Analysis

  • max time kernel
    126s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    16-09-2022 08:24

General

  • Target

    file.exe

  • Size

    785KB

  • MD5

    e1d1de041ccff1a36e5b6e6a374123b1

  • SHA1

    ad474b76c6dfff3d4d5df45edff1250118c051a6

  • SHA256

    cd17ea22696ffa81d24beac25ca1354fb1cd7887311af7e2c9f339ac60769f37

  • SHA512

    61c7ec6f05b8f407d44664d43b91da5614fea43e16bc2b58eb92ce57b25ddab8e18e2d7edb066c182dd156a1c5c84199d3aad6e5f4c77e221e39474599de1287

  • SSDEEP

    24576:QmksM/gWxF8xrWpH74wXIZlPrCaO3mIi:Qp9T8xqpH74UIZd9O3m

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 10 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 6 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
  • Modifies system certificate store 2 TTPs 11 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 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:832
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1124
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\5235c33e-9921-4e0e-be8f-e050277fd508" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1612
      • 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:572
        • C:\Users\Admin\AppData\Local\Temp\file.exe
          "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1516
          • C:\Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build2.exe
            "C:\Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2044
            • C:\Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build2.exe
              "C:\Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Modifies system certificate store
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:304
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" รท/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                  PID:1044
                  • C:\Windows\SysWOW64\taskkill.exe
                    taskkill /im build2.exe /f
                    8⤵
                    • Kills process with taskkill
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1592
                  • C:\Windows\SysWOW64\timeout.exe
                    timeout /t 6
                    8⤵
                    • Delays execution with timeout.exe
                    PID:1788
            • C:\Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build3.exe
              "C:\Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build3.exe"
              5⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:1520
              • 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:1716
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {BC710782-8828-489D-B8D3-C22C394FEF49} S-1-5-21-4063495947-34355257-727531523-1000:RYNKSFQE\Admin:Interactive:[1]
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:2036
      • 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:1456
        • 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"
          3⤵
          • Creates scheduled task(s)
          PID:1820

    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

      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

      6d5e241b80819857c146aa61f37e3d33

      SHA1

      1aa9e04a19aa257b4044cd27a50b8204897036b3

      SHA256

      27702d92e4ec3a1809d3ef478838c5ed370d6ce5ce5669b1afdbe22acdbcbb43

      SHA512

      7b20b849018f79d010dbd0ef46bfb75a6181c6149b84d29e0ab63e48e667f83a51a06dc8a87c8408eb18f08fe826e6077742aa0ccb03b321c693e82ffad3cece

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

      Filesize

      344B

      MD5

      de6a046ee5745a27b2d1535042fe0351

      SHA1

      9d7ded989199fc915d3aee95f8eced22eee4135c

      SHA256

      08b9514958959dac7581a06e941239fca03fc1735b743cbcb173f6728386d741

      SHA512

      21baac24442bf287de9da9650eec8c120e9884fc0b0a2ad9e0e93478c686943b818963b345b62ccb1eb81095ed662b9288d650298db985a82eec592e14e7ac2e

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

      Filesize

      482B

      MD5

      f10a143d662da9e9de79c83dc9f96b9c

      SHA1

      bdd841451965d70981640544b771cf36048aa9a6

      SHA256

      134bc6a157d656dad67d95d680959890999232601575ccb315ab0277eeebff5f

      SHA512

      72251b0b65277fdfb42b4948b751a8e648ee0687fa5a7e9b3b0f46a8f0911521ff3ef2061011760609b56d19b0b8efc0ad322b6f00e9817535e7d65a0e13e2f7

    • C:\Users\Admin\AppData\Local\5235c33e-9921-4e0e-be8f-e050277fd508\file.exe

      Filesize

      785KB

      MD5

      e1d1de041ccff1a36e5b6e6a374123b1

      SHA1

      ad474b76c6dfff3d4d5df45edff1250118c051a6

      SHA256

      cd17ea22696ffa81d24beac25ca1354fb1cd7887311af7e2c9f339ac60769f37

      SHA512

      61c7ec6f05b8f407d44664d43b91da5614fea43e16bc2b58eb92ce57b25ddab8e18e2d7edb066c182dd156a1c5c84199d3aad6e5f4c77e221e39474599de1287

    • C:\Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build2.exe

      Filesize

      376KB

      MD5

      8b01bb02b7aeb097ba96dc7628575ca0

      SHA1

      11046fb024f695b1dc7a3a0be9167cb4e85548c6

      SHA256

      7abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a

      SHA512

      64cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35

    • C:\Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build2.exe

      Filesize

      376KB

      MD5

      8b01bb02b7aeb097ba96dc7628575ca0

      SHA1

      11046fb024f695b1dc7a3a0be9167cb4e85548c6

      SHA256

      7abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a

      SHA512

      64cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35

    • C:\Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build2.exe

      Filesize

      376KB

      MD5

      8b01bb02b7aeb097ba96dc7628575ca0

      SHA1

      11046fb024f695b1dc7a3a0be9167cb4e85548c6

      SHA256

      7abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a

      SHA512

      64cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35

    • C:\Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\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

    • \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

    • \Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build2.exe

      Filesize

      376KB

      MD5

      8b01bb02b7aeb097ba96dc7628575ca0

      SHA1

      11046fb024f695b1dc7a3a0be9167cb4e85548c6

      SHA256

      7abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a

      SHA512

      64cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35

    • \Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build2.exe

      Filesize

      376KB

      MD5

      8b01bb02b7aeb097ba96dc7628575ca0

      SHA1

      11046fb024f695b1dc7a3a0be9167cb4e85548c6

      SHA256

      7abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a

      SHA512

      64cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35

    • \Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • \Users\Admin\AppData\Local\f354212e-11c0-4e33-9bee-d77044601480\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • memory/304-99-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/304-100-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/304-102-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/304-108-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/304-92-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/304-129-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/572-71-0x0000000000330000-0x00000000003C1000-memory.dmp

      Filesize

      580KB

    • memory/572-66-0x0000000000330000-0x00000000003C1000-memory.dmp

      Filesize

      580KB

    • memory/832-54-0x0000000000220000-0x00000000002B1000-memory.dmp

      Filesize

      580KB

    • memory/832-58-0x0000000000220000-0x00000000002B1000-memory.dmp

      Filesize

      580KB

    • memory/832-59-0x00000000004D0000-0x00000000005EB000-memory.dmp

      Filesize

      1.1MB

    • memory/1124-62-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1124-60-0x0000000076BA1000-0x0000000076BA3000-memory.dmp

      Filesize

      8KB

    • memory/1124-61-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1124-67-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1124-55-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1516-74-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1516-101-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1516-73-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2044-98-0x0000000000220000-0x000000000026A000-memory.dmp

      Filesize

      296KB

    • memory/2044-96-0x0000000000C8B000-0x0000000000CB7000-memory.dmp

      Filesize

      176KB