Analysis

  • max time kernel
    151s
  • max time network
    171s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-11-2022 11:52

General

  • Target

    3be341602597015165b89f6db84d564b7946f04494153beb49c26a33558700f8.exe

  • Size

    665KB

  • MD5

    61b98d561011263318f5f9a3ba4f101a

  • SHA1

    f4735c23a90acd9f4fa71c0c1944ffb9f1cbf02c

  • SHA256

    3be341602597015165b89f6db84d564b7946f04494153beb49c26a33558700f8

  • SHA512

    0aab0026ea6eedea30d0eb3ab5ce44304107d1b4f18ecdeea5ee23c242485d823941f0e62475f68793f79d1843a9995eed3e7869ed69c3e3a0c4530e68e7dce2

  • SSDEEP

    12288:BYPd/yTPlCWjFEinTxJftNEeX/c+1DMVJG48Ln2ZwetfFSY:OPd/yTMWjHTDtlVDMWTD89FSY

Malware Config

Extracted

Family

djvu

C2

http://fresherlights.com/test1/get.php

Attributes
  • extension

    .kcvp

  • offline_id

    hlqzhQ6w5SquNDF4Ul2XBDJQkSIKbAT6rmRBTit1

  • payload_url

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

    http://fresherlights.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-lj5qINGbTc 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: support@fishmail.top Reserve e-mail address to contact us: datarestorehelp@airmail.cc Your personal ID: 0607Jhyjd

rsa_pubkey.plain

Extracted

Family

vidar

Version

55.9

Botnet

517

C2

https://t.me/headshotsonly

https://steamcommunity.com/profiles/76561199436777531

Attributes
  • profile_id

    517

Signatures

  • Detected Djvu ransomware 9 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 3 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 2 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.

  • Program crash 1 IoCs
  • 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 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3be341602597015165b89f6db84d564b7946f04494153beb49c26a33558700f8.exe
    "C:\Users\Admin\AppData\Local\Temp\3be341602597015165b89f6db84d564b7946f04494153beb49c26a33558700f8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2696
    • C:\Users\Admin\AppData\Local\Temp\3be341602597015165b89f6db84d564b7946f04494153beb49c26a33558700f8.exe
      "C:\Users\Admin\AppData\Local\Temp\3be341602597015165b89f6db84d564b7946f04494153beb49c26a33558700f8.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4088
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\6453128f-c613-4f0a-b515-0f9e99aaa82d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4840
      • C:\Users\Admin\AppData\Local\Temp\3be341602597015165b89f6db84d564b7946f04494153beb49c26a33558700f8.exe
        "C:\Users\Admin\AppData\Local\Temp\3be341602597015165b89f6db84d564b7946f04494153beb49c26a33558700f8.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:5052
        • C:\Users\Admin\AppData\Local\Temp\3be341602597015165b89f6db84d564b7946f04494153beb49c26a33558700f8.exe
          "C:\Users\Admin\AppData\Local\Temp\3be341602597015165b89f6db84d564b7946f04494153beb49c26a33558700f8.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:424
          • C:\Users\Admin\AppData\Local\dc926d78-1880-47c7-85bf-5ad08e71dec7\build2.exe
            "C:\Users\Admin\AppData\Local\dc926d78-1880-47c7-85bf-5ad08e71dec7\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4444
            • C:\Users\Admin\AppData\Local\dc926d78-1880-47c7-85bf-5ad08e71dec7\build2.exe
              "C:\Users\Admin\AppData\Local\dc926d78-1880-47c7-85bf-5ad08e71dec7\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:4692
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 4692 -s 1936
                7⤵
                • Program crash
                PID:4416
          • C:\Users\Admin\AppData\Local\dc926d78-1880-47c7-85bf-5ad08e71dec7\build3.exe
            "C:\Users\Admin\AppData\Local\dc926d78-1880-47c7-85bf-5ad08e71dec7\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4372
            • 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:2408
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4692 -ip 4692
    1⤵
      PID:3728

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    File Permissions Modification

    1
    T1222

    Modify Registry

    1
    T1112

    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

      593KB

      MD5

      c8fd9be83bc728cc04beffafc2907fe9

      SHA1

      95ab9f701e0024cedfbd312bcfe4e726744c4f2e

      SHA256

      ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

      SHA512

      fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

    • C:\ProgramData\nss3.dll
      Filesize

      2.0MB

      MD5

      1cc453cdf74f31e4d913ff9c10acdde2

      SHA1

      6e85eae544d6e965f15fa5c39700fa7202f3aafe

      SHA256

      ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

      SHA512

      dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

    • C:\Users\Admin\AppData\Local\6453128f-c613-4f0a-b515-0f9e99aaa82d\3be341602597015165b89f6db84d564b7946f04494153beb49c26a33558700f8.exe
      Filesize

      665KB

      MD5

      61b98d561011263318f5f9a3ba4f101a

      SHA1

      f4735c23a90acd9f4fa71c0c1944ffb9f1cbf02c

      SHA256

      3be341602597015165b89f6db84d564b7946f04494153beb49c26a33558700f8

      SHA512

      0aab0026ea6eedea30d0eb3ab5ce44304107d1b4f18ecdeea5ee23c242485d823941f0e62475f68793f79d1843a9995eed3e7869ed69c3e3a0c4530e68e7dce2

    • C:\Users\Admin\AppData\Local\dc926d78-1880-47c7-85bf-5ad08e71dec7\build2.exe
      Filesize

      299KB

      MD5

      03ddc9dc7312d33ad1c5f6ed2d167645

      SHA1

      e75de38aee3b0beb5cc91334ecbd8a876c8351a6

      SHA256

      60724da01de35adee6cb34317cd2947fbcb791a8381386d79072857a19a58708

      SHA512

      9a23eb681563719a6ad9202038a307e842b9a60c16aec2f01ce422feca11ac8d6e1d0e9a30e110e17bec4421121643ac87f075eae8bf127dca2213f7a2c6f1aa

    • C:\Users\Admin\AppData\Local\dc926d78-1880-47c7-85bf-5ad08e71dec7\build2.exe
      Filesize

      299KB

      MD5

      03ddc9dc7312d33ad1c5f6ed2d167645

      SHA1

      e75de38aee3b0beb5cc91334ecbd8a876c8351a6

      SHA256

      60724da01de35adee6cb34317cd2947fbcb791a8381386d79072857a19a58708

      SHA512

      9a23eb681563719a6ad9202038a307e842b9a60c16aec2f01ce422feca11ac8d6e1d0e9a30e110e17bec4421121643ac87f075eae8bf127dca2213f7a2c6f1aa

    • C:\Users\Admin\AppData\Local\dc926d78-1880-47c7-85bf-5ad08e71dec7\build2.exe
      Filesize

      299KB

      MD5

      03ddc9dc7312d33ad1c5f6ed2d167645

      SHA1

      e75de38aee3b0beb5cc91334ecbd8a876c8351a6

      SHA256

      60724da01de35adee6cb34317cd2947fbcb791a8381386d79072857a19a58708

      SHA512

      9a23eb681563719a6ad9202038a307e842b9a60c16aec2f01ce422feca11ac8d6e1d0e9a30e110e17bec4421121643ac87f075eae8bf127dca2213f7a2c6f1aa

    • C:\Users\Admin\AppData\Local\dc926d78-1880-47c7-85bf-5ad08e71dec7\build3.exe
      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\dc926d78-1880-47c7-85bf-5ad08e71dec7\build3.exe
      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • memory/424-147-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/424-148-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/424-145-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/424-143-0x0000000000000000-mapping.dmp
    • memory/2408-182-0x0000000000000000-mapping.dmp
    • memory/2696-136-0x00000000021A0000-0x00000000022BB000-memory.dmp
      Filesize

      1.1MB

    • memory/2696-135-0x0000000002109000-0x000000000219B000-memory.dmp
      Filesize

      584KB

    • memory/4088-132-0x0000000000000000-mapping.dmp
    • memory/4088-142-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/4088-138-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/4088-137-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/4088-134-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/4088-133-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/4372-161-0x0000000000000000-mapping.dmp
    • memory/4444-149-0x0000000000000000-mapping.dmp
    • memory/4444-156-0x00000000006AD000-0x00000000006D9000-memory.dmp
      Filesize

      176KB

    • memory/4444-158-0x00000000022A0000-0x00000000022EB000-memory.dmp
      Filesize

      300KB

    • memory/4692-160-0x0000000000400000-0x000000000045F000-memory.dmp
      Filesize

      380KB

    • memory/4692-159-0x0000000000400000-0x000000000045F000-memory.dmp
      Filesize

      380KB

    • memory/4692-157-0x0000000000400000-0x000000000045F000-memory.dmp
      Filesize

      380KB

    • memory/4692-155-0x0000000000400000-0x000000000045F000-memory.dmp
      Filesize

      380KB

    • memory/4692-153-0x0000000000400000-0x000000000045F000-memory.dmp
      Filesize

      380KB

    • memory/4692-152-0x0000000000000000-mapping.dmp
    • memory/4692-164-0x0000000061E00000-0x0000000061EF3000-memory.dmp
      Filesize

      972KB

    • memory/4692-185-0x0000000000400000-0x000000000045F000-memory.dmp
      Filesize

      380KB

    • memory/4840-139-0x0000000000000000-mapping.dmp
    • memory/5052-146-0x0000000002129000-0x00000000021BB000-memory.dmp
      Filesize

      584KB

    • memory/5052-141-0x0000000000000000-mapping.dmp