Analysis

  • max time kernel
    97s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/12/2022, 20:42

General

  • Target

    450b342676393ce9412cda8beee9fb1e46a936415e807b9715d7add4adedb7f7.exe

  • Size

    802KB

  • MD5

    7c3215984ddaf15491097c8b14e5343c

  • SHA1

    6853ba2b5458c99695f218a7b0b0e169e9840744

  • SHA256

    450b342676393ce9412cda8beee9fb1e46a936415e807b9715d7add4adedb7f7

  • SHA512

    04a344a5b38c149cbc691084178504863beec16e4bc81cdf21882f9235d91c24b656e20276b2275c67a14167076c34da64491979aec5c5ff47814535dbd66c13

  • SSDEEP

    24576:i4W+G52j5IWuHtKK1DFE3ISk7YI8nmtjd2:pV56WkK4FE3IbKwJ

Malware Config

Extracted

Family

djvu

C2

http://ex3mall.com/test1/get.php

Attributes
  • extension

    .isal

  • offline_id

    m3KmScxfDyEQzJYP8qjOSfP4FvpsOXlekGuMPzt1

  • payload_url

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

    http://ex3mall.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-oWam3yYrSr 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: 0620JOsie

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 10 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\450b342676393ce9412cda8beee9fb1e46a936415e807b9715d7add4adedb7f7.exe
    "C:\Users\Admin\AppData\Local\Temp\450b342676393ce9412cda8beee9fb1e46a936415e807b9715d7add4adedb7f7.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5100
    • C:\Users\Admin\AppData\Local\Temp\450b342676393ce9412cda8beee9fb1e46a936415e807b9715d7add4adedb7f7.exe
      "C:\Users\Admin\AppData\Local\Temp\450b342676393ce9412cda8beee9fb1e46a936415e807b9715d7add4adedb7f7.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1012
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\ea02af0f-e2ab-463b-8799-a35c8e4f902f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4308
      • C:\Users\Admin\AppData\Local\Temp\450b342676393ce9412cda8beee9fb1e46a936415e807b9715d7add4adedb7f7.exe
        "C:\Users\Admin\AppData\Local\Temp\450b342676393ce9412cda8beee9fb1e46a936415e807b9715d7add4adedb7f7.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4172
        • C:\Users\Admin\AppData\Local\Temp\450b342676393ce9412cda8beee9fb1e46a936415e807b9715d7add4adedb7f7.exe
          "C:\Users\Admin\AppData\Local\Temp\450b342676393ce9412cda8beee9fb1e46a936415e807b9715d7add4adedb7f7.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2236
          • C:\Users\Admin\AppData\Local\38dbd7a7-c51f-4959-9be1-143a485dac26\build2.exe
            "C:\Users\Admin\AppData\Local\38dbd7a7-c51f-4959-9be1-143a485dac26\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4780
            • C:\Users\Admin\AppData\Local\38dbd7a7-c51f-4959-9be1-143a485dac26\build2.exe
              "C:\Users\Admin\AppData\Local\38dbd7a7-c51f-4959-9be1-143a485dac26\build2.exe"
              6⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4600
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\38dbd7a7-c51f-4959-9be1-143a485dac26\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:4700
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4252
          • C:\Users\Admin\AppData\Local\38dbd7a7-c51f-4959-9be1-143a485dac26\build3.exe
            "C:\Users\Admin\AppData\Local\38dbd7a7-c51f-4959-9be1-143a485dac26\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2104
            • 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:2912
  • 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:1064
    • 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:4328

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • C:\ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

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

    Filesize

    2KB

    MD5

    3446452e22ba2f0059636e6b38bde4e6

    SHA1

    58ecd15765e6506b2a224d739f9cbe49350765d1

    SHA256

    7b9afbbe4ae8b3aecaa47b75f9fb178d864b1f138438d34c58ee7e2ec16be4c2

    SHA512

    9adc462d9531d228656dfc7c59ad0bb3acbdfc86c19a24cc8b703c96ff20e1d1296299f418f61ae7a9dcc9dfe920b8ca6a11209edbcb3c630d8ddb92c9f17ef1

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

    Filesize

    1KB

    MD5

    727b3211cc6431ef88585369c6d3551b

    SHA1

    56ce91da576d5973625a094d93d5f280a4827e97

    SHA256

    b8fbfc272d61dea1f6880ed2a51565be1702f41976a3754e83e0ee31bc283384

    SHA512

    3aa1c7dbed1f3135f110c3a8118e570a500936c54add455a7b41965ee9495186b234a09f166cd5a09fd94dc4affe0153b0b1c652b5c091e86065e3c584cd5b98

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

    Filesize

    488B

    MD5

    c2b95d8f213a4baa9a1f01d04f2b60ab

    SHA1

    b79f1fc017c2adce8721f68e064aa2ff04ad0d95

    SHA256

    18351c6727b3449cb42350f424ae291b3d83de9f77defc9c2120a0e158f2b4c4

    SHA512

    bd06dbc1629a6b5e87dd60ab43df683b97e9f6dfe1736f50041866299f0407aa2011d0c029699bc38e1af5622ee8425a516e236f4888c35c639bfd37c11d4669

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

    Filesize

    482B

    MD5

    7431fef60c909da33db4e577414e9f27

    SHA1

    55b4042932655dab21f5f0ca87495a195a8010eb

    SHA256

    2166c0da603f644fc0eb4f2976ea1a451b92c942ab63e0e03ca6200850a772e3

    SHA512

    65dff5b81b62eb8036952a91f50f86c6310c7e9d7d7697fa79f21f8e14efbde6123cbab50684d03dbe68fb196227e89420621a08d270c25e64fb412d54bdce09

  • C:\Users\Admin\AppData\Local\38dbd7a7-c51f-4959-9be1-143a485dac26\build2.exe

    Filesize

    409KB

    MD5

    a131064868de7468d2e768211431401b

    SHA1

    381ad582f72b30b4764afe0a817569b384be65a2

    SHA256

    027bcfc4c5b4a06371e94f4a6b5f69cbee5bcad651d91115132844a2c10885a1

    SHA512

    40fc84899d7bed5c49980f984e3c1446dece3861e5e107fa71e1876f4b778aa8369f03422a971d144f8e65f62a109f53ba94e86bc6ddec478d1bc71f3bb29309

  • C:\Users\Admin\AppData\Local\38dbd7a7-c51f-4959-9be1-143a485dac26\build2.exe

    Filesize

    409KB

    MD5

    a131064868de7468d2e768211431401b

    SHA1

    381ad582f72b30b4764afe0a817569b384be65a2

    SHA256

    027bcfc4c5b4a06371e94f4a6b5f69cbee5bcad651d91115132844a2c10885a1

    SHA512

    40fc84899d7bed5c49980f984e3c1446dece3861e5e107fa71e1876f4b778aa8369f03422a971d144f8e65f62a109f53ba94e86bc6ddec478d1bc71f3bb29309

  • C:\Users\Admin\AppData\Local\38dbd7a7-c51f-4959-9be1-143a485dac26\build2.exe

    Filesize

    409KB

    MD5

    a131064868de7468d2e768211431401b

    SHA1

    381ad582f72b30b4764afe0a817569b384be65a2

    SHA256

    027bcfc4c5b4a06371e94f4a6b5f69cbee5bcad651d91115132844a2c10885a1

    SHA512

    40fc84899d7bed5c49980f984e3c1446dece3861e5e107fa71e1876f4b778aa8369f03422a971d144f8e65f62a109f53ba94e86bc6ddec478d1bc71f3bb29309

  • C:\Users\Admin\AppData\Local\38dbd7a7-c51f-4959-9be1-143a485dac26\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\38dbd7a7-c51f-4959-9be1-143a485dac26\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\ea02af0f-e2ab-463b-8799-a35c8e4f902f\450b342676393ce9412cda8beee9fb1e46a936415e807b9715d7add4adedb7f7.exe

    Filesize

    802KB

    MD5

    7c3215984ddaf15491097c8b14e5343c

    SHA1

    6853ba2b5458c99695f218a7b0b0e169e9840744

    SHA256

    450b342676393ce9412cda8beee9fb1e46a936415e807b9715d7add4adedb7f7

    SHA512

    04a344a5b38c149cbc691084178504863beec16e4bc81cdf21882f9235d91c24b656e20276b2275c67a14167076c34da64491979aec5c5ff47814535dbd66c13

  • 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/1012-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1012-133-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1012-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1012-134-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1012-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-168-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-145-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-152-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4172-146-0x00000000021BC000-0x000000000224E000-memory.dmp

    Filesize

    584KB

  • memory/4600-159-0x0000000000400000-0x0000000000467000-memory.dmp

    Filesize

    412KB

  • memory/4600-163-0x0000000000400000-0x0000000000467000-memory.dmp

    Filesize

    412KB

  • memory/4600-169-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/4600-162-0x0000000000400000-0x0000000000467000-memory.dmp

    Filesize

    412KB

  • memory/4600-190-0x0000000000400000-0x0000000000467000-memory.dmp

    Filesize

    412KB

  • memory/4600-157-0x0000000000400000-0x0000000000467000-memory.dmp

    Filesize

    412KB

  • memory/4780-161-0x00000000005C0000-0x0000000000613000-memory.dmp

    Filesize

    332KB

  • memory/4780-160-0x0000000000678000-0x00000000006A6000-memory.dmp

    Filesize

    184KB

  • memory/5100-135-0x0000000000971000-0x0000000000A03000-memory.dmp

    Filesize

    584KB

  • memory/5100-136-0x0000000002210000-0x000000000232B000-memory.dmp

    Filesize

    1.1MB