Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    30-11-2021 17:31

General

  • Target

    46e985de19a681f69251e64d08104035c489e138fda3ed2ef8f1e198ed85d85d.exe

  • Size

    707KB

  • MD5

    b383e1d0c2c72894e5019e74855b6234

  • SHA1

    e7a07453901509b2302b74e7b3a87b568b3e9169

  • SHA256

    46e985de19a681f69251e64d08104035c489e138fda3ed2ef8f1e198ed85d85d

  • SHA512

    831da79a194ae4c85a9b9fb1217aaba0836cda6d9906337fe3259f8b21f57df479d77a949c5f3e1116f8954b55e0528250b9ed708683a540748facf650ae20a4

Malware Config

Extracted

Family

djvu

C2

http://tzgl.org/lancer/get.php

Attributes
  • extension

    .yqal

  • offline_id

    K3PMMX2aWwpnYby88Dzg7tmaIW7Tv0HMWvSyr7t1

  • payload_url

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

    http://tzgl.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-rIyEiK9ekc 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: 0356gSd743d

rsa_pubkey.plain

Extracted

Family

vidar

Version

48.9

Botnet

517

C2

https://qoto.org/@mniami

https://noc.social/@menaomi

Attributes
  • profile_id

    517

Signatures

  • Detected Djvu ransomware 6 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer 4 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\46e985de19a681f69251e64d08104035c489e138fda3ed2ef8f1e198ed85d85d.exe
    "C:\Users\Admin\AppData\Local\Temp\46e985de19a681f69251e64d08104035c489e138fda3ed2ef8f1e198ed85d85d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4156
    • C:\Users\Admin\AppData\Local\Temp\46e985de19a681f69251e64d08104035c489e138fda3ed2ef8f1e198ed85d85d.exe
      "C:\Users\Admin\AppData\Local\Temp\46e985de19a681f69251e64d08104035c489e138fda3ed2ef8f1e198ed85d85d.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2120
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\3d7ba4b6-6c08-4b1a-8d4a-207689e79aa4" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4084
      • C:\Users\Admin\AppData\Local\Temp\46e985de19a681f69251e64d08104035c489e138fda3ed2ef8f1e198ed85d85d.exe
        "C:\Users\Admin\AppData\Local\Temp\46e985de19a681f69251e64d08104035c489e138fda3ed2ef8f1e198ed85d85d.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4196
        • C:\Users\Admin\AppData\Local\Temp\46e985de19a681f69251e64d08104035c489e138fda3ed2ef8f1e198ed85d85d.exe
          "C:\Users\Admin\AppData\Local\Temp\46e985de19a681f69251e64d08104035c489e138fda3ed2ef8f1e198ed85d85d.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4472
          • C:\Users\Admin\AppData\Local\d48f7dfd-1666-44dc-b1d6-c9773614b3f7\build2.exe
            "C:\Users\Admin\AppData\Local\d48f7dfd-1666-44dc-b1d6-c9773614b3f7\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3952
            • C:\Users\Admin\AppData\Local\d48f7dfd-1666-44dc-b1d6-c9773614b3f7\build2.exe
              "C:\Users\Admin\AppData\Local\d48f7dfd-1666-44dc-b1d6-c9773614b3f7\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4552
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\d48f7dfd-1666-44dc-b1d6-c9773614b3f7\build2.exe" & del C:\ProgramData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:424
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1168
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:1616

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\freebl3.dll

    MD5

    ef2834ac4ee7d6724f255beaf527e635

    SHA1

    5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

    SHA256

    a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

    SHA512

    c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

  • C:\ProgramData\mozglue.dll

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • C:\ProgramData\msvcp140.dll

    MD5

    109f0f02fd37c84bfc7508d4227d7ed5

    SHA1

    ef7420141bb15ac334d3964082361a460bfdb975

    SHA256

    334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

    SHA512

    46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

  • C:\ProgramData\nss3.dll

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • C:\ProgramData\softokn3.dll

    MD5

    a2ee53de9167bf0d6c019303b7ca84e5

    SHA1

    2a3c737fa1157e8483815e98b666408a18c0db42

    SHA256

    43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083

    SHA512

    45b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8

  • C:\ProgramData\vcruntime140.dll

    MD5

    7587bf9cb4147022cd5681b015183046

    SHA1

    f2106306a8f6f0da5afb7fc765cfa0757ad5a628

    SHA256

    c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

    SHA512

    0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

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

    MD5

    237cc7db072d97a949e15c2d8dbea891

    SHA1

    43ef7b53667e94ae04496fa6cf6efc7f9a8ba83f

    SHA256

    7f9669eedb0bdb3b6647128101ec024ac5fc2447bd4372fbc8b4389f5d255acb

    SHA512

    07c69dbcb95369ffcfdcbe402d582e7dcad1b5f2976f9156460197c891eefae41b43d2640df96d08c4ae2338a5c8d03aeaa662487d0635678d34622aede96b2b

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

    MD5

    5db4d4fdb4428e5d3c794ed0a7c25958

    SHA1

    374866bf683c5c6a3620d7dcfe29ef04221c4723

    SHA256

    19ee4604acc3747d7a43fe1703dcacf39ca80e58a5f20e8607172b8f7037e45e

    SHA512

    8ad3ce80577dfc0e4edfb40c548d6b5ba88ca22bca51d0c9fe757d9e155372fe4c212ae12e8f7ed13fd40369a0722399b41c5f0edf9eb03de57fbd9890b2989d

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

    MD5

    9dfaffd5d6fe1544dc05cc726b0ad086

    SHA1

    d45e86ec3a8fc280ffcd3098d0a8d8efe3570089

    SHA256

    1234c299cac39c6fa1d3a8ea646caeacaceee0dc59e5c24133c8b199c1c9fccd

    SHA512

    9f6c42bc79e1463d647d5e4e35920b404a1e89b1784c1fb6bed0091c088e5f391ce00c8521e41664f2cf1fbd4d826dedc9dcbbdf1873cb6a1430698acd739183

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

    MD5

    66cefbe3a36d2c212280635354bfa4f1

    SHA1

    bee3746f0dafbeb148ed506cd5176a4e481101b9

    SHA256

    476fa8c7b5fc9ec19cee5bb1cda1305c5ea710eb90819fbef68b70e6fab7ae75

    SHA512

    1478591b553ca34166e05bc0c70e8a7e81c2c9046170efd71bef3d024af49ad35801789a6c51b8edc97ee47833a5dbf9ab583f6a3afa6f5d038ddb2de9b41352

  • C:\Users\Admin\AppData\Local\3d7ba4b6-6c08-4b1a-8d4a-207689e79aa4\46e985de19a681f69251e64d08104035c489e138fda3ed2ef8f1e198ed85d85d.exe

    MD5

    b383e1d0c2c72894e5019e74855b6234

    SHA1

    e7a07453901509b2302b74e7b3a87b568b3e9169

    SHA256

    46e985de19a681f69251e64d08104035c489e138fda3ed2ef8f1e198ed85d85d

    SHA512

    831da79a194ae4c85a9b9fb1217aaba0836cda6d9906337fe3259f8b21f57df479d77a949c5f3e1116f8954b55e0528250b9ed708683a540748facf650ae20a4

  • C:\Users\Admin\AppData\Local\d48f7dfd-1666-44dc-b1d6-c9773614b3f7\build2.exe

    MD5

    37f77c6f8805407d31d2b2b63e853316

    SHA1

    2535b538d6c9337a10ac4ed80f5f7b6bceeea00a

    SHA256

    c19a32b2c1b56473245cb672da9d589227f52966b40c9b761765e85418052f35

    SHA512

    71208f96291b8d808e33202587882bbd771a5169e60ba1568051148535977475f345c3f61f1a1d4a413b4a3ed278d6167335d9ea49b7b318d6ee303ae3db4cb1

  • C:\Users\Admin\AppData\Local\d48f7dfd-1666-44dc-b1d6-c9773614b3f7\build2.exe

    MD5

    37f77c6f8805407d31d2b2b63e853316

    SHA1

    2535b538d6c9337a10ac4ed80f5f7b6bceeea00a

    SHA256

    c19a32b2c1b56473245cb672da9d589227f52966b40c9b761765e85418052f35

    SHA512

    71208f96291b8d808e33202587882bbd771a5169e60ba1568051148535977475f345c3f61f1a1d4a413b4a3ed278d6167335d9ea49b7b318d6ee303ae3db4cb1

  • C:\Users\Admin\AppData\Local\d48f7dfd-1666-44dc-b1d6-c9773614b3f7\build2.exe

    MD5

    37f77c6f8805407d31d2b2b63e853316

    SHA1

    2535b538d6c9337a10ac4ed80f5f7b6bceeea00a

    SHA256

    c19a32b2c1b56473245cb672da9d589227f52966b40c9b761765e85418052f35

    SHA512

    71208f96291b8d808e33202587882bbd771a5169e60ba1568051148535977475f345c3f61f1a1d4a413b4a3ed278d6167335d9ea49b7b318d6ee303ae3db4cb1

  • \ProgramData\mozglue.dll

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • \ProgramData\nss3.dll

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • memory/424-144-0x0000000000000000-mapping.dmp

  • memory/1168-145-0x0000000000000000-mapping.dmp

  • memory/1616-146-0x0000000000000000-mapping.dmp

  • memory/2120-122-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2120-119-0x0000000000424141-mapping.dmp

  • memory/2120-118-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3952-139-0x00000000047B0000-0x000000000482D000-memory.dmp

    Filesize

    500KB

  • memory/3952-140-0x0000000004870000-0x0000000004949000-memory.dmp

    Filesize

    868KB

  • memory/3952-133-0x0000000000000000-mapping.dmp

  • memory/4084-123-0x0000000000000000-mapping.dmp

  • memory/4156-121-0x00000000049F0000-0x0000000004B0B000-memory.dmp

    Filesize

    1.1MB

  • memory/4156-120-0x0000000004950000-0x00000000049E2000-memory.dmp

    Filesize

    584KB

  • memory/4196-125-0x0000000000000000-mapping.dmp

  • memory/4472-127-0x0000000000424141-mapping.dmp

  • memory/4472-132-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4552-141-0x0000000000400000-0x00000000004DC000-memory.dmp

    Filesize

    880KB

  • memory/4552-136-0x0000000000400000-0x00000000004DC000-memory.dmp

    Filesize

    880KB

  • memory/4552-137-0x00000000004A51CD-mapping.dmp