Analysis

  • max time kernel
    91s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/02/2023, 10:35

General

  • Target

    37288bf63f4f3e5a4a7473c1b6901af773e471b1220c1ed90dd1444305b16e6c.exe

  • Size

    734KB

  • MD5

    87fdb817f23819d66aa76611694525cf

  • SHA1

    4b4d231ba899be8a4973a96fe86cd34bd79dd05f

  • SHA256

    37288bf63f4f3e5a4a7473c1b6901af773e471b1220c1ed90dd1444305b16e6c

  • SHA512

    0b24bc7c2883bddb0e0049ee40221a8cbcf268b61d554de9e18b3f161b73c5d4133354e39bcb1dcb251c462b1ca2efc30d7f2a5e0801d80d9f638843afa39ea6

  • SSDEEP

    12288:yWgrbPVJ5U7ClZ/vv1uSgD3dQX+aH0+PckWY3cZ8uhH/HQdS2oDP2frutBVxuukp:yHJOWlxYSUQXZHrEkxsB/iSND2kzxujp

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .erqw

  • offline_id

    xVB7l5LcUtDGyghMgGsTvebrKc0RGgDXlN1BoKt1

  • payload_url

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

    http://drampik.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-8pCGyFnOj6 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: 0639JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

2.3

Botnet

19

C2

https://t.me/mantarlars

https://steamcommunity.com/profiles/76561199474840123

Attributes
  • profile_id

    19

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.

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Checks computer location settings 2 TTPs 3 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 2 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.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\37288bf63f4f3e5a4a7473c1b6901af773e471b1220c1ed90dd1444305b16e6c.exe
    "C:\Users\Admin\AppData\Local\Temp\37288bf63f4f3e5a4a7473c1b6901af773e471b1220c1ed90dd1444305b16e6c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2420
    • C:\Users\Admin\AppData\Local\Temp\37288bf63f4f3e5a4a7473c1b6901af773e471b1220c1ed90dd1444305b16e6c.exe
      "C:\Users\Admin\AppData\Local\Temp\37288bf63f4f3e5a4a7473c1b6901af773e471b1220c1ed90dd1444305b16e6c.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4312
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\90a70e14-fc84-4773-9874-d5947c119e74" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4956
      • C:\Users\Admin\AppData\Local\Temp\37288bf63f4f3e5a4a7473c1b6901af773e471b1220c1ed90dd1444305b16e6c.exe
        "C:\Users\Admin\AppData\Local\Temp\37288bf63f4f3e5a4a7473c1b6901af773e471b1220c1ed90dd1444305b16e6c.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1680
        • C:\Users\Admin\AppData\Local\Temp\37288bf63f4f3e5a4a7473c1b6901af773e471b1220c1ed90dd1444305b16e6c.exe
          "C:\Users\Admin\AppData\Local\Temp\37288bf63f4f3e5a4a7473c1b6901af773e471b1220c1ed90dd1444305b16e6c.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4812
          • C:\Users\Admin\AppData\Local\a593b5d0-54a6-4871-962a-c6f0034f4f13\build2.exe
            "C:\Users\Admin\AppData\Local\a593b5d0-54a6-4871-962a-c6f0034f4f13\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1400
            • C:\Users\Admin\AppData\Local\a593b5d0-54a6-4871-962a-c6f0034f4f13\build2.exe
              "C:\Users\Admin\AppData\Local\a593b5d0-54a6-4871-962a-c6f0034f4f13\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:3552
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\a593b5d0-54a6-4871-962a-c6f0034f4f13\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:3200
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:3544
          • C:\Users\Admin\AppData\Local\a593b5d0-54a6-4871-962a-c6f0034f4f13\build3.exe
            "C:\Users\Admin\AppData\Local\a593b5d0-54a6-4871-962a-c6f0034f4f13\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4564
            • 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:2632
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:3500
    • 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"
      2⤵
      • Creates scheduled task(s)
      PID:1216

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\Local\90a70e14-fc84-4773-9874-d5947c119e74\37288bf63f4f3e5a4a7473c1b6901af773e471b1220c1ed90dd1444305b16e6c.exe

