Analysis

  • max time kernel
    76s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/09/2022, 08:05

General

  • Target

    d7e4e85c594cedf2a6b01ce2c8d0e0b8dedbbada8983b9958886b9f63a0f5a51.exe

  • Size

    671KB

  • MD5

    73596303089eb35279104681812245e1

  • SHA1

    a477a07b3cbfc16df51c6b54d32065443158ca5e

  • SHA256

    d7e4e85c594cedf2a6b01ce2c8d0e0b8dedbbada8983b9958886b9f63a0f5a51

  • SHA512

    473c98c815d47ec4340d924ee9eabefeb1192aa22e20d8e231f5b3dadeb159369f47d651394af3d520b87cc0ae19061f95cdd5339903dfa5c9d29373b54df7a3

  • SSDEEP

    12288:s9Xczwin9OQfBrczgJy5Vc8BeSKgHh/mcQdWu+ZcjS:s9XczwCftFJy5pKyh/QdWu+Zcj

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .oflg

  • offline_id

    xkNzhkB1wvgoDI7Uo0HPNLY3qCuwoFpP7nlhlut1

  • payload_url

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

    http://winnlinne.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-EWKSsSJiVn 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: 0566Jhyjd

rsa_pubkey.plain

Extracted

Family

vidar

Version

54.6

Botnet

517

C2

https://t.me/huobiinside

https://mas.to/@kyriazhs1975

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.

  • 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.

  • Modifies file permissions 1 TTPs 1 IoCs
  • 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.

  • 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
  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d7e4e85c594cedf2a6b01ce2c8d0e0b8dedbbada8983b9958886b9f63a0f5a51.exe
    "C:\Users\Admin\AppData\Local\Temp\d7e4e85c594cedf2a6b01ce2c8d0e0b8dedbbada8983b9958886b9f63a0f5a51.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4800
    • C:\Users\Admin\AppData\Local\Temp\d7e4e85c594cedf2a6b01ce2c8d0e0b8dedbbada8983b9958886b9f63a0f5a51.exe
      "C:\Users\Admin\AppData\Local\Temp\d7e4e85c594cedf2a6b01ce2c8d0e0b8dedbbada8983b9958886b9f63a0f5a51.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4236
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\104b366f-19a2-463b-9b6b-4f1e4f1795e9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4488
      • C:\Users\Admin\AppData\Local\Temp\d7e4e85c594cedf2a6b01ce2c8d0e0b8dedbbada8983b9958886b9f63a0f5a51.exe
        "C:\Users\Admin\AppData\Local\Temp\d7e4e85c594cedf2a6b01ce2c8d0e0b8dedbbada8983b9958886b9f63a0f5a51.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3304
        • C:\Users\Admin\AppData\Local\Temp\d7e4e85c594cedf2a6b01ce2c8d0e0b8dedbbada8983b9958886b9f63a0f5a51.exe
          "C:\Users\Admin\AppData\Local\Temp\d7e4e85c594cedf2a6b01ce2c8d0e0b8dedbbada8983b9958886b9f63a0f5a51.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3716
          • C:\Users\Admin\AppData\Local\c22f03ab-b7dc-4185-b4df-6d105e3781d9\build2.exe
            "C:\Users\Admin\AppData\Local\c22f03ab-b7dc-4185-b4df-6d105e3781d9\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:5088
            • C:\Users\Admin\AppData\Local\c22f03ab-b7dc-4185-b4df-6d105e3781d9\build2.exe
              "C:\Users\Admin\AppData\Local\c22f03ab-b7dc-4185-b4df-6d105e3781d9\build2.exe"
              6⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Checks processor information in registry
              PID:1780
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" C/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\c22f03ab-b7dc-4185-b4df-6d105e3781d9\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:1392
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1456
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:376
          • C:\Users\Admin\AppData\Local\c22f03ab-b7dc-4185-b4df-6d105e3781d9\build3.exe
            "C:\Users\Admin\AppData\Local\c22f03ab-b7dc-4185-b4df-6d105e3781d9\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3172
            • 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:2780
  • 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:5072
    • 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:2776

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    2KB

    MD5

    3229b6929fc9caec79e3e5ad740250c6

    SHA1

    d677cb89c767b4c4a444fedfa53dd6c8aa1d7d6e

    SHA256

    ece826b5b4484d173ea804773ca9a13c7248d2f6f3c8a7efeea2a9e3691d7628

    SHA512

    79b5ab3c41f03f913c0c947c6b6c66f396af97f7f69b3df72622beb9fddf8c6cc1a4f830d3edbd91ec570ce59531f09db54e51a2694a8b330ded69fd932036d1

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

    Filesize

    1KB

    MD5

    edcd4c783b2b2c906602519bd8f697f4

    SHA1

    fc56fded4065d6960c6507cac4264dfd2b038004

    SHA256

    367e0ac4e24f1d1530de05a6abf81d6b572c0546b5aa134c246fa1514582fd90

    SHA512

    cb23a82c06211121e39ed0dbec5928b1a85aca7c25f2c060d609350e3a94bf82e9159a2a4d5e67295fc29bac22c95d525ea2461a0000d24c6c4cb630520f68d0

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

    Filesize

    488B

    MD5

    abc44f2fb8c7dd127b52d4457693cab2

    SHA1

    a63b2bbdb230089e13c5b97e842e9496811172cb

    SHA256

    841b483b3daff45524ba2b620d582b48033b7e7ccf6c68b269d8feae57214417

    SHA512

    3b309f4630fd7bf5625dfb9535fea7513f31f56179670919f28de64f810a9e93ab6dcb6c591d93f5aa411555397e86d53ec8a23bc02f24e4f6ac442a1763491a

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

    Filesize

    482B

    MD5

    aa7691c09d78936520c8d9ce6bfabaaf

    SHA1

    9a4a121af747bb9e84687196be90f9c9e74d7551

    SHA256

    2838dda8484ebed008fb231b7536259084e3af4c2e74fa52bc454bddb3face13

    SHA512

    b1b752f05f99a4a9b38d7665957922c50d544b7f16e1265f0d45026960b30f4272f6bed13af39b25114b740c5dce3b1bb835b461ecec0d7ece32fa244ecac669

  • C:\Users\Admin\AppData\Local\104b366f-19a2-463b-9b6b-4f1e4f1795e9\d7e4e85c594cedf2a6b01ce2c8d0e0b8dedbbada8983b9958886b9f63a0f5a51.exe

    Filesize

    671KB

    MD5

    73596303089eb35279104681812245e1

    SHA1

    a477a07b3cbfc16df51c6b54d32065443158ca5e

    SHA256

    d7e4e85c594cedf2a6b01ce2c8d0e0b8dedbbada8983b9958886b9f63a0f5a51

    SHA512

    473c98c815d47ec4340d924ee9eabefeb1192aa22e20d8e231f5b3dadeb159369f47d651394af3d520b87cc0ae19061f95cdd5339903dfa5c9d29373b54df7a3

  • C:\Users\Admin\AppData\Local\c22f03ab-b7dc-4185-b4df-6d105e3781d9\build2.exe

    Filesize

    246KB

    MD5

    4e08ecaa075b90f30327bf200d23130b

    SHA1

    f7b67a7abbe3815bd758933f7c4712bd4d4ec4b2

    SHA256

    6c11af0bbd346329224255d38a07fb9db5828881d3520ab4623c7a5fc09ecd47

    SHA512

    e7deeafe000b034cd4d71776cd1285e33d295a830f3459506dd7332e8c1c61b43ec2fdc406c22ba5262aa62a795421492f7e54602bfe08102b8b2a000d150bb7

  • C:\Users\Admin\AppData\Local\c22f03ab-b7dc-4185-b4df-6d105e3781d9\build2.exe

    Filesize

    246KB

    MD5

    4e08ecaa075b90f30327bf200d23130b

    SHA1

    f7b67a7abbe3815bd758933f7c4712bd4d4ec4b2

    SHA256

    6c11af0bbd346329224255d38a07fb9db5828881d3520ab4623c7a5fc09ecd47

    SHA512

    e7deeafe000b034cd4d71776cd1285e33d295a830f3459506dd7332e8c1c61b43ec2fdc406c22ba5262aa62a795421492f7e54602bfe08102b8b2a000d150bb7

  • C:\Users\Admin\AppData\Local\c22f03ab-b7dc-4185-b4df-6d105e3781d9\build2.exe

    Filesize

    246KB

    MD5

    4e08ecaa075b90f30327bf200d23130b

    SHA1

    f7b67a7abbe3815bd758933f7c4712bd4d4ec4b2

    SHA256

    6c11af0bbd346329224255d38a07fb9db5828881d3520ab4623c7a5fc09ecd47

    SHA512

    e7deeafe000b034cd4d71776cd1285e33d295a830f3459506dd7332e8c1c61b43ec2fdc406c22ba5262aa62a795421492f7e54602bfe08102b8b2a000d150bb7

  • C:\Users\Admin\AppData\Local\c22f03ab-b7dc-4185-b4df-6d105e3781d9\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\c22f03ab-b7dc-4185-b4df-6d105e3781d9\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/1780-161-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/1780-166-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/1780-158-0x0000000000400000-0x000000000045B000-memory.dmp

    Filesize

    364KB

  • memory/3304-146-0x0000000002244000-0x00000000022D5000-memory.dmp

    Filesize

    580KB

  • memory/3716-145-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3716-169-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3716-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3716-148-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4236-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4236-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4236-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4236-134-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4236-133-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4800-136-0x0000000002430000-0x000000000254B000-memory.dmp

    Filesize

    1.1MB

  • memory/4800-135-0x000000000239A000-0x000000000242B000-memory.dmp

    Filesize

    580KB

  • memory/5088-160-0x00000000021A0000-0x00000000021E7000-memory.dmp

    Filesize

    284KB