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Analysis

  • max time kernel
    147s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    21/12/2024, 18:32

General

  • Target

    JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe

  • Size

    725KB

  • MD5

    30230946115d6d82a890e9e725deb161

  • SHA1

    f03ee04320db88871b36dc45ed373fb4e43f0312

  • SHA256

    7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1

  • SHA512

    47c416a43938457c71327d25c28d4afd3ec049990b24e54d4a23d2a8aed1a5d5365556d80b24a2a6e56415c4b96d71392884043a9942952ff695e343c2414d75

  • SSDEEP

    12288:hZtJpi3MRBvcV1d1jcjYVXo6/JUFWFg5vF5w5wm8dU2FI1Ee8U:hZ/plno1/c0VXo6/7ghFFVM

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 15 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Djvu family
  • 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 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:268
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3008
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\28312ce9-4d56-42af-baa7-0091f5affac2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2888
      • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
        "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2824
        • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
          "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2988

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

    4da821e0c536d80f849b2a0029751ff6

    SHA1

    e00963bc964bcdffccab4cc5238c684a66e89df7

    SHA256

    a166b94540b236eeac96eb8e9f8990cc92b38e645d034106afe5c48cb7d8c704

    SHA512

    7caa08e912e7f1862e1c71bbe0c7c009ebb0b8a095240cb1e13e6204686a968d835a13cd95e94237cf5d8bc73919a42b6c5fdb625e551d9aaa69bfdcfea94a2f

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

    Filesize

    170B

    MD5

    3ddc73e0d788a7df4d1d50860737a5f6

    SHA1

    1ee9956b7380f1bc10c0ec7aedfbbcaf873519e8

    SHA256

    107e6d243d04c0932722912c4980f3943638662f86687f7459d45e859e2cbf10

    SHA512

    33bc7341c211ca96b6a2df9e8f5c92580ff23885c972d2bcf4bc31b9e8a9f1882c08cab1669b93ee06f9ff2b2a383338f2e185fbd488d736177a043a944a393c

  • C:\Users\Admin\AppData\Local\28312ce9-4d56-42af-baa7-0091f5affac2\JaffaCakes118_7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe

    Filesize

    725KB

    MD5

    30230946115d6d82a890e9e725deb161

    SHA1

    f03ee04320db88871b36dc45ed373fb4e43f0312

    SHA256

    7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1

    SHA512

    47c416a43938457c71327d25c28d4afd3ec049990b24e54d4a23d2a8aed1a5d5365556d80b24a2a6e56415c4b96d71392884043a9942952ff695e343c2414d75

  • C:\Users\Admin\AppData\Local\Temp\CabF7F6.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • memory/268-7-0x00000000004C0000-0x0000000000551000-memory.dmp

    Filesize

    580KB

  • memory/268-0-0x00000000004C0000-0x0000000000551000-memory.dmp

    Filesize

    580KB

  • memory/268-2-0x0000000001D00000-0x0000000001E1B000-memory.dmp

    Filesize

    1.1MB

  • memory/268-1-0x00000000004C0000-0x0000000000551000-memory.dmp

    Filesize

    580KB

  • memory/2824-34-0x0000000000400000-0x00000000004BF000-memory.dmp

    Filesize

    764KB

  • memory/2824-28-0x0000000001CE0000-0x0000000001D71000-memory.dmp

    Filesize

    580KB

  • memory/2824-29-0x0000000000400000-0x00000000004BF000-memory.dmp

    Filesize

    764KB

  • memory/2988-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-67-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-65-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-66-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-63-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-48-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-50-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3008-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/3008-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3008-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3008-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3008-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB