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Analysis

  • max time kernel
    145s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    29/12/2024, 08:57

General

  • Target

    299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe

  • Size

    814KB

  • MD5

    8db858c113bf9da58fa9a7524c7023e9

  • SHA1

    d2a8dad63d4c66d3ac446c64f7c682584ab8b069

  • SHA256

    299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0

  • SHA512

    6336cd7afa29d5b8e36fb2279af3aa3e2da9f657a1769bf7dc6b6d60cff2e785f092fba3434af39abffe45cb9215bf7b852ced79d612f53c1b819f037042606f

  • SSDEEP

    24576:QEDLISgyeNv0em9UBCV44ecLfN2LiktuUcrwwN:QQeaeE44BULikBi3

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .vvew

  • offline_id

    rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1

  • payload_url

    http://rgyui.top/dl/build2.exe

    http://acacaca.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-QsoSRIeAK6 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: 0530Jhyjd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 15 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Djvu 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.

  • 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 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
    "C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:784
    • C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
      "C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2096
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\4ad6388c-ea18-43de-8a5e-d85d4abda12a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2700
      • C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
        "C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2748
        • C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe
          "C:\Users\Admin\AppData\Local\Temp\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2888

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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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

    eafc3a8f47cfb8ea52072e96296f128b

    SHA1

    37d82f44029c58befad2d1056839b4dba2ec27ac

    SHA256

    e78a16f4aed2b5faf925559929539e1ef9c6730bd06bf1fa9de35fe2576e6740

    SHA512

    b317e8e94dd457c6c62d95d1dd0fb03da76f4584cbfe83188c63c429aa8dfbc642715f7ff4bb86b2198af343cc20b41db036a5a458a902052764010a2ce6eff7

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

    Filesize

    170B

    MD5

    7781bf187a457f67c27e06acdec78e1c

    SHA1

    345b5712028bf9c262cb0e03a9540d72c4515031

    SHA256

    18de3322ecc791e3e4156a1a274d16a06b68d34a62372c5b8abe41ad9d573699

    SHA512

    ce5a83f8565eeac4295c65f999fd5e7462362940c60a53acdc665f30f5b29c2928b42b9a65efc038af0df251a1261806b67ef58baf3ec9738872c9d9cb77d63f

  • C:\Users\Admin\AppData\Local\4ad6388c-ea18-43de-8a5e-d85d4abda12a\299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0.exe

    Filesize

    814KB

    MD5

    8db858c113bf9da58fa9a7524c7023e9

    SHA1

    d2a8dad63d4c66d3ac446c64f7c682584ab8b069

    SHA256

    299a64d47dbc636d81fc76f4c6837c5c0faf4e0a8aa8460dfb8877c2d7fa41d0

    SHA512

    6336cd7afa29d5b8e36fb2279af3aa3e2da9f657a1769bf7dc6b6d60cff2e785f092fba3434af39abffe45cb9215bf7b852ced79d612f53c1b819f037042606f

  • C:\Users\Admin\AppData\Local\Temp\CabEAFB.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • memory/784-1-0x0000000000240000-0x00000000002D2000-memory.dmp

    Filesize

    584KB

  • memory/784-2-0x00000000004E0000-0x00000000005FB000-memory.dmp

    Filesize

    1.1MB

  • memory/784-7-0x0000000000240000-0x00000000002D2000-memory.dmp

    Filesize

    584KB

  • memory/784-0-0x0000000000240000-0x00000000002D2000-memory.dmp

    Filesize

    584KB

  • memory/2096-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2096-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2096-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2096-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2096-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2748-29-0x0000000000400000-0x00000000004D9000-memory.dmp

    Filesize

    868KB

  • memory/2748-35-0x0000000000400000-0x00000000004D9000-memory.dmp

    Filesize

    868KB

  • memory/2748-28-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB

  • memory/2888-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2888-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2888-48-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2888-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2888-50-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2888-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2888-63-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2888-66-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2888-65-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2888-67-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB