Analysis

  • max time kernel
    147s
  • max time network
    139s
  • platform
    windows10-1703_x64
  • resource
    win10-20230703-en
  • resource tags

    arch:x64arch:x86image:win10-20230703-enlocale:en-usos:windows10-1703-x64system
  • submitted
    26/07/2023, 09:40

General

  • Target

    e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe

  • Size

    852KB

  • MD5

    5d166a4a02e9171036403ac55a524c55

  • SHA1

    a41b406cd89f0690b746c018c0ad7e70c72be734

  • SHA256

    e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c

  • SHA512

    13a7c91163768c3fcae21cceefd71fb74e98371409573c8135cf20093c9da0b41c053ed346d6a6319656e98a8bb325e96cb2873d1589837a87e87853423aa9da

  • SSDEEP

    12288:idpN4ffBNd8S82fNcQsV5VWhXbH7QyKGU1V4WNcqclVUnTO2vE+BynowjPjmz:U6rd8XwWKXbbtK5TcSTO2v9kPjmz

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .wsuu

  • offline_id

    7X6susBgNzwvmNWz9bMuyhXEUD44D10UNodg0Zt1

  • 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-ujg4QBiBRu 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: 0752Osie

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 16 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • 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).

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe
    "C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:352
    • C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe
      "C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2716
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\c198e5db-4807-4575-ba29-18aaa3b3adf3" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4640
      • C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe
        "C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1348
        • C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe
          "C:\Users\Admin\AppData\Local\Temp\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4796
          • C:\Users\Admin\AppData\Local\1657eb73-4ec0-42d1-a5c5-001b09ff1fce\build3.exe
            "C:\Users\Admin\AppData\Local\1657eb73-4ec0-42d1-a5c5-001b09ff1fce\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2316
            • C:\Windows\SysWOW64\schtasks.exe
              /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
              6⤵
              • Creates scheduled task(s)
              PID:3808
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4488
    • C:\Windows\SysWOW64\schtasks.exe
      /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
      2⤵
      • Creates scheduled task(s)
      PID:3900

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    Filesize

    2KB

    MD5

    debbf14f3483068c85dbb41089275387

    SHA1

    53c67f0496489a8bf83e645035b9e030fe22f052

    SHA256

    d62934313eec30d6276854f81ed0ad0fa455c13032f23c49dc5e931e53aa24fd

    SHA512

    ef0f3231d777612c12fa32f6d9fd8c24f3147ab0d44e660ceb86d6cd43120be1396ae351d14305ad41d10799cb1fba9ae7626e6970ec840f4e30b4934a49971d

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    1KB

    MD5

    9f4dbb9c92a85c4ef5093a2df64ac230

    SHA1

    83acdef3b775ddcea8a50a04e8f1e8afaa6e0d22

    SHA256

    f29be229662b3201af3c58d4fcccb93da75f9cc44a2b7c2e3086302bb2bc1425

    SHA512

    25a85055583e7d008a25add9d4976e8255b01e2dce1a90b75c63c8eff8ee56a94ef35852210cbec1298fc905325d295c73a78f9a8e85ffdfc98d8a2b0896150b

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    Filesize

    488B

    MD5

    b2f468b5d166e27fe74001958325a68a

    SHA1

    3209c0c8f3d0a9f71714b530c62be041d81d57a1

    SHA256

    d0641d1cc7f27bc8de4387be0a52fc1992610a2a61b47fd07d455c921d92ef36

    SHA512

    5c00518baeb1a5c5960b3408d9f182e4dc09e074efccbb2bc71e97640dccc4d80294387a8afbfc7d15106fc772fede0293fa7a4eb2c2e05204d92fa8f60e8b39

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    482B

    MD5

    82eceb941d12ff1e9d46367c0abb77f3

    SHA1

    eeb97cc46c429b29bec5677ac536f6380688932f

    SHA256

    42c6fefedf185f8507eb178ebae3a69f40019e4f31586444ed58c44b82af4754

    SHA512

    00314f62da3b5267f031aab701c034977e146f5d67022601e1edbea5f91fe1da718c6d79474a53b37e11ed4e4574affd33e8543a74d93c65236d203aa08246f9

  • C:\Users\Admin\AppData\Local\1657eb73-4ec0-42d1-a5c5-001b09ff1fce\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\1657eb73-4ec0-42d1-a5c5-001b09ff1fce\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\c198e5db-4807-4575-ba29-18aaa3b3adf3\e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c.exe

    Filesize

    852KB

    MD5

    5d166a4a02e9171036403ac55a524c55

    SHA1

    a41b406cd89f0690b746c018c0ad7e70c72be734

    SHA256

    e515b5cada95af17780c206b00072c6d2b6ba61bf32db667f9d66a4ceb056b9c

    SHA512

    13a7c91163768c3fcae21cceefd71fb74e98371409573c8135cf20093c9da0b41c053ed346d6a6319656e98a8bb325e96cb2873d1589837a87e87853423aa9da

  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • memory/352-121-0x0000000002570000-0x0000000002604000-memory.dmp

    Filesize

    592KB

  • memory/352-122-0x0000000004190000-0x00000000042AB000-memory.dmp

    Filesize

    1.1MB

  • memory/1348-140-0x00000000040B0000-0x000000000414B000-memory.dmp

    Filesize

    620KB

  • memory/2716-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2716-126-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2716-123-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2716-124-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2716-125-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4796-150-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4796-156-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4796-157-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4796-158-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4796-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4796-154-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4796-167-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4796-144-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4796-149-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4796-143-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB