Analysis

  • max time kernel
    150s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2022 11:44

General

  • Target

    b5dd6e8288017f4988f8b8d5738546b9ef90837b47be912c86bfa66d65d65dbd.exe

  • Size

    691KB

  • MD5

    2b62cdb6bcec4bff47eff437e4fc46d3

  • SHA1

    c69586cd9813701974a65a9025383c56a0b5f306

  • SHA256

    b5dd6e8288017f4988f8b8d5738546b9ef90837b47be912c86bfa66d65d65dbd

  • SHA512

    902e67858db24b95ed0f0a4457348b246d49350cd9416bc71b8b256f71791fe4491293b4853028cb7a6f09a80333835919277ab9b40e393cff84526156262dbd

  • SSDEEP

    12288:+ti86TibqhI6FhRJmYFrM9MizFXQ1jUWVH65adhEyHvNuGkvdMIEq3QusHP:+0PTCmI62YFrMpXCjUWVAdyHVuGkvdMr

Score
10/10

Malware Config

Extracted

Path

C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\Decrypt-All-Files-dxphzxi.txt

Ransom Note
Your documents, photos, databases and other important files have been encrypted with strongest encryption and unique key, generated for this computer. Private decryption key is stored on a secret Internet server and nobody can decrypt your files until you pay and obtain the private key. If you see the main locker window, follow the instructions on the locker. Overwise, it's seems that you or your antivirus deleted the locker program. Now you have the last chance to decrypt your files. Open http://w7yue5dc5amppggs.onion.cab or http://w7yue5dc5amppggs.tor2web.org in your browser. They are public gates to the secret server. If you have problems with gates, use direct connection: 1. Download Tor Browser from http://torproject.org 2. In the Tor Browser open the http://w7yue5dc5amppggs.onion/ Note that this server is available via Tor Browser only. Retry in 1 hour if site is not reachable. Copy and paste the following public key in the input form on server. Avoid missprints. YXYHTLX-7LVLFIF-CWNO32D-OKU7RWW-XWZKJBH-ZVCMPCW-JN6SOPQ-CHUP2YP VPSBQHA-7Z5S322-KGUUIWV-CU56673-E7M3O23-AYOULMB-UK2XEVC-X5JXONS TIGJGQD-IJFO3ON-7KUXQK7-C6LSH52-7H4N5U5-ZM7PUXZ-67MDT6Z-BNNYV63 Follow the instructions on the server.
URLs

http://w7yue5dc5amppggs.onion.cab

http://w7yue5dc5amppggs.tor2web.org

http://w7yue5dc5amppggs.onion/

Extracted

Path

C:\Users\Admin\Documents\Decrypt-All-Files-dxphzxi.txt

Ransom Note
Your documents, photos, databases and other important files have been encrypted with strongest encryption and unique key, generated for this computer. Private decryption key is stored on a secret Internet server and nobody can decrypt your files until you pay and obtain the private key. If you see the main locker window, follow the instructions on the locker. Overwise, it's seems that you or your antivirus deleted the locker program. Now you have the last chance to decrypt your files. Open http://w7yue5dc5amppggs.onion.cab or http://w7yue5dc5amppggs.tor2web.org in your browser. They are public gates to the secret server. If you have problems with gates, use direct connection: 1. Download Tor Browser from http://torproject.org 2. In the Tor Browser open the http://w7yue5dc5amppggs.onion/ Note that this server is available via Tor Browser only. Retry in 1 hour if site is not reachable. Copy and paste the following public key in the input form on server. Avoid missprints. YXYHTLX-7LVLFIF-CWNO32D-OKU7RWW-XWZKJBH-ZVCMPCW-JN6SOPQ-CHUP2YP VPSBQHA-7Z5S322-KGUUIWV-CU56673-E7M3O23-AYOULMB-UK2XEVC-X5JXONS TIGJGQD-IJFO3ON-7KUXQK7-C6LSH52-7H4N4H5-R57PUXZ-67MDT6Z-BNNYATB Follow the instructions on the server.
URLs

