Analysis

  • max time kernel
    144s
  • max time network
    126s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    09/05/2023, 09:45

General

  • Target

    57becdcfa107676894ad15df51e0af1dbeafdd6c673e38124be7a6b9f5f6e0f8.exe

  • Size

    821KB

  • MD5

    6e337beda79a5115fcc7ccc96ec26221

  • SHA1

    4bacc08478383e383a13cb5de0547c05e7614921

  • SHA256

    57becdcfa107676894ad15df51e0af1dbeafdd6c673e38124be7a6b9f5f6e0f8

  • SHA512

    36114cbfbddd1bfe11024717090e389b9a66b84552d9ff8a54785b4f26d17c64619ed84bc345d02384c2dfb3fb98c32ac62c15748485e4c036119cca8de4bb8f

  • SSDEEP

    12288:wvpoQLyru4m32OLtSeZiTJGOhKb7IvwmtJ42x3mpm6hCspuTj9:wmQGYNLtSSgJry7AvBNmp/hCEG9

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .qopz

  • offline_id

    dp2XHHJytO0BDSHTEAkoGB97DSSLD0rheNyRBit1

  • payload_url

    http://colisumy.com/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-KOKbb3hd7U 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: 0702Sdeb

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.7

Botnet

31c7719b5ee962fbde376b75e771360d

C2

https://steamcommunity.com/profiles/76561199501059503

https://t.me/mastersbots

Attributes
  • profile_id_v2

    31c7719b5ee962fbde376b75e771360d

  • user_agent

    Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/112.0

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
  • 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
  • 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).

  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\57becdcfa107676894ad15df51e0af1dbeafdd6c673e38124be7a6b9f5f6e0f8.exe
    "C:\Users\Admin\AppData\Local\Temp\57becdcfa107676894ad15df51e0af1dbeafdd6c673e38124be7a6b9f5f6e0f8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2272
    • C:\Users\Admin\AppData\Local\Temp\57becdcfa107676894ad15df51e0af1dbeafdd6c673e38124be7a6b9f5f6e0f8.exe
      "C:\Users\Admin\AppData\Local\Temp\57becdcfa107676894ad15df51e0af1dbeafdd6c673e38124be7a6b9f5f6e0f8.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2412
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a11e7c20-6428-4dbf-9167-0fbad02e8a67" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:5052
      • C:\Users\Admin\AppData\Local\Temp\57becdcfa107676894ad15df51e0af1dbeafdd6c673e38124be7a6b9f5f6e0f8.exe
        "C:\Users\Admin\AppData\Local\Temp\57becdcfa107676894ad15df51e0af1dbeafdd6c673e38124be7a6b9f5f6e0f8.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3920
        • C:\Users\Admin\AppData\Local\Temp\57becdcfa107676894ad15df51e0af1dbeafdd6c673e38124be7a6b9f5f6e0f8.exe
          "C:\Users\Admin\AppData\Local\Temp\57becdcfa107676894ad15df51e0af1dbeafdd6c673e38124be7a6b9f5f6e0f8.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2808
          • C:\Users\Admin\AppData\Local\d86f3f09-eea1-4868-94c3-5318ebc39b9b\build2.exe
            "C:\Users\Admin\AppData\Local\d86f3f09-eea1-4868-94c3-5318ebc39b9b\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4740
            • C:\Users\Admin\AppData\Local\d86f3f09-eea1-4868-94c3-5318ebc39b9b\build2.exe
              "C:\Users\Admin\AppData\Local\d86f3f09-eea1-4868-94c3-5318ebc39b9b\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:1196
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\d86f3f09-eea1-4868-94c3-5318ebc39b9b\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:4312
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4296
          • C:\Users\Admin\AppData\Local\d86f3f09-eea1-4868-94c3-5318ebc39b9b\build3.exe
            "C:\Users\Admin\AppData\Local\d86f3f09-eea1-4868-94c3-5318ebc39b9b\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4704
            • 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:5096
  • 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:2080
    • 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:5108

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    2KB

    MD5

    3b6c78450b3d044a76e9015252c90aac

    SHA1

    525e9d99a5df0405e4eb5ea50fd4d4e66aaf60c5

    SHA256

    bc9358507c9c7db516ae450dbee02376af8966334dbe3509917699a3dec95166

    SHA512

    b123393160f4526fabe6bb616fd6f1e93887afeebdc42bbe669de9699d339b0937cdf2d8ebfa6449e5edae024495c76972d567fe38412f28a931be681c32f792

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

    Filesize

    1KB

    MD5

    f1adde827dde04174d35492bb8763595

    SHA1

    49fa8e0dfedea1378223f6b5ed06162a5368da0f

    SHA256

    c82d9e93d8698c85380cf00dd0abf6df4d51edb4db4ff7d4d657084a0ae83736

    SHA512

    07bc41e8505591477e68e1431c0621ffeaea331e6a7612ba3f9b1e3007247ee17da1e196f50207a670e8e4cedb03d705daabd08e2a04464a54124a75d73be227

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

    Filesize

    488B

    MD5

    b036a51d30705463169cb97f3aaacb2e

    SHA1

    7e3be5603855ebb0f3ec00d78a8069d51b3806a6

    SHA256

    19fc12ebfa008ea615c8dfde656de6d9a6ba1e121f590f4f4aae3c24922fa387

    SHA512

    5355757b9f63c04424dc3cfb8ca178c1bf22f438f18ade1e8a753d091edf5cfee7ee894a5d9676fa137d7204036cdbc944b1228e2d47dd35d71b9631d3af217b

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

    Filesize

    482B

    MD5

    797153b8f09598952df3747ec558bc5f

    SHA1

    2a2273efb078a541c5efc27b35d667ceed0d9cc9

    SHA256

    3afb174d5ffe9b69a83be9f76e1643d7b67745e5b14299a7b84edbdd73792185

    SHA512

    501eb776f5c4877f39a3885ca1978e91e6b0fffa38dc1507c1082947bf3d0b3ffeac9c49f27ce6b4e46dbe20f75e60ea748abdf9ad7e86a1c6d8246a69ea8fc3

  • C:\Users\Admin\AppData\Local\a11e7c20-6428-4dbf-9167-0fbad02e8a67\57becdcfa107676894ad15df51e0af1dbeafdd6c673e38124be7a6b9f5f6e0f8.exe

    Filesize

    821KB

    MD5

    6e337beda79a5115fcc7ccc96ec26221

    SHA1

    4bacc08478383e383a13cb5de0547c05e7614921

    SHA256

    57becdcfa107676894ad15df51e0af1dbeafdd6c673e38124be7a6b9f5f6e0f8

    SHA512

    36114cbfbddd1bfe11024717090e389b9a66b84552d9ff8a54785b4f26d17c64619ed84bc345d02384c2dfb3fb98c32ac62c15748485e4c036119cca8de4bb8f

  • C:\Users\Admin\AppData\Local\d86f3f09-eea1-4868-94c3-5318ebc39b9b\build2.exe

    Filesize

    406KB

    MD5

    a5293cb8841eb96b8a6618f1e11cb730

    SHA1

    db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

    SHA256

    810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

    SHA512

    b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

  • C:\Users\Admin\AppData\Local\d86f3f09-eea1-4868-94c3-5318ebc39b9b\build2.exe

    Filesize

    406KB

    MD5

    a5293cb8841eb96b8a6618f1e11cb730

    SHA1

    db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

    SHA256

    810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

    SHA512

    b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

  • C:\Users\Admin\AppData\Local\d86f3f09-eea1-4868-94c3-5318ebc39b9b\build2.exe

    Filesize

    406KB

    MD5

    a5293cb8841eb96b8a6618f1e11cb730

    SHA1

    db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

    SHA256

    810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

    SHA512

    b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

  • C:\Users\Admin\AppData\Local\d86f3f09-eea1-4868-94c3-5318ebc39b9b\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\d86f3f09-eea1-4868-94c3-5318ebc39b9b\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

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

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • \ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/1196-178-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/1196-172-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/1196-235-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/1196-234-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/1196-233-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/1196-195-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/1196-194-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/1196-170-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/2272-124-0x00000000025A0000-0x00000000026BB000-memory.dmp

    Filesize

    1.1MB

  • memory/2412-139-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2412-126-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2412-125-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2412-123-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2412-122-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2808-157-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2808-180-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2808-168-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2808-149-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2808-152-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2808-153-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2808-160-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2808-159-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2808-144-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2808-143-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4740-173-0x0000000002680000-0x00000000026DD000-memory.dmp

    Filesize

    372KB