6dc274cf7a3dd704f840e6a5ad57ab4c4e35d5f09489aeff520bb797e1c825bac53fc335156fe41e767a46520d031855fe42fe7b175409ebe5e9e986fb9b8b

      • memory/60-138-0x0000000000000000-mapping.dmp
      • memory/396-185-0x0000000000000000-mapping.dmp
      • memory/856-184-0x0000000000000000-mapping.dmp
      • memory/1104-131-0x0000000066000000-0x0000000066153000-memory.dmp
        Filesize

        1.3MB

      • memory/1104-171-0x0000000000000000-mapping.dmp
      • memory/1104-129-0x0000000000000000-mapping.dmp
      • memory/1132-180-0x0000000000000000-mapping.dmp
      • memory/1256-151-0x0000000066000000-0x0000000066153000-memory.dmp
        Filesize

        1.3MB

      • memory/1256-149-0x0000000000000000-mapping.dmp
      • memory/1588-120-0x0000000000000000-mapping.dmp
      • memory/1680-159-0x0000000066000000-0x0000000066153000-memory.dmp
        Filesize

        1.3MB

      • memory/1680-156-0x0000000000000000-mapping.dmp
      • memory/1684-177-0x0000000000000000-mapping.dmp
      • memory/1684-181-0x0000000000000000-mapping.dmp
      • memory/1752-160-0x0000000000000000-mapping.dmp
      • memory/2208-115-0x0000000000400000-0x0000000000425000-memory.dmp
        Filesize

        148KB

      • memory/2208-116-0x0000000000030000-0x0000000000034000-memory.dmp
        Filesize

        16KB

      • memory/2208-117-0x0000000000401000-0x000000000041D000-memory.dmp
        Filesize

        112KB

      • memory/2208-114-0x0000000066000000-0x0000000066153000-memory.dmp
        Filesize

        1.3MB

      • memory/2348-186-0x0000000000000000-mapping.dmp
      • memory/2420-155-0x0000000000000000-mapping.dmp
      • memory/2756-183-0x0000000000000000-mapping.dmp
      • memory/2784-142-0x0000000000000000-mapping.dmp
      • memory/2784-145-0x0000000066000000-0x0000000066153000-memory.dmp
        Filesize

        1.3MB

      • memory/3496-170-0x0000000000000000-mapping.dmp
      • memory/3496-173-0x0000000066000000-0x0000000066153000-memory.dmp
        Filesize

        1.3MB

      • memory/3836-121-0x0000000000000000-mapping.dmp
      • memory/3836-124-0x0000000066000000-0x0000000066153000-memory.dmp
        Filesize

        1.3MB

      • memory/3860-187-0x0000000000000000-mapping.dmp
      • memory/3952-136-0x0000000000000000-mapping.dmp
      • memory/4064-182-0x0000000000000000-mapping.dmp