Analysis

  • max time kernel
    299s
  • max time network
    156s
  • 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

    ad491e18f0871e13524e696647c31d4784b0d1286955aeb4ee54a378042ab3a2.exe

  • Size

    794KB

  • MD5

    b39217e76b21bf17052cd2abd00aef34

  • SHA1

    31cf90601333cc6b46bf0a6b4cdd62cbdabf9067

  • SHA256

    ad491e18f0871e13524e696647c31d4784b0d1286955aeb4ee54a378042ab3a2

  • SHA512

    bfc5d6b0ca0f841e8900bae346ab0f8e101f1bd5422c56704de70505e90c8f228d2a8ea5eff982a0fb55f4bd315cf71cffae021137a16f7446ad2bbed98e73d8

  • SSDEEP

    12288:pRaF0bZkvLCji7MzHKLub30T+QlDKxhcQQHipHXBxvy7r:pRaF2Z3ji72HNbEaQxicLHAlEr

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 6 IoCs
  • Detected Djvu ransomware 14 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 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ad491e18f0871e13524e696647c31d4784b0d1286955aeb4ee54a378042ab3a2.exe
    "C:\Users\Admin\AppData\Local\Temp\ad491e18f0871e13524e696647c31d4784b0d1286955aeb4ee54a378042ab3a2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Users\Admin\AppData\Local\Temp\ad491e18f0871e13524e696647c31d4784b0d1286955aeb4ee54a378042ab3a2.exe
      "C:\Users\Admin\AppData\Local\Temp\ad491e18f0871e13524e696647c31d4784b0d1286955aeb4ee54a378042ab3a2.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2920
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\0f7413d5-dbf8-480f-8a81-253200801500" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2828
      • C:\Users\Admin\AppData\Local\Temp\ad491e18f0871e13524e696647c31d4784b0d1286955aeb4ee54a378042ab3a2.exe
        "C:\Users\Admin\AppData\Local\Temp\ad491e18f0871e13524e696647c31d4784b0d1286955aeb4ee54a378042ab3a2.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1072
        • C:\Users\Admin\AppData\Local\Temp\ad491e18f0871e13524e696647c31d4784b0d1286955aeb4ee54a378042ab3a2.exe
          "C:\Users\Admin\AppData\Local\Temp\ad491e18f0871e13524e696647c31d4784b0d1286955aeb4ee54a378042ab3a2.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2792
          • C:\Users\Admin\AppData\Local\ac306b7d-d4eb-4ddf-b1d1-0fa1225f04f0\build2.exe
            "C:\Users\Admin\AppData\Local\ac306b7d-d4eb-4ddf-b1d1-0fa1225f04f0\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2880
            • C:\Users\Admin\AppData\Local\ac306b7d-d4eb-4ddf-b1d1-0fa1225f04f0\build2.exe
              "C:\Users\Admin\AppData\Local\ac306b7d-d4eb-4ddf-b1d1-0fa1225f04f0\build2.exe"
              6⤵
              • Executes dropped EXE
              • Modifies system certificate store
              • Suspicious use of WriteProcessMemory
              PID:2612
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2612 -s 1444
                7⤵
                • Loads dropped DLL
                • Program crash
                PID:3068
          • C:\Users\Admin\AppData\Local\ac306b7d-d4eb-4ddf-b1d1-0fa1225f04f0\build3.exe
            "C:\Users\Admin\AppData\Local\ac306b7d-d4eb-4ddf-b1d1-0fa1225f04f0\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1632
            • C:\Users\Admin\AppData\Local\ac306b7d-d4eb-4ddf-b1d1-0fa1225f04f0\build3.exe
              "C:\Users\Admin\AppData\Local\ac306b7d-d4eb-4ddf-b1d1-0fa1225f04f0\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:2144
              • 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"
                7⤵
                • Creates scheduled task(s)
                PID:816
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {5B92BC40-6BB0-4D82-B9B3-2DE9574162AC} S-1-5-21-3308111660-3636268597-2291490419-1000:JUBFGPHD\Admin:Interactive:[1]
    1⤵
      PID:2516
      • 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:3016
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:2640
          • 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:2448
      • 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:540
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:1560
      • 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:1548
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:1784
      • 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:2424
        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
          3⤵
          • Executes dropped EXE
          PID:1596

    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

            71ad60bb070402bdd701c9c2a5cdcfa5

            SHA1

            68216fbca63af8923a845365f36c181db5ed60b7

            SHA256

            06cbdd3453f54be2dd0e40232fc84a30807d1b9162647cc3ebf608c2a8a7d831

            SHA512

            4e6daa3f65b2a3b55a075741bceb0eb5bf64a6f0a7e1aa3140ed2d8a93443404c7599615780b757c30ad9f480eeae4e05a6e60b761db6c7d3434e871c0b55d11

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

            Filesize

            344B

            MD5

            0d137a38fdd6dde5bec62fa5889525f7

            SHA1

            bd0029e7dd41f3c938fb93ed18ce511a3b1a64ac

            SHA256

            c1017f73bea6d1312088cbfab8493e0147470f0f2a1b44ca2ab12eab8a6908e1

            SHA512

            b5d79b62abfeb50f086413b40db4659b7d2c25e20fbe9eea58d8be4109d6c92ef10928dbea7005afa9f6275c5331d4a8fa7349d238c0b801e007ac1408f81c4c

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

            Filesize

            344B

            MD5

            6d50df247a1329fd16d3cdee814ad86a

            SHA1

            52436ad5f62ba32e4245b0981be5441410b1d390

            SHA256

            9a4e395286911c33a19bb6c4c82c147e45f44845186856ad4bf7331d43ecbbdb

            SHA512

            69e6808f90c0c2e92d7cabd8a5ec459c6c35e8aaa6ea63a0e6762d213d6edd1c78bf58866cf814f0898a04d963a59c13ece05fca9fea028ba63643360370c8a0

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

            Filesize

            392B

            MD5

            9d58eaa6e3e7a9e97e94577582ecd65d

            SHA1

            3fff92118c1071d2a99be25e35260f9a13a97bb3

            SHA256

            0209941518fd4475caa3e834720805f6df75fa08e4a828f49ca218b56a672169

            SHA512

            060d9c86293d71850352dc6920f36310d8e1023b8e0a550d6c96deebda9f5894724155aad6db6235d675b719f9c4b1b3723ebdb2095fb2e977ffdc72ecf76d2a

          • C:\Users\Admin\AppData\Local\0f7413d5-dbf8-480f-8a81-253200801500\ad491e18f0871e13524e696647c31d4784b0d1286955aeb4ee54a378042ab3a2.exe

            Filesize

            794KB

            MD5

            b39217e76b21bf17052cd2abd00aef34

            SHA1

            31cf90601333cc6b46bf0a6b4cdd62cbdabf9067

            SHA256

            ad491e18f0871e13524e696647c31d4784b0d1286955aeb4ee54a378042ab3a2

            SHA512

            bfc5d6b0ca0f841e8900bae346ab0f8e101f1bd5422c56704de70505e90c8f228d2a8ea5eff982a0fb55f4bd315cf71cffae021137a16f7446ad2bbed98e73d8

          • C:\Users\Admin\AppData\Local\Temp\Cab61DE.tmp

            Filesize

            65KB

            MD5

            ac05d27423a85adc1622c714f2cb6184

            SHA1

            b0fe2b1abddb97837ea0195be70ab2ff14d43198

            SHA256

            c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

            SHA512

            6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

          • C:\Users\Admin\AppData\Local\Temp\Tar7917.tmp

            Filesize

            171KB

            MD5

            9c0c641c06238516f27941aa1166d427

            SHA1

            64cd549fb8cf014fcd9312aa7a5b023847b6c977

            SHA256

            4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

            SHA512

            936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

          • \Users\Admin\AppData\Local\ac306b7d-d4eb-4ddf-b1d1-0fa1225f04f0\build2.exe

            Filesize

            358KB

            MD5

            c4070da9f9b0581171af16e681ccdff8

            SHA1

            3fb4182921fdc3acd7873ebe113ac5522585312a

            SHA256

            26063c78e5418610471a9f3a00a155d7d1e5b29856e1979ba3bdc42681a871d0

            SHA512

            c7569cea7f1a841e7cac9cd41287dba3bcacf2cf9dee7bece88800848a7ad5dc4cd2bdc896c7389f0f1144079bbe168048b3f722bcd76fa5d6e14f3081bb6427

          • \Users\Admin\AppData\Local\ac306b7d-d4eb-4ddf-b1d1-0fa1225f04f0\build3.exe

            Filesize

            299KB

            MD5

            41b883a061c95e9b9cb17d4ca50de770

            SHA1

            1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

            SHA256

            fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

            SHA512

            cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

          • memory/540-270-0x0000000000290000-0x0000000000390000-memory.dmp

            Filesize

            1024KB

          • memory/1072-27-0x0000000000220000-0x00000000002B2000-memory.dmp

            Filesize

            584KB

          • memory/1072-29-0x0000000000220000-0x00000000002B2000-memory.dmp

            Filesize

            584KB

          • memory/1548-302-0x0000000000312000-0x0000000000322000-memory.dmp

            Filesize

            64KB

          • memory/1560-276-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB

          • memory/1632-176-0x00000000001B0000-0x00000000001B4000-memory.dmp

            Filesize

            16KB

          • memory/1632-174-0x00000000002F0000-0x00000000003F0000-memory.dmp

            Filesize

            1024KB

          • memory/2044-0-0x00000000002A0000-0x0000000000332000-memory.dmp

            Filesize

            584KB

          • memory/2044-1-0x00000000002A0000-0x0000000000332000-memory.dmp

            Filesize

            584KB

          • memory/2044-2-0x0000000001D60000-0x0000000001E7B000-memory.dmp

            Filesize

            1.1MB

          • memory/2144-202-0x0000000000410000-0x0000000000591000-memory.dmp

            Filesize

            1.5MB

          • memory/2144-183-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB

          • memory/2144-181-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB

          • memory/2144-178-0x0000000000400000-0x0000000000406000-memory.dmp

            Filesize

            24KB

          • memory/2424-330-0x00000000008B0000-0x00000000009B0000-memory.dmp

            Filesize

            1024KB

          • memory/2612-74-0x0000000000400000-0x000000000065E000-memory.dmp

            Filesize

            2.4MB

          • memory/2612-222-0x0000000000400000-0x000000000065E000-memory.dmp

            Filesize

            2.4MB

          • memory/2612-70-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/2612-77-0x0000000000400000-0x000000000065E000-memory.dmp

            Filesize

            2.4MB

          • memory/2612-79-0x0000000000400000-0x000000000065E000-memory.dmp

            Filesize

            2.4MB

          • memory/2612-228-0x0000000000400000-0x000000000065E000-memory.dmp

            Filesize

            2.4MB

          • memory/2792-34-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2792-53-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2792-115-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2792-35-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2792-48-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2792-49-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2792-78-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2792-56-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2792-55-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2880-71-0x0000000000240000-0x0000000000340000-memory.dmp

            Filesize

            1024KB

          • memory/2880-73-0x00000000003B0000-0x00000000003FB000-memory.dmp

            Filesize

            300KB

          • memory/2920-8-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2920-26-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2920-5-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2920-7-0x0000000000400000-0x0000000000537000-memory.dmp

            Filesize

            1.2MB

          • memory/2920-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/3016-243-0x0000000000970000-0x0000000000A70000-memory.dmp

            Filesize

            1024KB