http://w7yue5dc5amppggs.onion.cab

http://w7yue5dc5amppggs.tor2web.org

http://w7yue5dc5amppggs.onion/

Extracted

Path

C:\ProgramData\zlwdkgg.html

Ransom Note
Your documents, photos, databases and other important files have been encrypted with strongest encryption and unique key, generated for this computer. Private decryption key is stored on a secret Internet server and nobody can decrypt your files until you pay and obtain the private key. If you see the main locker window, follow the instructions on the locker. Overwise, it's seems that you or your antivirus deleted the locker program. Now you have the last chance to decrypt your files. Open http://w7yue5dc5amppggs.onion.cab or http://w7yue5dc5amppggs.tor2web.org in your browser. They are public gates to the secret server. If you have problems with gates, use direct connection: 1. Download Tor Browser from http://torproject.org. 2. In the Tor Browser open the http://w7yue5dc5amppggs.onion Note that this server is available via Tor Browser only. Retry in 1 hour if site is not reachable. Copy and paste the following public key in the input form on server. Avoid missprints. Follow the instructions on the server. The list of your encrypted files: Path File
URLs

http://w7yue5dc5amppggs.onion.cab

http://w7yue5dc5amppggs.tor2web.org

http://w7yue5dc5amppggs.onion

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Executes dropped EXE 2 IoCs
  • Modifies extensions of user files 3 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops desktop.ini file(s) 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 20 IoCs
  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Sets desktop wallpaper using registry
    • Suspicious use of AdjustPrivilegeToken
    PID:1288
    • C:\Users\Admin\AppData\Local\Temp\b5dd6e8288017f4988f8b8d5738546b9ef90837b47be912c86bfa66d65d65dbd.exe
      "C:\Users\Admin\AppData\Local\Temp\b5dd6e8288017f4988f8b8d5738546b9ef90837b47be912c86bfa66d65d65dbd.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:1204
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k DcomLaunch
    1⤵
    • Modifies extensions of user files
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Modifies data under HKEY_USERS
    • Suspicious use of WriteProcessMemory
    PID:600
    • C:\Windows\system32\DllHost.exe
      C:\Windows\system32\DllHost.exe /Processid:{AB8902B4-09CA-4BB6-B78D-A8F59079A8D5}
      2⤵
        PID:1376
      • C:\Windows\system32\DllHost.exe
        C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
        2⤵
          PID:1852
      • C:\Windows\system32\taskeng.exe
        taskeng.exe {9B542B09-DC55-4B33-90E2-F1FDE73DAABD} S-1-5-18:NT AUTHORITY\System:Service:
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:1036
        • C:\Users\Admin\AppData\Local\Temp\pdfisga.exe
          C:\Users\Admin\AppData\Local\Temp\pdfisga.exe
          2⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:276
          • C:\Windows\SysWOW64\vssadmin.exe
            vssadmin delete shadows all
            3⤵
            • Interacts with shadow copies
            PID:2020
          • C:\Users\Admin\AppData\Local\Temp\pdfisga.exe
            "C:\Users\Admin\AppData\Local\Temp\pdfisga.exe" -u
            3⤵
            • Executes dropped EXE
            • Checks computer location settings
            • Drops file in System32 directory
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of SetWindowsHookEx
            PID:1644

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\Microsoft Help\xptppml

        Filesize

        654B

        MD5

        e897e9d37dca9003c211398bb87b7a91

        SHA1

        3720cdc11046d53235af5bcab68c984c143cf772

        SHA256

        3c0ca1ae263414bb5459d8685eafca9f0c937826b72a9a2ff7e77a000726da17

        SHA512

        b6e19af88421558582a5da6a711716234d3b115ea05a45c4d1ee894207dcd22caf382146905b8fcef79f7eb6abe492cd12179651f6fffd34a279493bf6d55421

      • C:\ProgramData\Microsoft Help\xptppml

        Filesize

        654B

        MD5

        999b88e7e9a5088f5c0c742d7c547eca

        SHA1

        dfbc74cbdb700b937729be013390c3f8cca99c38

        SHA256

        c0aa6123e09846afde9f1c859ce68ac395c099d0f35ed39bcbaaa197dd5120ac

        SHA512

        b9d61ab6588dff4a26cb86ba0726855588bf8699eab8ed1fe26e9748fc8ec2b885cce1d7bd9a6ec9380845f0f71fa50f06888ddb74513a77332d6bb712bfc01d

      • C:\ProgramData\Microsoft Help\xptppml

        Filesize

        654B

        MD5

        1c9a8cc8316e363df548e060c4c6a9f9

        SHA1

        8aebb5edc2a8647445ef997d5ba280511c7f09f7

        SHA256

        6b4c6e920838d6fe0b7a7cadfa6a7c162ad1b69d01cb7c87c51d466d3a5b16e5

        SHA512

        bc62d215338afd325986017043da89f31b28ae7de6fef0b3d5848fa5423325c2d6db124b688ffbe083af896f3f65c5e72561ba4df125d9c052abd6474e26bc6b

