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Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/12/2024, 19:09

General

  • Target

    JaffaCakes118_392f7ce030ab889583e63eca5b2c6bcc9bb846b945f89876fdbc772f193e3a29.exe

  • Size

    794KB

  • MD5

    004c25b803ca4778d78a42880cb3946a

  • SHA1

    1c9fe4ee956952b508faf794526ebf553af4da2f

  • SHA256

    392f7ce030ab889583e63eca5b2c6bcc9bb846b945f89876fdbc772f193e3a29

  • SHA512

    bcde735381b8b8b97cdeb463151d5d4a440dbe0d248001b9f9d577a24f57aadb2170aef93464d47ad8ac30778d7ae81192599314f47ab38a0bb223d29f150e2b

  • SSDEEP

    12288:rC5/849S8RhH2irOK23GQxq0FI3NNi3RD7k5HEtPkfjxxwCGX0VzVNVoBCG8VsnG:6z9SHmkqUI9Y3Zk5sPkfTwLXiUClVR

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .nnuz

  • offline_id

    vBBkNb2o254Xzi3oCcyyfpBNyU9yOZKLh1HH5Mt1

  • payload_url

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

    http://ugll.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-wYSZeUnrpa 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: 0485JIjdm

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 17 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_392f7ce030ab889583e63eca5b2c6bcc9bb846b945f89876fdbc772f193e3a29.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_392f7ce030ab889583e63eca5b2c6bcc9bb846b945f89876fdbc772f193e3a29.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:876
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_392f7ce030ab889583e63eca5b2c6bcc9bb846b945f89876fdbc772f193e3a29.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_392f7ce030ab889583e63eca5b2c6bcc9bb846b945f89876fdbc772f193e3a29.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:1320
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\3680d7ae-070d-40df-aa36-1e4e7a63e5b0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:3256
      • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_392f7ce030ab889583e63eca5b2c6bcc9bb846b945f89876fdbc772f193e3a29.exe
        "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_392f7ce030ab889583e63eca5b2c6bcc9bb846b945f89876fdbc772f193e3a29.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2388
        • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_392f7ce030ab889583e63eca5b2c6bcc9bb846b945f89876fdbc772f193e3a29.exe
          "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_392f7ce030ab889583e63eca5b2c6bcc9bb846b945f89876fdbc772f193e3a29.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:32

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

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

    4ca2ee8c90605ffb67094102c653287b

    SHA1

    1b6a2433b83c8e034f7282571b48bf57af2ce654

    SHA256

    2a2aa6a50f996f981cba7dba6c572f8755bbf811ddc0c0c5186fbdf3d1f89c49

    SHA512

    b05962004cd427be6987c045435c6ffe08e3440a7eac228b7846e0debdce6340eaeb79915eba665a7a8dd9ac8e66e6a196fb08ae89caf2b2f45f053a899ce219

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

    Filesize

    170B

    MD5

    fb91640f0cac3c264dbbf304ac1212cf

    SHA1

    d03cc80da4767bff3d3a8c0877c34a28fa3babc7

    SHA256

    c0bb7b907b7d4b253d4fd9cd4c2c06c63fb8c435b64c9662ee24d8c14244ac22

    SHA512

    0ac4ef9d468e5f001855702d0371cadbd6c11b7c98240d57b70ddb3e0b8b66dcb4b1173cbc9e5af263d8cebd96599390c8938a4b860e2679f5a544c9022b791d

  • C:\Users\Admin\AppData\Local\3680d7ae-070d-40df-aa36-1e4e7a63e5b0\JaffaCakes118_392f7ce030ab889583e63eca5b2c6bcc9bb846b945f89876fdbc772f193e3a29.exe

    Filesize

    794KB

    MD5

    004c25b803ca4778d78a42880cb3946a

    SHA1

    1c9fe4ee956952b508faf794526ebf553af4da2f

    SHA256

    392f7ce030ab889583e63eca5b2c6bcc9bb846b945f89876fdbc772f193e3a29

    SHA512

    bcde735381b8b8b97cdeb463151d5d4a440dbe0d248001b9f9d577a24f57aadb2170aef93464d47ad8ac30778d7ae81192599314f47ab38a0bb223d29f150e2b

  • memory/32-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-41-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-26-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/876-1-0x0000000000670000-0x000000000070D000-memory.dmp

    Filesize

    628KB

  • memory/876-2-0x00000000021F0000-0x000000000230B000-memory.dmp

    Filesize

    1.1MB

  • memory/1320-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1320-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1320-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1320-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1320-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2388-25-0x0000000000400000-0x000000000050B000-memory.dmp

    Filesize

    1.0MB

  • memory/2388-21-0x0000000000400000-0x000000000050B000-memory.dmp

    Filesize

    1.0MB