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Analysis

  • max time kernel
    148s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2024, 05:05

General

  • Target

    JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe

  • Size

    761KB

  • MD5

    00fdc50a5812e1dfe7bf314e81b86de5

  • SHA1

    e57d21a00c4af2ddfbb7b26d607076a7853e2b7a

  • SHA256

    7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70

  • SHA512

    12a468c1c072c38e8d37d77449491bd190d73af24d0109f271ec4ae93a25623190c756df29b30d0433812180200c549f3e17e6e7346fda015d2ab0ee4bea0e34

  • SSDEEP

    12288:xYHgevleClc4TlC9i05w3+zCKc3eTlfbeevTYCPjcgemwKVA:c9vsClhlwb5pCluR6mT7cge8

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_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1916
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2188
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\ef417a62-fc3d-41a3-833d-07cce3d4a147" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2912
      • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
        "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2804
        • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe
          "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2584

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

    2b908a7508ceb074f22ace3f77349e06

    SHA1

    64bf176de7ad516954cf7b793b0763f8c104facf

    SHA256

    9d0e69781da4cf20b1d6fccd89fa544e5505311085791b1ca9285d4b2fae9cca

    SHA512

    116e3315cdf07af6e96fb219b38f1ad647efcedf698548db929e5a2e95cf0ad19cf23ef8a4a5576e342cf9a2e64affee78f3fbf88c19b19d844b3fa7196e0c91

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

    Filesize

    170B

    MD5

    445914a42dd771eb9c144e36ca1719d8

    SHA1

    b3467dccc79dd498e96f033a8d5e0920fb121f1c

    SHA256

    0367465e59ff76048088e1b6bd4f80d320fa4e97575c38cf6c9a1aebab3254ee

    SHA512

    e6ab8bbd9b2799003acc010768abe73e4c7991613037ea78f652fd13c9570afea63b57ee82fba8a6a74a42106c7e8e1e5927dcd951c95c33253650d8f2c373ce

  • C:\Users\Admin\AppData\Local\Temp\CabFFF1.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\ef417a62-fc3d-41a3-833d-07cce3d4a147\JaffaCakes118_7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70.exe

    Filesize

    761KB

    MD5

    00fdc50a5812e1dfe7bf314e81b86de5

    SHA1

    e57d21a00c4af2ddfbb7b26d607076a7853e2b7a

    SHA256

    7081c7516836c80e7a92b35dc455ed24e79c1492ae1963c721e499f4af325e70

    SHA512

    12a468c1c072c38e8d37d77449491bd190d73af24d0109f271ec4ae93a25623190c756df29b30d0433812180200c549f3e17e6e7346fda015d2ab0ee4bea0e34

  • memory/1916-1-0x0000000000280000-0x0000000000311000-memory.dmp

    Filesize

    580KB

  • memory/1916-2-0x0000000001E30000-0x0000000001F4B000-memory.dmp

    Filesize

    1.1MB

  • memory/1916-0-0x0000000000280000-0x0000000000311000-memory.dmp

    Filesize

    580KB

  • memory/1916-7-0x0000000000280000-0x0000000000311000-memory.dmp

    Filesize

    580KB

  • memory/2188-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2188-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2188-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2188-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2188-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2584-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-48-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-50-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-63-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-66-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-65-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2584-67-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2804-34-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2804-29-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2804-28-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB