Analysis

  • max time kernel
    147s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-03-2023 15:41

General

  • Target

    505d6234031672419cf4e94a32117b35a5f95c45cffc1f295c53da13a7b26208.exe

  • Size

    803KB

  • MD5

    8e881779fbc7b6a2b77539364ce54a2e

  • SHA1

    081c960aafe1b06f521b784fb04493291a60b36a

  • SHA256

    505d6234031672419cf4e94a32117b35a5f95c45cffc1f295c53da13a7b26208

  • SHA512

    ade2c2ed6fdc04fda98bbf88a6ba7666e0f621b5b81e0bb5e912cae1390a7972159a813e517141783d0c718e21655a8914983c2b1a307d9f694041ee7155ba8a

  • SSDEEP

    12288:in4r/sDPuketcX5PlMjV3mtEjx5pB1Y3GWzSHrA/8vCx858lMnjoZz9:RzsDPzetcrMACjxCsXvEFa2

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .jywd

  • offline_id

    MEMHlobHgXqvmTWaMsLcwGZhDOd00bblO1yevst1

  • 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-fkW8qLaCVQ 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@freshmail.top Reserve e-mail address to contact us: datarestorehelp@airmail.cc Your personal ID: 0675JOsie

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\505d6234031672419cf4e94a32117b35a5f95c45cffc1f295c53da13a7b26208.exe
    "C:\Users\Admin\AppData\Local\Temp\505d6234031672419cf4e94a32117b35a5f95c45cffc1f295c53da13a7b26208.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1612
    • C:\Users\Admin\AppData\Local\Temp\505d6234031672419cf4e94a32117b35a5f95c45cffc1f295c53da13a7b26208.exe
      "C:\Users\Admin\AppData\Local\Temp\505d6234031672419cf4e94a32117b35a5f95c45cffc1f295c53da13a7b26208.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2584
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\bbb854c8-d063-47b9-973b-6f5297933cd7" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4072
      • C:\Users\Admin\AppData\Local\Temp\505d6234031672419cf4e94a32117b35a5f95c45cffc1f295c53da13a7b26208.exe
        "C:\Users\Admin\AppData\Local\Temp\505d6234031672419cf4e94a32117b35a5f95c45cffc1f295c53da13a7b26208.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4940
        • C:\Users\Admin\AppData\Local\Temp\505d6234031672419cf4e94a32117b35a5f95c45cffc1f295c53da13a7b26208.exe
          "C:\Users\Admin\AppData\Local\Temp\505d6234031672419cf4e94a32117b35a5f95c45cffc1f295c53da13a7b26208.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2472
          • C:\Users\Admin\AppData\Local\3ec1dfab-9776-4ed8-b426-0ecde2e135c4\build2.exe
            "C:\Users\Admin\AppData\Local\3ec1dfab-9776-4ed8-b426-0ecde2e135c4\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:972
            • C:\Users\Admin\AppData\Local\3ec1dfab-9776-4ed8-b426-0ecde2e135c4\build2.exe
              "C:\Users\Admin\AppData\Local\3ec1dfab-9776-4ed8-b426-0ecde2e135c4\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:1268
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1268 -s 1840
                7⤵
                • Program crash
                PID:380
          • C:\Users\Admin\AppData\Local\3ec1dfab-9776-4ed8-b426-0ecde2e135c4\build3.exe
            "C:\Users\Admin\AppData\Local\3ec1dfab-9776-4ed8-b426-0ecde2e135c4\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3096
            • 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:4112
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1268 -ip 1268
    1⤵
      PID:4984
    • 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:2848
      • 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:628

    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\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
      Filesize

      2KB

      MD5

      e5b1cc0ae5af6a8277d75cff4af2c5e8

      SHA1

      4768fff3d4bbe02f89683b4a0e7b15b24b54eb9f

      SHA256

      d950c0d748aae641d71b11cd1c519b289917c23bee1a2b6bc5c496fd8e5d4655

      SHA512

      57a4737deeefac0124d73b52525993fecbbebd21a556ece87f8e79e845e07f037abb5e49f7458e8a010935c6691f18fbb913d77ecfb2ba902067788c483ec3d7

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

      1KB

      MD5

      3adac03b181d7980568dda0da0efc9de

      SHA1

      a283c4c9bd26a65b8240d21708e57f5946778341

      SHA256

      24c4973ced938b77d9670ac79eb76cd52411b17ab59ec78ba14c1b433f342933

      SHA512

      6fbd2a32fc18606628ea56311764cd879a1196405dddd4d269ad6163b2ffdcf916786f1c0328f27ec089be5cb9b4ecb3542363f4dfb3df1c1b91a0e038b67241

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

      488B

      MD5

      93e9b84b6399b97a7f18718f89938380

      SHA1

      e1fde308018bd8f9ecf73a1c7729e39bfdaac3bf

      SHA256

      4d9ccd2690d8fd97af47fcebd46840858f6648683cae274fba4e6adc3360e996

      SHA512

      e18be97ad4f13b66dfab52049138ebeaf7eb28a274314fbcb991c9377a870be8aa2e95a619e68b06dc333e375505dcafbf756109204e3ec3f934c1771d5dc865

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

      482B

      MD5

      19c8b4c6e7308dfa74bc84f6dc9c0785

      SHA1

      2f6cfb3161a514dcdad1c90e67b01a4340f7242f

      SHA256

      13243d5565a12f5cffeef826f70539f8369a758135385ec43cfc0501c4075722

      SHA512

      0c537539423ab0feef37ca7b3b8d045ec63246692a9a3cf9194194177d8a91b7a87d0a12a942ce02ff45a8775d26408ad7094374e965ee58afbd343968ada4a8

    • C:\Users\Admin\AppData\Local\3ec1dfab-9776-4ed8-b426-0ecde2e135c4\build2.exe
      Filesize

      416KB

      MD5

      aa18968e6cfbdc382ada6a3ed2852085

      SHA1

      4a41fa1a182916d5790aa2071106b3441d64468d

      SHA256

      c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

      SHA512

      8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

    • C:\Users\Admin\AppData\Local\3ec1dfab-9776-4ed8-b426-0ecde2e135c4\build2.exe
      Filesize

      416KB

      MD5

      aa18968e6cfbdc382ada6a3ed2852085

      SHA1

      4a41fa1a182916d5790aa2071106b3441d64468d

      SHA256

      c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

      SHA512

      8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

    • C:\Users\Admin\AppData\Local\3ec1dfab-9776-4ed8-b426-0ecde2e135c4\build2.exe
      Filesize

      416KB

      MD5

      aa18968e6cfbdc382ada6a3ed2852085

      SHA1

      4a41fa1a182916d5790aa2071106b3441d64468d

      SHA256

      c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

      SHA512

      8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

    • C:\Users\Admin\AppData\Local\3ec1dfab-9776-4ed8-b426-0ecde2e135c4\build2.exe
      Filesize

      416KB

      MD5

      aa18968e6cfbdc382ada6a3ed2852085

      SHA1

      4a41fa1a182916d5790aa2071106b3441d64468d

      SHA256

      c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

      SHA512

      8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

    • C:\Users\Admin\AppData\Local\3ec1dfab-9776-4ed8-b426-0ecde2e135c4\build3.exe
      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\3ec1dfab-9776-4ed8-b426-0ecde2e135c4\build3.exe
      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\3ec1dfab-9776-4ed8-b426-0ecde2e135c4\build3.exe
      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\bbb854c8-d063-47b9-973b-6f5297933cd7\505d6234031672419cf4e94a32117b35a5f95c45cffc1f295c53da13a7b26208.exe
      Filesize

      803KB

      MD5

      8e881779fbc7b6a2b77539364ce54a2e

      SHA1

      081c960aafe1b06f521b784fb04493291a60b36a

      SHA256

      505d6234031672419cf4e94a32117b35a5f95c45cffc1f295c53da13a7b26208

      SHA512

      ade2c2ed6fdc04fda98bbf88a6ba7666e0f621b5b81e0bb5e912cae1390a7972159a813e517141783d0c718e21655a8914983c2b1a307d9f694041ee7155ba8a

    • 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/972-182-0x0000000002D10000-0x0000000002D67000-memory.dmp
      Filesize

      348KB

    • memory/1268-205-0x0000000061E00000-0x0000000061EF3000-memory.dmp
      Filesize

      972KB

    • memory/1268-183-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/1268-276-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/1268-274-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/1268-178-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/1268-180-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/1268-181-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/1612-134-0x0000000004A60000-0x0000000004B7B000-memory.dmp
      Filesize

      1.1MB

    • memory/2472-158-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2472-152-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2472-163-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2472-165-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2472-192-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2472-157-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2472-151-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2472-159-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2472-275-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2472-166-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2584-135-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2584-136-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2584-137-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2584-147-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2584-138-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB