Analysis

  • max time kernel
    73s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/01/2023, 07:56

General

  • Target
    cbd5866823162fabe718f129da023984.exe
  • Size 684KB
  • Sample230125-jspblaha31
  • SHA256 69ac7dbf2ec81c66dcfe1b1e560972c8ed26ebff9706f88b8aa4ce9926f96df8
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • djvu

C2
  • http://drampik.com/test1/get.php

Attributes
  • extension

    .mzqw

  • offline_id

    ex4uvTKsM2vEkIcr3MjXi2C6v27h1mS682iUXGt1

  • 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-cud8EGMtyB 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: 0635JOsie

rsa_pubkey.plain

Extracted

Family
  • vidar

Version
  • 2.2

Botnet
  • 19

C2
  • https://t.me/litlebey

  • https://steamcommunity.com/profiles/76561199472399815

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 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
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cbd5866823162fabe718f129da023984.exe
    "C:\Users\Admin\AppData\Local\Temp\cbd5866823162fabe718f129da023984.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4608
    • C:\Users\Admin\AppData\Local\Temp\cbd5866823162fabe718f129da023984.exe
      "C:\Users\Admin\AppData\Local\Temp\cbd5866823162fabe718f129da023984.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2052
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\ee5c1de9-0729-40a8-8b9a-3ee1df1e9b15" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4832
      • C:\Users\Admin\AppData\Local\Temp\cbd5866823162fabe718f129da023984.exe
        "C:\Users\Admin\AppData\Local\Temp\cbd5866823162fabe718f129da023984.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:5028
        • C:\Users\Admin\AppData\Local\Temp\cbd5866823162fabe718f129da023984.exe
          "C:\Users\Admin\AppData\Local\Temp\cbd5866823162fabe718f129da023984.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:5020
          • C:\Users\Admin\AppData\Local\fc1223ea-4614-46f3-a928-c8ead7b7b1ea\build2.exe
            "C:\Users\Admin\AppData\Local\fc1223ea-4614-46f3-a928-c8ead7b7b1ea\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1580
            • C:\Users\Admin\AppData\Local\fc1223ea-4614-46f3-a928-c8ead7b7b1ea\build2.exe
              "C:\Users\Admin\AppData\Local\fc1223ea-4614-46f3-a928-c8ead7b7b1ea\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:4828
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\fc1223ea-4614-46f3-a928-c8ead7b7b1ea\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:3004
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:3140
          • C:\Users\Admin\AppData\Local\fc1223ea-4614-46f3-a928-c8ead7b7b1ea\build3.exe
            "C:\Users\Admin\AppData\Local\fc1223ea-4614-46f3-a928-c8ead7b7b1ea\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1076
            • 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:1172
  • 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:4748
    • 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:2912

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        mozglue.dll

        • Path C:\ProgramData\mozglue.dll
        • Size 133KB
        • SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
        • MD5 SHA1 SHA512 SSDEEP

        nss3.dll

        • Path C:\ProgramData\nss3.dll
        • Size 1.2MB
        • SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
        • MD5 SHA1 SHA512 SSDEEP

        07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
        • Size 2KB
        • SHA256 b75e739320fc1859c36dc338c1677929373f5dd5d606ef6ea61614a23eee7c95
        • MD5 SHA1 SHA512

        B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
        • Size 1KB
        • SHA256 31f3c6aa02743ff82e7fe54bcf5c3005406d9dc4858993cc4762f33f13198c37
        • MD5 SHA1 SHA512

        07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
        • Size 488B
        • SHA256 c93072d42eae7e8af66dce34246226b978dcb92afdcfac929b7bfe10d7447768
        • MD5 SHA1 SHA512

        B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
        • Size 482B
        • SHA256 01d0e05e928d580b59935604cf22fde51faab5c643853963aa0a20b5bc992366
        • MD5 SHA1 SHA512

        cbd5866823162fabe718f129da023984.exe

        • Path C:\Users\Admin\AppData\Local\ee5c1de9-0729-40a8-8b9a-3ee1df1e9b15\cbd5866823162fabe718f129da023984.exe
        • Size 684KB
        • SHA256 69ac7dbf2ec81c66dcfe1b1e560972c8ed26ebff9706f88b8aa4ce9926f96df8
        • MD5 SHA1 SHA512 SSDEEP

        build2.exe

        • Path C:\Users\Admin\AppData\Local\fc1223ea-4614-46f3-a928-c8ead7b7b1ea\build2.exe
        • Size 437KB
        • SHA256 c37e19ba7ca31d3984004ec6534551197c1e4ab710bf26f822924168f17cbe7e
        • MD5 SHA1 SHA512 SSDEEP

        build2.exe

        • Path C:\Users\Admin\AppData\Local\fc1223ea-4614-46f3-a928-c8ead7b7b1ea\build2.exe
        • Size 437KB
        • SHA256 c37e19ba7ca31d3984004ec6534551197c1e4ab710bf26f822924168f17cbe7e
        • MD5 SHA1 SHA512 SSDEEP

        build2.exe

        • Path C:\Users\Admin\AppData\Local\fc1223ea-4614-46f3-a928-c8ead7b7b1ea\build2.exe
        • Size 437KB
        • SHA256 c37e19ba7ca31d3984004ec6534551197c1e4ab710bf26f822924168f17cbe7e
        • MD5 SHA1 SHA512 SSDEEP

        build3.exe

        • Path C:\Users\Admin\AppData\Local\fc1223ea-4614-46f3-a928-c8ead7b7b1ea\build3.exe
        • Size 9KB
        • SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
        • MD5 SHA1 SHA512 SSDEEP

        build3.exe

        • Path C:\Users\Admin\AppData\Local\fc1223ea-4614-46f3-a928-c8ead7b7b1ea\build3.exe
        • Size 9KB
        • SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
        • MD5 SHA1 SHA512 SSDEEP

        mstsca.exe

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        • Size 9KB
        • SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
        • MD5 SHA1 SHA512 SSDEEP

        mstsca.exe

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        • Size 9KB
        • SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
        • MD5 SHA1 SHA512 SSDEEP

        memory/1580-163-0x000000000070D000-0x000000000073E000-memory.dmp

        memory/1580-165-0x0000000002090000-0x00000000020E6000-memory.dmp

        memory/2052-142-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/2052-135-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/2052-138-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/2052-136-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/2052-137-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/4608-133-0x0000000004B20000-0x0000000004C3B000-memory.dmp

        memory/4608-132-0x00000000049A6000-0x0000000004A37000-memory.dmp

        memory/4828-166-0x0000000000400000-0x000000000046A000-memory.dmp

        memory/4828-164-0x0000000000400000-0x000000000046A000-memory.dmp

        memory/4828-161-0x0000000000400000-0x000000000046A000-memory.dmp

        memory/4828-167-0x0000000000400000-0x000000000046A000-memory.dmp

        memory/4828-191-0x0000000000400000-0x000000000046A000-memory.dmp

        memory/4828-169-0x0000000060900000-0x0000000060992000-memory.dmp

        memory/5020-145-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/5020-168-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/5020-152-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/5020-147-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/5028-146-0x00000000048A9000-0x000000000493A000-memory.dmp