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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/12/2024, 21:17

General

  • Target

    e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe

  • Size

    762KB

  • MD5

    441b51a9b3e7dc464918b58b2cf4a28d

  • SHA1

    6e3181efe967ef4ec6e5f5657cc8c6f54c785de6

  • SHA256

    e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d

  • SHA512

    6f134d3765ea847deeb61522545032041cf7a288126b63012068e0b05e69875bc6b6fcc9b10c24872c56f53bb0056430ddc0b4ca25ac4c1c2b6a5972570f442d

  • SSDEEP

    12288:9zx3jLiXztlrsxjxXntd4/ge8vlzEZ5eXvNmCh18okuikML+C2fC0EbrjJ/ST/cQ:5xixV6HagflVN/dkVkM0fC0EXjJ/ST/r

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .ghas

  • offline_id

    miqhSGmGE63yWs53FTz0fnp8eCARpnaYE3O3p2t1

  • 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-0SLhZxAjRX 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: 0445JIjdm

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\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
    "C:\Users\Admin\AppData\Local\Temp\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1912
    • C:\Users\Admin\AppData\Local\Temp\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
      "C:\Users\Admin\AppData\Local\Temp\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.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:1172
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\7044a8f7-1297-4d4f-ba3f-0f48d1781d4d" /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\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
        "C:\Users\Admin\AppData\Local\Temp\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5004
        • C:\Users\Admin\AppData\Local\Temp\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe
          "C:\Users\Admin\AppData\Local\Temp\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.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

    192f72064f34e2a76c064f5a7099bc06

    SHA1

    73786bd2c681409ecd67f0b8b03985b72dc04c0a

    SHA256

    b5ba5dce14069343bb2a9fecbde6c489f65bef71ac3e5d72d3bb22bad7980268

    SHA512

    4fee17ca9173bee2ce42b560e512b9a776a73969965e1b21153459d16d61c0a7f1e9da7920b5128bbc2c2f6036006de91700f84bd0665140c903daded2b2fea0

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

    Filesize

    170B

    MD5

    f8a0485346db96175ff2d018ede0e11a

    SHA1

    17c9090579532c4fe7c162ff4fe0c92d5c00c25b

    SHA256

    483070605879c41b25647b2c1acd728ea3d9132510497005bbbbc09002dbdfc3

    SHA512

    bb25523d0010b3dc0aee344ce6a3a0910af264231ccd7775c5ea9a008d394da561740300e6e4eefd2f15c469b217140e932403f42f3d1779cab9094b1e1302d9

  • C:\Users\Admin\AppData\Local\7044a8f7-1297-4d4f-ba3f-0f48d1781d4d\e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d.exe

    Filesize

    762KB

    MD5

    441b51a9b3e7dc464918b58b2cf4a28d

    SHA1

    6e3181efe967ef4ec6e5f5657cc8c6f54c785de6

    SHA256

    e46a45be45abafe25e65fd8fac9bea199be7441d054f29b34e156909b509105d

    SHA512

    6f134d3765ea847deeb61522545032041cf7a288126b63012068e0b05e69875bc6b6fcc9b10c24872c56f53bb0056430ddc0b4ca25ac4c1c2b6a5972570f442d

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

    Filesize

    1.2MB

  • memory/32-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-44-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-48-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-46-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

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

    Filesize

    1.2MB

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

    Filesize

    1.2MB

  • memory/32-47-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/32-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1172-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1172-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1172-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1172-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1172-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1912-2-0x00000000022D0000-0x00000000023EB000-memory.dmp

    Filesize

    1.1MB

  • memory/1912-1-0x0000000000960000-0x00000000009F4000-memory.dmp

    Filesize

    592KB

  • memory/5004-23-0x0000000000400000-0x00000000004E6000-memory.dmp

    Filesize

    920KB

  • memory/5004-19-0x0000000000400000-0x00000000004E6000-memory.dmp

    Filesize

    920KB