Analysis

  • max time kernel
    300s
  • max time network
    169s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    15/01/2024, 04:55

General

  • Target

    aa0d51394f696edbe195cb4e279f135f85a5acad6eed5d2cb542c06816cf2293.exe

  • Size

    733KB

  • MD5

    95a407562c1f5ff8d8c1de430349eb99

  • SHA1

    638407b2f67ac47b69c5fa03b55144563e1c440d

  • SHA256

    aa0d51394f696edbe195cb4e279f135f85a5acad6eed5d2cb542c06816cf2293

  • SHA512

    d457d3275a4f0ee66a984b203e9fa5a1403e8f9ecbfd5e9cde11bab1e486fc0cb554cd05c6c892bf9ae59b7aada67eafca6a6deb39dd2051310fe757f28949e5

  • SSDEEP

    12288:UfLtmBByRWA5neQMR9wcJBzSco6zPIB8+5vTxAGuIQHBupiSoL9zX4w4GSYf:EtmBEwAw3zrBzSOzY5tNuJupiSoLZvv

Malware Config

Extracted

Family

djvu

C2

http://habrafa.com/test1/get.php

Attributes
  • extension

    .cdpo

  • offline_id

    Bn3q97hwLouKbhkQRNO4SeV07gjdEQVm8NKhg0t1

  • payload_url

    http://brusuax.com/dl/build2.exe

    http://habrafa.com/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-FCWSCsjEWS Price of private key and decrypt software is $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. 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: 0844OSkw

rsa_pubkey.plain

Signatures

  • Detect Vidar Stealer 5 IoCs
  • Detected Djvu ransomware 15 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 12 IoCs
  • Loads dropped DLL 8 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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 8 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\aa0d51394f696edbe195cb4e279f135f85a5acad6eed5d2cb542c06816cf2293.exe
    "C:\Users\Admin\AppData\Local\Temp\aa0d51394f696edbe195cb4e279f135f85a5acad6eed5d2cb542c06816cf2293.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2196
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\47bd7c2f-ee7b-492f-a462-50d917e3781f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      PID:1432
    • C:\Users\Admin\AppData\Local\Temp\aa0d51394f696edbe195cb4e279f135f85a5acad6eed5d2cb542c06816cf2293.exe
      "C:\Users\Admin\AppData\Local\Temp\aa0d51394f696edbe195cb4e279f135f85a5acad6eed5d2cb542c06816cf2293.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2580
      • C:\Users\Admin\AppData\Local\Temp\aa0d51394f696edbe195cb4e279f135f85a5acad6eed5d2cb542c06816cf2293.exe
        "C:\Users\Admin\AppData\Local\Temp\aa0d51394f696edbe195cb4e279f135f85a5acad6eed5d2cb542c06816cf2293.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1804
        • C:\Users\Admin\AppData\Local\0104da44-6fb6-4f48-bacf-8fe9cd8d70f8\build2.exe
          "C:\Users\Admin\AppData\Local\0104da44-6fb6-4f48-bacf-8fe9cd8d70f8\build2.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:1536
          • C:\Users\Admin\AppData\Local\0104da44-6fb6-4f48-bacf-8fe9cd8d70f8\build2.exe
            "C:\Users\Admin\AppData\Local\0104da44-6fb6-4f48-bacf-8fe9cd8d70f8\build2.exe"
            5⤵
            • Executes dropped EXE
            • Modifies system certificate store
            • Suspicious use of WriteProcessMemory
            PID:1748
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1748 -s 1440
              6⤵
              • Loads dropped DLL
              • Program crash
              PID:3032
        • C:\Users\Admin\AppData\Local\0104da44-6fb6-4f48-bacf-8fe9cd8d70f8\build3.exe
          "C:\Users\Admin\AppData\Local\0104da44-6fb6-4f48-bacf-8fe9cd8d70f8\build3.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:764
          • C:\Users\Admin\AppData\Local\0104da44-6fb6-4f48-bacf-8fe9cd8d70f8\build3.exe
            "C:\Users\Admin\AppData\Local\0104da44-6fb6-4f48-bacf-8fe9cd8d70f8\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2356
            • 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:280
  • C:\Users\Admin\AppData\Local\Temp\aa0d51394f696edbe195cb4e279f135f85a5acad6eed5d2cb542c06816cf2293.exe
    "C:\Users\Admin\AppData\Local\Temp\aa0d51394f696edbe195cb4e279f135f85a5acad6eed5d2cb542c06816cf2293.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2192
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {89AF5E08-029A-464F-87A0-2EE977D661BE} S-1-5-21-1603059206-2004189698-4139800220-1000:AILVMYUM\Admin:Interactive:[1]
    1⤵
      PID:2712
      • 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 SetThreadContext
        PID:2716
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:2548
          • 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"
            4⤵
            • Creates scheduled task(s)
            PID:2288
      • 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 SetThreadContext
        PID:1132
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:1332
      • 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 SetThreadContext
        PID:1012
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:2444
      • 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 SetThreadContext
        PID:2556
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:2024

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

            Filesize

            1KB

            MD5

            b7470a9aa569b259d4c2bb3b80ae3aa3

            SHA1

            093290296b7f1e402ef96e4b33a88f064aa401eb

            SHA256

            ee8aeed77dd9f1631fa75845214d75bfe04951a61892410ee369035e13fd14c6

            SHA512

            4da3fc09260692f159c37b068664852931b712c8173de5e4b294799ac33ecf179055aaeb016fd0afad88cbfc50a571c4c88033dca56a573431af7462ea7979be

          • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

            Filesize

            724B

            MD5

            8202a1cd02e7d69597995cabbe881a12

            SHA1

            8858d9d934b7aa9330ee73de6c476acf19929ff6

            SHA256

            58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

            SHA512

            97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

          • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

            Filesize

            410B

            MD5

            ea007376bc121793f2e73461573265ed

            SHA1

            5a4b11700b234824fdd96d588ed7e927ee83d7cd

            SHA256

            8bbafd8bc25a858899f87681352e4cfc41a19de628489e3659247ac09445f4ae

            SHA512

            534750d75206327358b444a38a27bb62b16cd9d48b817a2fad5371172100cd63480faf0de88b65f3e2a3dc0a97f0e921a2de8d6f16919ec0ddc1dc5a314cb930

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

            Filesize

            344B

            MD5

            30633d103473b8cd118489ee729f22f1

            SHA1

            49fc2f080762b7f427356231a6254c08a77eba88

            SHA256

            f664bbcef779325efa40af522f55ddb70f2b06e7744330d06b37e800e8363b53

            SHA512

            4f3827143aad52c2c25805f1671386cc4e9f4b4787fece422beddf5b468d50c7af6c0f57d9d9a38b302f6992301a52d5783e6fa2f97be6dc6e9d90d5debd0220

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

            Filesize

            344B

            MD5

            6d7d152fb25ee2df64347110e3013dc0

            SHA1

            23b37f681135ee94b225a7068777fb10de55c2bc

            SHA256

            ecab10539d28835dc8fe625f89d5e5f195f3fbac2ad20c455a9bd9afbeb52ce2

            SHA512

            b2b8ca81bb81af332e0ca1b06100def99a55c2c22c3d9b464c6728ffc66d1aa500e4f1bc2ea20147dc1334bab8d9cefa5cfbfbe647524f6947b2a8c42c9bf7c4

          • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

            Filesize

            392B

            MD5

            5352ae64240eb7600915d14885b51f6d

            SHA1

            9f86a9fd06c7cab910a9a98ab6664687376a7438

            SHA256

            47e768fcf1623a13df23cdd5247ab62211036d0c5d19952a77f3851f83d84cd7

            SHA512

            6d4c66b74d90e6c562ea996e55827a27ad8ffa6a6cceadb0ae1af237fe39d74d0472cdd0a28afded99e1a7695fff79f704de515809c7000d30eb2a380eeaeab9

          • C:\Users\Admin\AppData\Local\0104da44-6fb6-4f48-bacf-8fe9cd8d70f8\build3.exe

            Filesize

            299KB

            MD5

            41b883a061c95e9b9cb17d4ca50de770

            SHA1

            1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

            SHA256

            fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

            SHA512

            cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

          • C:\Users\Admin\AppData\Local\47bd7c2f-ee7b-492f-a462-50d917e3781f\aa0d51394f696edbe195cb4e279f135f85a5acad6eed5d2cb542c06816cf2293.exe

            Filesize

            733KB

            MD5

            95a407562c1f5ff8d8c1de430349eb99

            SHA1

            638407b2f67ac47b69c5fa03b55144563e1c440d

            SHA256

            aa0d51394f696edbe195cb4e279f135f85a5acad6eed5d2cb542c06816cf2293

            SHA512

            d457d3275a4f0ee66a984b203e9fa5a1403e8f9ecbfd5e9cde11bab1e486fc0cb554cd05c6c892bf9ae59b7aada67eafca6a6deb39dd2051310fe757f28949e5

          • C:\Users\Admin\AppData\Local\Temp\Cab86CC.tmp

            Filesize

            65KB

            MD5

            ac05d27423a85adc1622c714f2cb6184

            SHA1

            b0fe2b1abddb97837ea0195be70ab2ff14d43198

            SHA256

            c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

            SHA512

            6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

          • C:\Users\Admin\AppData\Local\Temp\Tar9CEC.tmp

            Filesize

            171KB

            MD5

            9c0c641c06238516f27941aa1166d427

            SHA1

            64cd549fb8cf014fcd9312aa7a5b023847b6c977

            SHA256

            4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

            SHA512

            936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

          • \Users\Admin\AppData\Local\0104da44-6fb6-4f48-bacf-8fe9cd8d70f8\build2.exe

            Filesize

            358KB

            MD5

            c4070da9f9b0581171af16e681ccdff8

            SHA1

            3fb4182921fdc3acd7873ebe113ac5522585312a

            SHA256

            26063c78e5418610471a9f3a00a155d7d1e5b29856e1979ba3bdc42681a871d0

            SHA512

            c7569cea7f1a841e7cac9cd41287dba3bcacf2cf9dee7bece88800848a7ad5dc4cd2bdc896c7389f0f1144079bbe168048b3f722bcd76fa5d6e14f3081bb6427

          • memory/764-176-0x0000000000870000-0x0000000000970000-memory.dmp

            Filesize

            1024KB

          • memory/764-178-0x0000000000220000-0x0000000000224000-memory.dmp

            Filesize

            16KB

          • memory/1012-301-0x0000000000990000-0x0000000000A90000-memory.dmp

            Filesize

            1024KB

          • memory/1132-272-0x0000000000980000-0x0000000000A80000-memory.dmp

            Filesize

            1024KB

          • memory/1536-76-0x0000000000260000-0x00000000002AB000-memory.dmp

            Filesize

            300KB

          • memory/1536-75-0x00000000005A0000-0x00000000006A0000-memory.dmp

            Filesize

            1024KB

          • memory/1748-72-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/1748-79-0x0000000000400000-0x000000000065E000-memory.dmp

            Filesize

            2.4MB

          • memory/1748-80-0x0000000000400000-0x000000000065E000-memory.dmp

            Filesize

            2.4MB

          • memory/1748-228-0x0000000000400000-0x000000000065E000-memory.dmp

            Filesize

            2.4MB

          • memory/1748-74-0x0000000000400000-0x000000000065E000-memory.dmp

            Filesize

            2.4MB

          • memory/1804-57-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1804-92-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1804-55-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1804-58-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1804-51-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1804-50-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1804-37-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1804-36-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/1804-81-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2192-0-0x0000000000310000-0x00000000003A2000-memory.dmp

            Filesize

            584KB

          • memory/2192-7-0x0000000000310000-0x00000000003A2000-memory.dmp

            Filesize

            584KB

          • memory/2192-3-0x0000000001F20000-0x000000000203B000-memory.dmp

            Filesize

            1.1MB

          • memory/2192-1-0x0000000000310000-0x00000000003A2000-memory.dmp

            Filesize

            584KB

          • memory/2196-9-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2196-27-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2196-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/2196-5-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2196-28-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2196-8-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2356-179-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB

          • memory/2356-182-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB

          • memory/2356-184-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB

          • memory/2556-326-0x0000000000C50000-0x0000000000D50000-memory.dmp

            Filesize

            1024KB

          • memory/2580-30-0x00000000002E0000-0x0000000000372000-memory.dmp

            Filesize

            584KB

          • memory/2580-31-0x00000000002E0000-0x0000000000372000-memory.dmp

            Filesize

            584KB

          • memory/2716-239-0x0000000000230000-0x0000000000330000-memory.dmp

            Filesize

            1024KB