Analysis

  • max time kernel
    149s
  • max time network
    136s
  • platform
    windows10-1703_x64
  • resource
    win10-20231020-en
  • resource tags

    arch:x64arch:x86image:win10-20231020-enlocale:en-usos:windows10-1703-x64system
  • submitted
    01/11/2023, 00:20

General

  • Target

    8ecb5aab9d8af5e3a0f43c251525332ffa2342ce1d8fd37c751874763f44a12b.exe

  • Size

    685KB

  • MD5

    3bbe6a480bcb8cc48da997d0d6e20942

  • SHA1

    8e14c19ed22968d2ce2f0bc7be20e17da53a32a5

  • SHA256

    8ecb5aab9d8af5e3a0f43c251525332ffa2342ce1d8fd37c751874763f44a12b

  • SHA512

    ab06afc6d6c43da63885148326aa57c7999d7ed8393dcd6e06e067373553929169daadd366a77853b5a4998ebe578161c0dd9d6106fc2f89d9d7bd3dfd5a0b68

  • SSDEEP

    12288:Z9VQ4e1R3m91QB/dI+tnBXLlgVlcbbEYOTg6yTUa0frpMZAny1yeX62B1ROM/fvU:Vy1R3mQ1JtB2lcbbHSnA501aAyZX62BQ

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .ppvs

  • offline_id

    phJtdHo970vyx7vwlYG00OakDR75RuJz7NXDArt1

  • 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-eyUsqpKbFl 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: 0815JOsie

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 17 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8ecb5aab9d8af5e3a0f43c251525332ffa2342ce1d8fd37c751874763f44a12b.exe
    "C:\Users\Admin\AppData\Local\Temp\8ecb5aab9d8af5e3a0f43c251525332ffa2342ce1d8fd37c751874763f44a12b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4500
    • C:\Users\Admin\AppData\Local\Temp\8ecb5aab9d8af5e3a0f43c251525332ffa2342ce1d8fd37c751874763f44a12b.exe
      "C:\Users\Admin\AppData\Local\Temp\8ecb5aab9d8af5e3a0f43c251525332ffa2342ce1d8fd37c751874763f44a12b.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4988
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\35bebada-8b42-4505-9117-7c7ddf9ee4b6" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4168
      • C:\Users\Admin\AppData\Local\Temp\8ecb5aab9d8af5e3a0f43c251525332ffa2342ce1d8fd37c751874763f44a12b.exe
        "C:\Users\Admin\AppData\Local\Temp\8ecb5aab9d8af5e3a0f43c251525332ffa2342ce1d8fd37c751874763f44a12b.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4568
        • C:\Users\Admin\AppData\Local\Temp\8ecb5aab9d8af5e3a0f43c251525332ffa2342ce1d8fd37c751874763f44a12b.exe
          "C:\Users\Admin\AppData\Local\Temp\8ecb5aab9d8af5e3a0f43c251525332ffa2342ce1d8fd37c751874763f44a12b.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4952
          • C:\Users\Admin\AppData\Local\9c58f307-01b1-47ac-8a13-f1510f4bef61\build2.exe
            "C:\Users\Admin\AppData\Local\9c58f307-01b1-47ac-8a13-f1510f4bef61\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4880
            • C:\Users\Admin\AppData\Local\9c58f307-01b1-47ac-8a13-f1510f4bef61\build2.exe
              "C:\Users\Admin\AppData\Local\9c58f307-01b1-47ac-8a13-f1510f4bef61\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:2112
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\9c58f307-01b1-47ac-8a13-f1510f4bef61\build2.exe" & del "C:\ProgramData\*.dll"" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:300
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 5
                  8⤵
                  • Delays execution with timeout.exe
                  PID:1420

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    1KB

    MD5

    1556fc38a0db5b0c05c4277a624515de

    SHA1

    ce49652166b3bd3820b2cdbe7cfbba78eabbf9f0

    SHA256

    da82afcf50861e89ff8bff80ee852bb4c937b8b39ee2d8b10bff462afe3d0372

    SHA512

    552f08e28cf217126f97338798f8036dc49501f7f09421afe975632faf2b78db3a3d3831f98b7f030285e960b6faa5c5bb41a339c4e6fa1473d3b3479bbaf1e0

  • 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

    999a8b9bce2f0fd279bf70a1ddfe0889

    SHA1

    a0e08d82ecbc4c2bc782085b1cad731d68ac0887

    SHA256

    a0704fb8c8bad6a5fc955e629a7eda571d9719826e907825a965c53380ac9528

    SHA512

    0bbced729ddfe632500e1d62e977a649c2f6456d5106fd89b641637ccef0888e76625e2d82241b1ed6a05c5392175220ceef7c8e41342d16d25a9e72acbf8f86

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

    Filesize

    392B

    MD5

    3449cd637618521616389884cc1142f9

    SHA1

    0632b5b571df90a8c07f0238754e365840a69649

    SHA256

    fa602bc0642433948ef4df53222cf278ceaa49765bbc4429775923a5e60d4391

    SHA512

    26aebf91d15bbef2e0c1ee1a84d40cd5a1f29381da5e0473b4abb1a9b663669efdd05879b791332579ab1d7a7a6c2076241ef0c92ea94e1a3400acce99ef4674

  • C:\Users\Admin\AppData\Local\35bebada-8b42-4505-9117-7c7ddf9ee4b6\8ecb5aab9d8af5e3a0f43c251525332ffa2342ce1d8fd37c751874763f44a12b.exe

    Filesize

    685KB

    MD5

    3bbe6a480bcb8cc48da997d0d6e20942

    SHA1

    8e14c19ed22968d2ce2f0bc7be20e17da53a32a5

    SHA256

    8ecb5aab9d8af5e3a0f43c251525332ffa2342ce1d8fd37c751874763f44a12b

    SHA512

    ab06afc6d6c43da63885148326aa57c7999d7ed8393dcd6e06e067373553929169daadd366a77853b5a4998ebe578161c0dd9d6106fc2f89d9d7bd3dfd5a0b68

  • C:\Users\Admin\AppData\Local\9c58f307-01b1-47ac-8a13-f1510f4bef61\build2.exe

    Filesize

    206KB

    MD5

    89444ecbcfe1a5a86eea4bcf7d8aef04

    SHA1

    2909ac2035636fb1461b19e31b985f324f866a8e

    SHA256

    2b51eb4478d4d3518659d1fe706408aaf2076efb5445524ace766047b50d0789

    SHA512

    df42cb8d0afab3fd8249cdc5a96fb5766954991a86406b1f6862ec54a2c42586d2a6c1c00af68d9da455ea902449b0c96fe82df858b4bc5fad15883e73783bde

  • C:\Users\Admin\AppData\Local\9c58f307-01b1-47ac-8a13-f1510f4bef61\build2.exe

    Filesize

    206KB

    MD5

    89444ecbcfe1a5a86eea4bcf7d8aef04

    SHA1

    2909ac2035636fb1461b19e31b985f324f866a8e

    SHA256

    2b51eb4478d4d3518659d1fe706408aaf2076efb5445524ace766047b50d0789

    SHA512

    df42cb8d0afab3fd8249cdc5a96fb5766954991a86406b1f6862ec54a2c42586d2a6c1c00af68d9da455ea902449b0c96fe82df858b4bc5fad15883e73783bde

  • C:\Users\Admin\AppData\Local\9c58f307-01b1-47ac-8a13-f1510f4bef61\build2.exe

    Filesize

    206KB

    MD5

    89444ecbcfe1a5a86eea4bcf7d8aef04

    SHA1

    2909ac2035636fb1461b19e31b985f324f866a8e

    SHA256

    2b51eb4478d4d3518659d1fe706408aaf2076efb5445524ace766047b50d0789

    SHA512

    df42cb8d0afab3fd8249cdc5a96fb5766954991a86406b1f6862ec54a2c42586d2a6c1c00af68d9da455ea902449b0c96fe82df858b4bc5fad15883e73783bde

  • C:\Users\Admin\AppData\Local\9c58f307-01b1-47ac-8a13-f1510f4bef61\build3.exe

    Filesize

    1KB

    MD5

    cc6901a2665a3928d7547895d62e1bfd

    SHA1

    552303030ba53828fe3cdf725c44e84494f16de5

    SHA256

    1ef93ea88586bd708e6f8fe05622a4d7d481c327a822d9cc795ee6f4f31636d8

    SHA512

    9646389573b831dcdc65cdf83fdb9d7d715140050d55928dfaf3f31e23e2186bdef133c5a009039b80feb36e37d260823409636b5aeeea271dda30ab0e74539f

  • \ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/2112-138-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/2112-133-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/2112-76-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/2112-152-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/2112-148-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/2112-78-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/2112-145-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/2112-144-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/2112-139-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/2112-57-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/2112-154-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/2112-134-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/2112-77-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/2112-156-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/2112-51-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/2112-56-0x0000000000400000-0x000000000062D000-memory.dmp

    Filesize

    2.2MB

  • memory/4500-1-0x0000000000B10000-0x0000000000BA6000-memory.dmp

    Filesize

    600KB

  • memory/4500-2-0x0000000002570000-0x000000000268B000-memory.dmp

    Filesize

    1.1MB

  • memory/4568-22-0x0000000002320000-0x00000000023BF000-memory.dmp

    Filesize

    636KB

  • memory/4880-55-0x0000000000910000-0x000000000092C000-memory.dmp

    Filesize

    112KB

  • memory/4880-52-0x00000000009B0000-0x0000000000AB0000-memory.dmp

    Filesize

    1024KB

  • memory/4880-147-0x0000000000910000-0x000000000092C000-memory.dmp

    Filesize

    112KB

  • memory/4952-41-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4952-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4952-26-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4952-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4952-64-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4952-42-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4952-40-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4952-25-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4952-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4952-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4988-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4988-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4988-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4988-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4988-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB