Analysis

  • max time kernel
    145s
  • max time network
    149s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    02/05/2023, 15:37

General

  • Target

    f43cc655a889138dedba28cf4b0a67f7876970d142a0b2cec65ea0a51785d3c1.exe

  • Size

    741KB

  • MD5

    d468f482836432a01d0d742fa60b2bf2

  • SHA1

    49a4aef3c55b7ef828299d85797c0555da8c984b

  • SHA256

    f43cc655a889138dedba28cf4b0a67f7876970d142a0b2cec65ea0a51785d3c1

  • SHA512

    5f6e70bb5342b62c37e3e6d9a0dc3b30321f74302029e671a7a9a8229bdb67bc957b2e73466e9e4ef1a2ae824313c43aa66828f4800e5279522583f0d858b4e2

  • SSDEEP

    12288:I6ro7VZvZHHe7BRIsbmdD9f8tDZct32nbr8B31vSie+VrfN3Xixh:/EVz+1JmdDp6UGfGhe+Jftyx

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
  • 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).

  • 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\f43cc655a889138dedba28cf4b0a67f7876970d142a0b2cec65ea0a51785d3c1.exe
    "C:\Users\Admin\AppData\Local\Temp\f43cc655a889138dedba28cf4b0a67f7876970d142a0b2cec65ea0a51785d3c1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3480
    • C:\Users\Admin\AppData\Local\Temp\f43cc655a889138dedba28cf4b0a67f7876970d142a0b2cec65ea0a51785d3c1.exe
      "C:\Users\Admin\AppData\Local\Temp\f43cc655a889138dedba28cf4b0a67f7876970d142a0b2cec65ea0a51785d3c1.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1656
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\e5177ea4-ba14-44de-912d-1d6739e4b644" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1008
      • C:\Users\Admin\AppData\Local\Temp\f43cc655a889138dedba28cf4b0a67f7876970d142a0b2cec65ea0a51785d3c1.exe
        "C:\Users\Admin\AppData\Local\Temp\f43cc655a889138dedba28cf4b0a67f7876970d142a0b2cec65ea0a51785d3c1.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2088
        • C:\Users\Admin\AppData\Local\Temp\f43cc655a889138dedba28cf4b0a67f7876970d142a0b2cec65ea0a51785d3c1.exe
          "C:\Users\Admin\AppData\Local\Temp\f43cc655a889138dedba28cf4b0a67f7876970d142a0b2cec65ea0a51785d3c1.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2628
          • C:\Users\Admin\AppData\Local\5ee0793a-0640-4f5a-ae72-67f009b2bc71\build2.exe
            "C:\Users\Admin\AppData\Local\5ee0793a-0640-4f5a-ae72-67f009b2bc71\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4752
            • C:\Users\Admin\AppData\Local\5ee0793a-0640-4f5a-ae72-67f009b2bc71\build2.exe
              "C:\Users\Admin\AppData\Local\5ee0793a-0640-4f5a-ae72-67f009b2bc71\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:3656
          • C:\Users\Admin\AppData\Local\5ee0793a-0640-4f5a-ae72-67f009b2bc71\build3.exe
            "C:\Users\Admin\AppData\Local\5ee0793a-0640-4f5a-ae72-67f009b2bc71\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4896
            • 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:4396
  • 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:4800
    • 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

          36b32f71d28d108f03339dd73feefb0c

          SHA1

          3d6bc9812acf93e334a76d12c96e885b30d34ed5

          SHA256

          3b8912b841a445d296d076cc0501f5aa1e0fcc2bb83536d852bad743bd2034f7

          SHA512

          ff58a120655a2a79646faaf82c34d9aa39baa9a870af36867041bd82f24f666457616875bbb3356f12cfbfbd3cd8c64a8dbd70f55557c85a890f3b06d0e671da

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

          Filesize

          1KB

          MD5

          5145226ee965ec6c7814292caa016376

          SHA1

          599b6fa914c11bf8527397d65084c2de42aff73a

          SHA256

          5ee4ed22271e4b9da8d765374cd65b5015abc548748c746dbdddf6fdf680db5e

          SHA512

          f23363359d73e416b0c335e7f91128874242c6c98926d1e4d084173e2b94ba58844dec98d781a2d4f3c82420b3522f77bdceb613109a9c798330769080cdfc2d

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

          Filesize

          488B

          MD5

          05e4412b1a0a85f3e5f433b35e563a65

          SHA1

          706690e2996c68f597cbdd93d86dea1702baa467

          SHA256

          ac7633bd33c8f8da703f4f50438830bcfd9f47c305a7f0eea2957cf921906ee1

          SHA512

          831d2e8bad95d66cf6ce5a968a42352b3161906840a6b638fb3078fc3b124a83af99cd875e8415d4a657d81732f8f39678c2c04a88927f300e1a5a02c7c2c2f3

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

          Filesize

          482B

          MD5

          f8b19a79cbaf02b529b0a28fe5cdd9b3

          SHA1

          fd999b6a8d200e7af5d197017e3006b82c929be8

          SHA256

          ed8d00498a2a42286439512c8ac70c49d03d670f0474b445f099d67d4e7aa728

          SHA512

          1aeeff692cd9e9881bdecdfb280e282c43d45f0c4ba14085352cfe87e145e8e3de7b74766c8b35032412de647aa803850e6aac6e10603584765488ef9cf0697c

        • C:\Users\Admin\AppData\Local\5ee0793a-0640-4f5a-ae72-67f009b2bc71\build2.exe

          Filesize

          406KB

          MD5

          a5293cb8841eb96b8a6618f1e11cb730

          SHA1

          db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

          SHA256

          810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

          SHA512

          b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

        • C:\Users\Admin\AppData\Local\5ee0793a-0640-4f5a-ae72-67f009b2bc71\build2.exe

          Filesize

          406KB

          MD5

          a5293cb8841eb96b8a6618f1e11cb730

          SHA1

          db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

          SHA256

          810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

          SHA512

          b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

        • C:\Users\Admin\AppData\Local\5ee0793a-0640-4f5a-ae72-67f009b2bc71\build2.exe

          Filesize

          406KB

          MD5

          a5293cb8841eb96b8a6618f1e11cb730

          SHA1

          db640ebdfc3b98fe7a8223a44f4e997fa28cacc0

          SHA256

          810be76ae3ecc5ab7f019f91979ac9ebf76ed220a7b42c2254a21ec660f8289f

          SHA512

          b5cc44cc78250327cb23a45a3144c1c1ddbf89593f4946ae2f38c82c00a4d7057af0c5a8717572d4663967b072b302753f1751549eb758e9a520cf978ec187a6

        • C:\Users\Admin\AppData\Local\5ee0793a-0640-4f5a-ae72-67f009b2bc71\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\5ee0793a-0640-4f5a-ae72-67f009b2bc71\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\e5177ea4-ba14-44de-912d-1d6739e4b644\f43cc655a889138dedba28cf4b0a67f7876970d142a0b2cec65ea0a51785d3c1.exe

          Filesize

          741KB

          MD5

          d468f482836432a01d0d742fa60b2bf2

          SHA1

          49a4aef3c55b7ef828299d85797c0555da8c984b

          SHA256

          f43cc655a889138dedba28cf4b0a67f7876970d142a0b2cec65ea0a51785d3c1

          SHA512

          5f6e70bb5342b62c37e3e6d9a0dc3b30321f74302029e671a7a9a8229bdb67bc957b2e73466e9e4ef1a2ae824313c43aa66828f4800e5279522583f0d858b4e2

        • 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/1656-118-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1656-133-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1656-124-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1656-121-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1656-119-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2628-143-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2628-159-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2628-158-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2628-156-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2628-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2628-145-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2628-181-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2628-144-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2628-186-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2628-137-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3480-120-0x0000000002550000-0x000000000266B000-memory.dmp

          Filesize

          1.1MB

        • memory/3656-165-0x0000000000400000-0x0000000000471000-memory.dmp

          Filesize

          452KB

        • memory/3656-187-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/3656-166-0x0000000000400000-0x0000000000471000-memory.dmp

          Filesize

          452KB

        • memory/3656-163-0x0000000000400000-0x0000000000471000-memory.dmp

          Filesize

          452KB

        • memory/3656-229-0x0000000000400000-0x0000000000471000-memory.dmp

          Filesize

          452KB

        • memory/3656-161-0x0000000000400000-0x0000000000471000-memory.dmp

          Filesize

          452KB

        • memory/3656-245-0x0000000000400000-0x0000000000471000-memory.dmp

          Filesize

          452KB

        • memory/3656-246-0x0000000000400000-0x0000000000471000-memory.dmp

          Filesize

          452KB

        • memory/3656-247-0x0000000000400000-0x0000000000471000-memory.dmp

          Filesize

          452KB

        • memory/3656-248-0x0000000000400000-0x0000000000471000-memory.dmp

          Filesize

          452KB

        • memory/4752-164-0x00000000026A0000-0x00000000026FD000-memory.dmp

          Filesize

          372KB