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01/03/2025, 18:58

250301-xmhhrayp15 10

01/03/2025, 18:55

250301-xkqrcaypx7 10

Analysis

  • max time kernel
    141s
  • 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
    04/12/2024, 19:31

General

  • Target

    starticon3.exe

  • Size

    725KB

  • MD5

    e8bbb6d921b79101aea7d906a1798f3d

  • SHA1

    4fd59822cdedd1b194d27d2c01a9cde6222de1bb

  • SHA256

    7bc2928ce06e7db7bfe0bf3f2c2d2ff9df7f0a8041ea8c593dd0b912c1c3d3fd

  • SHA512

    c525e07c65c7be43aa90568f98253b397919cd0f597b1ba446fed51a578ca1aae4c93fa59e1345b20e3216a676ba35c89c67d6ced6bea68da44a53989fa4d656

  • SSDEEP

    12288:O7q+wuEST6sxwGCwuwn5vE2nyrJppqrNSP9kdrzA9PpXtuRt2BoivOnJztu3vdyB:CqrFvGjF5iZqrQag1t7+nJztuHi

Malware Config

Extracted

Family

djvu

C2

http://ring1.ug/As73yhsyU34578hxxx/SDf565g/get.php

Attributes
  • extension

    .coot

  • offline_id

    MRQ5kb5Z12tWuP3e25YoRt4PRDrJd2yuI3coott1

  • payload_url

    http://ring1.ug/files/cost/updatewin1.exe

    http://ring1.ug/files/cost/updatewin2.exe

    http://ring1.ug/files/cost/updatewin.exe

    http://ring1.ug/files/cost/3.exe

    http://ring1.ug/files/cost/4.exe

    http://ring1.ug/files/cost/5.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like photos, 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-IbdGyCKhdr 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: 0175Asd374y5iuhld

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 10 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.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 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 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\starticon3.exe
    "C:\Users\Admin\AppData\Local\Temp\starticon3.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1792
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\7a476725-87dd-470e-896f-17a56effaee5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      • System Location Discovery: System Language Discovery
      PID:2304
    • C:\Users\Admin\AppData\Local\Temp\starticon3.exe
      "C:\Users\Admin\AppData\Local\Temp\starticon3.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:4432
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1792 -s 2144
      2⤵
      • Program crash
      PID:2756
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1792 -ip 1792
    1⤵
      PID:1512

    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

      bf3fceab2c002dae29619a697cd28f30

      SHA1

      dbf6755f5e997f9cf9c490f1df09cc5f99df54ef

      SHA256

      55dbe515022ba8cc47b3d2ae70548e85e1cc4b2e73e71e64a716c9bb8ef16b3c

      SHA512

      42624112b91e496c619335e9a9db3bdbba8ddc3a9078d46a86d3a11ab2a655f8eb0fad947c367b95a1fb0153f9725e72fcc8d462616af2774d6350c7f3db4281

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

      Filesize

      170B

      MD5

      a22f82b327418bd0ea2655bf100c2644

      SHA1

      2a4eb460fd63004182c3d3fdace7f9956d00c332

      SHA256

      423220863e53f65b235a8a47157c8d614362ac12f4b4d3bc8f7d3e57dc7e25e2

      SHA512

      2e4995acfebaffdef8f84c0c1049b4a308a21c6a604ea267a4e2cd90ba32f464489195b24abf6a0921419c2c09496a9dd94e7136ed7e03036f60cb2d45201ea4

    • C:\Users\Admin\AppData\Local\7a476725-87dd-470e-896f-17a56effaee5\starticon3.exe

      Filesize

      725KB

      MD5

      e8bbb6d921b79101aea7d906a1798f3d

      SHA1

      4fd59822cdedd1b194d27d2c01a9cde6222de1bb

      SHA256

      7bc2928ce06e7db7bfe0bf3f2c2d2ff9df7f0a8041ea8c593dd0b912c1c3d3fd

      SHA512

      c525e07c65c7be43aa90568f98253b397919cd0f597b1ba446fed51a578ca1aae4c93fa59e1345b20e3216a676ba35c89c67d6ced6bea68da44a53989fa4d656

    • memory/1792-12-0x0000000000400000-0x0000000004F0E000-memory.dmp

      Filesize

      75.1MB

    • memory/1792-14-0x0000000006E40000-0x0000000006F5A000-memory.dmp

      Filesize

      1.1MB

    • memory/1792-13-0x0000000000400000-0x0000000004F0E000-memory.dmp

      Filesize

      75.1MB

    • memory/1792-15-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1792-2-0x0000000006E40000-0x0000000006F5A000-memory.dmp

      Filesize

      1.1MB

    • memory/1792-1-0x0000000006C50000-0x0000000006CEA000-memory.dmp

      Filesize

      616KB

    • memory/1792-3-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4432-21-0x0000000000400000-0x0000000004F0E000-memory.dmp

      Filesize

      75.1MB

    • memory/4432-22-0x0000000000400000-0x0000000004F0E000-memory.dmp

      Filesize

      75.1MB

    • memory/4432-24-0x0000000000400000-0x0000000004F0E000-memory.dmp

      Filesize

      75.1MB

    • memory/4432-26-0x0000000000400000-0x0000000004F0E000-memory.dmp

      Filesize

      75.1MB