Analysis

  • max time kernel
    89s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    23-05-2022 20:30

General

  • Target

    014cd29999543ef41ee3b37b9c7307d8e2c782111d0b3c9cb0961e88d04921eb.exe

  • Size

    661KB

  • MD5

    5d9028e036648917b4bf2413a516f593

  • SHA1

    dbdabc2417799e6cd1aadfed876dcb2a1c194ccb

  • SHA256

    014cd29999543ef41ee3b37b9c7307d8e2c782111d0b3c9cb0961e88d04921eb

  • SHA512

    8df058884ff3ceaa0f4188ff398a5478a2d70c7ca8247358ce70d01dbab6e5dca674719e4ad7d5b62708efeae3e6cb89931c52f7efa328868e8ce39667985037

Malware Config

Extracted

Family

djvu

C2

http://ring2.ug/As73yhsyU34578hxxx1/SDf565g/get.php

Attributes
  • extension

    .reha

  • offline_id

    7757TLxCRXnSjhJoq4TruFpvTlag0OKn6hPITYt1

  • payload_url

    http://ring2.ug/files/cost/updatewin1.exe

    http://ring2.ug/files/cost/updatewin2.exe

    http://ring2.ug/files/cost/updatewin.exe

    http://ring2.ug/files/cost/3.exe

    http://ring2.ug/files/cost/4.exe

    http://ring2.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-UdTNsLeiJA 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: 0199a7d6a8sda

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 4 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • 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). Likely ransomware behaviour.

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\014cd29999543ef41ee3b37b9c7307d8e2c782111d0b3c9cb0961e88d04921eb.exe
    "C:\Users\Admin\AppData\Local\Temp\014cd29999543ef41ee3b37b9c7307d8e2c782111d0b3c9cb0961e88d04921eb.exe"
    1⤵
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1884
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\8e236ab1-08c4-4280-b1d9-ff0b6570e7c4" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      PID:1700
    • C:\Users\Admin\AppData\Local\Temp\014cd29999543ef41ee3b37b9c7307d8e2c782111d0b3c9cb0961e88d04921eb.exe
      "C:\Users\Admin\AppData\Local\Temp\014cd29999543ef41ee3b37b9c7307d8e2c782111d0b3c9cb0961e88d04921eb.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      PID:1988

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    Filesize

    727B

    MD5

    263d12469947e2539c2a2a04bb056345

    SHA1

    a63fd9efc397db4cc1a82cf89b7fc8e0f6694d39

    SHA256

    102af65a56e5cea616b871487be0aa8525e3258d514ca80d3a2918c3a4f23315

    SHA512

    571bd3d3ec72023ea4ec0861baeff535fc3e71716f2c08c3305f25d615448b13a4d4bc0f7d05c500f523ad13e6ba3c2e2549891c63cc170b7f1743bc8a148df1

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    60KB

    MD5

    b9f21d8db36e88831e5352bb82c438b3

    SHA1

    4a3c330954f9f65a2f5fd7e55800e46ce228a3e2

    SHA256

    998e0209690a48ed33b79af30fc13851e3e3416bed97e3679b6030c10cab361e

    SHA512

    d4a2ac7c14227fbaf8b532398fb69053f0a0d913273f6917027c8cadbba80113fdbec20c2a7eb31b7bb57c99f9fdeccf8576be5f39346d8b564fc72fb1699476

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    471B

    MD5

    1670ab0904b0779e9046a6c0ae0ccf8b

    SHA1

    0030369be3da0ef23ac809d8963fdeb76de17eeb

    SHA256

    34a5f72509ddfed75552cbb5007e460c9c9f6dc6c511b12e32083b1a9c030ba5

    SHA512

    e0cf63ec3f97979c2ad1318954f2daecc3639c3112548796ba8996eb119443a4bca933e1353f1dfd4068de7925ef765a3a9f4f5591702c5876b9a46246415e7e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    Filesize

    402B

    MD5

    b7c05dc19b122fabc0af10b429790763

    SHA1

    2009c91eaf114754ed0de8f450a338f6552773ed

    SHA256

    3dc2e2430d9666ed5a227cdd07f40d5be4f2c4703abbfc46c4444b3fc758d6dc

    SHA512

    ce23b8edfb9aeacf1d9eb4ab7f36720df2df4dc44bd929bc31c75428146ba6cb014cfe6554a585acf4ba3b7e3a26006d3b8fe11d53a23b32a63a38b718f138ed

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    344B

    MD5

    2dcf8888fc8e44a9f8cc57cd9350bc3b

    SHA1

    5c28f962c2236e4a7f5d3f6211039660ea37c33b

    SHA256

    03458cca0bd3e67e8b140c0bdf0bbffbd076c686e55190d12465bbac7ac36560

    SHA512

    8292bd0d94852b5e4a40672bc905ea653a9981fd0aeddd8a052e60826c8f9198e83a7fde865ee2fe686de1f9c900a3125583e0b8669721ce4e8ad3864b19de12

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    396B

    MD5

    5a5b6850a2a70e532124cf8732b6a6ac

    SHA1

    76cad4be78a4e08d351715a5187ae7548d3dbab6

    SHA256

    1c5384c3f30dc65352a2d909ad5aa4c87b0f91fda1df79b57181b2cb4e177296

    SHA512

    b3d1aa011d68a578646f11b3704e3298fb8a5151e9c03bf773a559a365a176449bb4be8ef0e80349caa1da7fad453590a072a310561ed3b517c9ce29d933de46

  • C:\Users\Admin\AppData\Local\8e236ab1-08c4-4280-b1d9-ff0b6570e7c4\014cd29999543ef41ee3b37b9c7307d8e2c782111d0b3c9cb0961e88d04921eb.exe

    Filesize

    661KB

    MD5

    5d9028e036648917b4bf2413a516f593

    SHA1

    dbdabc2417799e6cd1aadfed876dcb2a1c194ccb

    SHA256

    014cd29999543ef41ee3b37b9c7307d8e2c782111d0b3c9cb0961e88d04921eb

    SHA512

    8df058884ff3ceaa0f4188ff398a5478a2d70c7ca8247358ce70d01dbab6e5dca674719e4ad7d5b62708efeae3e6cb89931c52f7efa328868e8ce39667985037

  • memory/1700-59-0x0000000000000000-mapping.dmp

  • memory/1884-58-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1884-54-0x0000000000330000-0x00000000003C1000-memory.dmp

    Filesize

    580KB

  • memory/1884-57-0x0000000000850000-0x000000000096A000-memory.dmp

    Filesize

    1.1MB

  • memory/1884-56-0x0000000000330000-0x00000000003C1000-memory.dmp

    Filesize

    580KB

  • memory/1884-55-0x00000000759E1000-0x00000000759E3000-memory.dmp

    Filesize

    8KB

  • memory/1988-62-0x0000000000330000-0x00000000003C1000-memory.dmp

    Filesize

    580KB

  • memory/1988-61-0x0000000000000000-mapping.dmp

  • memory/1988-70-0x0000000000330000-0x00000000003C1000-memory.dmp

    Filesize

    580KB

  • memory/1988-71-0x00000000006E0000-0x00000000007FA000-memory.dmp

    Filesize

    1.1MB

  • memory/1988-72-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB