Analysis

  • max time kernel
    142s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    30-05-2024 12:30

General

  • Target

    3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe

  • Size

    973KB

  • MD5

    b294d6cd51dd00e84692acf53328a7de

  • SHA1

    83a78d7c00addc083fa77fd1c0804f2a8fd6ff1e

  • SHA256

    3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d

  • SHA512

    13688621b1b2597bec74726ee2a781d20e7adaa3413493a8bf4cf3afd1932f4b812dd1c4b636c7eacf6c6ce2350d3eded530072b0525e00f6295857382b23384

  • SSDEEP

    24576:fYn2Mu8DzvLjj/tTQIs/kMHJY0krrfEgcjPs2RfCGZoGg/:GO8XjjhTQl8aYtrcgcjPs2obG

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .vaze

  • offline_id

    BUcuB8PRg0LNi380axIJs5BS8nCUdeo9U88L2Lt1

  • payload_url

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

    http://zexeq.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. You can get and look video overview decrypt tool: https://we.tl/t-tnzomMj6HU 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: 0714JOsie

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).

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
    "C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1724
    • C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
      "C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2448
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\bbe69f17-4c51-4830-8ea8-101fb3ee3fd9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2672
      • C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
        "C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2648
        • C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
          "C:\Users\Admin\AppData\Local\Temp\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2372

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

File and Directory Permissions Modification

1
T1222

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    1KB

    MD5

    66d1f71702c1ef556dedf6366558c482

    SHA1

    1351a8d97e101fd17381d7d0dc232af4b08b86c0

    SHA256

    f001a03aa71c553fe7bb4e9fe8e42d495ae726c657d8542ff8f1a6041c1be8f4

    SHA512

    ba6909f4997d6ad9211a5d660c2c4ef2a0cf5560f49f0b21c353ee4e400ec06f625640a46ac1300944d53dd2c025f9c10467013a15857d9f7946c5206b7cc672

  • 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

    00df9bea2e13576c4fa0e713b90691ba

    SHA1

    b641fb1d64e09d5b2d34a6d958802e4308651565

    SHA256

    98aab6591758ac9abf4212aa2ed47908ef616719219826af2d6e1fef50d6b80d

    SHA512

    65ae07363041ad53f6fb3c369fd9fff9af3b34efcfa6c08356b1dbf975852021ef0c2ddb0fe4a9a0a75a6963ea8f4b0ddad39718f8329e6f1e6ea0f0652ab4fe

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

    344B

    MD5

    0b6268f97e10258b60a87a52ae303c9a

    SHA1

    305d2c684f3c1b86bd77f63c8e7dd7e800852520

    SHA256

    95f47722ace48da25d77d71c6c8a34f4b0dcb82759503f1b0e480c9661088681

    SHA512

    0b532a6ea5befeb38ed7bf025aa3a11a3e32077b476ea63700ea44dccb50e757e7e8174d8f702ff7c24306aa9e4ad650fefd262f9886e2bc8414d011fc1a4592

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

    392B

    MD5

    8fc9076890553dbbc7a13747588b5d4f

    SHA1

    0cf3a721229f68dd650f1371c108dd9236e9043c

    SHA256

    f061789199565a25c864723a6af5e0d0e44784ec00762af43add038c5a35a99b

    SHA512

    63d2ab323fbde7bb6b106e7e598a08535a3ba4d0dc23a094f869e2b63faa61978e371aeccae0414ddc1e7d9130d7d0fa53b4911a227b7dced68c5c0579631da6

  • C:\Users\Admin\AppData\Local\Temp\Cab2194.tmp
    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\bbe69f17-4c51-4830-8ea8-101fb3ee3fd9\3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d.exe
    Filesize

    973KB

    MD5

    b294d6cd51dd00e84692acf53328a7de

    SHA1

    83a78d7c00addc083fa77fd1c0804f2a8fd6ff1e

    SHA256

    3944f1d535ced6b2be74554210ee1ef33a2a2031def81dfd522fd367c06bf29d

    SHA512

    13688621b1b2597bec74726ee2a781d20e7adaa3413493a8bf4cf3afd1932f4b812dd1c4b636c7eacf6c6ce2350d3eded530072b0525e00f6295857382b23384

  • memory/1724-18-0x0000000001F70000-0x0000000001FAC000-memory.dmp
    Filesize

    240KB

  • memory/1724-3-0x0000000000401000-0x00000000004A6000-memory.dmp
    Filesize

    660KB

  • memory/1724-9-0x0000000000400000-0x000000000073B000-memory.dmp
    Filesize

    3.2MB

  • memory/1724-4-0x0000000000400000-0x000000000073B000-memory.dmp
    Filesize

    3.2MB

  • memory/1724-0-0x0000000000400000-0x000000000073B000-memory.dmp
    Filesize

    3.2MB

  • memory/1724-20-0x0000000002520000-0x000000000285B000-memory.dmp
    Filesize

    3.2MB

  • memory/1724-2-0x0000000000400000-0x000000000073B000-memory.dmp
    Filesize

    3.2MB

  • memory/1724-17-0x0000000000401000-0x00000000004A6000-memory.dmp
    Filesize

    660KB

  • memory/1724-16-0x0000000000400000-0x000000000073B000-memory.dmp
    Filesize

    3.2MB

  • memory/1724-6-0x0000000000400000-0x000000000073B000-memory.dmp
    Filesize

    3.2MB

  • memory/1724-5-0x00000000001B0000-0x00000000001B1000-memory.dmp
    Filesize

    4KB

  • memory/1724-7-0x0000000000400000-0x000000000073B000-memory.dmp
    Filesize

    3.2MB

  • memory/1724-1-0x0000000001F70000-0x0000000001FAC000-memory.dmp
    Filesize

    240KB

  • memory/1724-8-0x0000000002280000-0x0000000002311000-memory.dmp
    Filesize

    580KB

  • memory/2372-78-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2372-74-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2372-70-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2372-65-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2372-66-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2372-84-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2372-85-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2372-51-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2372-82-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2372-86-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2372-87-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2448-14-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2448-40-0x00000000006D0000-0x00000000007D0000-memory.dmp
    Filesize

    1024KB

  • memory/2448-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2448-42-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2448-19-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2448-15-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2448-38-0x0000000003B50000-0x0000000003E8B000-memory.dmp
    Filesize

    3.2MB

  • memory/2448-39-0x0000000003B60000-0x0000000003E9B000-memory.dmp
    Filesize

    3.2MB

  • memory/2648-47-0x0000000002280000-0x0000000002311000-memory.dmp
    Filesize

    580KB

  • memory/2648-46-0x0000000000400000-0x000000000073B000-memory.dmp
    Filesize

    3.2MB

  • memory/2648-45-0x00000000001B0000-0x00000000001B1000-memory.dmp
    Filesize

    4KB

  • memory/2648-43-0x0000000000400000-0x000000000073B000-memory.dmp
    Filesize

    3.2MB

  • memory/2648-52-0x0000000000400000-0x000000000073B000-memory.dmp
    Filesize

    3.2MB

  • memory/2648-44-0x0000000000400000-0x000000000073B000-memory.dmp
    Filesize

    3.2MB