      • C:\ProgramData\Microsoft Help\xptppml

        Filesize

        654B

        MD5

        1c9a8cc8316e363df548e060c4c6a9f9

        SHA1

        8aebb5edc2a8647445ef997d5ba280511c7f09f7

        SHA256

        6b4c6e920838d6fe0b7a7cadfa6a7c162ad1b69d01cb7c87c51d466d3a5b16e5

        SHA512

        bc62d215338afd325986017043da89f31b28ae7de6fef0b3d5848fa5423325c2d6db124b688ffbe083af896f3f65c5e72561ba4df125d9c052abd6474e26bc6b

      • C:\ProgramData\zlwdkgg.html

        Filesize

        63KB

        MD5

        f822550e9af790f1c3170e2d4aa99e3e

        SHA1

        ac99a4ae1d37a263ca32be6e220d3ff58ca2ed1b

        SHA256

        b0d5501da5c8a683104f46c1302e13f68b8a7a4c4d1dfa55d74e4ef2dae33e52

        SHA512

        77ed4f798d1be1b249f4237f904896a3d8c605f0d647981f832da4c113342025fbf0af5fb7089f7e72bd04de9a894e2979f3238a521d76bb1a6ee5b3efb9bb81

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

        Filesize

        691KB

        MD5

        2b62cdb6bcec4bff47eff437e4fc46d3

        SHA1

        c69586cd9813701974a65a9025383c56a0b5f306

        SHA256

        b5dd6e8288017f4988f8b8d5738546b9ef90837b47be912c86bfa66d65d65dbd

        SHA512

        902e67858db24b95ed0f0a4457348b246d49350cd9416bc71b8b256f71791fe4491293b4853028cb7a6f09a80333835919277ab9b40e393cff84526156262dbd

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

        Filesize

        691KB

        MD5

        2b62cdb6bcec4bff47eff437e4fc46d3

        SHA1

        c69586cd9813701974a65a9025383c56a0b5f306

        SHA256

        b5dd6e8288017f4988f8b8d5738546b9ef90837b47be912c86bfa66d65d65dbd

        SHA512

        902e67858db24b95ed0f0a4457348b246d49350cd9416bc71b8b256f71791fe4491293b4853028cb7a6f09a80333835919277ab9b40e393cff84526156262dbd

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

        Filesize

        691KB

        MD5

        2b62cdb6bcec4bff47eff437e4fc46d3

        SHA1

        c69586cd9813701974a65a9025383c56a0b5f306

        SHA256

        b5dd6e8288017f4988f8b8d5738546b9ef90837b47be912c86bfa66d65d65dbd

        SHA512

        902e67858db24b95ed0f0a4457348b246d49350cd9416bc71b8b256f71791fe4491293b4853028cb7a6f09a80333835919277ab9b40e393cff84526156262dbd

      • memory/276-60-0x0000000000000000-mapping.dmp

      • memory/276-66-0x0000000001070000-0x000000000129D000-memory.dmp

        Filesize

        2.2MB

      • memory/600-67-0x00000000000E0000-0x000000000014D000-memory.dmp

        Filesize

        436KB

      • memory/600-73-0x000007FEFB741000-0x000007FEFB743000-memory.dmp

        Filesize

        8KB

      • memory/600-69-0x00000000000E0000-0x000000000014D000-memory.dmp

        Filesize

        436KB

      • memory/1204-54-0x0000000000400000-0x00000000004AF000-memory.dmp

        Filesize

        700KB

      • memory/1204-58-0x00000000021C0000-0x00000000023ED000-memory.dmp

        Filesize

        2.2MB

      • memory/1204-57-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

        Filesize

        8KB

      • memory/1204-56-0x0000000001FC0000-0x00000000021BC000-memory.dmp

        Filesize

        2.0MB

      • memory/1204-55-0x0000000000401000-0x00000000004A2000-memory.dmp

        Filesize

        644KB

      • memory/1376-72-0x0000000000000000-mapping.dmp

      • memory/1644-80-0x0000000000000000-mapping.dmp

      • memory/1644-86-0x0000000002380000-0x00000000025AD000-memory.dmp

        Filesize

        2.2MB

      • memory/1852-88-0x0000000000000000-mapping.dmp

      • memory/2020-79-0x0000000000000000-mapping.dmp