Analysis

  • max time kernel
    148s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    31/12/2023, 12:50

General

  • Target

    04535d027119e09a31f99b3662094339.exe

  • Size

    773KB

  • MD5

    04535d027119e09a31f99b3662094339

  • SHA1

    c8832221b62edb8255c2b81be0cf776884459148

  • SHA256

    bd2364f4d561136775d9ac4fd72e4e14bfed546ea1acc3fd7685fb5d7ff278d8

  • SHA512

    b1e2c0e90fd926e1e8dbb21fb733e9c020ea7c14540b96844c92c87f2310c584b2020b765649b4959d435093c7ef05f60c3a24cfe527fa20c2618768f2c1c86e

  • SSDEEP

    12288:M9hSDrtdRYaFv2qOrppPKFT+jZhl0rObY8BPAi:8hSD5dR7uqkpqT+7lCqBPA

Malware Config

Extracted

Family

djvu

C2

http://astdg.top/nddddhsspen6/get.php

Attributes
  • extension

    .moqs

  • offline_id

    CatwRkqdYh2Jomn6DqwFoGgcSbDsle1xlE1NPtt1

  • payload_url

    http://securebiz.org/dl/build2.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-N3p42CffoV 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: 0318ewgfDd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 15 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.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\04535d027119e09a31f99b3662094339.exe
    "C:\Users\Admin\AppData\Local\Temp\04535d027119e09a31f99b3662094339.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2932
    • C:\Users\Admin\AppData\Local\Temp\04535d027119e09a31f99b3662094339.exe
      "C:\Users\Admin\AppData\Local\Temp\04535d027119e09a31f99b3662094339.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3032
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\fa58cfe6-dab8-48c6-9834-ef727c25aedc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2020
      • C:\Users\Admin\AppData\Local\Temp\04535d027119e09a31f99b3662094339.exe
        "C:\Users\Admin\AppData\Local\Temp\04535d027119e09a31f99b3662094339.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2976
        • C:\Users\Admin\AppData\Local\Temp\04535d027119e09a31f99b3662094339.exe
          "C:\Users\Admin\AppData\Local\Temp\04535d027119e09a31f99b3662094339.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          PID:1440

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    1KB

    MD5

    6cbd0d529a079e1d1ebc079bfaf56ece

    SHA1

    6ba9a0a207022d3f1546fe5a7828ea213a0f3f74

    SHA256

    bc2ffb49d213a2717a83c6693812fbb2d182823bf6a5db9c1c8d0c684260c501

    SHA512

    0e6c899f8c827ad980ae4dbf4a0c7a2f8952319a9580d5a1401ed5e79621b031fd8e673b3401e00da3eb5d055d6b3117628852ea1e1fd36b67355507080f5740

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

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

    Filesize

    724B

    MD5

    8202a1cd02e7d69597995cabbe881a12

    SHA1

    8858d9d934b7aa9330ee73de6c476acf19929ff6

    SHA256

    58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

    SHA512

    97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    1KB

    MD5

    a266bb7dcc38a562631361bbf61dd11b

    SHA1

    3b1efd3a66ea28b16697394703a72ca340a05bd5

    SHA256

    df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

    SHA512

    0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    410B

    MD5

    aa477e7069887c44d2efb5314642e226

    SHA1

    b9936d17d3ca0031777378967fa63fb2ae33f067

    SHA256

    7ac06048875e3fe461278c6f73453d2fcbcff574ff63598e78382dc46c9b5b0a

    SHA512

    a664523f9ba905b14cf0bed7f25c07ff931bf377be769430b36e63e7d964d990faccb309419dee325edfcd00e482fb43a173dd642de9bb500c8a88ff4ad4d22d

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

    Filesize

    344B

    MD5

    7b4c5d1a63fbb81d0edeaf7605bc6a7a

    SHA1

    9fb31ee252926060dc22a7371e91e2978cb5d580

    SHA256

    83400fb0da57b62fe198b622716b8ff8aec00e68807af3b2f988ffb172a7d669

    SHA512

    e6437d7a0ec67dc5c1dcc8c950dfed8f8ecdcff0c6345f1814934d79e54f5bb8a9bbcd941df00cd81bfb3bc0760b88c2f80a6694cfad787a5f85c34fd37025e4

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

    Filesize

    392B

    MD5

    55861497e8fab1e7f6da242ae746ec80

    SHA1

    4cb2f251c618e65057eb9a6c1b6902b28dd21f39

    SHA256

    4d4c50b105245967837edf840aab9c268c475617670b44be85265f2d62fa71f0

    SHA512

    1d2b98ef012d136436e80ae10a4951daf39f1d213a3dfeaf4536186b2a0cbbbc17eb93229bf3559ab7363b56e19df461648b70356bc000fc0e8ab6f89483470c

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    242B

    MD5

    227f906281151dbc9c5393def9c030ea

    SHA1

    52e3241c14cb27b250ad5cc929af6765c2c119d6

    SHA256

    8105cf3dcb11989cf559fe55fbb5ec2b8736f894b9bd6295840130fd1fac585d

    SHA512

    edb8ea93f6c57ff3487b7e19f5a27c7f19f42450b8e0a1805bcb58c77ce0d7c5308aa84b6b14010bce211c25752000c4dafb7c381d1572fb6477d9fee3c91ef0

  • C:\Users\Admin\AppData\Local\Temp\Tar6B80.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • C:\Users\Admin\AppData\Local\fa58cfe6-dab8-48c6-9834-ef727c25aedc\04535d027119e09a31f99b3662094339.exe

    Filesize

    773KB

    MD5

    04535d027119e09a31f99b3662094339

    SHA1

    c8832221b62edb8255c2b81be0cf776884459148

    SHA256

    bd2364f4d561136775d9ac4fd72e4e14bfed546ea1acc3fd7685fb5d7ff278d8

    SHA512

    b1e2c0e90fd926e1e8dbb21fb733e9c020ea7c14540b96844c92c87f2310c584b2020b765649b4959d435093c7ef05f60c3a24cfe527fa20c2618768f2c1c86e

  • memory/1440-79-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1440-74-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1440-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1440-72-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1440-56-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1440-77-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1440-80-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1440-73-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1440-81-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1440-82-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2932-4-0x0000000002270000-0x000000000238B000-memory.dmp

    Filesize

    1.1MB

  • memory/2932-0-0x0000000002150000-0x00000000021E1000-memory.dmp

    Filesize

    580KB

  • memory/2932-1-0x0000000002150000-0x00000000021E1000-memory.dmp

    Filesize

    580KB

  • memory/2976-49-0x00000000020C0000-0x0000000002151000-memory.dmp

    Filesize

    580KB

  • memory/2976-54-0x00000000020C0000-0x0000000002151000-memory.dmp

    Filesize

    580KB

  • memory/2976-48-0x00000000020C0000-0x0000000002151000-memory.dmp

    Filesize

    580KB

  • memory/3032-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/3032-46-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3032-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3032-7-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3032-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB