Analysis

  • max time kernel
    143s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    21-05-2024 23:24

General

  • Target

    1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe

  • Size

    806KB

  • MD5

    f47c11ca7e97297d5bdbb85910a2f9f2

  • SHA1

    8d5d7e9d38bf7dc9c1510aa656a9468e289a80ba

  • SHA256

    1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4

  • SHA512

    5954c8ebc830da9e2f83830ec991d4118de2e5c03287b4e4c7cf536932fc5385cd2ffa963c95c033cf88addcdf77a941b87e234fb7be496ffb5f435d01a026dc

  • SSDEEP

    12288:qaCXOY0rS3t0QWRQdxyj+pqi3PwzAFrag+5bOm5KiNUJpTZ:9C+YeSvIQdtRPvNagA/FNGt

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes
  • extension

    .vepi

  • offline_id

    EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1

  • payload_url

    http://sdfjhuz.com/dl/build2.exe

    http://cajgtus.com/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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0871PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 13 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).

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
    "C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2288
    • C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
      "C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1652
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\5ffdd31e-9f26-45fb-b491-46969f22cc27" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2688
      • C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
        "C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2696
        • C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
          "C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2432

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

    a1d955617a4d146e70544d0d9a0390ca

    SHA1

    5ffdc4453b23e24a7cb0e634b26864c169f5257b

    SHA256

    8dbff2c0018158256912d87dd495a68c351303a319f50f204a930317e867aeb3

    SHA512

    0bffbc27638b12cc04f335de8c4f3c74df01ae55b56f389f8d046d797b4c62d31bbff057ea75ce32f67cdd3b878fd0aad3eb62e983f814296e1b94de3c6ba810

  • 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\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    410B

    MD5

    a96abc14511eaf36a2c0de29ce8a2e82

    SHA1

    e5657860622cfd0c6dd08681d431cb8ecb0e5dcd

    SHA256

    6a4281ac15c980190a39f04babc7a826ab8becdd4a0d2c7c023783fb215a6f7f

    SHA512

    01b4fda422bd3b031a66f3797c15834a7307b1cfa67bf1db7fd869067adbac8115b01a0fe7187fc95541821a81a148d471cf70c81321184c4912ebb3ec6e69d5

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

    Filesize

    344B

    MD5

    57223d15c258c66655d28df3338039a4

    SHA1

    07fab2ff9d93657d4b02204ce1c482297efe35cc

    SHA256

    582424510aa118b92fd84bf9ffadfb81a13db55b38772883e78ec685cd51c514

    SHA512

    6a93fcaaae5ecd295ea5e8ae48cb67c5ebf965971b57da1643d1d729c32011acc9a631d14ba42adaa7c4a72c81a8b1de860a803d118f29aa42b7314b5603409a

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

    Filesize

    392B

    MD5

    bd1f2402aafb6cddd5e780dc790b041e

    SHA1

    64a881ea1fe4f04b8f04ceb3b61c6532fa417244

    SHA256

    33f91893e8745e0bde63d61faac5575d69683956f9abb1d411a544ff52eec30f

    SHA512

    78678165217dd3ce0537a6a76fd0e40578922223f3d09d00a580e5c09e8b128e54e2fe7fc40b47d0e7578fda9f4f87fb3674f5763a07437b8a8b1b7e6dfb0060

  • C:\Users\Admin\AppData\Local\5ffdd31e-9f26-45fb-b491-46969f22cc27\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe

    Filesize

    806KB

    MD5

    f47c11ca7e97297d5bdbb85910a2f9f2

    SHA1

    8d5d7e9d38bf7dc9c1510aa656a9468e289a80ba

    SHA256

    1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4

    SHA512

    5954c8ebc830da9e2f83830ec991d4118de2e5c03287b4e4c7cf536932fc5385cd2ffa963c95c033cf88addcdf77a941b87e234fb7be496ffb5f435d01a026dc

  • C:\Users\Admin\AppData\Local\Temp\Cab1BAB.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • memory/1652-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1652-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1652-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1652-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1652-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2288-2-0x0000000002660000-0x000000000277B000-memory.dmp

    Filesize

    1.1MB

  • memory/2288-7-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB

  • memory/2288-0-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB

  • memory/2288-1-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB

  • memory/2432-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2432-47-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2432-46-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2432-48-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2432-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2432-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2432-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2432-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2696-30-0x00000000023F0000-0x0000000002482000-memory.dmp

    Filesize

    584KB