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Resubmissions

27/08/2024, 20:54

240827-zp92wsshmm 10

27/08/2024, 20:49

240827-zmfp9ssgjr 10

Analysis

  • max time kernel
    143s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    27/08/2024, 20:49

General

  • Target

    225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe

  • Size

    813KB

  • MD5

    03851cdd1e543a7f09c0e4ade384bfd4

  • SHA1

    342860ec1d18ac3b2cccd35ca2794d1db7c71353

  • SHA256

    225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5

  • SHA512

    4b6ed235558eeeffac123b707d5d9cb1af448c83162e75051459f8f9eb85cfdb9df903460faf22279df5497efab9c747fa8f1588f38312a7a364a363a3e91b38

  • SSDEEP

    12288:R+KI630b+EJrbydbNKDcEi453oh1Nj0DYK636Zstz0pW5CDmyipL+1ea0mw:Rzkb+qHSbIZz5hW6Z2z0pW9+QFmw

Malware Config

Extracted

Family

djvu

C2

http://asvb.top/nddddhsspen6/get.php

Attributes
  • extension

    .pcqq

  • offline_id

    3pNdLH1399769YerBBKCxHURRAqLhaXsGw3Fbkt1

  • payload_url

    http://asvb.top/files/penelop/updatewin1.exe

    http://asvb.top/files/penelop/updatewin2.exe

    http://asvb.top/files/penelop/updatewin.exe

    http://asvb.top/files/penelop/3.exe

    http://asvb.top/files/penelop/4.exe

    http://asvb.top/files/penelop/5.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-TVrnNufMGq Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0296Sirj

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 16 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Executes dropped EXE 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 4 IoCs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe
    "C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2736
    • C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe
      "C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2808
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\37b74952-4979-4cf6-88d7-10a0b1915679" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2780
      • C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe
        "C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2796
        • C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe
          "C:\Users\Admin\AppData\Local\Temp\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1808
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {657ED2C7-996C-4591-B858-6D319B0827B9} S-1-5-21-1385883288-3042840365-2734249351-1000:RPXOCQRF\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1484
    • C:\Users\Admin\AppData\Local\37b74952-4979-4cf6-88d7-10a0b1915679\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe
      C:\Users\Admin\AppData\Local\37b74952-4979-4cf6-88d7-10a0b1915679\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe --Task
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2208
      • C:\Users\Admin\AppData\Local\37b74952-4979-4cf6-88d7-10a0b1915679\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe
        C:\Users\Admin\AppData\Local\37b74952-4979-4cf6-88d7-10a0b1915679\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe --Task
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:2564

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    2b790979abbd6d342dbe94185b488e7f

    SHA1

    20c7c86f0dfa404b9c564e0ceecdd7e5ba863b6b

    SHA256

    19c031967ab7258bf6cd11767af0586048d46834bbd31b1a0bbb3b4576ddf20f

    SHA512

    b270ad7c4a6d6536431d73e9a4b8109b4c593a32e40a36436c91361286e13fe65a0531bb1850a03881cc8ef8291256f39167ff64b7f47efe8b2ad6d52c8afc9b

  • C:\Users\Admin\AppData\Local\37b74952-4979-4cf6-88d7-10a0b1915679\225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5.exe

    Filesize

    813KB

    MD5

    03851cdd1e543a7f09c0e4ade384bfd4

    SHA1

    342860ec1d18ac3b2cccd35ca2794d1db7c71353

    SHA256

    225e8043b4cbb1f5e64f800dce016c8dffe803bae5c596eb62bfe2cb5dac2de5

    SHA512

    4b6ed235558eeeffac123b707d5d9cb1af448c83162e75051459f8f9eb85cfdb9df903460faf22279df5497efab9c747fa8f1588f38312a7a364a363a3e91b38

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\M7GT0RRO\get[1].php

    Filesize

    3B

    MD5

    8a80554c91d9fca8acb82f023de02f11

    SHA1

    5f36b2ea290645ee34d943220a14b54ee5ea5be5

    SHA256

    ca3d163bab055381827226140568f3bef7eaac187cebd76878e0b63e9e442356

    SHA512

    ca4b6defb8adcc010050bc8b1bb8f8092c4928b8a0fba32146abcfb256e4d91672f88ca2cdf6210e754e5b8ac5e23fb023806ccd749ac8b701f79a691f03c87a

  • C:\Users\Admin\AppData\Local\Temp\Cab8B5E.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\TarAEE6.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • C:\Users\Admin\AppData\Local\bowsakkdestx.txt

    Filesize

    4B

    MD5

    c443b04d0fc26b0a5a4573a78e0082a1

    SHA1

    3c957535345645dce7190b85eb10b39da96b2518

    SHA256

    e3566b3a06430868d71e9287dfd6c6c520a3da027aabea01951d407ee131dc2f

    SHA512

    7bbf6dac485c9e59d02edabc91ff5b15bc1319cef6905c0077ee16e3b1f572b61bff85f2400bc0f5b4aeab0260bd5d68787d72c7a688d79192952f7957a44de3

  • memory/1808-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-75-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-80-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-78-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-79-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-76-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-64-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-46-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-45-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2208-96-0x00000000004E0000-0x0000000000572000-memory.dmp

    Filesize

    584KB

  • memory/2564-110-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2736-7-0x0000000000290000-0x0000000000322000-memory.dmp

    Filesize

    584KB

  • memory/2736-0-0x0000000000290000-0x0000000000322000-memory.dmp

    Filesize

    584KB

  • memory/2736-2-0x0000000001D40000-0x0000000001E5B000-memory.dmp

    Filesize

    1.1MB

  • memory/2736-1-0x0000000000290000-0x0000000000322000-memory.dmp

    Filesize

    584KB

  • memory/2796-31-0x0000000000400000-0x00000000004DD000-memory.dmp

    Filesize

    884KB

  • memory/2796-27-0x0000000000400000-0x00000000004DD000-memory.dmp

    Filesize

    884KB

  • memory/2796-26-0x0000000000550000-0x00000000005E2000-memory.dmp

    Filesize

    584KB

  • memory/2808-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2808-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2808-25-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2808-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2808-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB