Analysis

  • max time kernel
    144s
  • max time network
    304s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    20/09/2022, 14:15

General

  • Target

    c05def803b54ab55f69d58a84bca34b32db3655aad0ce89473dadf2629f4cbe5.exe

  • Size

    726KB

  • MD5

    efe367087f3280a2f42344c3ac3a2d42

  • SHA1

    f2ef832ece8d9666bf2abf15de84eef475dde57a

  • SHA256

    c05def803b54ab55f69d58a84bca34b32db3655aad0ce89473dadf2629f4cbe5

  • SHA512

    305f7540576b1d2fef53612de3dcdadd910cd7c01ef011759a9b4b84e62b9b8d21362b8a247e213cd091da400f63c0883c7f83adcfa191c48903cddf11e066f8

  • SSDEEP

    12288:arbDO5fiqPLW+katdW8OgNBKnrEIcKGlqJUGgrUzyRIemZTswHOeo:arbS5fiKL0opOgNGAIcll3GgSxpp

Malware Config

Extracted

Family

djvu

C2

http://acacaca.org/test1/get.php

Attributes
  • extension

    .mmpu

  • offline_id

    yd6oYv6aBN90yFzTWdZ34sXSXtXiauzOLXZyWht1

  • payload_url

    http://rgyui.top/dl/build2.exe

    http://acacaca.org/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-xuPJqoyzQE 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: 0554Jhyjd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 9 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 4 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 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c05def803b54ab55f69d58a84bca34b32db3655aad0ce89473dadf2629f4cbe5.exe
    "C:\Users\Admin\AppData\Local\Temp\c05def803b54ab55f69d58a84bca34b32db3655aad0ce89473dadf2629f4cbe5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:828
    • C:\Users\Admin\AppData\Local\Temp\c05def803b54ab55f69d58a84bca34b32db3655aad0ce89473dadf2629f4cbe5.exe
      "C:\Users\Admin\AppData\Local\Temp\c05def803b54ab55f69d58a84bca34b32db3655aad0ce89473dadf2629f4cbe5.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1960
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\05dda645-f759-4f60-841b-69a272b6be71" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:428
      • C:\Users\Admin\AppData\Local\Temp\c05def803b54ab55f69d58a84bca34b32db3655aad0ce89473dadf2629f4cbe5.exe
        "C:\Users\Admin\AppData\Local\Temp\c05def803b54ab55f69d58a84bca34b32db3655aad0ce89473dadf2629f4cbe5.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1356
        • C:\Users\Admin\AppData\Local\Temp\c05def803b54ab55f69d58a84bca34b32db3655aad0ce89473dadf2629f4cbe5.exe
          "C:\Users\Admin\AppData\Local\Temp\c05def803b54ab55f69d58a84bca34b32db3655aad0ce89473dadf2629f4cbe5.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1756
          • C:\Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build2.exe
            "C:\Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1732
            • C:\Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build2.exe
              "C:\Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build2.exe"
              6⤵
              • Executes dropped EXE
              • Modifies system certificate store
              PID:1640
          • C:\Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build3.exe
            "C:\Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1044
            • 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:2036
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {0E392819-52F0-43D5-B47F-8C08FBB4AFFF} S-1-5-21-3845472200-3839195424-595303356-1000:ZERMMMDR\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:784
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:748
  • 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"
    1⤵
    • Creates scheduled task(s)
    PID:1352

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    2KB

    MD5

    1c626eac6241b02b0082a76f150a3a8a

    SHA1

    b7c0c6ae1d3d5a2beaf4c4f3744cac6285f04858

    SHA256

    412116af67c3a894bee8821158ee91447ca6cfe0d5b43d0524e6c5af5defaf69

    SHA512

    8550f0ec9a9c5f152a3b5eb49a91084d3201589373b8d381233926f1ac34bd0c276fa1e3c9da75bd8297f417d9f566f4bf6b882107c7255522f745e6d446802a

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

    Filesize

    1KB

    MD5

    48e98893438d04fa64bb49bbdafbf960

    SHA1

    e28578281fc80cb97275a94aa0e9da0db8285b87

    SHA256

    2ad261d743636a48688f1d3a1a9def925c6a7642db3dea12b8c23e5aac46719d

    SHA512

    9eb1160e51ce79e0a7055a053ac5f25d2ff8d7277f8af146c188a1bd24deddd12df219aeb410f072b26ccaa114b88d7680d474c86736a0ab3187ec7ee08c73b0

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

    Filesize

    488B

    MD5

    bf1170e769d5e3a8cfff100032cbfd5d

    SHA1

    de1a6048380b820c76724aa89f85b9ae4d519263

    SHA256

    40d2e239dadd9f960428d05e15f91c27355af80e73b966f2612bedf40dc592bf

    SHA512

    b5adfc3b2a2528220455cc32f35befc5f178f888d1d7fc975f3474189deff73047394079c3bc2834a82511043bb121ba32e6ee593ec22dc3e2b3eeb73d4b9a99

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

    Filesize

    340B

    MD5

    8cffc9846c885c048e9ca0cd34e7e1fb

    SHA1

    fa9e750b57f431062afd2115654be973e6656282

    SHA256

    521827cf049118d47fe479feddbcedf9ac06a0b388d8c6b56a40a561d1f04094

    SHA512

    4817dfd82c99a516fd2032ee0c15d0b816631752e0ee2aa05d0b7404e28ae0d6dd1cbf2186a7154a9016c356dcc75e86b559fdf912bc3a29aa6ac7a415acacb8

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

    Filesize

    482B

    MD5

    c166bbebc39a5b9ac2879a265e7b148d

    SHA1

    bbba51b36c42b1d5abcd0e315557663f32d3059e

    SHA256

    a1c31412d7c92a50471f09f7be856a2bded2d7a6185e7b8f00a6ac0b2bbba3a7

    SHA512

    46c82a466c9be75dae927a31674ca9f8726ecd6bd1271ac1c1bc330b5910c37b64a0e58d79ef475e045c5cd52dc2c05084ad125897c342dc36f4377c16f46eca

  • C:\Users\Admin\AppData\Local\05dda645-f759-4f60-841b-69a272b6be71\c05def803b54ab55f69d58a84bca34b32db3655aad0ce89473dadf2629f4cbe5.exe

    Filesize

    726KB

    MD5

    efe367087f3280a2f42344c3ac3a2d42

    SHA1

    f2ef832ece8d9666bf2abf15de84eef475dde57a

    SHA256

    c05def803b54ab55f69d58a84bca34b32db3655aad0ce89473dadf2629f4cbe5

    SHA512

    305f7540576b1d2fef53612de3dcdadd910cd7c01ef011759a9b4b84e62b9b8d21362b8a247e213cd091da400f63c0883c7f83adcfa191c48903cddf11e066f8

  • C:\Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build2.exe

    Filesize

    246KB

    MD5

    4e08ecaa075b90f30327bf200d23130b

    SHA1

    f7b67a7abbe3815bd758933f7c4712bd4d4ec4b2

    SHA256

    6c11af0bbd346329224255d38a07fb9db5828881d3520ab4623c7a5fc09ecd47

    SHA512

    e7deeafe000b034cd4d71776cd1285e33d295a830f3459506dd7332e8c1c61b43ec2fdc406c22ba5262aa62a795421492f7e54602bfe08102b8b2a000d150bb7

  • C:\Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build2.exe

    Filesize

    246KB

    MD5

    4e08ecaa075b90f30327bf200d23130b

    SHA1

    f7b67a7abbe3815bd758933f7c4712bd4d4ec4b2

    SHA256

    6c11af0bbd346329224255d38a07fb9db5828881d3520ab4623c7a5fc09ecd47

    SHA512

    e7deeafe000b034cd4d71776cd1285e33d295a830f3459506dd7332e8c1c61b43ec2fdc406c22ba5262aa62a795421492f7e54602bfe08102b8b2a000d150bb7

  • C:\Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build2.exe

    Filesize

    246KB

    MD5

    4e08ecaa075b90f30327bf200d23130b

    SHA1

    f7b67a7abbe3815bd758933f7c4712bd4d4ec4b2

    SHA256

    6c11af0bbd346329224255d38a07fb9db5828881d3520ab4623c7a5fc09ecd47

    SHA512

    e7deeafe000b034cd4d71776cd1285e33d295a830f3459506dd7332e8c1c61b43ec2fdc406c22ba5262aa62a795421492f7e54602bfe08102b8b2a000d150bb7

  • C:\Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build3.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

  • \Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build2.exe

    Filesize

    246KB

    MD5

    4e08ecaa075b90f30327bf200d23130b

    SHA1

    f7b67a7abbe3815bd758933f7c4712bd4d4ec4b2

    SHA256

    6c11af0bbd346329224255d38a07fb9db5828881d3520ab4623c7a5fc09ecd47

    SHA512

    e7deeafe000b034cd4d71776cd1285e33d295a830f3459506dd7332e8c1c61b43ec2fdc406c22ba5262aa62a795421492f7e54602bfe08102b8b2a000d150bb7

  • \Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build2.exe

    Filesize

    246KB

    MD5

    4e08ecaa075b90f30327bf200d23130b

    SHA1

    f7b67a7abbe3815bd758933f7c4712bd4d4ec4b2

    SHA256

    6c11af0bbd346329224255d38a07fb9db5828881d3520ab4623c7a5fc09ecd47

    SHA512

    e7deeafe000b034cd4d71776cd1285e33d295a830f3459506dd7332e8c1c61b43ec2fdc406c22ba5262aa62a795421492f7e54602bfe08102b8b2a000d150bb7

  • \Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • \Users\Admin\AppData\Local\7a5de66e-d1b3-4a1d-a7c3-57f39d961c00\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • memory/828-58-0x0000000000260000-0x00000000002F1000-memory.dmp

    Filesize

    580KB

  • memory/828-59-0x0000000004450000-0x000000000456B000-memory.dmp

    Filesize

    1.1MB

  • memory/828-54-0x0000000000260000-0x00000000002F1000-memory.dmp

    Filesize

    580KB

  • memory/1356-66-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/1356-71-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/1640-92-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/1640-100-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/1640-99-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/1732-98-0x0000000000220000-0x0000000000267000-memory.dmp

    Filesize

    284KB

  • memory/1732-96-0x000000000069B000-0x00000000006C5000-memory.dmp

    Filesize

    168KB

  • memory/1756-79-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1756-73-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1960-62-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1960-67-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1960-61-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1960-60-0x0000000075A11000-0x0000000075A13000-memory.dmp

    Filesize

    8KB

  • memory/1960-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB