Resubmissions

20/05/2023, 08:25

230520-kbrk3abc79 10

05/05/2023, 20:12

230505-yy2lfaeb3y 10

Analysis

  • max time kernel
    148s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/05/2023, 20:12

General

  • Target

    e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e.exe

  • Size

    819KB

  • MD5

    49c4afca6a0fefeac7c3b0b070d5ce9e

  • SHA1

    ffbf4e65c838b69d00d00224ab2639d1126ca848

  • SHA256

    e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e

  • SHA512

    d9f723e6d231016507469acb4feb4631c6b3c285a852c94d5416ac6b2867379333fa35c8f9e501db919bc0d68e34ba6a61c8f86618882aba96da37978cf848dd

  • SSDEEP

    12288:W4KUnjgijgV1SLusb41TFb/xkz73+z54EINxrKAwsTDaPdyS4+nj/gTn:KYjgicVAZ6r+H858NlApwKgz

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .sato

  • offline_id

    GdcTFG029NGZ36LGVnRuxctpZuCpnW1SW5kiOCt1

  • 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-iN0WoEcmv0 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: 0698Ikksje

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
  • Checks computer location settings 2 TTPs 3 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
  • 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\e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e.exe
    "C:\Users\Admin\AppData\Local\Temp\e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4004
    • C:\Users\Admin\AppData\Local\Temp\e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e.exe
      "C:\Users\Admin\AppData\Local\Temp\e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3608
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\c52d75cb-0144-4ccf-bb03-fad32d28f687" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4880
      • C:\Users\Admin\AppData\Local\Temp\e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e.exe
        "C:\Users\Admin\AppData\Local\Temp\e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3916
        • C:\Users\Admin\AppData\Local\Temp\e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e.exe
          "C:\Users\Admin\AppData\Local\Temp\e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3676
          • C:\Users\Admin\AppData\Local\a8891bd7-610e-4912-9f82-d256dc0a7845\build2.exe
            "C:\Users\Admin\AppData\Local\a8891bd7-610e-4912-9f82-d256dc0a7845\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4900
            • C:\Users\Admin\AppData\Local\a8891bd7-610e-4912-9f82-d256dc0a7845\build2.exe
              "C:\Users\Admin\AppData\Local\a8891bd7-610e-4912-9f82-d256dc0a7845\build2.exe"
              6⤵
              • Checks computer location settings
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:396
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\a8891bd7-610e-4912-9f82-d256dc0a7845\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:640
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4004
          • C:\Users\Admin\AppData\Local\a8891bd7-610e-4912-9f82-d256dc0a7845\build3.exe
            "C:\Users\Admin\AppData\Local\a8891bd7-610e-4912-9f82-d256dc0a7845\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:5020
            • 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:3884
  • 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:744
    • 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:4140

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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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

    4245787a3883497201cedccb2894c6e5

    SHA1

    b0e151beb359f2e5545d07d8b6904d42aa2d3210

    SHA256

    5c9455eab43d4bafa996234ab1ea8ee5a392104843c80f0ffee1771a8c5133b2

    SHA512

    a6f053dc4ceb96b6901ea5abf5a14f26d70497195a33fbc7a29ddfb94af7ab330113e6b0b92c9b87bd482502cd06bff37cf76f2409f1c8f5f625d4f493943fab

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

    Filesize

    1KB

    MD5

    ee31c4960c310737fe6e51a579a8424e

    SHA1

    6f478757169e533f1dedddb2a7261322d6792e7d

    SHA256

    f364ed414502e892cda8dc3b72ec7b35e2f0b7ea0bb092287349d32a3a988942

    SHA512

    488bfd25d6b68709c77abb595248ef1a64b163dad2292603035e2f5dd572f9f3bbd75216063ae01fb001dd82a59463499d2aee3eea659583dbf8c047702ca0d7

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

    Filesize

    488B

    MD5

    c3088411e4da6f8f1001560390e74a75

    SHA1

    87fee464298b9438794832dd93de00f1860b7a42

    SHA256

    3d06da1bf4ddfed559150ad44bbb6a7d229c8712017425298e84cde7186f8f18

    SHA512

    1875a2c30ad54acc630d8e391c78eed48a2bb4cdc8a789220eb5f5e3000b0644a51ac410c15df17783004789da9ddd69dd04d9145e465c8b8643d92fc8e1b8f0

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

    Filesize

    482B

    MD5

    970e986cb85595a449a970cb78a65f49

    SHA1

    c6ae7af17a0e742ce9dc1a2b0e7fcf60d54a1bab

    SHA256

    f3b9bfaac6016cb0989b1005955595e522a3845cd6593a4d93ee5a90dec436f0

    SHA512

    918420c65c0d35e5116a49b66495474f14cbb9d12b33261a68e22077abe1578739bd7cce7a52d3936b28d70f46c8a7e22dcb7f8c0a4218d345692c5a880e49bf

  • C:\Users\Admin\AppData\Local\a8891bd7-610e-4912-9f82-d256dc0a7845\build2.exe

    Filesize

    406KB

    MD5

    a5293cb8841eb96b8a6618f1e11cb730

    SHA1

    db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

    SHA256

    810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

    SHA512

    b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

  • C:\Users\Admin\AppData\Local\a8891bd7-610e-4912-9f82-d256dc0a7845\build2.exe

    Filesize

    406KB

    MD5

    a5293cb8841eb96b8a6618f1e11cb730

    SHA1

    db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

    SHA256

    810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

    SHA512

    b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

  • C:\Users\Admin\AppData\Local\a8891bd7-610e-4912-9f82-d256dc0a7845\build2.exe

    Filesize

    406KB

    MD5

    a5293cb8841eb96b8a6618f1e11cb730

    SHA1

    db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

    SHA256

    810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

    SHA512

    b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

  • C:\Users\Admin\AppData\Local\a8891bd7-610e-4912-9f82-d256dc0a7845\build2.exe

    Filesize

    406KB

    MD5

    a5293cb8841eb96b8a6618f1e11cb730

    SHA1

    db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

    SHA256

    810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

    SHA512

    b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

  • C:\Users\Admin\AppData\Local\a8891bd7-610e-4912-9f82-d256dc0a7845\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\a8891bd7-610e-4912-9f82-d256dc0a7845\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\a8891bd7-610e-4912-9f82-d256dc0a7845\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\c52d75cb-0144-4ccf-bb03-fad32d28f687\e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e.exe

    Filesize

    819KB

    MD5

    49c4afca6a0fefeac7c3b0b070d5ce9e

    SHA1

    ffbf4e65c838b69d00d00224ab2639d1126ca848

    SHA256

    e5b4706b122d25bb5f950500705d11c184be12e58ea5a6921f50b3a1711e947e

    SHA512

    d9f723e6d231016507469acb4feb4631c6b3c285a852c94d5416ac6b2867379333fa35c8f9e501db919bc0d68e34ba6a61c8f86618882aba96da37978cf848dd

  • 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/396-251-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/396-250-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/396-208-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/396-198-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/396-252-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/396-193-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/396-197-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/396-195-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3608-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3608-134-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3608-135-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3608-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3608-149-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3676-161-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3676-188-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3676-168-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3676-167-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3676-165-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3676-153-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3676-160-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3676-254-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3676-155-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3676-154-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4004-172-0x0000000002600000-0x000000000271B000-memory.dmp

    Filesize

    1.1MB

  • memory/4004-136-0x0000000002600000-0x000000000271B000-memory.dmp

    Filesize

    1.1MB

  • memory/4900-196-0x0000000000BD0000-0x0000000000C2D000-memory.dmp

    Filesize

    372KB