Analysis

  • max time kernel
    114s
  • max time network
    132s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    02-05-2022 17:51

General

  • Target

    71bcbcd088451dc993118df7d3dae80814b2747882084c28a958baa5414b59f5.exe

  • Size

    779KB

  • MD5

    ccd57d60a1f01b12b678275781bf3f48

  • SHA1

    d6f4b4223f8fb4ce50dbea5a3d0c138a498510f7

  • SHA256

    71bcbcd088451dc993118df7d3dae80814b2747882084c28a958baa5414b59f5

  • SHA512

    26b075c5db90d7850ab32c2416c5d24d31ae5e0f670d5a2c3ecb43896ff1625382392d55a0febfe4c18d521f2ca3a249b65e24986799fba4dd0f9fe3cbfc5853

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/fhsgtsspen6/get.php

Attributes
  • extension

    .mmob

  • 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: 0468JIjdm

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 10 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 W32/Agent.OGR!tr.pws Stealer

    suricata: ET MALWARE W32/Agent.OGR!tr.pws Stealer

  • 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
  • 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.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\71bcbcd088451dc993118df7d3dae80814b2747882084c28a958baa5414b59f5.exe
    "C:\Users\Admin\AppData\Local\Temp\71bcbcd088451dc993118df7d3dae80814b2747882084c28a958baa5414b59f5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1008
    • C:\Users\Admin\AppData\Local\Temp\71bcbcd088451dc993118df7d3dae80814b2747882084c28a958baa5414b59f5.exe
      "C:\Users\Admin\AppData\Local\Temp\71bcbcd088451dc993118df7d3dae80814b2747882084c28a958baa5414b59f5.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1232
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\027d5d62-3022-4b19-9d4a-1a77c11ae0b4" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1796
      • C:\Users\Admin\AppData\Local\Temp\71bcbcd088451dc993118df7d3dae80814b2747882084c28a958baa5414b59f5.exe
        "C:\Users\Admin\AppData\Local\Temp\71bcbcd088451dc993118df7d3dae80814b2747882084c28a958baa5414b59f5.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3512
        • C:\Users\Admin\AppData\Local\Temp\71bcbcd088451dc993118df7d3dae80814b2747882084c28a958baa5414b59f5.exe
          "C:\Users\Admin\AppData\Local\Temp\71bcbcd088451dc993118df7d3dae80814b2747882084c28a958baa5414b59f5.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4020
          • C:\Users\Admin\AppData\Local\a0a30553-75fb-4849-a411-46fe4bceb2f0\build2.exe
            "C:\Users\Admin\AppData\Local\a0a30553-75fb-4849-a411-46fe4bceb2f0\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2336
            • C:\Users\Admin\AppData\Local\a0a30553-75fb-4849-a411-46fe4bceb2f0\build2.exe
              "C:\Users\Admin\AppData\Local\a0a30553-75fb-4849-a411-46fe4bceb2f0\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:2200

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

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

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

    727B

    MD5

    d7f7c80fe97665d703c4060cb969e8bc

    SHA1

    39f1cdd78563e6139c4212644d3190a8359290eb

    SHA256

    34f78e2112650156ff1e9f3ab156f8a12cf68aa00e2a6f25ca41ba88e2429a40

    SHA512

    6d420aafab6cd5c273b5ae1446d1b9861dae388b2bc50b219c11efdd1f58a05c03d89fbb36b3bb3e0bde79974311c2e6997899e89f62811df54ed4a158f8c338

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

    471B

    MD5

    36d45b330d5eef29217009ce51799d72

    SHA1

    e5a0735690fc198a2ab02c1a0b2487d5014cba9b

    SHA256

    a1e5b5827ed7bbafeb8c063542478e1dcd34d46c6e20aca3f07f95f503963b9c

    SHA512

    2acec052c274574f0d748d1d35753fa2b9327dcab72b2bb40025a0cd604b887345511f0a01a4b95c4f412df4753602159ddc724a499235490246a17d38a1fa42

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

    402B

    MD5

    63bda991fb3ce805c181338e72531fee

    SHA1

    66c3ce655e77caadd17097f30a690b1d5bed8d47

    SHA256

    9ac01d6e788b7d0f4a9932daa1cdf095b172b216e0b859bedf372c2d9410f098

    SHA512

    ae8c18a75a889b2cefa2d81c306ded0d76b4a11fd94d3c0612bb42546a6751d3f7f770f09ec5ea5221599b8f6f3437d54e056a9046ed7c3a533ff5ca1412c88e

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

    396B

    MD5

    8dc4c9fd1958ad78db22c7aa2c3c0f5b

    SHA1

    d46e586b1d663d9af84d5a44a0ce4e21b1fad6e9

    SHA256

    47cb9161d1d0c245561c9e14840adbfa2703c14c53452d57a06f154007e45992

    SHA512

    40e59b56a9eb11d3f8f5d7b3c133006fb724870d830273f76f645d2522f853952a2f2fe7021571d6f485f478644edb18a73b21d02ab17c1d070cc7a673ff3aa7

  • C:\Users\Admin\AppData\Local\027d5d62-3022-4b19-9d4a-1a77c11ae0b4\71bcbcd088451dc993118df7d3dae80814b2747882084c28a958baa5414b59f5.exe
    Filesize

    779KB

    MD5

    ccd57d60a1f01b12b678275781bf3f48

    SHA1

    d6f4b4223f8fb4ce50dbea5a3d0c138a498510f7

    SHA256

    71bcbcd088451dc993118df7d3dae80814b2747882084c28a958baa5414b59f5

    SHA512

    26b075c5db90d7850ab32c2416c5d24d31ae5e0f670d5a2c3ecb43896ff1625382392d55a0febfe4c18d521f2ca3a249b65e24986799fba4dd0f9fe3cbfc5853

  • C:\Users\Admin\AppData\Local\a0a30553-75fb-4849-a411-46fe4bceb2f0\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • C:\Users\Admin\AppData\Local\a0a30553-75fb-4849-a411-46fe4bceb2f0\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • C:\Users\Admin\AppData\Local\a0a30553-75fb-4849-a411-46fe4bceb2f0\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • \ProgramData\mozglue.dll
    Filesize

    133KB

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • \ProgramData\nss3.dll
    Filesize

    1.2MB

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • memory/1008-122-0x0000000002250000-0x000000000236B000-memory.dmp
    Filesize

    1.1MB

  • memory/1008-121-0x0000000002120000-0x00000000021B9000-memory.dmp
    Filesize

    612KB

  • memory/1232-118-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1232-124-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1232-123-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1232-120-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1232-119-0x0000000000424141-mapping.dmp
  • memory/1796-125-0x0000000000000000-mapping.dmp
  • memory/2200-147-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/2200-141-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/2200-145-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/2200-142-0x000000000042118A-mapping.dmp
  • memory/2200-146-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/2200-148-0x0000000060900000-0x0000000060992000-memory.dmp
    Filesize

    584KB

  • memory/2336-144-0x0000000000776000-0x00000000007A1000-memory.dmp
    Filesize

    172KB

  • memory/2336-138-0x0000000000000000-mapping.dmp
  • memory/3512-127-0x0000000000000000-mapping.dmp
  • memory/4020-137-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4020-132-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4020-131-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4020-130-0x0000000000424141-mapping.dmp