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Analysis

  • max time kernel
    141s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    16/09/2022, 06:11

General

  • Target

    file.exe

  • Size

    786KB

  • MD5

    0836c1b98ca4209d6029eeaae7c13d7f

  • SHA1

    ce8299ef9da4cc14ddb11f63cdd1547658e01cda

  • SHA256

    f27f49e12620ec64a2516ddc098578f8f644d33ba8048afd31bda49776788ea2

  • SHA512

    9a447e6ea53cd1d72d96e6c0a19b57cd0dc35253bb12cf22e7243867d0546dda90773a2080e09eb0213d4e9d59af5ae8647626f82fe155422e686fd30bf9af16

  • SSDEEP

    12288:nyedekZc2B6nKBlSzQ+YzVZglZzOlm8p4tLf5ixIui:nyedekeQYUNYZzODpcfoxIui

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 4 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:1492
    • 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:1748
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\742b4a38-5e1a-46c8-bbe7-3d437609cd43" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1556
      • 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:1704
        • 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:1340
          • C:\Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\build2.exe
            "C:\Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:520
            • C:\Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\build2.exe
              "C:\Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\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:1028
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" 0vf/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                  PID:1148
                  • C:\Windows\SysWOW64\taskkill.exe
                    taskkill /im build2.exe /f
                    8⤵
                    • Kills process with taskkill
                    • Suspicious use of AdjustPrivilegeToken
                    PID:572
                  • C:\Windows\SysWOW64\timeout.exe
                    timeout /t 6
                    8⤵
                    • Delays execution with timeout.exe
                    PID:1604
            • C:\Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\build3.exe
              "C:\Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\build3.exe"
              5⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:1516
              • 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:572
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {9E6B32DC-6800-4245-B77C-DD860E0A897F} S-1-5-21-4063495947-34355257-727531523-1000:RYNKSFQE\Admin:Interactive:[1]
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1064
      • 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:868
        • 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:1388

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    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

      43000f2b6637734b621ef9af3fdb7f70

      SHA1

      d2a24eedde845ffaecfcf021b9aabea7a5d39acd

      SHA256

      b7968cd3c92816dab3a110727cae40b10fe83774d89d7a6151b7642d78b873de

      SHA512

      760909e336a0ba116528c1091f72a66b29a9027f64bcd0d5b8412fe50634979340a02ab5e00ae336bd592591653df5598087b97cbfcd19bdc968367e9090a4af

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

      Filesize

      344B

      MD5

      15827a051047be45676c006631b86f7e

      SHA1

      1ae5a2b58f70073d46b77e1d2e7e89af6af01dfc

      SHA256

      a01d88e5400758aba57d5baed149157fa95b81cae776c121294e91e07d164af8

      SHA512

      48aecf576a2c0121bfbe59a21905a197125ed767d41c1285ec0b9e54a0fed2c7e61b32644d6e7a16bcebbddda7843aa55b24309832621bb74dcd680151e94ebb

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

      Filesize

      482B

      MD5

      0fe926fedbee4dc20b30d6ebd39fc6b1

      SHA1

      1bd4afde81fab9411dca28da8bb08febfcd5cf8a

      SHA256

      0017dc4caabeb7ff17192638a224245713c795b7d2dbc70336747a736737b3c3

      SHA512

      3ed5a9df68b7b9e59b96c4fc41592b8870e42fb8870c8d1be869f08c0f9dbc4f416af7b876cfbef6f36562df096c80477465450e7d867d5e42304c24b30103c7

    • C:\Users\Admin\AppData\Local\742b4a38-5e1a-46c8-bbe7-3d437609cd43\file.exe

      Filesize

      786KB

      MD5

      0836c1b98ca4209d6029eeaae7c13d7f

      SHA1

      ce8299ef9da4cc14ddb11f63cdd1547658e01cda

      SHA256

      f27f49e12620ec64a2516ddc098578f8f644d33ba8048afd31bda49776788ea2

      SHA512

      9a447e6ea53cd1d72d96e6c0a19b57cd0dc35253bb12cf22e7243867d0546dda90773a2080e09eb0213d4e9d59af5ae8647626f82fe155422e686fd30bf9af16

    • C:\Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\build2.exe

      Filesize

      376KB

      MD5

      8b01bb02b7aeb097ba96dc7628575ca0

      SHA1

      11046fb024f695b1dc7a3a0be9167cb4e85548c6

      SHA256

      7abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a

      SHA512

      64cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35

    • C:\Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\build2.exe

      Filesize

      376KB

      MD5

      8b01bb02b7aeb097ba96dc7628575ca0

      SHA1

      11046fb024f695b1dc7a3a0be9167cb4e85548c6

      SHA256

      7abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a

      SHA512

      64cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35

    • C:\Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\build2.exe

      Filesize

      376KB

      MD5

      8b01bb02b7aeb097ba96dc7628575ca0

      SHA1

      11046fb024f695b1dc7a3a0be9167cb4e85548c6

      SHA256

      7abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a

      SHA512

      64cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35

    • C:\Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\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\899db304-9806-4e15-a1b1-fd05e2883486\build2.exe

      Filesize

      376KB

      MD5

      8b01bb02b7aeb097ba96dc7628575ca0

      SHA1

      11046fb024f695b1dc7a3a0be9167cb4e85548c6

      SHA256

      7abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a

      SHA512

      64cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35

    • \Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\build2.exe

      Filesize

      376KB

      MD5

      8b01bb02b7aeb097ba96dc7628575ca0

      SHA1

      11046fb024f695b1dc7a3a0be9167cb4e85548c6

      SHA256

      7abb4b2423a93fa4b7a2cd19bcc854cc96d2e9ed20c13b86c39f49fe7cb80e4a

      SHA512

      64cd772d4e319255e32909577ac137966cd47bd295aa3a61a76e52d651d80d313a3cfee7ea88d703bb293931a91558161184de2b76f8e5d9a2358a065c5c5f35

    • \Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • \Users\Admin\AppData\Local\899db304-9806-4e15-a1b1-fd05e2883486\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • memory/520-97-0x00000000001B0000-0x00000000001FA000-memory.dmp

      Filesize

      296KB

    • memory/520-95-0x000000000030B000-0x0000000000337000-memory.dmp

      Filesize

      176KB

    • memory/1028-100-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/1028-129-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/1028-92-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/1028-108-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/1028-102-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/1028-99-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/1340-101-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1340-79-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1340-73-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1492-59-0x0000000001F00000-0x000000000201B000-memory.dmp

      Filesize

      1.1MB

    • memory/1492-58-0x0000000000320000-0x00000000003B2000-memory.dmp

      Filesize

      584KB

    • memory/1492-54-0x0000000000320000-0x00000000003B2000-memory.dmp

      Filesize

      584KB

    • memory/1704-71-0x0000000001CE0000-0x0000000001D72000-memory.dmp

      Filesize

      584KB

    • memory/1704-66-0x0000000001CE0000-0x0000000001D72000-memory.dmp

      Filesize

      584KB

    • memory/1748-61-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1748-55-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1748-67-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1748-60-0x0000000076BA1000-0x0000000076BA3000-memory.dmp

      Filesize

      8KB

    • memory/1748-62-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB