Analysis

  • max time kernel
    126s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    01-05-2022 10:20

General

  • Target

    8ff042a53e6496c46e0f34f67433432636a9388b99de1167e9b45e8ffa1dc12b.exe

  • Size

    782KB

  • MD5

    cb31f5f978c99d7a683ab16329da6b47

  • SHA1

    ccf7924263e17e2e214cbed4c42ec46f1773bbac

  • SHA256

    8ff042a53e6496c46e0f34f67433432636a9388b99de1167e9b45e8ffa1dc12b

  • SHA512

    6e2114b3eb1553d6e462faf477c20b42753fe2af34bf22b71c7bbe7b75e86ac05921c45f57a76f546a222d3fa27ed6606f4cea54d401873a1b3334316876c23f

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 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\8ff042a53e6496c46e0f34f67433432636a9388b99de1167e9b45e8ffa1dc12b.exe
    "C:\Users\Admin\AppData\Local\Temp\8ff042a53e6496c46e0f34f67433432636a9388b99de1167e9b45e8ffa1dc12b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3136
    • C:\Users\Admin\AppData\Local\Temp\8ff042a53e6496c46e0f34f67433432636a9388b99de1167e9b45e8ffa1dc12b.exe
      "C:\Users\Admin\AppData\Local\Temp\8ff042a53e6496c46e0f34f67433432636a9388b99de1167e9b45e8ffa1dc12b.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3640
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\6f92dc8d-2d6e-4620-a31d-826e2ac735f2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:792
      • C:\Users\Admin\AppData\Local\Temp\8ff042a53e6496c46e0f34f67433432636a9388b99de1167e9b45e8ffa1dc12b.exe
        "C:\Users\Admin\AppData\Local\Temp\8ff042a53e6496c46e0f34f67433432636a9388b99de1167e9b45e8ffa1dc12b.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2840
        • C:\Users\Admin\AppData\Local\Temp\8ff042a53e6496c46e0f34f67433432636a9388b99de1167e9b45e8ffa1dc12b.exe
          "C:\Users\Admin\AppData\Local\Temp\8ff042a53e6496c46e0f34f67433432636a9388b99de1167e9b45e8ffa1dc12b.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4720
          • C:\Users\Admin\AppData\Local\43cf6366-ae94-45b9-b3e4-a9c1b4b4f2fd\build2.exe
            "C:\Users\Admin\AppData\Local\43cf6366-ae94-45b9-b3e4-a9c1b4b4f2fd\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:452
            • C:\Users\Admin\AppData\Local\43cf6366-ae94-45b9-b3e4-a9c1b4b4f2fd\build2.exe
              "C:\Users\Admin\AppData\Local\43cf6366-ae94-45b9-b3e4-a9c1b4b4f2fd\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:5116
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k appmodel -p -s camsvc
    1⤵
      PID:4724

    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

      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

      902e8d1c74ad9b91f058305e5bc8b195

      SHA1

      fc3886fb66625b089746e660d7d404076bf4d561

      SHA256

      ae746778005904ab964ad27561a64b407310b90a5b7557501a1bd8f4efc1dc5e

      SHA512

      b435b9f7547811f166da7831aff32aac8f2b07ed8be551adc6f0f4011e450f879316df24930c3259905f39ea60e1008076598bfbfa4f1ef18907e4bb3abe6b16

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

      396B

      MD5

      979f7daaa995f976a3f0106f4a0e0cb5

      SHA1

      7bd987a524a30a0cca4fe8df712773cebe693241

      SHA256

      06864ec87ba2257b75cb56938723666bc46434147e72d5ef6995300a86ff07e5

      SHA512

      c74094633a20bcf7293b9678ac07656513bfe1e7357f0c32dbbf9f0dfbf25797300a9fbd79cd0c91a39743827019c20744315301954526a05aa832e35229fda1

    • C:\Users\Admin\AppData\Local\43cf6366-ae94-45b9-b3e4-a9c1b4b4f2fd\build2.exe
      Filesize

      368KB

      MD5

      ad1b502b6714c0a374b055332018974b

      SHA1

      672f4e44475177ddcb1bfa73db3c5dee0f031bc2

      SHA256

      f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

      SHA512

      0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

    • C:\Users\Admin\AppData\Local\43cf6366-ae94-45b9-b3e4-a9c1b4b4f2fd\build2.exe
      Filesize

      368KB

      MD5

      ad1b502b6714c0a374b055332018974b

      SHA1

      672f4e44475177ddcb1bfa73db3c5dee0f031bc2

      SHA256

      f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

      SHA512

      0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

    • C:\Users\Admin\AppData\Local\43cf6366-ae94-45b9-b3e4-a9c1b4b4f2fd\build2.exe
      Filesize

      368KB

      MD5

      ad1b502b6714c0a374b055332018974b

      SHA1

      672f4e44475177ddcb1bfa73db3c5dee0f031bc2

      SHA256

      f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

      SHA512

      0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

    • C:\Users\Admin\AppData\Local\6f92dc8d-2d6e-4620-a31d-826e2ac735f2\8ff042a53e6496c46e0f34f67433432636a9388b99de1167e9b45e8ffa1dc12b.exe
      Filesize

      782KB

      MD5

      cb31f5f978c99d7a683ab16329da6b47

      SHA1

      ccf7924263e17e2e214cbed4c42ec46f1773bbac

      SHA256

      8ff042a53e6496c46e0f34f67433432636a9388b99de1167e9b45e8ffa1dc12b

      SHA512

      6e2114b3eb1553d6e462faf477c20b42753fe2af34bf22b71c7bbe7b75e86ac05921c45f57a76f546a222d3fa27ed6606f4cea54d401873a1b3334316876c23f

    • memory/452-150-0x0000000000000000-mapping.dmp
    • memory/452-158-0x0000000000610000-0x0000000000659000-memory.dmp
      Filesize

      292KB

    • memory/452-157-0x0000000000529000-0x0000000000553000-memory.dmp
      Filesize

      168KB

    • memory/792-137-0x0000000000000000-mapping.dmp
    • memory/2840-142-0x000000000212D000-0x00000000021BF000-memory.dmp
      Filesize

      584KB

    • memory/2840-139-0x0000000000000000-mapping.dmp
    • memory/3136-133-0x000000000225C000-0x00000000022EE000-memory.dmp
      Filesize

      584KB

    • memory/3136-134-0x00000000022F0000-0x000000000240B000-memory.dmp
      Filesize

      1.1MB

    • memory/3640-132-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3640-135-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3640-136-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3640-131-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3640-130-0x0000000000000000-mapping.dmp
    • memory/4720-143-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/4720-149-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/4720-140-0x0000000000000000-mapping.dmp
    • memory/4720-144-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/5116-153-0x0000000000000000-mapping.dmp
    • memory/5116-159-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/5116-160-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/5116-161-0x0000000060900000-0x0000000060992000-memory.dmp
      Filesize

      584KB

    • memory/5116-156-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/5116-154-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB