Analysis

  • max time kernel
    102s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    23/04/2022, 12:33

General

  • Target

    59b0bd44e688d944e18c26e4210b219646c6e344a697afc53b7ed7a2a0cd40d9.exe

  • Size

    726KB

  • MD5

    9228c937ddef4dda041db1e09c6531a1

  • SHA1

    8c7f463871156afa75f0b61ac2df611a1f59210a

  • SHA256

    59b0bd44e688d944e18c26e4210b219646c6e344a697afc53b7ed7a2a0cd40d9

  • SHA512

    39fd835ceedee853397281199c908d1fd73fed6296c7337ddf2d6e21afc8b89c638a8a340d07d62f794585f75c1181724605d3eb6f42edf1b3c4e9707cd46f98

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 8 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

  • Vidar Stealer 5 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 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.

  • 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\59b0bd44e688d944e18c26e4210b219646c6e344a697afc53b7ed7a2a0cd40d9.exe
    "C:\Users\Admin\AppData\Local\Temp\59b0bd44e688d944e18c26e4210b219646c6e344a697afc53b7ed7a2a0cd40d9.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3516
    • C:\Users\Admin\AppData\Local\Temp\59b0bd44e688d944e18c26e4210b219646c6e344a697afc53b7ed7a2a0cd40d9.exe
      "C:\Users\Admin\AppData\Local\Temp\59b0bd44e688d944e18c26e4210b219646c6e344a697afc53b7ed7a2a0cd40d9.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4272
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\8937023a-8b3f-459d-b4ae-1dc9de12b7d3" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3692
      • C:\Users\Admin\AppData\Local\Temp\59b0bd44e688d944e18c26e4210b219646c6e344a697afc53b7ed7a2a0cd40d9.exe
        "C:\Users\Admin\AppData\Local\Temp\59b0bd44e688d944e18c26e4210b219646c6e344a697afc53b7ed7a2a0cd40d9.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3640
        • C:\Users\Admin\AppData\Local\Temp\59b0bd44e688d944e18c26e4210b219646c6e344a697afc53b7ed7a2a0cd40d9.exe
          "C:\Users\Admin\AppData\Local\Temp\59b0bd44e688d944e18c26e4210b219646c6e344a697afc53b7ed7a2a0cd40d9.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3588
          • C:\Users\Admin\AppData\Local\6a29cc2a-5fbb-41ee-8f02-d4aae08e2dfc\build2.exe
            "C:\Users\Admin\AppData\Local\6a29cc2a-5fbb-41ee-8f02-d4aae08e2dfc\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1204
            • C:\Users\Admin\AppData\Local\6a29cc2a-5fbb-41ee-8f02-d4aae08e2dfc\build2.exe
              "C:\Users\Admin\AppData\Local\6a29cc2a-5fbb-41ee-8f02-d4aae08e2dfc\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:2036

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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

          Filesize

          727B

          MD5

          ae80420644f9d17a1ceb04dfe52b4551

          SHA1

          aca7052dea384b8d31813c11839d16dcef04a4b5

          SHA256

          8893c680c876c7e9a453e301b2763e4310c2fc165bcb8e6cf23ae117f6cff476

          SHA512

          3f742909f7dc09e109f0eec4c245f3be76121dfdab494252eba5edb1907402cf7867cdc7595c529d3445a1676750aebbf9aba4df760ad58645aaf3d897a82a6d

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

          Filesize

          471B

          MD5

          4b48eeea719432bc0719653be71e6ecf

          SHA1

          41367524cf7d0c34d7737722cb2212558fca9938

          SHA256

          2d25e68537528a81bcadb24f24afda11671512a17d04ed304cf138a30b228866

          SHA512

          152b287e3d0c05f3b4dea98a20e1fc39a61008b3d5c4acc7632647bdffc090ef2ea76d4ec3a6d0cf3387c9f2f43fde1624f213908beb9583b6ad43429f551533

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

          Filesize

          402B

          MD5

          5ec9e5e8bdc8683c164c59ed1c67b77f

          SHA1

          12b7bc4d9dd4159f5d2d1674e6ca938b55102274

          SHA256

          050cf5331677e88b2af45e027e890cdde74c90fa2de636cd8a721cab0eb2f8f4

          SHA512

          49ea71815b0c76ce073a3662be77c84613519ac7df850cf9c64d9722a99cdc63c4d4de0d3be87239fda82dd604c76bd560ec8cdd27d6eadea6b4ac021fb8a1c0

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

          Filesize

          396B

          MD5

          4c0559f7087c13903beeb5562fb551cb

          SHA1

          486609102f8848875ee040360135a3f56ecaca4a

          SHA256

          cfe77be9d64e18c956d5cfc32c4f47155b2c41cfffafc377e718125d26154d4c

          SHA512

          3319d4af0f80cd685e13f91a5cc4cc578075eb449138379a33220d47e9f44f8512c67c8186e7695c683170154ca395dddaef616e3b292d21fd07c2e06cdc4588

        • C:\Users\Admin\AppData\Local\6a29cc2a-5fbb-41ee-8f02-d4aae08e2dfc\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\6a29cc2a-5fbb-41ee-8f02-d4aae08e2dfc\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\6a29cc2a-5fbb-41ee-8f02-d4aae08e2dfc\build2.exe

          Filesize

          368KB

          MD5

          ad1b502b6714c0a374b055332018974b

          SHA1

          672f4e44475177ddcb1bfa73db3c5dee0f031bc2

          SHA256

          f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

          SHA512

          0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

        • C:\Users\Admin\AppData\Local\8937023a-8b3f-459d-b4ae-1dc9de12b7d3\59b0bd44e688d944e18c26e4210b219646c6e344a697afc53b7ed7a2a0cd40d9.exe

          Filesize

          726KB

          MD5

          9228c937ddef4dda041db1e09c6531a1

          SHA1

          8c7f463871156afa75f0b61ac2df611a1f59210a

          SHA256

          59b0bd44e688d944e18c26e4210b219646c6e344a697afc53b7ed7a2a0cd40d9

          SHA512

          39fd835ceedee853397281199c908d1fd73fed6296c7337ddf2d6e21afc8b89c638a8a340d07d62f794585f75c1181724605d3eb6f42edf1b3c4e9707cd46f98

        • memory/1204-158-0x0000000000730000-0x0000000000779000-memory.dmp

          Filesize

          292KB

        • memory/1204-156-0x00000000007A8000-0x00000000007D3000-memory.dmp

          Filesize

          172KB

        • memory/2036-157-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/2036-154-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/2036-161-0x0000000060900000-0x0000000060992000-memory.dmp

          Filesize

          584KB

        • memory/2036-159-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/2036-160-0x0000000000400000-0x000000000044C000-memory.dmp

          Filesize

          304KB

        • memory/3516-132-0x0000000000983000-0x0000000000A14000-memory.dmp

          Filesize

          580KB

        • memory/3516-134-0x0000000002240000-0x000000000235B000-memory.dmp

          Filesize

          1.1MB

        • memory/3588-149-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3588-144-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3588-142-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3640-143-0x0000000000849000-0x00000000008DA000-memory.dmp

          Filesize

          580KB

        • memory/4272-135-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4272-136-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4272-133-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4272-131-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB