Analysis

  • max time kernel
    185s
  • max time network
    185s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    02-05-2022 08:44

General

  • Target

    7b00e0bad4d197d7983ebd5a857cd3e9e213cc8dec64b1ae102220c580374eb0.exe

  • Size

    757KB

  • MD5

    402d6a3bcf043fa22d0d6adb9a36693f

  • SHA1

    b44f4cf9760338329c754a73b1cab4377da69003

  • SHA256

    7b00e0bad4d197d7983ebd5a857cd3e9e213cc8dec64b1ae102220c580374eb0

  • SHA512

    3f2c110688c83fa93acd3ce90d940a6d3c3110485c2b019c35cc11be2ca391e35b76636a5c29880dc4db94714ad926a91e743043a1ce3127c4b73832b343c99e

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/test1/get.php

Attributes
  • extension

    .ttii

  • offline_id

    w6IKbZ9nGWp1wM5W7MK8obmynSc0Hx2FVdvsSzt1

  • 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-PRDjRCeB3y 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: manager@time2mail.ch Reserve e-mail address to contact us: supportsys@airmail.cc Your personal ID: 0465JIjdm

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

  • suricata: ET MALWARE Win32/Filecoder.STOP Variant Public Key Download

    suricata: ET MALWARE Win32/Filecoder.STOP Variant Public Key Download

  • suricata: ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key

    suricata: ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key

  • suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload

    suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload

  • 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 1 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 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.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7b00e0bad4d197d7983ebd5a857cd3e9e213cc8dec64b1ae102220c580374eb0.exe
    "C:\Users\Admin\AppData\Local\Temp\7b00e0bad4d197d7983ebd5a857cd3e9e213cc8dec64b1ae102220c580374eb0.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4092
    • C:\Users\Admin\AppData\Local\Temp\7b00e0bad4d197d7983ebd5a857cd3e9e213cc8dec64b1ae102220c580374eb0.exe
      "C:\Users\Admin\AppData\Local\Temp\7b00e0bad4d197d7983ebd5a857cd3e9e213cc8dec64b1ae102220c580374eb0.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3172
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\df36cb02-f2c8-4580-b88d-de02c522b293" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3756
      • C:\Users\Admin\AppData\Local\Temp\7b00e0bad4d197d7983ebd5a857cd3e9e213cc8dec64b1ae102220c580374eb0.exe
        "C:\Users\Admin\AppData\Local\Temp\7b00e0bad4d197d7983ebd5a857cd3e9e213cc8dec64b1ae102220c580374eb0.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2368
        • C:\Users\Admin\AppData\Local\Temp\7b00e0bad4d197d7983ebd5a857cd3e9e213cc8dec64b1ae102220c580374eb0.exe
          "C:\Users\Admin\AppData\Local\Temp\7b00e0bad4d197d7983ebd5a857cd3e9e213cc8dec64b1ae102220c580374eb0.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2516
          • C:\Users\Admin\AppData\Local\ac24c8c6-8677-462d-b407-29a35753cc59\build2.exe
            "C:\Users\Admin\AppData\Local\ac24c8c6-8677-462d-b407-29a35753cc59\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3628
            • C:\Users\Admin\AppData\Local\ac24c8c6-8677-462d-b407-29a35753cc59\build2.exe
              "C:\Users\Admin\AppData\Local\ac24c8c6-8677-462d-b407-29a35753cc59\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious behavior: EnumeratesProcesses
              PID:608

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\nss3.dll
    Filesize

    1.2MB

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • C:\Users\Admin\AppData\Local\ac24c8c6-8677-462d-b407-29a35753cc59\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • C:\Users\Admin\AppData\Local\ac24c8c6-8677-462d-b407-29a35753cc59\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • C:\Users\Admin\AppData\Local\ac24c8c6-8677-462d-b407-29a35753cc59\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • C:\Users\Admin\AppData\Local\df36cb02-f2c8-4580-b88d-de02c522b293\7b00e0bad4d197d7983ebd5a857cd3e9e213cc8dec64b1ae102220c580374eb0.exe
    Filesize

    757KB

    MD5

    402d6a3bcf043fa22d0d6adb9a36693f

    SHA1

    b44f4cf9760338329c754a73b1cab4377da69003

    SHA256

    7b00e0bad4d197d7983ebd5a857cd3e9e213cc8dec64b1ae102220c580374eb0

    SHA512

    3f2c110688c83fa93acd3ce90d940a6d3c3110485c2b019c35cc11be2ca391e35b76636a5c29880dc4db94714ad926a91e743043a1ce3127c4b73832b343c99e

  • memory/608-150-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/608-157-0x0000000060900000-0x0000000060992000-memory.dmp
    Filesize

    584KB

  • memory/608-149-0x0000000000000000-mapping.dmp
  • memory/608-155-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/608-156-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/608-153-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/2368-139-0x0000000000000000-mapping.dmp
  • memory/2368-143-0x00000000021A1000-0x0000000002232000-memory.dmp
    Filesize

    580KB

  • memory/2516-140-0x0000000000000000-mapping.dmp
  • memory/2516-145-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2516-144-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2516-142-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/3172-136-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/3172-135-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/3172-132-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/3172-131-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/3172-130-0x0000000000000000-mapping.dmp
  • memory/3628-154-0x0000000002090000-0x00000000020D9000-memory.dmp
    Filesize

    292KB

  • memory/3628-152-0x0000000000529000-0x0000000000553000-memory.dmp
    Filesize

    168KB

  • memory/3628-146-0x0000000000000000-mapping.dmp
  • memory/3756-137-0x0000000000000000-mapping.dmp
  • memory/4092-134-0x0000000002430000-0x000000000254B000-memory.dmp
    Filesize

    1.1MB

  • memory/4092-133-0x00000000022CC000-0x000000000235D000-memory.dmp
    Filesize

    580KB