Analysis

  • max time kernel
    97s
  • max time network
    127s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    24/04/2022, 10:43

General

  • Target

    ee605b4486c235c4754dded77bbcc814e97bf855d2a14421d3096ddd25422428.exe

  • Size

    727KB

  • MD5

    80d03773664b6ca5f408c7829783f25a

  • SHA1

    e61cec291daff262ff34febc9625ed6770b70bd2

  • SHA256

    ee605b4486c235c4754dded77bbcc814e97bf855d2a14421d3096ddd25422428

  • SHA512

    be86e68f345341435400391b6712120fb9bfd0e9f8bc9dd9ac843624814aa7dd9743b949d3595ca7f3117161e56959f049dcae36b78f016ce4238860725f2890

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/test1/get.php

Attributes
  • extension

    .msjd

  • offline_id

    Xe4NOamOTHZrARTiL9dfVzAylFrEWLGGbr2dngt1

  • payload_url

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

    http://fuyt.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-FT7BNVbXC9 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: 0455JIjdm

rsa_pubkey.plain

Extracted

Family

vidar

Version

51.8

Botnet

517

C2

https://t.me/mm20220428

https://koyu.space/@ronxik123

Attributes
  • profile_id

    517

Signatures

  • Detected Djvu ransomware 10 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer 6 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • 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.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ee605b4486c235c4754dded77bbcc814e97bf855d2a14421d3096ddd25422428.exe
    "C:\Users\Admin\AppData\Local\Temp\ee605b4486c235c4754dded77bbcc814e97bf855d2a14421d3096ddd25422428.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2572
    • C:\Users\Admin\AppData\Local\Temp\ee605b4486c235c4754dded77bbcc814e97bf855d2a14421d3096ddd25422428.exe
      "C:\Users\Admin\AppData\Local\Temp\ee605b4486c235c4754dded77bbcc814e97bf855d2a14421d3096ddd25422428.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2804
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\3b5ab759-5320-4c15-a6d2-5d829a2f15f2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3540
      • C:\Users\Admin\AppData\Local\Temp\ee605b4486c235c4754dded77bbcc814e97bf855d2a14421d3096ddd25422428.exe
        "C:\Users\Admin\AppData\Local\Temp\ee605b4486c235c4754dded77bbcc814e97bf855d2a14421d3096ddd25422428.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2220
        • C:\Users\Admin\AppData\Local\Temp\ee605b4486c235c4754dded77bbcc814e97bf855d2a14421d3096ddd25422428.exe
          "C:\Users\Admin\AppData\Local\Temp\ee605b4486c235c4754dded77bbcc814e97bf855d2a14421d3096ddd25422428.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4568
          • C:\Users\Admin\AppData\Local\78dfca1d-020a-482e-b153-0d0aaf80c16e\build2.exe
            "C:\Users\Admin\AppData\Local\78dfca1d-020a-482e-b153-0d0aaf80c16e\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2316
            • C:\Users\Admin\AppData\Local\78dfca1d-020a-482e-b153-0d0aaf80c16e\build2.exe
              "C:\Users\Admin\AppData\Local\78dfca1d-020a-482e-b153-0d0aaf80c16e\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:4980

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          727B

          MD5

          d9c694c2d95c6812aa0be903de46da96

          SHA1

          df1a733a9c6c27997c798ae4c5715cabe1ffa5e4

          SHA256

          f6f85bc0d1770803a206fbfb83c4cb888b3a24b494feac38baa3ea764cda37c0

          SHA512

          97a2eddf197aa74d1d05241008ead092f836b561bc1ad1d731d91db23d6dcce7a65d3dc1609384a3ad3fd5c858bae6c3a4361588b5a965ebf233f14410864793

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

          Filesize

          471B

          MD5

          ad8e032271f02af2a955ce10661cc3a8

          SHA1

          967d1bd99bea34c3110cc75c0c0d8b8565eae9f9

          SHA256

          d5081bf75d530e9336a6da0f9142bc10f4d06368c365cf0e33f7c99b0f643ce8

          SHA512

          bc69dfb03284cf1b8d172ff55938f238b928a0c7846306d8232ab697f54c771a9acf8b0e04a85e149da87ea8cfd9395605d0d95afc30eae1793e91399aa7eef7

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

          Filesize

          402B

          MD5

          09cf06ef34b97130de704f385e86f7ce

          SHA1

          79acf9f4382f7e3f6382bed856c838ce753616f8

          SHA256

          cd2ce857aed161d3aaec8fac1dfa061cf7ded5a376dbe3afc54466660672b768

          SHA512

          f126420013b75f80217c387b385eb8e594ef1fbd943b9161e89ffc4b201767871dd5dfac8867a6980582260258a5ed8cc1b45c1211a41113caa9c55e4f23ea4a

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

          Filesize

          396B

          MD5

          ffe35957663c4ee55d801a4da543a76b

          SHA1

          852885fc23c82ca0b8881677b21ad2f373caea3a

          SHA256

          b8862e2986c2a647cf7e04763da0a5957da5b78659f97b32839aebce0e60dc53

          SHA512

          ab9e3321713695d911d97df38ae8b60f58e331f5254657c74395a187670975d7403742123c498c8a6c1febf13f9a5b3699cb6ad3686e303343ba54ffa4a07b82

        • C:\Users\Admin\AppData\Local\3b5ab759-5320-4c15-a6d2-5d829a2f15f2\ee605b4486c235c4754dded77bbcc814e97bf855d2a14421d3096ddd25422428.exe

          Filesize

          727KB

          MD5

          80d03773664b6ca5f408c7829783f25a

          SHA1

          e61cec291daff262ff34febc9625ed6770b70bd2

          SHA256

          ee605b4486c235c4754dded77bbcc814e97bf855d2a14421d3096ddd25422428

          SHA512

          be86e68f345341435400391b6712120fb9bfd0e9f8bc9dd9ac843624814aa7dd9743b949d3595ca7f3117161e56959f049dcae36b78f016ce4238860725f2890

        • C:\Users\Admin\AppData\Local\78dfca1d-020a-482e-b153-0d0aaf80c16e\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\78dfca1d-020a-482e-b153-0d0aaf80c16e\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\78dfca1d-020a-482e-b153-0d0aaf80c16e\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • \ProgramData\mozglue.dll

          Filesize

          133KB

          MD5

          8f73c08a9660691143661bf7332c3c27

          SHA1

          37fa65dd737c50fda710fdbde89e51374d0c204a

          SHA256

          3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

          SHA512

          0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

        • \ProgramData\nss3.dll

          Filesize

          1.2MB

          MD5

          bfac4e3c5908856ba17d41edcd455a51

          SHA1

          8eec7e888767aa9e4cca8ff246eb2aacb9170428

          SHA256

          e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

          SHA512

          2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

        • memory/2316-148-0x0000000000796000-0x00000000007C0000-memory.dmp

          Filesize

          168KB

        • memory/2316-143-0x0000000000796000-0x00000000007C0000-memory.dmp

          Filesize

          168KB

        • memory/2316-149-0x0000000000710000-0x0000000000759000-memory.dmp

          Filesize

          292KB

        • memory/2572-120-0x0000000000970000-0x0000000000A0C000-memory.dmp

          Filesize

          624KB

        • memory/2572-121-0x0000000002280000-0x000000000239B000-memory.dmp

          Filesize

          1.1MB

        • memory/2804-125-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2804-124-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2804-122-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2804-126-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4568-135-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4568-134-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4568-133-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4980-144-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/4980-150-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/4980-147-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/4980-151-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB