Analysis

  • max time kernel
    135s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    05-02-2022 21:17

General

  • Target

    e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16.exe

  • Size

    112KB

  • MD5

    9a7f87c91bf7e602055a5503e80e2313

  • SHA1

    193f407a2f0c7e1eaa65c54cd9115c418881de42

  • SHA256

    e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16

  • SHA512

    d798b435a92b45ffcd747316f6080d787309a7bcedeb87e2677d57220a83db73f16edb5ddcc69c869c278e969c0391fa19663a29fb2a8c3949e6ecf980bca08d

Malware Config

Extracted

Path

C:\Users\Default\# DECRYPT MY FILES #.txt

Ransom Note
C E R B E R ----------- Your documents, photos, databases and other important files have been encrypted! To decrypt your files follow the instructions: --------------------------------------------------------------------------------------- 1. Download and install the "Tor Browser" from https://www.torproject.org/ 2. Run it 3. In the "Tor Browser" open website: http://decrypttozxybarc.onion/294B-5909-31B8-0006-4D08 4. Follow the instructions at this website --------------------------------------------------------------------------------------- �...Quod me non necat me fortiorem facit.�
URLs

http://decrypttozxybarc.onion/294B-5909-31B8-0006-4D08

Signatures

  • Gozi RM3

    A heavily modified version of Gozi using RM3 loader.

  • Adds policy Run key to start application 2 TTPs 6 IoCs
  • Executes dropped EXE 5 IoCs
  • Deletes itself 1 IoCs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 24 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 2 IoCs
  • Modifies Control Panel 12 IoCs
  • Modifies Internet Explorer settings 1 TTPs 36 IoCs
  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 58 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16.exe
    "C:\Users\Admin\AppData\Local\Temp\e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16.exe"
    1⤵
    • Adds policy Run key to start application
    • Drops startup file
    • Loads dropped DLL
    • Adds Run key to start application
    • Modifies Control Panel
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1448
    • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe
      "C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe"
      2⤵
      • Adds policy Run key to start application
      • Executes dropped EXE
      • Drops startup file
      • Loads dropped DLL
      • Adds Run key to start application
      • Modifies Control Panel
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:788
      • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe
        "C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe" -watchdog
        3⤵
        • Adds policy Run key to start application
        • Executes dropped EXE
        • Adds Run key to start application
        • Modifies Control Panel
        • Suspicious use of AdjustPrivilegeToken
        PID:1960
      • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe
        "C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe" -stat 111
        3⤵
        • Adds policy Run key to start application
        • Executes dropped EXE
        • Adds Run key to start application
        • Modifies Control Panel
        • Suspicious use of AdjustPrivilegeToken
        PID:2008
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\# DECRYPT MY FILES #.txt
        3⤵
          PID:524
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\# DECRYPT MY FILES #.html
          3⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1548
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1548 CREDAT:275457 /prefetch:2
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:1560
        • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe
          "C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe" -stat 111
          3⤵
          • Adds policy Run key to start application
          • Executes dropped EXE
          • Adds Run key to start application
          • Modifies Control Panel
          • Suspicious use of AdjustPrivilegeToken
          PID:944
        • C:\Windows\System32\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\Desktop\# DECRYPT MY FILES #.vbs"
          3⤵
            PID:1072
          • C:\Windows\system32\cmd.exe
            /d /c taskkill /t /f /im "pcaui.exe" > NUL & ping -n 1 127.0.0.1 > NUL & del "C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe" > NUL
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:1644
            • C:\Windows\system32\taskkill.exe
              taskkill /t /f /im "pcaui.exe"
              4⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:964
            • C:\Windows\system32\PING.EXE
              ping -n 1 127.0.0.1
              4⤵
              • Runs ping.exe
              PID:1660
        • C:\Windows\SysWOW64\cmd.exe
          /d /c taskkill /t /f /im "e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16.exe" > NUL & ping -n 1 127.0.0.1 > NUL & del "C:\Users\Admin\AppData\Local\Temp\e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16.exe" > NUL
          2⤵
          • Deletes itself
          • Suspicious use of WriteProcessMemory
          PID:944
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /t /f /im "e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16.exe"
            3⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1608
          • C:\Windows\SysWOW64\PING.EXE
            ping -n 1 127.0.0.1
            3⤵
            • Runs ping.exe
            PID:1320
      • C:\Windows\system32\taskeng.exe
        taskeng.exe {5203D1B2-858F-4341-92FC-193EBBE4D509} S-1-5-21-3846991908-3261386348-1409841751-1000:VQVVOAJK\Admin:Interactive:[1]
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:1608
        • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe
          C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe
          2⤵
          • Adds policy Run key to start application
          • Executes dropped EXE
          • Adds Run key to start application
          • Modifies Control Panel
          • Suspicious use of AdjustPrivilegeToken
          PID:1968
      • C:\Windows\SysWOW64\DllHost.exe
        C:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}
        1⤵
          PID:1120

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\1VSJJWE3\json[1].json

          MD5

          6aae9f9d151f331526525f46fccae36a

          SHA1

          1957facf14140ebb1a79409db3754656e11e5653

          SHA256

          c699235148818f9fe1d1b247ec6d81c17741c4d7d10708b94e45a1f92ef14f17

          SHA512

          6da0e8aa7c0f7d19ad4751c00b2a00916cd00c115d8de76c3a63b85218a474a014d8523220e5950f97ad8ff03ef1908e86b776832c0e7c6d5b64aefa27911221

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\34ZL0Q4Z\json[1].json

          MD5

          6aae9f9d151f331526525f46fccae36a

          SHA1

          1957facf14140ebb1a79409db3754656e11e5653

          SHA256

          c699235148818f9fe1d1b247ec6d81c17741c4d7d10708b94e45a1f92ef14f17

          SHA512

          6da0e8aa7c0f7d19ad4751c00b2a00916cd00c115d8de76c3a63b85218a474a014d8523220e5950f97ad8ff03ef1908e86b776832c0e7c6d5b64aefa27911221

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\75VG52CD.txt

          MD5

          bafd97738894f2657504c1744e90f461

          SHA1

          77b114bde10b2d3289ff2cd7b8125190300a0b7e

          SHA256

          d8f5576e334efe6765646819916660914eeb49f16c8b8669bfaae6c8c11d2ed4

          SHA512

          6440dd61c9f100c49d56404757a60576645f96d4edc8f313fc2bb5c2cccbc55f8bcb583b2c84a5e9ff1dee0cf2cf40caf622d920d030cc6ebab42e327076051a

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\StartUp\pcaui.lnk

          MD5

          1474da9e6b2e7975ed57cfb822ab24d6

          SHA1

          56b544ede4c72c2d1ee215295b3b26e482c9a893

          SHA256

          37640ed9cec977921757382ef2c93cb3039b608fed801417704886f7ed11b5b0

          SHA512

          8760814420208b308c66dcee068099e575c477b38f9ad27f6bd0f018523a290e2f03674a21dc8168b64eeb60665038a53229d5fa45c1ef1e726c7fddcc373b29

        • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe

          MD5

          9a7f87c91bf7e602055a5503e80e2313

          SHA1

          193f407a2f0c7e1eaa65c54cd9115c418881de42

          SHA256

          e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16

          SHA512

          d798b435a92b45ffcd747316f6080d787309a7bcedeb87e2677d57220a83db73f16edb5ddcc69c869c278e969c0391fa19663a29fb2a8c3949e6ecf980bca08d

        • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe

          MD5

          9a7f87c91bf7e602055a5503e80e2313

          SHA1

          193f407a2f0c7e1eaa65c54cd9115c418881de42

          SHA256

          e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16

          SHA512

          d798b435a92b45ffcd747316f6080d787309a7bcedeb87e2677d57220a83db73f16edb5ddcc69c869c278e969c0391fa19663a29fb2a8c3949e6ecf980bca08d

        • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe

          MD5

          9a7f87c91bf7e602055a5503e80e2313

          SHA1

          193f407a2f0c7e1eaa65c54cd9115c418881de42

          SHA256

          e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16

          SHA512

          d798b435a92b45ffcd747316f6080d787309a7bcedeb87e2677d57220a83db73f16edb5ddcc69c869c278e969c0391fa19663a29fb2a8c3949e6ecf980bca08d

        • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe

          MD5

          9a7f87c91bf7e602055a5503e80e2313

          SHA1

          193f407a2f0c7e1eaa65c54cd9115c418881de42

          SHA256

          e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16

          SHA512

          d798b435a92b45ffcd747316f6080d787309a7bcedeb87e2677d57220a83db73f16edb5ddcc69c869c278e969c0391fa19663a29fb2a8c3949e6ecf980bca08d

        • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe

          MD5

          9a7f87c91bf7e602055a5503e80e2313

          SHA1

          193f407a2f0c7e1eaa65c54cd9115c418881de42

          SHA256

          e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16

          SHA512

          d798b435a92b45ffcd747316f6080d787309a7bcedeb87e2677d57220a83db73f16edb5ddcc69c869c278e969c0391fa19663a29fb2a8c3949e6ecf980bca08d

        • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe

          MD5

          9a7f87c91bf7e602055a5503e80e2313

          SHA1

          193f407a2f0c7e1eaa65c54cd9115c418881de42

          SHA256

          e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16

          SHA512

          d798b435a92b45ffcd747316f6080d787309a7bcedeb87e2677d57220a83db73f16edb5ddcc69c869c278e969c0391fa19663a29fb2a8c3949e6ecf980bca08d

        • C:\Users\Admin\Desktop\# DECRYPT MY FILES #.html

          MD5

          43ec4679616a9faa28fc43bc83e6755b

          SHA1

          9174fb72c487af5dbb5805a35d413277087630d6

          SHA256

          e8f2e764af92e835396e60ccae2b4aa6e070899171da166dd10ea4ee9246f42b

          SHA512

          ecddf2e0788872549523a83d09af9bc85cbbdcec2b43b76e53870b0f271e63ef6c08ad5989a423efd15e78d3cd7c376ab7396a831ae0da6488044de69709ff68

        • C:\Users\Admin\Desktop\# DECRYPT MY FILES #.txt

          MD5

          2f9cc202c39d3546450680ef0ca7e92c

          SHA1

          ce335f984a58a6e8f107bbec53e3dd8ba9a9937e

          SHA256

          164b6db5486818d78c566a61e4bfcf08c759f65526f530032b558dd1f6bf4608

          SHA512

          efcc7e8a6c6a223efc299419b5f000ebb50cf3e7943f48c0d39d7eb1ff4fa363952905c8351e450051976e010f373e46988cfcd6ac6445c546e046c79e1d87cd

        • C:\Users\Admin\Desktop\# DECRYPT MY FILES #.vbs

          MD5

          e9ffd9f618cbf36ad6c910c161bb8080

          SHA1

          a702b4220bbded577b4b699611bb73593b12ae71

          SHA256

          020ca4b4574a40418b8aa4c2d74b0488e9d150e8d3f5e56e5c6dcca6f7dfaaac

          SHA512

          ee87264e384579df7b74d7ac08e9a490495efa34f1a99e2d4949cb76b839c165fbb281aacae25f4ab7e911401c7bfa3fba4b0e59dd492566985fb8dbd1cf1bef

        • \Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe

          MD5

          9a7f87c91bf7e602055a5503e80e2313

          SHA1

          193f407a2f0c7e1eaa65c54cd9115c418881de42

          SHA256

          e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16

          SHA512

          d798b435a92b45ffcd747316f6080d787309a7bcedeb87e2677d57220a83db73f16edb5ddcc69c869c278e969c0391fa19663a29fb2a8c3949e6ecf980bca08d

        • \Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe

          MD5

          9a7f87c91bf7e602055a5503e80e2313

          SHA1

          193f407a2f0c7e1eaa65c54cd9115c418881de42

          SHA256

          e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16

          SHA512

          d798b435a92b45ffcd747316f6080d787309a7bcedeb87e2677d57220a83db73f16edb5ddcc69c869c278e969c0391fa19663a29fb2a8c3949e6ecf980bca08d

        • \Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\pcaui.exe

          MD5

          9a7f87c91bf7e602055a5503e80e2313

          SHA1

          193f407a2f0c7e1eaa65c54cd9115c418881de42

          SHA256

          e8c6741d3d21068535fb6bb7fe676ecaa74eee06a655c7aa915fc39c0ee7ee16

          SHA512

          d798b435a92b45ffcd747316f6080d787309a7bcedeb87e2677d57220a83db73f16edb5ddcc69c869c278e969c0391fa19663a29fb2a8c3949e6ecf980bca08d

        • memory/524-66-0x000007FEFBEE1000-0x000007FEFBEE3000-memory.dmp

          Filesize

          8KB

        • memory/1448-53-0x0000000075D61000-0x0000000075D63000-memory.dmp

          Filesize

          8KB