Analysis

  • max time kernel
    145s
  • max time network
    141s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    01-04-2023 08:28

General

  • Target

    8e3ef14be5c7a48e3e695c00ff6cb933be93de58b3bbe04cca97e04c43e383cc.exe

  • Size

    741KB

  • MD5

    9aaf3396c6ff82a1dd5e60a59b8a9019

  • SHA1

    7de05682ecf0e2607fbed7f18e212afdcfff045b

  • SHA256

    8e3ef14be5c7a48e3e695c00ff6cb933be93de58b3bbe04cca97e04c43e383cc

  • SHA512

    2c2329631476f9a9742771373c65bf1004e3ed5fe4251383efd97beeb354f87a667d9c3bf213a93c9ea14beb5ea47c00bfc8ded0ff6937dd1924f354901986d8

  • SSDEEP

    12288:QsuqDG9OQsOIwEVtBGx0O3MdkBtmNI3Bit6qEno496Ed/MvbI2R5G:r69O+IwU0x0O3MU8t6g496E9khG

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 15 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). Likely ransomware behaviour.

  • 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\8e3ef14be5c7a48e3e695c00ff6cb933be93de58b3bbe04cca97e04c43e383cc.exe
    "C:\Users\Admin\AppData\Local\Temp\8e3ef14be5c7a48e3e695c00ff6cb933be93de58b3bbe04cca97e04c43e383cc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3488
    • C:\Users\Admin\AppData\Local\Temp\8e3ef14be5c7a48e3e695c00ff6cb933be93de58b3bbe04cca97e04c43e383cc.exe
      "C:\Users\Admin\AppData\Local\Temp\8e3ef14be5c7a48e3e695c00ff6cb933be93de58b3bbe04cca97e04c43e383cc.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:364
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\e50131b1-50b3-4c90-b216-bb99482f4b29" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4036
      • C:\Users\Admin\AppData\Local\Temp\8e3ef14be5c7a48e3e695c00ff6cb933be93de58b3bbe04cca97e04c43e383cc.exe
        "C:\Users\Admin\AppData\Local\Temp\8e3ef14be5c7a48e3e695c00ff6cb933be93de58b3bbe04cca97e04c43e383cc.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2788
        • C:\Users\Admin\AppData\Local\Temp\8e3ef14be5c7a48e3e695c00ff6cb933be93de58b3bbe04cca97e04c43e383cc.exe
          "C:\Users\Admin\AppData\Local\Temp\8e3ef14be5c7a48e3e695c00ff6cb933be93de58b3bbe04cca97e04c43e383cc.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:432
          • C:\Users\Admin\AppData\Local\665e4910-afd3-471d-a154-35ce7f851e48\build2.exe
            "C:\Users\Admin\AppData\Local\665e4910-afd3-471d-a154-35ce7f851e48\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4804
            • C:\Users\Admin\AppData\Local\665e4910-afd3-471d-a154-35ce7f851e48\build2.exe
              "C:\Users\Admin\AppData\Local\665e4910-afd3-471d-a154-35ce7f851e48\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:3700
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\665e4910-afd3-471d-a154-35ce7f851e48\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:4880
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4844
          • C:\Users\Admin\AppData\Local\665e4910-afd3-471d-a154-35ce7f851e48\build3.exe
            "C:\Users\Admin\AppData\Local\665e4910-afd3-471d-a154-35ce7f851e48\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4724
            • 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:5024
    • 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:3000

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • 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

    6a3353547369548f8579e645ccaf1c2f

    SHA1

    5833caf271e4670a907f99feaed70fe20e508a88

    SHA256

    962dcfa98309104040dd0d6df622563d9e490221dd2575eb214fa091b0525b90

    SHA512

    20a8acf98b6b45aee2679ff3ae44d232476bbd8f140989a0fd3d0cb5c71527a3f3715ab2a320131456bcc9445fe17c5b5f2be530bcf0806895d8fdbc91e0cff2

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

    Filesize

    482B

    MD5

    cdd5bc6e66783ee50da6dbd6c1d76183

    SHA1

    ec78b313ab2ba0859fef37ed2175dee99ff04170

    SHA256

    94824261400bca71e1b866ff6de09d55f054174c6f1f64644a1bdc2c370d5f5b

    SHA512

    bf942078bf94fb8cf55fee6c1039ccbc5177af84ffcf268252aec06f28203bdd378ab6bdaf70c447ac6679a50a5ac01e3b16bb5e24f61d98c929dae4187df6e7

  • C:\Users\Admin\AppData\Local\665e4910-afd3-471d-a154-35ce7f851e48\build2.exe

    Filesize

    416KB

    MD5

    aa18968e6cfbdc382ada6a3ed2852085

    SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

    SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

    SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • C:\Users\Admin\AppData\Local\665e4910-afd3-471d-a154-35ce7f851e48\build2.exe

    Filesize

    416KB

    MD5

    aa18968e6cfbdc382ada6a3ed2852085

    SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

    SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

    SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • C:\Users\Admin\AppData\Local\665e4910-afd3-471d-a154-35ce7f851e48\build2.exe

    Filesize

    416KB

    MD5

    aa18968e6cfbdc382ada6a3ed2852085

    SHA1

    4a41fa1a182916d5790aa2071106b3441d64468d

    SHA256

    c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb

    SHA512

    8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845

  • C:\Users\Admin\AppData\Local\665e4910-afd3-471d-a154-35ce7f851e48\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\665e4910-afd3-471d-a154-35ce7f851e48\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\e50131b1-50b3-4c90-b216-bb99482f4b29\8e3ef14be5c7a48e3e695c00ff6cb933be93de58b3bbe04cca97e04c43e383cc.exe

    Filesize

    741KB

    MD5

    9aaf3396c6ff82a1dd5e60a59b8a9019

    SHA1

    7de05682ecf0e2607fbed7f18e212afdcfff045b

    SHA256

    8e3ef14be5c7a48e3e695c00ff6cb933be93de58b3bbe04cca97e04c43e383cc

    SHA512

    2c2329631476f9a9742771373c65bf1004e3ed5fe4251383efd97beeb354f87a667d9c3bf213a93c9ea14beb5ea47c00bfc8ded0ff6937dd1924f354901986d8

  • 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/364-121-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/364-135-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/364-124-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/364-120-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/364-123-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/432-153-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/432-140-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/432-162-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/432-139-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/432-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/432-146-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/432-151-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/432-154-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/432-176-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3488-122-0x0000000004B20000-0x0000000004C3B000-memory.dmp

    Filesize

    1.1MB

  • memory/3700-189-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/3700-164-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/3700-169-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/3700-168-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/3700-166-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/3700-242-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/3700-246-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/3700-247-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/3700-248-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/3700-249-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4804-167-0x0000000002CF0000-0x0000000002D47000-memory.dmp

    Filesize

    348KB