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Analysis

  • max time kernel
    72s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/02/2023, 11:01

General

  • Target

    9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4.exe

  • Size

    705KB

  • MD5

    e494b79c75746c25bc46d8dcf8ae1732

  • SHA1

    4b395fb66d78adbe3f7c60d68bd7b528f0473174

  • SHA256

    9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4

  • SHA512

    a1ff36885b99230421e88fe25ff03aa3fce09d00bb56bd24512069d865071ef2a69e73b072e05334df1b9f5c4b15a0a6a652f0b84b7c89dedb0ce7502f82b828

  • SSDEEP

    12288:kppaduKBeU4e4Ar72Vo6yVoiSiGN3uli58c5R2E2WXa9SMx+u/5WCWh:kHadN94or72wPfGB6imE2W1UWCW

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .vvmm

  • offline_id

    9c20OtJsXdFeF07b1IeFK5ERGv1zIb659YG380t1

  • payload_url

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

    http://bihsy.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-IiDRZpWuwI 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: 0643JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

2.4

Botnet

19

Attributes
  • profile_id

    19

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.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 4 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.

  • 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4.exe
    "C:\Users\Admin\AppData\Local\Temp\9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4848
    • C:\Users\Admin\AppData\Local\Temp\9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4.exe
      "C:\Users\Admin\AppData\Local\Temp\9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1344
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\561fcbc9-f281-49b5-a0ae-9cdd75071be9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1664
      • C:\Users\Admin\AppData\Local\Temp\9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4.exe
        "C:\Users\Admin\AppData\Local\Temp\9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2164
        • C:\Users\Admin\AppData\Local\Temp\9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4.exe
          "C:\Users\Admin\AppData\Local\Temp\9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:208
          • C:\Users\Admin\AppData\Local\fd84bc26-86bc-4a55-8eb4-d780f18e12fb\build2.exe
            "C:\Users\Admin\AppData\Local\fd84bc26-86bc-4a55-8eb4-d780f18e12fb\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4392
            • C:\Users\Admin\AppData\Local\fd84bc26-86bc-4a55-8eb4-d780f18e12fb\build2.exe
              "C:\Users\Admin\AppData\Local\fd84bc26-86bc-4a55-8eb4-d780f18e12fb\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:2988
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2988 -s 1976
                7⤵
                • Program crash
                PID:4704
          • C:\Users\Admin\AppData\Local\fd84bc26-86bc-4a55-8eb4-d780f18e12fb\build3.exe
            "C:\Users\Admin\AppData\Local\fd84bc26-86bc-4a55-8eb4-d780f18e12fb\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3144
            • 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:1948
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2988 -ip 2988
    1⤵
      PID:1420
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:900
      • 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"
        2⤵
        • Creates scheduled task(s)
        PID:3376

    Network

    MITRE ATT&CK Enterprise v6

    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\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

      Filesize

      2KB

      MD5

      f298e6ae8164740e277bcb589c8b7696

      SHA1

      efb68d0759def8abc263b0173930315ae417eff3

      SHA256

      cf4e54a8f46a697c97fedf75724800849d115923d6b9ab6caee58153efcb5e26

      SHA512

      cb2bffd62fe7932eb3915457a1b9bafda435965a1b79eba7cf6ab00a0734a4f4496cdc5eb5860bb70009004745f783de359ae7d480d4b5fc96a356e7023aa2d6

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

      Filesize

      1KB

      MD5

      993e8b8577c97c7e05f2f14fc91b6822

      SHA1

      115472cc6481473f1c16844a855938390134bb2e

      SHA256

      0455176415d825ae6af414e9e4ea77bb8e81b521996bed8f14c3b72c24a953d4

      SHA512

      df59164579d3ee35fa3a89db6f5f3c7754069fd6d2d4014d87a9be9dbbc960ee52d0b9701174dada349491a9d3ebfb025ba284fee5da9998da5ca224d9f249cc

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

      Filesize

      488B

      MD5

      795686abcbb203a39eaad43cd39b52cb

      SHA1

      92b46e93420e3f100e264ac59a505dd5cf60390e

      SHA256

      c1b29bf898864f9b782779857d29281320813c1a69b72338af62e8a75af702df

      SHA512

      a13bd533ce3386d2ef58ac27231d0af44c98ebd9a99e21cfa7d78e6fa5b6f192b24058edc6978271baea54e7da71951b7a17de4f12ee804bc0e3fe7aecd94ffd

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

      Filesize

      482B

      MD5

      636db3c46f8de87f0c0e9349ee9ced40

      SHA1

      06e16f514305275afcdf1d04a39849635cf2c8d6

      SHA256

      32b7120f6adb97ec3e056ea3805cf3d5a11949bd9c4e126729db5c506e8a43d7

      SHA512

      67a69eedb74bdcb0bd3f34258679d3327c35c56a86dca3615f026502929e57a5be7c3bca34ff7c46ff315e36a62b6a86f3fed91105f8f0f913f8dbcfc1e862f9

    • C:\Users\Admin\AppData\Local\561fcbc9-f281-49b5-a0ae-9cdd75071be9\9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4.exe

      Filesize

      705KB

      MD5

      e494b79c75746c25bc46d8dcf8ae1732

      SHA1

      4b395fb66d78adbe3f7c60d68bd7b528f0473174

      SHA256

      9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4

      SHA512

      a1ff36885b99230421e88fe25ff03aa3fce09d00bb56bd24512069d865071ef2a69e73b072e05334df1b9f5c4b15a0a6a652f0b84b7c89dedb0ce7502f82b828

    • C:\Users\Admin\AppData\Local\fd84bc26-86bc-4a55-8eb4-d780f18e12fb\build2.exe

      Filesize

      422KB

      MD5

      0b622eb410bfb32c5fa7b45eb3c116d2

      SHA1

      606d111174079e4d784e95f285805f14116e6d63

      SHA256

      9b7b45434353b99f97d33f44e225e71b9c164cd21ae56335c078cca20ae29c1d

      SHA512

      ffc1c0caf526c598624845c4d15df2fd68309f8027373c971ed7405f1bda52e89db6b936ce11937d038c3c1a2dba4fcbc70ba8f28d8d1aa4bf4325f08a6a61c4

    • C:\Users\Admin\AppData\Local\fd84bc26-86bc-4a55-8eb4-d780f18e12fb\build2.exe

      Filesize

      422KB

      MD5

      0b622eb410bfb32c5fa7b45eb3c116d2

      SHA1

      606d111174079e4d784e95f285805f14116e6d63

      SHA256

      9b7b45434353b99f97d33f44e225e71b9c164cd21ae56335c078cca20ae29c1d

      SHA512

      ffc1c0caf526c598624845c4d15df2fd68309f8027373c971ed7405f1bda52e89db6b936ce11937d038c3c1a2dba4fcbc70ba8f28d8d1aa4bf4325f08a6a61c4

    • C:\Users\Admin\AppData\Local\fd84bc26-86bc-4a55-8eb4-d780f18e12fb\build2.exe

      Filesize

      422KB

      MD5

      0b622eb410bfb32c5fa7b45eb3c116d2

      SHA1

      606d111174079e4d784e95f285805f14116e6d63

      SHA256

      9b7b45434353b99f97d33f44e225e71b9c164cd21ae56335c078cca20ae29c1d

      SHA512

      ffc1c0caf526c598624845c4d15df2fd68309f8027373c971ed7405f1bda52e89db6b936ce11937d038c3c1a2dba4fcbc70ba8f28d8d1aa4bf4325f08a6a61c4

    • C:\Users\Admin\AppData\Local\fd84bc26-86bc-4a55-8eb4-d780f18e12fb\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\fd84bc26-86bc-4a55-8eb4-d780f18e12fb\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • memory/208-152-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/208-145-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/208-147-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/208-188-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1344-142-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1344-138-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1344-133-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1344-134-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1344-135-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2164-146-0x0000000002218000-0x00000000022AA000-memory.dmp

      Filesize

      584KB

    • memory/2988-167-0x0000000000400000-0x0000000000472000-memory.dmp

      Filesize

      456KB

    • memory/2988-161-0x0000000000400000-0x0000000000472000-memory.dmp

      Filesize

      456KB

    • memory/2988-165-0x0000000000400000-0x0000000000472000-memory.dmp

      Filesize

      456KB

    • memory/2988-163-0x0000000000400000-0x0000000000472000-memory.dmp

      Filesize

      456KB

    • memory/2988-168-0x0000000050CC0000-0x0000000050DB3000-memory.dmp

      Filesize

      972KB

    • memory/2988-189-0x0000000000400000-0x0000000000472000-memory.dmp

      Filesize

      456KB

    • memory/4392-164-0x00000000006AE000-0x00000000006E2000-memory.dmp

      Filesize

      208KB

    • memory/4392-166-0x0000000002170000-0x00000000021CE000-memory.dmp

      Filesize

      376KB

    • memory/4848-136-0x000000000226F000-0x0000000002301000-memory.dmp

      Filesize

      584KB

    • memory/4848-137-0x0000000002420000-0x000000000253B000-memory.dmp

      Filesize

      1.1MB