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Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/12/2024, 17:55

General

  • Target

    JaffaCakes118_8edae54f83c18181a59573cd13983e17cd9877a713e127e358a8d8a76266dbb9.exe

  • Size

    757KB

  • MD5

    ecbe71acc090c1bb8e77118f01f6c2b9

  • SHA1

    ba7d46467e5da6176db5df8f74cc905391d806fd

  • SHA256

    8edae54f83c18181a59573cd13983e17cd9877a713e127e358a8d8a76266dbb9

  • SHA512

    e54c6f08eef65cf1629ad88e660230215c9c8583b9fb93190cece199aa88bbe1fd60a940ee9ae6656e370c3eec5bab69cfcd2ca7c029be31c7b73ca9085719cf

  • SSDEEP

    12288:GneHdHA9ep0dkhbl6+NQ/d/ms/cju+nad/v8Wvf9GYxfDwOMO+9+C1JMbk45+Hk:jHJpCWzN+/Venad/v8Wv6OL+9bgk45+

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/test1/get.php

Attributes
  • extension

    .tuid

  • offline_id

    LgcOIftV0dQfFBQStVNfb8BhHy8tHRPvXwSiFwt1

  • payload_url

    http://zerit.top/dl/build2.exe

    http://fuyt.org/files/1/build3.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-FglTTmgzZT 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: 0440tOjkfd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 18 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Djvu family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 3 IoCs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8edae54f83c18181a59573cd13983e17cd9877a713e127e358a8d8a76266dbb9.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8edae54f83c18181a59573cd13983e17cd9877a713e127e358a8d8a76266dbb9.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2432
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8edae54f83c18181a59573cd13983e17cd9877a713e127e358a8d8a76266dbb9.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8edae54f83c18181a59573cd13983e17cd9877a713e127e358a8d8a76266dbb9.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3936
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\2ff3fd43-2b3e-49f6-9a20-22513e67a0b2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:1008
      • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8edae54f83c18181a59573cd13983e17cd9877a713e127e358a8d8a76266dbb9.exe
        "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8edae54f83c18181a59573cd13983e17cd9877a713e127e358a8d8a76266dbb9.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3236
        • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8edae54f83c18181a59573cd13983e17cd9877a713e127e358a8d8a76266dbb9.exe
          "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8edae54f83c18181a59573cd13983e17cd9877a713e127e358a8d8a76266dbb9.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1508

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    1KB

    MD5

    67e486b2f148a3fca863728242b6273e

    SHA1

    452a84c183d7ea5b7c015b597e94af8eef66d44a

    SHA256

    facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

    SHA512

    d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    436B

    MD5

    971c514f84bba0785f80aa1c23edfd79

    SHA1

    732acea710a87530c6b08ecdf32a110d254a54c8

    SHA256

    f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

    SHA512

    43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    174B

    MD5

    f7cc69170814febb9143376c4f171672

    SHA1

    4b9278dc690bf54d7d13e2262f46f5c67f6fac1d

    SHA256

    4103f02b401e7e1a13a18314fc9ab94d884a112e73bdf0d78d0d1623ee5d9398

    SHA512

    05ffdd0f3bb25165836267421b776d5b9c4b74805ef71b8e42d17a4ccb866dd600ebde96e64df09d12cbaf0c59bb278ad6746b7b53053b6982aa99a21ae75817

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    170B

    MD5

    70d904c3f877309017dff0a0a472f21c

    SHA1

    d99374071761e267d43ed0ca541dd05e498c5004

    SHA256

    1fcf433a83e4bd6f461fc26d1a7b5507a3df8be995bf9b9794e53466b62379ce

    SHA512

    b432ede4d53d36fc825b71b7ebed8f068ea41d84014f2a4dd3f0e4cd4c437b95c3516602de2cfe3f0eacdc26031dec7574c48d1a8fc6642889058ea8c6198d4d

  • C:\Users\Admin\AppData\Local\2ff3fd43-2b3e-49f6-9a20-22513e67a0b2\JaffaCakes118_8edae54f83c18181a59573cd13983e17cd9877a713e127e358a8d8a76266dbb9.exe

    Filesize

    757KB

    MD5

    ecbe71acc090c1bb8e77118f01f6c2b9

    SHA1

    ba7d46467e5da6176db5df8f74cc905391d806fd

    SHA256

    8edae54f83c18181a59573cd13983e17cd9877a713e127e358a8d8a76266dbb9

    SHA512

    e54c6f08eef65cf1629ad88e660230215c9c8583b9fb93190cece199aa88bbe1fd60a940ee9ae6656e370c3eec5bab69cfcd2ca7c029be31c7b73ca9085719cf

  • memory/1508-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1508-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1508-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1508-48-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1508-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1508-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1508-47-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1508-46-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1508-44-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1508-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1508-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1508-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2432-2-0x00000000021F0000-0x000000000230B000-memory.dmp

    Filesize

    1.1MB

  • memory/2432-1-0x0000000000670000-0x0000000000708000-memory.dmp

    Filesize

    608KB

  • memory/3236-23-0x0000000000400000-0x00000000004E8000-memory.dmp

    Filesize

    928KB

  • memory/3236-19-0x0000000000400000-0x00000000004E8000-memory.dmp

    Filesize

    928KB

  • memory/3936-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3936-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3936-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3936-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3936-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB