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Analysis

  • max time kernel
    151s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    26/11/2022, 17:19

General

  • Target

    b0577ed39fe9f9047c390a259e0c18c55396fd88a82531fc2bbe8f6b0fb078a2.exe

  • Size

    323KB

  • MD5

    9b9bf35eedda09aa86f25333114dd1d4

  • SHA1

    f64f3f72db97b3c9119284f7ca4d641c41805aa0

  • SHA256

    b0577ed39fe9f9047c390a259e0c18c55396fd88a82531fc2bbe8f6b0fb078a2

  • SHA512

    038c21a487128b61e419f9210adabe3ddca60c8c3d2474a8c0508076f452a2aa2a0a6aff1965c8633fe8befeafe0d140fc20f05d799854e4596367fe3c2667bb

  • SSDEEP

    6144:D5tAt50415jKxZEu4ulgR/nkKmaDRZ/P/e:DnAt5PjKDLinDne

Score
10/10

Malware Config

Extracted

Path

C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\!Decrypt-All-Files-stzhzxi.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://pf5dahldauhrjxfd.onion.cab or http://pf5dahldauhrjxfd.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://pf5dahldauhrjxfd.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. NFPK5L5-C6GM3W6-ZXURFAG-BNORYZZ-U2VGNBW-YLPEBMV-DMQRTYN-QTO2MG5 PL2ZXB2-FBESVVK-YUBQIBJ-H3M4M4H-SNRQ7DU-7USB7DH-2274MII-5TQH3L7 QDXRU36-3N6QTZQ-5PASAFV-OKRD4MZ-UOUF3VK-BI2XTNY-P2SKJAZ-I6IAWI6 Follow the instructions on the server.
URLs

http://pf5dahldauhrjxfd.onion.cab

http://pf5dahldauhrjxfd.tor2web.org

http://pf5dahldauhrjxfd.onion/

Extracted

Path

C:\Users\Admin\Documents\!Decrypt-All-Files-stzhzxi.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://pf5dahldauhrjxfd.onion.cab or http://pf5dahldauhrjxfd.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://pf5dahldauhrjxfd.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. NFPK5L5-C6GM3W6-ZXURFAG-BNORYZZ-U2VGNBW-YLPEBMV-DMQRTYN-QTO2MG5 PL2ZXB2-FBESVVK-YUBQIBJ-H3M4M4H-SNRQ7DU-7USB7DH-2274MII-5TQH3L7 QDXRU36-3N6QTZQ-5PASAFV-OKRD4MZ-UOUF2GK-LR2XTNY-P2SKJAZ-I6IQV7D Follow the instructions on the server.
URLs

http://pf5dahldauhrjxfd.onion.cab

http://pf5dahldauhrjxfd.tor2web.org

http://pf5dahldauhrjxfd.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://pf5dahldauhrjxfd.onion.cab or http://pf5dahldauhrjxfd.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://pf5dahldauhrjxfd.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://pf5dahldauhrjxfd.onion.cab

http://pf5dahldauhrjxfd.tor2web.org

http://pf5dahldauhrjxfd.onion

Signatures

  • CTB-Locker

    Ransomware family which uses Tor to hide its C2 communications.

  • 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 14 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 UnmapMainImage 1 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
    • Suspicious use of UnmapMainImage
    PID:1288
    • C:\Users\Admin\AppData\Local\Temp\b0577ed39fe9f9047c390a259e0c18c55396fd88a82531fc2bbe8f6b0fb078a2.exe
      "C:\Users\Admin\AppData\Local\Temp\b0577ed39fe9f9047c390a259e0c18c55396fd88a82531fc2bbe8f6b0fb078a2.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:1340
  • 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:1784
      • C:\Windows\system32\DllHost.exe
        C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
        2⤵
          PID:904
      • 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:1680
        • 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:1528
          • C:\Windows\SysWOW64\vssadmin.exe
            vssadmin delete shadows all
            3⤵
            • Interacts with shadow copies
            PID:932
          • 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:640

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\ProgramData\Package Cache\xptppml

        Filesize

        654B

        MD5

        155f66085319542afa3a93b4e18e3add

        SHA1

        5910fd5aca17ed70fd96f40072c402c71f932050

        SHA256

        27c293207458f47d76111483d4d030716325e75a19b91137c2e6f2b7a2520efa

        SHA512

        745291e02f33d7ebd0ae4a018de91d878d53428f077cc705916fb1af92f23de7918b42af48fc322314b34d4f88833407d2780c42fec789c0fda52276f2c6c1c6

      • C:\ProgramData\Package Cache\xptppml

        Filesize

        654B

        MD5

        58c52e8663992c1e3e520b86f1b914d3

        SHA1

        8e1afc86ec5c0081fb7fd7b830bade7101d219fc

        SHA256

        2dd86f5d9b71d4fc5ea5c691fe50b64a63fd2a6d41fcdaa243cebfc7b8267ff5

        SHA512

        17f1921bbab2966a9199e4fadf592e43b422ce6bb53c7afcd164e5d71aae606a6f042523708ebc29d05698cb833ea00167ac312dfa3e3c40ea1dcb9c85b2ced8

      • C:\ProgramData\Package Cache\xptppml

        Filesize

        654B

        MD5

        60feffcc2f7423582daec690439e2135

        SHA1

        59c59d2010d93515af822c6c381bf34b04cc963f

        SHA256

        f41f2103f0a0af7d3c79e40e7be0c138785b50aefccd7265b7ec91a1dbaa02ba

        SHA512

        ee1aee9be61137a2fc52ea5645f3576a349cb64dc413baddc2f2090bf9a8fbbdb8b825b897a67681bac9fc1a49608239261123241ca9e23a31d978c056b9cd91

      • C:\ProgramData\Package Cache\xptppml

        Filesize

        654B

        MD5

        60feffcc2f7423582daec690439e2135

        SHA1

        59c59d2010d93515af822c6c381bf34b04cc963f

        SHA256

        f41f2103f0a0af7d3c79e40e7be0c138785b50aefccd7265b7ec91a1dbaa02ba

        SHA512

        ee1aee9be61137a2fc52ea5645f3576a349cb64dc413baddc2f2090bf9a8fbbdb8b825b897a67681bac9fc1a49608239261123241ca9e23a31d978c056b9cd91

      • C:\ProgramData\zlwdkgg.html

        Filesize

        63KB

        MD5

        5e77006af65f981fb4025cc9a509805a

        SHA1

        a480f9f87bf5994b7c9549d04c755e8b32c7d5bf

        SHA256

        b864567073542f66ac46e5cc4c063a6c39ee7ed72d19628f3422a8e0ca8b993e

        SHA512

        019e6637d6860f9408ed491343d349b32807c5be38ecf5d71f48c1fbc4b4554b6c19de9a72c89c648a0b78a8c80d732331242ce91ca7607cde6d2d6d63e73b7c

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

        Filesize

        323KB

        MD5

        9b9bf35eedda09aa86f25333114dd1d4

        SHA1

        f64f3f72db97b3c9119284f7ca4d641c41805aa0

        SHA256

        b0577ed39fe9f9047c390a259e0c18c55396fd88a82531fc2bbe8f6b0fb078a2

        SHA512

        038c21a487128b61e419f9210adabe3ddca60c8c3d2474a8c0508076f452a2aa2a0a6aff1965c8633fe8befeafe0d140fc20f05d799854e4596367fe3c2667bb

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

        Filesize

        323KB

        MD5

        9b9bf35eedda09aa86f25333114dd1d4

        SHA1

        f64f3f72db97b3c9119284f7ca4d641c41805aa0

        SHA256

        b0577ed39fe9f9047c390a259e0c18c55396fd88a82531fc2bbe8f6b0fb078a2

        SHA512

        038c21a487128b61e419f9210adabe3ddca60c8c3d2474a8c0508076f452a2aa2a0a6aff1965c8633fe8befeafe0d140fc20f05d799854e4596367fe3c2667bb

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

        Filesize

        323KB

        MD5

        9b9bf35eedda09aa86f25333114dd1d4

        SHA1

        f64f3f72db97b3c9119284f7ca4d641c41805aa0

        SHA256

        b0577ed39fe9f9047c390a259e0c18c55396fd88a82531fc2bbe8f6b0fb078a2

        SHA512

        038c21a487128b61e419f9210adabe3ddca60c8c3d2474a8c0508076f452a2aa2a0a6aff1965c8633fe8befeafe0d140fc20f05d799854e4596367fe3c2667bb

      • memory/600-66-0x00000000000E0000-0x0000000000157000-memory.dmp

        Filesize

        476KB

      • memory/600-72-0x000007FEFB741000-0x000007FEFB743000-memory.dmp

        Filesize

        8KB

      • memory/600-68-0x00000000000E0000-0x0000000000157000-memory.dmp

        Filesize

        476KB

      • memory/640-84-0x0000000000400000-0x000000000046D000-memory.dmp

        Filesize

        436KB

      • memory/640-83-0x0000000001EE0000-0x0000000002013000-memory.dmp

        Filesize

        1.2MB

      • memory/1340-54-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

        Filesize

        8KB

      • memory/1340-58-0x0000000000400000-0x000000000046D000-memory.dmp

        Filesize

        436KB

      • memory/1340-57-0x0000000001EC0000-0x0000000001FF3000-memory.dmp

        Filesize

        1.2MB

      • memory/1340-56-0x0000000000640000-0x0000000000742000-memory.dmp

        Filesize

        1.0MB

      • memory/1340-55-0x0000000000230000-0x0000000000235000-memory.dmp

        Filesize

        20KB

      • memory/1528-65-0x0000000000400000-0x000000000046D000-memory.dmp

        Filesize

        436KB

      • memory/1528-64-0x0000000000A20000-0x0000000000B53000-memory.dmp

        Filesize

        1.2MB