Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-03-2023 23:20

General

  • Target

    a142fb44ca09d102ddf76868446554c508853b968318220451af37885a01403c.exe

  • Size

    759KB

  • MD5

    d92fdf68cfaba2824291b57e3206c672

  • SHA1

    1629ff8717d8897e45863262897c48e1ea5fa8ec

  • SHA256

    a142fb44ca09d102ddf76868446554c508853b968318220451af37885a01403c

  • SHA512

    081383ed7d97b03d4926885812e549f3c93d7b949410ce76908d65bf0c75b5af35e3957c03fc7612944a8c2aaecf80c72c47a1771a4d2a17c76453924e1ab3f6

  • SSDEEP

    12288:qqfFqeH1umXo8Om/ys+UAvnOkNNkH+L8ZD7B1iYLS77L:qr4uv8OMys6G6KYST0

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test2/get.php

Attributes
  • extension

    .nifr

  • offline_id

    FCP2fiITr4rryFhFBnA59GMgwES5CunmcbPc76t1

  • payload_url

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

    http://zexeq.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-v8HcfXTy5x 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: 0679SUjhw

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.2

Botnet

5df88deb5dde677ba658b77ad5f60248

C2

https://steamcommunity.com/profiles/76561199489580435

https://t.me/tabootalks

Attributes
  • profile_id_v2

    5df88deb5dde677ba658b77ad5f60248

  • user_agent

    Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.79

Signatures

  • Detected Djvu ransomware 16 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\a142fb44ca09d102ddf76868446554c508853b968318220451af37885a01403c.exe
    "C:\Users\Admin\AppData\Local\Temp\a142fb44ca09d102ddf76868446554c508853b968318220451af37885a01403c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4968
    • C:\Users\Admin\AppData\Local\Temp\a142fb44ca09d102ddf76868446554c508853b968318220451af37885a01403c.exe
      "C:\Users\Admin\AppData\Local\Temp\a142fb44ca09d102ddf76868446554c508853b968318220451af37885a01403c.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4704
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a8e8cbb3-44ed-45d7-8671-edca68cb316a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2272
      • C:\Users\Admin\AppData\Local\Temp\a142fb44ca09d102ddf76868446554c508853b968318220451af37885a01403c.exe
        "C:\Users\Admin\AppData\Local\Temp\a142fb44ca09d102ddf76868446554c508853b968318220451af37885a01403c.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3732
        • C:\Users\Admin\AppData\Local\Temp\a142fb44ca09d102ddf76868446554c508853b968318220451af37885a01403c.exe
          "C:\Users\Admin\AppData\Local\Temp\a142fb44ca09d102ddf76868446554c508853b968318220451af37885a01403c.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3304
          • C:\Users\Admin\AppData\Local\a64ea1fd-aba6-4fed-9107-951ad96c1d26\build2.exe
            "C:\Users\Admin\AppData\Local\a64ea1fd-aba6-4fed-9107-951ad96c1d26\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2672
            • C:\Users\Admin\AppData\Local\a64ea1fd-aba6-4fed-9107-951ad96c1d26\build2.exe
              "C:\Users\Admin\AppData\Local\a64ea1fd-aba6-4fed-9107-951ad96c1d26\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:3432
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 3432 -s 1896
                7⤵
                • Program crash
                PID:5076
          • C:\Users\Admin\AppData\Local\a64ea1fd-aba6-4fed-9107-951ad96c1d26\build3.exe
            "C:\Users\Admin\AppData\Local\a64ea1fd-aba6-4fed-9107-951ad96c1d26\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:612
            • 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:3144
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3432 -ip 3432
    1⤵
      PID:5004
    • 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:5028
      • 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:2880

    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

      ee7ad9d8f28e0558a94e667206e8a271

      SHA1

      b49a079526da92d55f2d1bc66659836c0f90a086

      SHA256

      9eeeef2cbd8192c6586ffa64114ad0c3e8e5ab3a73817e1044895517c6eba712

      SHA512

      0c1596e7b8e54e0cce8139a339c4c34f5f9391ce0b7051673abe7a43f174f292e0d3267b1ce1186247535941b416962b6fe63cb03855ddea254cf09fddad3223

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

      Filesize

      1KB

      MD5

      6a3b8331e801f083b403b0857ed8d574

      SHA1

      48d275731f1dbd0630d1ca55a1b05f149a011d1f

      SHA256

      98651a2da4a4613bc2a03c4128926fe6b05f1af8a7a21e1fedec75db013706a0

      SHA512

      7527b8857707c8822e4b7f5049ddc9b4c49933e68535690746d84b7f0187a10f36e874719bdb1bf3ba8b035568a7cbafd687b80c4621dc35552d73f7e497071d

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

      Filesize

      488B

      MD5

      2b952b1da7f2152cc78319bd353d4a06

      SHA1

      e3efaffa346c7cd0ffac4e56bfe1b5381fba2d64

      SHA256

      0e2e85e9879613213346b519c6ac185f5b6cafbc2803cc23cad50a1c053f5f4a

      SHA512

      fe1a8d72e0808ecf0d1aa7d93837e9e6f5b99f2c25d42914c887a27a3abe9ef6aae074a3cbca455bb485fc19e1aea5a92125f3689741cad4bc72a8f59ff6344c

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

      Filesize

      482B

      MD5

      a801019d38ba50814ee8096e154aa3ca

      SHA1

      145f63c838389ea96ac9a0517fa4f4a242a2526f

      SHA256

      1e488e1e6f10e59d43190dba4b3361204aeaadd1541d149c150f5d700bc9165b

      SHA512

      ce157e4ea6ca3b0f735fc358a48c560b9bf10695e97d5548af7bf1b32f38e5d86fe0f3a758b68cc8e356469383e9c1ad8cdfd6a79260cc7f0bf72a008c300fc5

    • C:\Users\Admin\AppData\Local\a64ea1fd-aba6-4fed-9107-951ad96c1d26\build2.exe

      Filesize

      416KB

      MD5

      aa18968e6cfbdc382ada6a3ed2852085

      SHA1

      4a41fa1a182916d5790aa2071106b3441d64468d

      SHA256

      c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

      SHA512

      8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

    • C:\Users\Admin\AppData\Local\a64ea1fd-aba6-4fed-9107-951ad96c1d26\build2.exe

      Filesize

      416KB

      MD5

      aa18968e6cfbdc382ada6a3ed2852085

      SHA1

      4a41fa1a182916d5790aa2071106b3441d64468d

      SHA256

      c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

      SHA512

      8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

    • C:\Users\Admin\AppData\Local\a64ea1fd-aba6-4fed-9107-951ad96c1d26\build2.exe

      Filesize

      416KB

      MD5

      aa18968e6cfbdc382ada6a3ed2852085

      SHA1

      4a41fa1a182916d5790aa2071106b3441d64468d

      SHA256

      c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

      SHA512

      8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

    • C:\Users\Admin\AppData\Local\a64ea1fd-aba6-4fed-9107-951ad96c1d26\build2.exe

      Filesize

      416KB

      MD5

      aa18968e6cfbdc382ada6a3ed2852085

      SHA1

      4a41fa1a182916d5790aa2071106b3441d64468d

      SHA256

      c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

      SHA512

      8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

    • C:\Users\Admin\AppData\Local\a64ea1fd-aba6-4fed-9107-951ad96c1d26\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\a64ea1fd-aba6-4fed-9107-951ad96c1d26\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\a64ea1fd-aba6-4fed-9107-951ad96c1d26\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\a8e8cbb3-44ed-45d7-8671-edca68cb316a\a142fb44ca09d102ddf76868446554c508853b968318220451af37885a01403c.exe

      Filesize

      759KB

      MD5

      d92fdf68cfaba2824291b57e3206c672

      SHA1

      1629ff8717d8897e45863262897c48e1ea5fa8ec

      SHA256

      a142fb44ca09d102ddf76868446554c508853b968318220451af37885a01403c

      SHA512

      081383ed7d97b03d4926885812e549f3c93d7b949410ce76908d65bf0c75b5af35e3957c03fc7612944a8c2aaecf80c72c47a1771a4d2a17c76453924e1ab3f6

    • 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/2672-184-0x0000000002DF0000-0x0000000002E47000-memory.dmp

      Filesize

      348KB

    • memory/3304-159-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3304-168-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3304-167-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3304-278-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3304-165-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3304-161-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3304-193-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3304-160-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3304-154-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3304-153-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3432-183-0x0000000000400000-0x000000000046C000-memory.dmp

      Filesize

      432KB

    • memory/3432-276-0x0000000000400000-0x000000000046C000-memory.dmp

      Filesize

      432KB

    • memory/3432-180-0x0000000000400000-0x000000000046C000-memory.dmp

      Filesize

      432KB

    • memory/3432-279-0x0000000000400000-0x000000000046C000-memory.dmp

      Filesize

      432KB

    • memory/3432-197-0x0000000000400000-0x000000000046C000-memory.dmp

      Filesize

      432KB

    • memory/3432-207-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/3432-277-0x0000000000400000-0x000000000046C000-memory.dmp

      Filesize

      432KB

    • memory/3432-182-0x0000000000400000-0x000000000046C000-memory.dmp

      Filesize

      432KB

    • memory/4704-135-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4704-134-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4704-137-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4704-148-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4704-149-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4968-136-0x00000000039E0000-0x0000000003AFB000-memory.dmp

      Filesize

      1.1MB