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Analysis

  • max time kernel
    69s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/02/2023, 05:41

General

  • Target

    deb7ebd62a390924b91dd3ba906c3e039a37d0d37fbfa8a8b90b95dc3fbb5869.exe

  • Size

    880KB

  • MD5

    583709743307f1a56efb4530359e5638

  • SHA1

    3286537d896e4276e076cfc28b7a35aad04ec4c2

  • SHA256

    deb7ebd62a390924b91dd3ba906c3e039a37d0d37fbfa8a8b90b95dc3fbb5869

  • SHA512

    76b484411644f93860c1724434cb2bc838c15f507d76c3543be9b3714a2e276ed6bf734f96a9b9e8a6b7008fbaf72a691cb9cc5bcaacbc06473e36caf1e5e874

  • SSDEEP

    12288:sbs0DD6kx+5n8trICS6tYK/Zgv070oQYRrcQBMdk:stDpxmn8NI6R8o1AQBMdk

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\deb7ebd62a390924b91dd3ba906c3e039a37d0d37fbfa8a8b90b95dc3fbb5869.exe
    "C:\Users\Admin\AppData\Local\Temp\deb7ebd62a390924b91dd3ba906c3e039a37d0d37fbfa8a8b90b95dc3fbb5869.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1724
    • C:\Users\Admin\AppData\Local\Temp\deb7ebd62a390924b91dd3ba906c3e039a37d0d37fbfa8a8b90b95dc3fbb5869.exe
      "C:\Users\Admin\AppData\Local\Temp\deb7ebd62a390924b91dd3ba906c3e039a37d0d37fbfa8a8b90b95dc3fbb5869.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1312
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\8f2e8fe0-c658-4312-bd3b-8077c29feb61" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3992
      • C:\Users\Admin\AppData\Local\Temp\deb7ebd62a390924b91dd3ba906c3e039a37d0d37fbfa8a8b90b95dc3fbb5869.exe
        "C:\Users\Admin\AppData\Local\Temp\deb7ebd62a390924b91dd3ba906c3e039a37d0d37fbfa8a8b90b95dc3fbb5869.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3632
        • C:\Users\Admin\AppData\Local\Temp\deb7ebd62a390924b91dd3ba906c3e039a37d0d37fbfa8a8b90b95dc3fbb5869.exe
          "C:\Users\Admin\AppData\Local\Temp\deb7ebd62a390924b91dd3ba906c3e039a37d0d37fbfa8a8b90b95dc3fbb5869.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:916
          • C:\Users\Admin\AppData\Local\40fbdd4d-780b-46cb-9031-32aca8dd2cbd\build2.exe
            "C:\Users\Admin\AppData\Local\40fbdd4d-780b-46cb-9031-32aca8dd2cbd\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4608
            • C:\Users\Admin\AppData\Local\40fbdd4d-780b-46cb-9031-32aca8dd2cbd\build2.exe
              "C:\Users\Admin\AppData\Local\40fbdd4d-780b-46cb-9031-32aca8dd2cbd\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:3180
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 3180 -s 1992
                7⤵
                • Program crash
                PID:2032
          • C:\Users\Admin\AppData\Local\40fbdd4d-780b-46cb-9031-32aca8dd2cbd\build3.exe
            "C:\Users\Admin\AppData\Local\40fbdd4d-780b-46cb-9031-32aca8dd2cbd\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3372
            • 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:3168
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3180 -ip 3180
    1⤵
      PID:4524
    • 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:3112
      • 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:3700

    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

      88c1baba352577878a6c51f9ef6523de

      SHA1

      5a2e09c7386f4e2aa1a1fa42708566fff97fa59c

      SHA256

      582345ce77a9dca1a30e0f55591fb2bb1bff51ea3f169eb76afb6914fabd5029

      SHA512

      fff3ad502996c43af8c4518fc94364c2a7ec74f27af01bd6e0438cb09550679d7c02b15735231c4414935dbb4398dc6238101de4898351fdbf06f7d381fddf62

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

      Filesize

      1KB

      MD5

      1b11a6392d2c43073e05c7ea57724b91

      SHA1

      684593b291c26ba749c7bd07a76d1b6f1ff616e1

      SHA256

      1166ec0c19ebb36567b96b919573eacb2279bdff4367ebd5abf6182c918976dc

      SHA512

      87d9c26d11a95df4b6d08453f3183c9d7d77dbd420f9f52b73aed18122cac573f698a1a094effdcd8118f7f5bc519b9f7de1ebd64d5fc86e886f9546bff3052e

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

      Filesize

      488B

      MD5

      7acbc6f626c8c87026f36f0725f89cdc

      SHA1

      3783bfbfa3314a1c222e0d91ea41f0604cf47db2

      SHA256

      97b2149fe45fbdb2f09cf0f06b827f444f00856a033ce0b879d26ff561f053de

      SHA512

      ad5ad33f62b32e49a9accbadd69341aac7a1a3ab8a0ccb7f4b257da1eacbe7381201d370fd4e9066cbc9d1c54f3cd977e7330ab29e34998c964c0fbbfada7953

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

      Filesize

      482B

      MD5

      b3541c37525bc8e4eff7bee04e3a0953

      SHA1

      d2563b170c4e544d6d7f42160853dcaccc259ca8

      SHA256

      08080e90c3a46a3b7bce7aa7d7e3fce9c20568960697758cf9bfef8b84fac93d

      SHA512

      ac8b30c4c22b5c96ca72094fc4812a6599119152225161b4cfcb8f65705a03d6ca45a39e8c953a987d4b24745fd7cb9d6fce41f8afbc6486629c172d14bb376b

    • C:\Users\Admin\AppData\Local\40fbdd4d-780b-46cb-9031-32aca8dd2cbd\build2.exe

      Filesize

      422KB

      MD5

      0b622eb410bfb32c5fa7b45eb3c116d2

      SHA1

      606d111174079e4d784e95f285805f14116e6d63

      SHA256

      9b7b45434353b99f97d33f44e225e71b9c164cd21ae56335c078cca20ae29c1d

      SHA512

      ffc1c0caf526c598624845c4d15df2fd68309f8027373c971ed7405f1bda52e89db6b936ce11937d038c3c1a2dba4fcbc70ba8f28d8d1aa4bf4325f08a6a61c4

    • C:\Users\Admin\AppData\Local\40fbdd4d-780b-46cb-9031-32aca8dd2cbd\build2.exe

      Filesize

      422KB

      MD5

      0b622eb410bfb32c5fa7b45eb3c116d2

      SHA1

      606d111174079e4d784e95f285805f14116e6d63

      SHA256

      9b7b45434353b99f97d33f44e225e71b9c164cd21ae56335c078cca20ae29c1d

      SHA512

      ffc1c0caf526c598624845c4d15df2fd68309f8027373c971ed7405f1bda52e89db6b936ce11937d038c3c1a2dba4fcbc70ba8f28d8d1aa4bf4325f08a6a61c4

    • C:\Users\Admin\AppData\Local\40fbdd4d-780b-46cb-9031-32aca8dd2cbd\build2.exe

      Filesize

      422KB

      MD5

      0b622eb410bfb32c5fa7b45eb3c116d2

      SHA1

      606d111174079e4d784e95f285805f14116e6d63

      SHA256

      9b7b45434353b99f97d33f44e225e71b9c164cd21ae56335c078cca20ae29c1d

      SHA512

      ffc1c0caf526c598624845c4d15df2fd68309f8027373c971ed7405f1bda52e89db6b936ce11937d038c3c1a2dba4fcbc70ba8f28d8d1aa4bf4325f08a6a61c4

    • C:\Users\Admin\AppData\Local\40fbdd4d-780b-46cb-9031-32aca8dd2cbd\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\40fbdd4d-780b-46cb-9031-32aca8dd2cbd\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\8f2e8fe0-c658-4312-bd3b-8077c29feb61\deb7ebd62a390924b91dd3ba906c3e039a37d0d37fbfa8a8b90b95dc3fbb5869.exe

      Filesize

      880KB

      MD5

      583709743307f1a56efb4530359e5638

      SHA1

      3286537d896e4276e076cfc28b7a35aad04ec4c2

      SHA256

      deb7ebd62a390924b91dd3ba906c3e039a37d0d37fbfa8a8b90b95dc3fbb5869

      SHA512

      76b484411644f93860c1724434cb2bc838c15f507d76c3543be9b3714a2e276ed6bf734f96a9b9e8a6b7008fbaf72a691cb9cc5bcaacbc06473e36caf1e5e874

    • 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/916-152-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/916-145-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/916-160-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/916-147-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1312-137-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1312-138-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1312-134-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1312-133-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1312-142-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1724-136-0x0000000002380000-0x000000000249B000-memory.dmp

      Filesize

      1.1MB

    • memory/1724-135-0x000000000229B000-0x000000000232C000-memory.dmp

      Filesize

      580KB

    • memory/3180-162-0x0000000000400000-0x0000000000472000-memory.dmp

      Filesize

      456KB

    • memory/3180-168-0x0000000000400000-0x0000000000472000-memory.dmp

      Filesize

      456KB

    • memory/3180-189-0x0000000000400000-0x0000000000472000-memory.dmp

      Filesize

      456KB

    • memory/3180-165-0x0000000000400000-0x0000000000472000-memory.dmp

      Filesize

      456KB

    • memory/3180-167-0x0000000000400000-0x0000000000472000-memory.dmp

      Filesize

      456KB

    • memory/3180-169-0x0000000050BC0000-0x0000000050CB3000-memory.dmp

      Filesize

      972KB

    • memory/3632-146-0x00000000020F8000-0x0000000002189000-memory.dmp

      Filesize

      580KB

    • memory/4608-166-0x0000000002100000-0x000000000215E000-memory.dmp

      Filesize

      376KB

    • memory/4608-164-0x00000000005AE000-0x00000000005E2000-memory.dmp

      Filesize

      208KB