Analysis

  • max time kernel
    138s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    05-02-2022 21:26

General

  • Target

    8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857.exe

  • Size

    112KB

  • MD5

    65977152d62265c0f46751874bd45767

  • SHA1

    3b6aaf8ab4eb82062780202248aad45b916376ab

  • SHA256

    8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857

  • SHA512

    c36f317b7229139f9abaa1cf17b50699d3cab630b95d2fb9b59960c14d2843484378c60bd28bf841f229d23b889e180c278f007fd088948e2535e38cb2a782bb

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\# 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/0C1C-257D-7431-0006-422B 4. Follow the instructions at this website --------------------------------------------------------------------------------------- �...Quod me non necat me fortiorem facit.�
URLs

http://decrypttozxybarc.onion/0C1C-257D-7431-0006-422B

Signatures

  • Gozi RM3

    A heavily modified version of Gozi using RM3 loader.

  • Adds policy Run key to start application 2 TTPs 5 IoCs
  • Executes dropped EXE 4 IoCs
  • Deletes itself 1 IoCs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 20 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 10 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 9 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857.exe
    "C:\Users\Admin\AppData\Local\Temp\8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857.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:848
    • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\UserAccountControlSettings.exe
      "C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\UserAccountControlSettings.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:1624
      • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\UserAccountControlSettings.exe
        "C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\UserAccountControlSettings.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:1120
      • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\UserAccountControlSettings.exe
        "C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\UserAccountControlSettings.exe" -stat 126
        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:1544
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\# DECRYPT MY FILES #.txt
        3⤵
          PID:1964
        • 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:944
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:944 CREDAT:275457 /prefetch:2
            4⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:856
        • C:\Windows\System32\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\Desktop\# DECRYPT MY FILES #.vbs"
          3⤵
            PID:1548
          • C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\UserAccountControlSettings.exe
            "C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\UserAccountControlSettings.exe" -stat 126
            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:972
          • C:\Windows\system32\cmd.exe
            /d /c taskkill /t /f /im "UserAccountControlSettings.exe" > NUL & ping -n 1 127.0.0.1 > NUL & del "C:\Users\Admin\AppData\Roaming\{E7B8EC7A-1BC7-9DCC-B44A-6960964FFB54}\UserAccountControlSettings.exe" > NUL
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:708
            • C:\Windows\system32\taskkill.exe
              taskkill /t /f /im "UserAccountControlSettings.exe"
              4⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:2024
            • C:\Windows\system32\PING.EXE
              ping -n 1 127.0.0.1
              4⤵
              • Runs ping.exe
              PID:1544
        • C:\Windows\SysWOW64\cmd.exe
          /d /c taskkill /t /f /im "8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857.exe" > NUL & ping -n 1 127.0.0.1 > NUL & del "C:\Users\Admin\AppData\Local\Temp\8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857.exe" > NUL
          2⤵
          • Deletes itself
          • Suspicious use of WriteProcessMemory
          PID:1740
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /t /f /im "8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857.exe"
            3⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1680
          • C:\Windows\SysWOW64\PING.EXE
            ping -n 1 127.0.0.1
            3⤵
            • Runs ping.exe
            PID:560
      • C:\Windows\SysWOW64\DllHost.exe
        C:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}
        1⤵
          PID:1660
        • C:\Windows\system32\taskeng.exe
          taskeng.exe {B828715E-E055-47A6-A041-3A3B11270774} S-1-5-21-3846991908-3261386348-1409841751-1000:VQVVOAJK\Admin:Interactive:[1]
          1⤵
            PID:1816

          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\FNEZEKQ1.txt

            MD5

            d6445002551e6d9b6813513c586d4834

            SHA1

            f15f1f7dc941cf69e412b35a173f3c31d3c1440a

            SHA256

            46646416e66798340cf55eac9dbce0f939cba496c40e069c5c5e0c5e313af091

            SHA512

            78bf385f07366c8f08620f814b671d8d67e173980e23f9e7aafad1ea147d3c81a3cf45f3e8247d690e57933ea11115a74c874569c05463dbad7906f84445cb13

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

            MD5

            d7c9884aaea3b23e666ae6d9503b5ed8

            SHA1

            72866570800fde50d63e6b65d31863c008a9bed0

            SHA256

            013d618171c7a0872f6f71612cbbc09e1ecac3b5954c6aa631a18ae7fdd3d30d

            SHA512

            fd5684a86b59b63b279f7447ceb5c5dc19a861d535b2230d151531e69a6c59f1c310fcab850b11eda290165dca8d874feef65cb6e48dc630d1d6f5c72ac93a0e

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

            MD5

            65977152d62265c0f46751874bd45767

            SHA1

            3b6aaf8ab4eb82062780202248aad45b916376ab

            SHA256

            8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857

            SHA512

            c36f317b7229139f9abaa1cf17b50699d3cab630b95d2fb9b59960c14d2843484378c60bd28bf841f229d23b889e180c278f007fd088948e2535e38cb2a782bb

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

            MD5

            65977152d62265c0f46751874bd45767

            SHA1

            3b6aaf8ab4eb82062780202248aad45b916376ab

            SHA256

            8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857

            SHA512

            c36f317b7229139f9abaa1cf17b50699d3cab630b95d2fb9b59960c14d2843484378c60bd28bf841f229d23b889e180c278f007fd088948e2535e38cb2a782bb

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

            MD5

            65977152d62265c0f46751874bd45767

            SHA1

            3b6aaf8ab4eb82062780202248aad45b916376ab

            SHA256

            8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857

            SHA512

            c36f317b7229139f9abaa1cf17b50699d3cab630b95d2fb9b59960c14d2843484378c60bd28bf841f229d23b889e180c278f007fd088948e2535e38cb2a782bb

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

            MD5

            65977152d62265c0f46751874bd45767

            SHA1

            3b6aaf8ab4eb82062780202248aad45b916376ab

            SHA256

            8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857

            SHA512

            c36f317b7229139f9abaa1cf17b50699d3cab630b95d2fb9b59960c14d2843484378c60bd28bf841f229d23b889e180c278f007fd088948e2535e38cb2a782bb

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

            MD5

            65977152d62265c0f46751874bd45767

            SHA1

            3b6aaf8ab4eb82062780202248aad45b916376ab

            SHA256

            8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857

            SHA512

            c36f317b7229139f9abaa1cf17b50699d3cab630b95d2fb9b59960c14d2843484378c60bd28bf841f229d23b889e180c278f007fd088948e2535e38cb2a782bb

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

            MD5

            eda0d4e64bfcf82267d39fa5689b1eb3

            SHA1

            91c4e8aab58139288b10a8708bf5439dfa191e1c

            SHA256

            92d6bb43fd126466ea1273c923e8ad3798837b85f885a829c3f871e488927afb

            SHA512

            c0b74835e84b7f42d34e80d6b45d1686b6238a96a0729c32eaf7961a08316110e00b26250b4b28f1d6f90a13bf89cd876128a4fff60d37c02ca07c8fced88083

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

            MD5

            bb15712d797872c57e66fc92bec8b128

            SHA1

            6ba784999a7ae63ddf4d1472a017beb6d5966cb9

            SHA256

            24e0049c8a00e32b9bbf4eaab93d9c79f98772f7704b907fb578fb0170a85e67

            SHA512

            036f3c6fce9e5b35eaee0283fa53186e5a58f82055623895afeeaf00b97e8835e57b1fc352f4f3a7f1087e6113add7a259a3e03c6bc74dd5dd51b1bc5c057edf

          • 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}\UserAccountControlSettings.exe

            MD5

            65977152d62265c0f46751874bd45767

            SHA1

            3b6aaf8ab4eb82062780202248aad45b916376ab

            SHA256

            8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857

            SHA512

            c36f317b7229139f9abaa1cf17b50699d3cab630b95d2fb9b59960c14d2843484378c60bd28bf841f229d23b889e180c278f007fd088948e2535e38cb2a782bb

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

            MD5

            65977152d62265c0f46751874bd45767

            SHA1

            3b6aaf8ab4eb82062780202248aad45b916376ab

            SHA256

            8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857

            SHA512

            c36f317b7229139f9abaa1cf17b50699d3cab630b95d2fb9b59960c14d2843484378c60bd28bf841f229d23b889e180c278f007fd088948e2535e38cb2a782bb

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

            MD5

            65977152d62265c0f46751874bd45767

            SHA1

            3b6aaf8ab4eb82062780202248aad45b916376ab

            SHA256

            8f5be0af938a91d520c9ad6454e4eb8e562d236c6cdaae9cecfe04b28e37f857

            SHA512

            c36f317b7229139f9abaa1cf17b50699d3cab630b95d2fb9b59960c14d2843484378c60bd28bf841f229d23b889e180c278f007fd088948e2535e38cb2a782bb

          • memory/848-54-0x00000000766D1000-0x00000000766D3000-memory.dmp

            Filesize

            8KB

          • memory/1964-67-0x000007FEFC3C1000-0x000007FEFC3C3000-memory.dmp

            Filesize

            8KB