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Analysis

  • max time kernel
    145s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/12/2024, 11:41

General

  • Target

    JaffaCakes118_65209a043e885c089853a770d3533eeea584a4c0f2d556233c581c43ffbe82dc.exe

  • Size

    726KB

  • MD5

    01456817b3ff990bf8aab476c338a1ea

  • SHA1

    cdc416d77e38a7a4049b5a8ccdade1cc5c6b2192

  • SHA256

    65209a043e885c089853a770d3533eeea584a4c0f2d556233c581c43ffbe82dc

  • SHA512

    a9ba7a07e3e7ee00f830b0dba837bf63208a62189207d8a2e3b8e55be5f48336bb31f5ebd8fab5b30ecdfbc61d9e17c2de3f93f0a70a94e38af0ab5982e49945

  • SSDEEP

    12288:pJxy8Or5vCXxblkNYv9hsTg74RuZvH4t8jyjqj2J9bGj1ga:pJQ31vCXxpzcTaO0YxOb

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/fhsgtsspen6/get.php

Attributes
  • extension

    .dmay

  • offline_id

    Xe4NOamOTHZrARTiL9dfVzAylFrEWLGGbr2dngt1

  • 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-FT7BNVbXC9 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: 0458JIjdm

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_65209a043e885c089853a770d3533eeea584a4c0f2d556233c581c43ffbe82dc.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65209a043e885c089853a770d3533eeea584a4c0f2d556233c581c43ffbe82dc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3628
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65209a043e885c089853a770d3533eeea584a4c0f2d556233c581c43ffbe82dc.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65209a043e885c089853a770d3533eeea584a4c0f2d556233c581c43ffbe82dc.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:2876
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a72b6c74-f81f-4b5d-9287-d15e6e34c46f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:4656
      • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65209a043e885c089853a770d3533eeea584a4c0f2d556233c581c43ffbe82dc.exe
        "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65209a043e885c089853a770d3533eeea584a4c0f2d556233c581c43ffbe82dc.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4856
        • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65209a043e885c089853a770d3533eeea584a4c0f2d556233c581c43ffbe82dc.exe
          "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65209a043e885c089853a770d3533eeea584a4c0f2d556233c581c43ffbe82dc.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1916

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

    b4918897310ae077fc2409bcc2cee36c

    SHA1

    5ab386aa36a7cc0990e54448b0d620607efaa183

    SHA256

    1006c9b88dceda13616691004df5c11f6c6372b926a5df3eae1554cb8379d429

    SHA512

    ef2db0d6780e4c431b3bf17eb72ef150e104d712d49f29f7f73961068f8e0b01e16ac06c4edb41aad2f62bfc1fbb59d25bc1e10e4b2e882956377a74eea3f44e

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

    Filesize

    170B

    MD5

    0c182bb995e2b316c082323eddedaef0

    SHA1

    0efcc3bcab3ede67faff2159d07b9a45e8333e60

    SHA256

    51e039f653b9c98147967e9587acfc5a142a8398c72a24eacb3d6ac3c1c7a652

    SHA512

    06ed5b38a3dba9c90c045d70ad407420aad949da38c6769c080057d3aa903f3f9eb83a1bd33082d2377fe4a1849e191c8cb49a2856a7015cc49017b132934e20

  • C:\Users\Admin\AppData\Local\a72b6c74-f81f-4b5d-9287-d15e6e34c46f\JaffaCakes118_65209a043e885c089853a770d3533eeea584a4c0f2d556233c581c43ffbe82dc.exe

    Filesize

    726KB

    MD5

    01456817b3ff990bf8aab476c338a1ea

    SHA1

    cdc416d77e38a7a4049b5a8ccdade1cc5c6b2192

    SHA256

    65209a043e885c089853a770d3533eeea584a4c0f2d556233c581c43ffbe82dc

    SHA512

    a9ba7a07e3e7ee00f830b0dba837bf63208a62189207d8a2e3b8e55be5f48336bb31f5ebd8fab5b30ecdfbc61d9e17c2de3f93f0a70a94e38af0ab5982e49945

  • memory/1916-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1916-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1916-44-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1916-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1916-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1916-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1916-48-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1916-47-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1916-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1916-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1916-46-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1916-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2876-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2876-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2876-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2876-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2876-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3628-2-0x0000000002200000-0x000000000231B000-memory.dmp

    Filesize

    1.1MB

  • memory/3628-1-0x0000000000630000-0x00000000006CC000-memory.dmp

    Filesize

    624KB

  • memory/4856-23-0x0000000000400000-0x00000000004BF000-memory.dmp

    Filesize

    764KB

  • memory/4856-19-0x0000000000400000-0x00000000004BF000-memory.dmp

    Filesize

    764KB