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04-10-2024 16:44

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27-09-2024 16:44

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04-08-2024 18:04

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Analysis

  • max time kernel
    146s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-08-2024 15:52

General

  • Target

    4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe

  • Size

    787KB

  • MD5

    0b862b9c889d4bdc6f0bac7d702d8753

  • SHA1

    fdc030df123e6e6a712cbc960a2e7c63266bf040

  • SHA256

    4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7

  • SHA512

    4f7284a625b4909f9a0d80023c1dbfe3ed2de8a14fdf9a5bd3687d7e2fb21e265ee6cca613e4e6c8cab35f806501b155e6ed70a11530eb1cc78dbc38b22d3e8b

  • SSDEEP

    24576:reKt4RjnJ+wWEr55fRue+cfxiskJM0BPA:rORdGA55fkcJinM0BI

Malware Config

Extracted

Family

djvu

C2

http://astdg.top/nddddhsspen6/get.php

Attributes
  • extension

    .moqs

  • offline_id

    CatwRkqdYh2Jomn6DqwFoGgcSbDsle1xlE1NPtt1

  • payload_url

    http://securebiz.org/dl/build2.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-N3p42CffoV 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: 0318ewgfDd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 18 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP 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\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
    "C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
      "C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.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:3816
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\01fbc506-75bc-485a-a47c-571141367f88" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2984
      • C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
        "C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4596
        • C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe
          "C:\Users\Admin\AppData\Local\Temp\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2364

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    1KB

    MD5

    7fb5fa1534dcf77f2125b2403b30a0ee

    SHA1

    365d96812a69ac0a4611ea4b70a3f306576cc3ea

    SHA256

    33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

    SHA512

    a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

  • 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

    09d00fcd4e1b5c9d95d4085735ee70ba

    SHA1

    4d64e9107e3832a95611021a32317940c2ad1439

    SHA256

    3f92b71978411d1f1ec1b3a8b90b4d2c0beb08b6c6ed89c469c91c34e40bf580

    SHA512

    b2be84c79b689a10046430b6d98a35fb766c97c34d61dbae6695a195a6038aa042df454e195678970b0deb43ede6bcd3ce112a4ec57832f1a58832a9730842b0

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

    Filesize

    170B

    MD5

    91f3ef55182f891f74fa912378c33192

    SHA1

    d130e2633db2f8e10e53fa8055b1176194ff862f

    SHA256

    fbac355aec72328d3735b90b8fdfad1aef094fc08759bc7fb33c36e8f8b17a71

    SHA512

    0ee00da0d3e2615baea242a6c32ff6f4908ee82b630336ec5091928d7275f87528df5bc969e52f53cb33629f031171053131418930d4d8f550641db561d92540

  • C:\Users\Admin\AppData\Local\01fbc506-75bc-485a-a47c-571141367f88\4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7.exe

    Filesize

    787KB

    MD5

    0b862b9c889d4bdc6f0bac7d702d8753

    SHA1

    fdc030df123e6e6a712cbc960a2e7c63266bf040

    SHA256

    4bf2dace8a23551a3cd374a14b68cef6185aa18f9148dac8bf77f19f734d3ad7

    SHA512

    4f7284a625b4909f9a0d80023c1dbfe3ed2de8a14fdf9a5bd3687d7e2fb21e265ee6cca613e4e6c8cab35f806501b155e6ed70a11530eb1cc78dbc38b22d3e8b

  • memory/2044-1-0x00000000025C0000-0x0000000002658000-memory.dmp

    Filesize

    608KB

  • memory/2044-2-0x00000000026F0000-0x000000000280B000-memory.dmp

    Filesize

    1.1MB

  • memory/2364-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2364-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2364-25-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2364-43-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2364-42-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2364-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2364-40-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2364-41-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2364-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2364-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2364-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2364-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3816-20-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3816-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3816-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3816-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3816-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4596-24-0x0000000000400000-0x000000000092E000-memory.dmp

    Filesize

    5.2MB

  • memory/4596-26-0x0000000000400000-0x000000000092E000-memory.dmp

    Filesize

    5.2MB