Analysis

  • max time kernel
    145s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/09/2022, 12:15

General

  • Target

    file.exe

  • Size

    786KB

  • MD5

    247473e7beb01a66d28e0684522367ec

  • SHA1

    d6025dbe65f14467a7e57720e0831e2ce66e1c07

  • SHA256

    102dd0efbf781cffcc347d8faba62abac6f2720e8b58ef98032a43c5f68c99c0

  • SHA512

    b40b9222406929cef67d1bbadcedd5c90bba96d1f3759133269b6e2d2f5fc8072eeb8bd6d4edb35e714125188ef8e3366aeb8ba47006ed7271f631eb16a778d2

  • SSDEEP

    24576:jCZ37uDdFnwuvrdKLtUNC87V/ny3ed5EzLi:jlrwuvrdnNr1nyME

Malware Config

Extracted

Family

djvu

C2

http://acacaca.org/test3/get.php

Attributes
  • extension

    .eemv

  • offline_id

    5IVlpkccZlJz0AZ5atgGWVKe9CGAnXjohDf40mt1

  • 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-0e5rCKsYCc 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: 0560Jhyjd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 11 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
  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4040
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:624
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\1c8831ec-4215-48d2-a02e-a2c317a89197" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1376
      • C:\Users\Admin\AppData\Local\Temp\file.exe
        "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4968
        • C:\Users\Admin\AppData\Local\Temp\file.exe
          "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1908
          • C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build2.exe
            "C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3036
            • C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build2.exe
              "C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\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:3920
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" @Au/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:2108
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:4908
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:3576
          • C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build3.exe
            "C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2868
            • 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:1316
  • 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:4068
    • 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:4804

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        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

          ea3ead1b160922fb25b1b9d766a56fa5

          SHA1

          9f61cb0a5a80fa5ba776f71fed4728d002d3aca1

          SHA256

          4080213fba647d43c0ac02710ac7b631c23f8f791930016045cda9aeec1b6867

          SHA512

          ec817bdc668bff4c266ca8b6a6c4068251926714262a95f9ac7f7565e2d66a26371589182d0ba1d03fa482d99430b865cb7eb24becf92b72e45f20b26a215c15

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

          Filesize

          1KB

          MD5

          e9e482bf825221326b7c080ef52e5036

          SHA1

          67244c170dad567630298f89364a5e9626e2517a

          SHA256

          60843d5086f10e833ca98696967f1a39ea04a2ffee6d87679b5803092b9cfa71

          SHA512

          c7a5fd63c0faa2a5cd8be90c7dcf10d8dd564964dc4b8ab4fa1a7a188fa89094563f595c94f4ea133582cfbcf9cc90cb74bd273924b7fa5eadae868bced51440

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

          Filesize

          488B

          MD5

          0f3771062cc18e8a8fbce416b96ff68f

          SHA1

          ba16dcc8a8867bc9a23f3439e0d928dca1c00fa4

          SHA256

          2824d3fc15dfcbeaa469a9a83a9e3d8a873de55750fbb608631a26e1417be229

          SHA512

          7b6bb293f2aa7b0cac6a65eb6d26c3b1940b1da80e5e0c63980bde660b59c474f7fb17379eda47708e0d92b466d42e38647bd36e39247ae5ee7ad9756c8111f7

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

          Filesize

          482B

          MD5

          823915fdb21ecf1f2a8da28cb1dd80f6

          SHA1

          1d498b24de02ad26f4fb7c0f479a661d03f5fb10

          SHA256

          60ce9d0d3f0b74db51e9a5def0868419ae3964d7b50647fe0d5426362eca57cd

          SHA512

          0a5a765d219d744e7774604fbc754adef387ee1b223b3d43e1a3ed93c63866dd14245e1bd7e0fb7da60d396a30ace4c39981e250d72d29008cc236366fc63e86

        • C:\Users\Admin\AppData\Local\1c8831ec-4215-48d2-a02e-a2c317a89197\file.exe

          Filesize

          786KB

          MD5

          247473e7beb01a66d28e0684522367ec

          SHA1

          d6025dbe65f14467a7e57720e0831e2ce66e1c07

          SHA256

          102dd0efbf781cffcc347d8faba62abac6f2720e8b58ef98032a43c5f68c99c0

          SHA512

          b40b9222406929cef67d1bbadcedd5c90bba96d1f3759133269b6e2d2f5fc8072eeb8bd6d4edb35e714125188ef8e3366aeb8ba47006ed7271f631eb16a778d2

        • C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build2.exe

          Filesize

          376KB

          MD5

          8b01bb02b7aeb097ba96dc7628575ca0

          SHA1

          11046fb024f695b1dc7a3a0be9167cb4e85548c6

          SHA256

          7abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a

          SHA512

          64cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35

        • C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build2.exe

          Filesize

          376KB

          MD5

          8b01bb02b7aeb097ba96dc7628575ca0

          SHA1

          11046fb024f695b1dc7a3a0be9167cb4e85548c6

          SHA256

          7abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a

          SHA512

          64cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35

        • C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build2.exe

          Filesize

          376KB

          MD5

          8b01bb02b7aeb097ba96dc7628575ca0

          SHA1

          11046fb024f695b1dc7a3a0be9167cb4e85548c6

          SHA256

          7abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a

          SHA512

          64cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35

        • C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\3739163c-5493-4ae4-b2d1-03fabecc543c\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

        • memory/624-136-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/624-142-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/624-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/624-134-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/624-133-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1908-148-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1908-147-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1908-161-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1908-145-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3036-170-0x0000000000960000-0x00000000009AA000-memory.dmp

          Filesize

          296KB

        • memory/3036-168-0x0000000000A48000-0x0000000000A74000-memory.dmp

          Filesize

          176KB

        • memory/3920-169-0x0000000000400000-0x000000000045E000-memory.dmp

          Filesize

          376KB

        • memory/3920-194-0x0000000000400000-0x000000000045E000-memory.dmp

          Filesize

          376KB

        • memory/3920-166-0x0000000000400000-0x000000000045E000-memory.dmp

          Filesize

          376KB

        • memory/3920-171-0x0000000000400000-0x000000000045E000-memory.dmp

          Filesize

          376KB

        • memory/3920-172-0x0000000000400000-0x000000000045E000-memory.dmp

          Filesize

          376KB

        • memory/3920-173-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/4040-160-0x0000000002370000-0x000000000248B000-memory.dmp

          Filesize

          1.1MB

        • memory/4040-137-0x0000000002370000-0x000000000248B000-memory.dmp

          Filesize

          1.1MB

        • memory/4040-135-0x0000000002221000-0x00000000022B3000-memory.dmp

          Filesize

          584KB

        • memory/4968-146-0x000000000214A000-0x00000000021DC000-memory.dmp

          Filesize

          584KB