Analysis

  • max time kernel
    142s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250502-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/05/2025, 22:42

General

  • Target

    c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe

  • Size

    983KB

  • MD5

    e15e3cfa542459e8d87e8bfdf70a38a1

  • SHA1

    1c98fbf7b780fc8ab7f73d468ab77b41570c9665

  • SHA256

    c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286

  • SHA512

    fd55639cc4f757f90a01236b10bf33bd678ef7a141c6538a5285133aa8d610bb0bf287043717557a26d28a924f3c44fbf37c13421f27a389f2e8fc76ce4b91fe

  • SSDEEP

    24576:Fp90jN2CdssXMZ/ggHEfsLJ4qFKqyqG5nFYR1t:N0NDdssygGl94qFKqyqYa

Malware Config

Extracted

Family

djvu

C2

http://dell1.ug/hosuhf37t5iqy3guygg6w4guiner/37tiuywgw/get.php

Attributes
  • extension

    .meds

  • offline_id

    Pq9d1D32xIxjAlRK7OkLl3utdbWN8syVVEm35xt1

  • payload_url

    http://dell1.ug/files/cost/updatewin1.exe

    http://dell1.ug/files/cost/updatewin2.exe

    http://dell1.ug/files/cost/updatewin.exe

    http://dell1.ug/files/cost/3.exe

    http://dell1.ug/files/cost/4.exe

    http://dell1.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-ZFjRnJfc9f 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: 162Ad768734uygjdfg

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 9 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\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
    "C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.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:3916
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\0590c83b-a603-461f-af85-37398dca28ee" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      • System Location Discovery: System Language Discovery
      PID:4684
    • C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
      "C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:4796
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3916 -s 2132
      2⤵
      • Program crash
      PID:5092
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3916 -ip 3916
    1⤵
      PID:1228

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            1KB

            MD5

            4a90329071ae30b759d279cca342b0a6

            SHA1

            0ac7c4f3357ce87f37a3a112d6878051c875eda5

            SHA256

            fb6a7c3edcd7b97fabc18855102a39fc4d6d3f82c0fdd39b1667807b71b9c49b

            SHA512

            f0e206053d4369437c2c0f1f90f0fd03d631e4b9859d807049b41efde823d64cf4d75c28316d932360f7c03bd409e923c8bc2d4f5959361feacecfcf101ae823

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

            Filesize

            530B

            MD5

            1fbb37f79b317a9a248e7c4ce4f5bac5

            SHA1

            0ff4d709ebf17be0c28e66dc8bf74672ca28362a

            SHA256

            6fb1b8e593cb0388f67ead35313a230f524657317ea86271b3a97362e5ec6ad9

            SHA512

            287e1d62c9ceb660965c266f677c467fbb997c2f5dcd1d63e185e266488aafc3489ac1d3feec81d10f01ce4a72e61a8bc4e124f137ce8675a220aa7797002e74

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

            Filesize

            174B

            MD5

            5866f1d0b838cf549b5979e6ca79c18a

            SHA1

            6f402f3c94134696a0d9641e0eb8fb3b2cb8ec9c

            SHA256

            e81c7c55a75059088c99e6092fbd86a9a87126f8a7e8f853b9c6c69f10dc0124

            SHA512

            52d2dd2f3c8819f1a97bcdd5e8881dfca6de47dc5ba7a2e741ac5590957e81c2e351b8b53451066970e3658ad7a6cd3191f6f6a99e71d2f596ec0935232e623b

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

            Filesize

            170B

            MD5

            1c54b678b42c64f28cdcd3a20d66fbf5

            SHA1

            40187e06d838de1d317842068a2d1d51f87afdc7

            SHA256

            5bb0a9959200e64fcda17cb0597b02f360f2e59e7341c06023c4896919281355

            SHA512

            7d7d20303ca36d28a7a83562b0b17dd7d774a8f907b49d711a0d14747b3cfd578ee4c3923fc0ce4100b495e303f6e03ac23ccbefc50dffdc8210f98183e0be8d

          • C:\Users\Admin\AppData\Local\0590c83b-a603-461f-af85-37398dca28ee\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe

            Filesize

            983KB

            MD5

            e15e3cfa542459e8d87e8bfdf70a38a1

            SHA1

            1c98fbf7b780fc8ab7f73d468ab77b41570c9665

            SHA256

            c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286

            SHA512

            fd55639cc4f757f90a01236b10bf33bd678ef7a141c6538a5285133aa8d610bb0bf287043717557a26d28a924f3c44fbf37c13421f27a389f2e8fc76ce4b91fe

          • memory/3916-21-0x0000000002460000-0x000000000257A000-memory.dmp

            Filesize

            1.1MB

          • memory/3916-3-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3916-2-0x0000000002460000-0x000000000257A000-memory.dmp

            Filesize

            1.1MB

          • memory/3916-22-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/3916-1-0x0000000002390000-0x000000000245D000-memory.dmp

            Filesize

            820KB

          • memory/4796-15-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4796-14-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4796-13-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4796-23-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4796-27-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/4796-28-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB