Analysis

  • max time kernel
    105s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    01-05-2022 05:41

General

  • Target

    a83da1831688b5b93a50df53fcc06993f796339505e15e169f97a6d8e5243963.exe

  • Size

    782KB

  • MD5

    59dab4f87d535b11fcd1a484963bd097

  • SHA1

    9dd37eecd8459bcc0bfc3c7f99fc806b59c85ebd

  • SHA256

    a83da1831688b5b93a50df53fcc06993f796339505e15e169f97a6d8e5243963

  • SHA512

    c950c3164f10f3db98bea2d0b2534c1e58145a4e457ceb0a289fe8bdd025be0d6d2db52c39b07bea1eee2264b8b8d480dfcc288c74c20b0e2cc35a005b3d71b7

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 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
  • Checks computer location settings 2 TTPs 2 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.

  • 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\a83da1831688b5b93a50df53fcc06993f796339505e15e169f97a6d8e5243963.exe
    "C:\Users\Admin\AppData\Local\Temp\a83da1831688b5b93a50df53fcc06993f796339505e15e169f97a6d8e5243963.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4184
    • C:\Users\Admin\AppData\Local\Temp\a83da1831688b5b93a50df53fcc06993f796339505e15e169f97a6d8e5243963.exe
      "C:\Users\Admin\AppData\Local\Temp\a83da1831688b5b93a50df53fcc06993f796339505e15e169f97a6d8e5243963.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3924
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\3c9cfa73-3d62-4f68-b3ff-466a35f07276" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4712
      • C:\Users\Admin\AppData\Local\Temp\a83da1831688b5b93a50df53fcc06993f796339505e15e169f97a6d8e5243963.exe
        "C:\Users\Admin\AppData\Local\Temp\a83da1831688b5b93a50df53fcc06993f796339505e15e169f97a6d8e5243963.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4544
        • C:\Users\Admin\AppData\Local\Temp\a83da1831688b5b93a50df53fcc06993f796339505e15e169f97a6d8e5243963.exe
          "C:\Users\Admin\AppData\Local\Temp\a83da1831688b5b93a50df53fcc06993f796339505e15e169f97a6d8e5243963.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:224
          • C:\Users\Admin\AppData\Local\6ab443fe-7496-4750-801f-cfb87972bc23\build2.exe
            "C:\Users\Admin\AppData\Local\6ab443fe-7496-4750-801f-cfb87972bc23\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4384
            • C:\Users\Admin\AppData\Local\6ab443fe-7496-4750-801f-cfb87972bc23\build2.exe
              "C:\Users\Admin\AppData\Local\6ab443fe-7496-4750-801f-cfb87972bc23\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:4968

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

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\mozglue.dll
    Filesize

    133KB

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • C:\ProgramData\nss3.dll
    Filesize

    1.2MB

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

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

    727B

    MD5

    289fc334ad161952e28a2f4976146d4a

    SHA1

    5be5906a154417ca0de53f69de1925f2fb76ddbc

    SHA256

    c1b9961d7c3432fd63c4976e9b731b671247a725ca52b4d2d0cd2d629d4f8a63

    SHA512

    77344deb6e4ebe180d5b33aa40f97558fe4144b3df41e7578450421947d296e1a0bdaf05dbb7dc7f1a08a0960f0b8f6eb64ea64f3697a35925d2979efbd6c16c

  • 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

    5ba5c20b184606aba36f5f26ae521354

    SHA1

    1a1231c35f7b0c21284ad0c0ae88dd4c236e21cd

    SHA256

    6deaa1a1f17a531b97f5fc128770a4ee39389f8724121dceef678b74734a92b0

    SHA512

    11c64bf5af379da4d4a630b317694cabeefd5b2c9eb652d268dab5391412aee74d642a526cfdb99b3a9503a30bf7a96e7e9c02350d6aacdf69097aa456ad3b35

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

    396B

    MD5

    614a4115e155dfc8d9869f9b8792d1d6

    SHA1

    29bcd5b17123cfb1204f8564e6d2f2464d96aa84

    SHA256

    f0382f860296ac10ec13cd37e019cebc878d6342ee216cba01f9d5a5899072f3

    SHA512

    4e53bfae9bdd5d0751c447ba73e64f918a5de5c70ebcb32164d6b2825459201f51bea8395da329b1c82ecf3fda17322f4f9ee7080c9e53f5b0db585960ba2e3d

  • C:\Users\Admin\AppData\Local\3c9cfa73-3d62-4f68-b3ff-466a35f07276\a83da1831688b5b93a50df53fcc06993f796339505e15e169f97a6d8e5243963.exe
    Filesize

    782KB

    MD5

    59dab4f87d535b11fcd1a484963bd097

    SHA1

    9dd37eecd8459bcc0bfc3c7f99fc806b59c85ebd

    SHA256

    a83da1831688b5b93a50df53fcc06993f796339505e15e169f97a6d8e5243963

    SHA512

    c950c3164f10f3db98bea2d0b2534c1e58145a4e457ceb0a289fe8bdd025be0d6d2db52c39b07bea1eee2264b8b8d480dfcc288c74c20b0e2cc35a005b3d71b7

  • C:\Users\Admin\AppData\Local\6ab443fe-7496-4750-801f-cfb87972bc23\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • C:\Users\Admin\AppData\Local\6ab443fe-7496-4750-801f-cfb87972bc23\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • C:\Users\Admin\AppData\Local\6ab443fe-7496-4750-801f-cfb87972bc23\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • memory/224-140-0x0000000000000000-mapping.dmp
  • memory/224-142-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/224-144-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/224-149-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/3924-135-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/3924-136-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/3924-134-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/3924-133-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/3924-132-0x0000000000000000-mapping.dmp
  • memory/4184-131-0x00000000023E0000-0x00000000024FB000-memory.dmp
    Filesize

    1.1MB

  • memory/4184-130-0x00000000007B3000-0x0000000000845000-memory.dmp
    Filesize

    584KB

  • memory/4384-150-0x0000000000000000-mapping.dmp
  • memory/4384-158-0x00000000005E0000-0x0000000000629000-memory.dmp
    Filesize

    292KB

  • memory/4384-156-0x0000000000848000-0x0000000000873000-memory.dmp
    Filesize

    172KB

  • memory/4544-143-0x00000000021FF000-0x0000000002291000-memory.dmp
    Filesize

    584KB

  • memory/4544-139-0x0000000000000000-mapping.dmp
  • memory/4712-137-0x0000000000000000-mapping.dmp
  • memory/4968-157-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/4968-154-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/4968-153-0x0000000000000000-mapping.dmp
  • memory/4968-159-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/4968-160-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/4968-161-0x0000000060900000-0x0000000060992000-memory.dmp
    Filesize

    584KB