Analysis

  • max time kernel
    75s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/09/2022, 19:40

General

  • Target

    55f23721eb40f9900e8b8dad50d467e2be8ba729fbe0e477b02115b260b9d390.exe

  • Size

    727KB

  • MD5

    4c1b58ebff931967eea407695543e876

  • SHA1

    2713f348393fa9054d560abd46897e1412981ebc

  • SHA256

    55f23721eb40f9900e8b8dad50d467e2be8ba729fbe0e477b02115b260b9d390

  • SHA512

    ad87bcf988e7233f32f063e2cb490946b997954c31111b187a5821c43f558c00c831b53eb1149d3aab4ab35b9a2ec268b33ae42ab33b1a82990fb762e3ba46ce

  • SSDEEP

    12288:g7XpdQ+Y/W8mRIF6/XtFZj5ktJYMgH9/7nWeAeG/4NNcWa0QwoKT3DqcKUF:grpdQ+Y/W8XF6vxiJngd/7lGw3cWCpRy

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 10 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

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

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

  • Loads dropped DLL 3 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.

  • 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 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\55f23721eb40f9900e8b8dad50d467e2be8ba729fbe0e477b02115b260b9d390.exe
    "C:\Users\Admin\AppData\Local\Temp\55f23721eb40f9900e8b8dad50d467e2be8ba729fbe0e477b02115b260b9d390.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4480
    • C:\Users\Admin\AppData\Local\Temp\55f23721eb40f9900e8b8dad50d467e2be8ba729fbe0e477b02115b260b9d390.exe
      "C:\Users\Admin\AppData\Local\Temp\55f23721eb40f9900e8b8dad50d467e2be8ba729fbe0e477b02115b260b9d390.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1704
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\734b48ca-dc4e-4eba-afb7-6a290f1d0aec" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1448
      • C:\Users\Admin\AppData\Local\Temp\55f23721eb40f9900e8b8dad50d467e2be8ba729fbe0e477b02115b260b9d390.exe
        "C:\Users\Admin\AppData\Local\Temp\55f23721eb40f9900e8b8dad50d467e2be8ba729fbe0e477b02115b260b9d390.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1356
        • C:\Users\Admin\AppData\Local\Temp\55f23721eb40f9900e8b8dad50d467e2be8ba729fbe0e477b02115b260b9d390.exe
          "C:\Users\Admin\AppData\Local\Temp\55f23721eb40f9900e8b8dad50d467e2be8ba729fbe0e477b02115b260b9d390.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1312
          • C:\Users\Admin\AppData\Local\3b0294bc-71d2-4db3-8872-31e942b4c373\build2.exe
            "C:\Users\Admin\AppData\Local\3b0294bc-71d2-4db3-8872-31e942b4c373\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3092
            • C:\Users\Admin\AppData\Local\3b0294bc-71d2-4db3-8872-31e942b4c373\build2.exe
              "C:\Users\Admin\AppData\Local\3b0294bc-71d2-4db3-8872-31e942b4c373\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:4076
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\3b0294bc-71d2-4db3-8872-31e942b4c373\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:4104
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:3744
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:2448

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\mozglue.dll

          Filesize

          133KB

          MD5

          8f73c08a9660691143661bf7332c3c27

          SHA1

          37fa65dd737c50fda710fdbde89e51374d0c204a

          SHA256

          3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

          SHA512

          0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

        • C:\ProgramData\nss3.dll

          Filesize

          1.2MB

          MD5

          bfac4e3c5908856ba17d41edcd455a51

          SHA1

          8eec7e888767aa9e4cca8ff246eb2aacb9170428

          SHA256

          e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

          SHA512

          2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

        • C:\ProgramData\sqlite3.dll

          Filesize

          630KB

          MD5

          e477a96c8f2b18d6b5c27bde49c990bf

          SHA1

          e980c9bf41330d1e5bd04556db4646a0210f7409

          SHA256

          16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

          SHA512

          335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

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

          Filesize

          2KB

          MD5

          9cd19ed49787d5bf969ac81a2dbf7ce9

          SHA1

          4ff7b3372f9778f210014bdd7989d6f9442caa37

          SHA256

          5e317a2565c34c5d13efedd5a58537a9f255df17457a567e5fcc061962475b22

          SHA512

          589a98c719b6f67e875cc05438d4801d8025e8661bc30d51351df864314f0f4e5f35aa27422954a43eddd9ca04903043b46a47335311586f709e8eeae87cf7b9

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

          Filesize

          1KB

          MD5

          7c27ffae0cbd6d55b86f387667635294

          SHA1

          6df10a537a970852086711da85ae84f7355bff72

          SHA256

          b6a9400010fea1af51104c2b48fdd4383d8b7a81bd62a22c188db3cdb7413503

          SHA512

          140752fd448ed5cd01c5463d67b7dd2c5c111fd4256d3686b792bc0ff788bed49fdfe901402fdb080b9a6c0789725dda6256280120fadc5aca1f127a552e13d6

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

          Filesize

          488B

          MD5

          03d6d6938dd2668461fec3557dba7679

          SHA1

          bfdf021deb5833857d7292720875ba48668ca16a

          SHA256

          4778cd32a882d865030966774b0fdb152393707ed81bea895ff2985fa6fed46a

          SHA512

          c31a333346439ba63d0bc04cba86c52985c2a07a7758a775b22e3db345a7d56d9b501dc669637d6907ea69cf11e38afcad4e67a8555cbeacca37ad0dbfc99576

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

          Filesize

          482B

          MD5

          44106472a2dcd90384f363bfefe2ce9b

          SHA1

          ed32e2bba417de0f5bbcd18b704cbd52d613d3e2

          SHA256

          3ccc21634185d53e03e4e151544bd95f38cbb605665c190d133316b4481e4f46

          SHA512

          d381885e481f4e4344c936b716a5d017c5c42cb9636f4e38381fc4fc8db43dfc118f6e066835f1570d4d1135f198025a19aa4cdddaebf12ece5945ad7172a04e

        • C:\Users\Admin\AppData\Local\3b0294bc-71d2-4db3-8872-31e942b4c373\build2.exe

          Filesize

          383KB

          MD5

          8d7db6982df46c3b0f0cc879d892c08a

          SHA1

          64e3d7ab4793aeb05d18a82159c579e05c45fd71

          SHA256

          116e15e94d70dde65f91f155580bd9b34ff1956b9ebe1a53b6bce912b281c1f6

          SHA512

          0eeb242e6e1356a2a9e3183f12439ef36fac40e27ac8c0df5f591c7b3c1324145627c92c3fee15aedee2c1e8cc3b966152af73a33196166c2c1bfbbd979bdb5b

        • C:\Users\Admin\AppData\Local\3b0294bc-71d2-4db3-8872-31e942b4c373\build2.exe

          Filesize

          383KB

          MD5

          8d7db6982df46c3b0f0cc879d892c08a

          SHA1

          64e3d7ab4793aeb05d18a82159c579e05c45fd71

          SHA256

          116e15e94d70dde65f91f155580bd9b34ff1956b9ebe1a53b6bce912b281c1f6

          SHA512

          0eeb242e6e1356a2a9e3183f12439ef36fac40e27ac8c0df5f591c7b3c1324145627c92c3fee15aedee2c1e8cc3b966152af73a33196166c2c1bfbbd979bdb5b

        • C:\Users\Admin\AppData\Local\3b0294bc-71d2-4db3-8872-31e942b4c373\build2.exe

          Filesize

          383KB

          MD5

          8d7db6982df46c3b0f0cc879d892c08a

          SHA1

          64e3d7ab4793aeb05d18a82159c579e05c45fd71

          SHA256

          116e15e94d70dde65f91f155580bd9b34ff1956b9ebe1a53b6bce912b281c1f6

          SHA512

          0eeb242e6e1356a2a9e3183f12439ef36fac40e27ac8c0df5f591c7b3c1324145627c92c3fee15aedee2c1e8cc3b966152af73a33196166c2c1bfbbd979bdb5b

        • C:\Users\Admin\AppData\Local\734b48ca-dc4e-4eba-afb7-6a290f1d0aec\55f23721eb40f9900e8b8dad50d467e2be8ba729fbe0e477b02115b260b9d390.exe

          Filesize

          727KB

          MD5

          4c1b58ebff931967eea407695543e876

          SHA1

          2713f348393fa9054d560abd46897e1412981ebc

          SHA256

          55f23721eb40f9900e8b8dad50d467e2be8ba729fbe0e477b02115b260b9d390

          SHA512

          ad87bcf988e7233f32f063e2cb490946b997954c31111b187a5821c43f558c00c831b53eb1149d3aab4ab35b9a2ec268b33ae42ab33b1a82990fb762e3ba46ce

        • memory/1312-152-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1312-145-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1312-147-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1312-170-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1356-146-0x00000000048C9000-0x000000000495A000-memory.dmp

          Filesize

          580KB

        • memory/1704-137-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1704-142-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1704-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1704-133-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1704-134-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3092-161-0x0000000000AF8000-0x0000000000B24000-memory.dmp

          Filesize

          176KB

        • memory/3092-162-0x00000000009B0000-0x00000000009F9000-memory.dmp

          Filesize

          292KB

        • memory/4076-159-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/4076-160-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/4076-163-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/4076-157-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/4076-168-0x0000000000400000-0x000000000045D000-memory.dmp

          Filesize

          372KB

        • memory/4480-136-0x0000000004A10000-0x0000000004B2B000-memory.dmp

          Filesize

          1.1MB

        • memory/4480-135-0x0000000004977000-0x0000000004A08000-memory.dmp

          Filesize

          580KB