          Filesize

          734KB

          MD5

          87fdb817f23819d66aa76611694525cf

          SHA1

          4b4d231ba899be8a4973a96fe86cd34bd79dd05f

          SHA256

          37288bf63f4f3e5a4a7473c1b6901af773e471b1220c1ed90dd1444305b16e6c

          SHA512

          0b24bc7c2883bddb0e0049ee40221a8cbcf268b61d554de9e18b3f161b73c5d4133354e39bcb1dcb251c462b1ca2efc30d7f2a5e0801d80d9f638843afa39ea6

        • C:\Users\Admin\AppData\Local\a593b5d0-54a6-4871-962a-c6f0034f4f13\build2.exe

          Filesize

          299KB

          MD5

          cacd37281c5470cfc13e6db90942d371

          SHA1

          af9e1477a51858376bd113f8247b4f6ff1b94445

          SHA256

          fe8dd23da7d898858d6a280cd58d4ca332f958a4f9562bf8f364dc4340f9c34c

          SHA512

          cfe21519f4c55583c3c68592812dbfa1170279de5e20b3da6d49f66957e373288650bd8c1a6afcd6d70255356674579b40c1b75a7c154fcc705cc89056ff8d67

        • C:\Users\Admin\AppData\Local\a593b5d0-54a6-4871-962a-c6f0034f4f13\build2.exe

          Filesize

          299KB

          MD5

          cacd37281c5470cfc13e6db90942d371

          SHA1

          af9e1477a51858376bd113f8247b4f6ff1b94445

          SHA256

          fe8dd23da7d898858d6a280cd58d4ca332f958a4f9562bf8f364dc4340f9c34c

          SHA512

          cfe21519f4c55583c3c68592812dbfa1170279de5e20b3da6d49f66957e373288650bd8c1a6afcd6d70255356674579b40c1b75a7c154fcc705cc89056ff8d67

        • C:\Users\Admin\AppData\Local\a593b5d0-54a6-4871-962a-c6f0034f4f13\build2.exe

          Filesize

          299KB

          MD5

          cacd37281c5470cfc13e6db90942d371

          SHA1

          af9e1477a51858376bd113f8247b4f6ff1b94445

          SHA256

          fe8dd23da7d898858d6a280cd58d4ca332f958a4f9562bf8f364dc4340f9c34c

          SHA512

          cfe21519f4c55583c3c68592812dbfa1170279de5e20b3da6d49f66957e373288650bd8c1a6afcd6d70255356674579b40c1b75a7c154fcc705cc89056ff8d67

        • C:\Users\Admin\AppData\Local\a593b5d0-54a6-4871-962a-c6f0034f4f13\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\a593b5d0-54a6-4871-962a-c6f0034f4f13\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • memory/1400-161-0x0000000002E9D000-0x0000000002ED1000-memory.dmp

          Filesize

          208KB

        • memory/1400-162-0x0000000004820000-0x000000000487D000-memory.dmp

          Filesize

          372KB

        • memory/1680-146-0x0000000002D99000-0x0000000002E2B000-memory.dmp

          Filesize

          584KB

        • memory/2420-135-0x0000000004962000-0x00000000049F4000-memory.dmp

          Filesize

          584KB

        • memory/2420-137-0x0000000004AA0000-0x0000000004BBB000-memory.dmp

          Filesize

          1.1MB

        • memory/3552-160-0x0000000000400000-0x0000000000471000-memory.dmp

          Filesize

          452KB

        • memory/3552-163-0x0000000000400000-0x0000000000471000-memory.dmp

          Filesize

          452KB

        • memory/3552-157-0x0000000000400000-0x0000000000471000-memory.dmp

          Filesize

          452KB

        • memory/3552-159-0x0000000000400000-0x0000000000471000-memory.dmp

          Filesize

          452KB

        • memory/3552-187-0x0000000000400000-0x0000000000471000-memory.dmp

          Filesize

          452KB

        • memory/3552-164-0x00000000509A0000-0x0000000050A32000-memory.dmp

          Filesize

          584KB

        • memory/4312-142-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4312-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4312-136-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4312-134-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4312-133-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4812-145-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4812-147-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4812-168-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4812-148-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB