Analysis

  • max time kernel
    65s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-11-2022 14:10

General

  • Target

    1f81cb9bfb310048a11ee5c309ce7cdc9f6cfdd334b917830b2a9a78e5786294.exe

  • Size

    838KB

  • MD5

    693c542541c092a2919a76016021f7a5

  • SHA1

    4f655e256571b98b11e522f3cda3af6e158c9d9d

  • SHA256

    1f81cb9bfb310048a11ee5c309ce7cdc9f6cfdd334b917830b2a9a78e5786294

  • SHA512

    e28bef12d2b00e887833507b32bcdb5a7b46256608d519182d8ba6fa33329ca0fdcbfb27fd6636141063d25334055f0d2e7353b27356a2531c48c309c970a248

  • SSDEEP

    12288:fnhhTDJhDVtMqBhS36oZRk3FCR+c0X15x/qX9z1kxTeG7:vhhTDfDQqHS3RZKVEO/yz1oTe

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .bowd

  • offline_id

    oHp5e4SJxdFtxfvKYmeX06F4C5cn0EcsF5Ak9Wt1

  • payload_url

    http://uaery.top/dl/build2.exe

    http://fresherlights.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-dyi5UcwIT9 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: 0594Jhyjd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 10 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 3 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\1f81cb9bfb310048a11ee5c309ce7cdc9f6cfdd334b917830b2a9a78e5786294.exe
    "C:\Users\Admin\AppData\Local\Temp\1f81cb9bfb310048a11ee5c309ce7cdc9f6cfdd334b917830b2a9a78e5786294.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4344
    • C:\Users\Admin\AppData\Local\Temp\1f81cb9bfb310048a11ee5c309ce7cdc9f6cfdd334b917830b2a9a78e5786294.exe
      "C:\Users\Admin\AppData\Local\Temp\1f81cb9bfb310048a11ee5c309ce7cdc9f6cfdd334b917830b2a9a78e5786294.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5108
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\7ee2b31e-e72c-4ca4-863a-5c23e3a65947" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1956
      • C:\Users\Admin\AppData\Local\Temp\1f81cb9bfb310048a11ee5c309ce7cdc9f6cfdd334b917830b2a9a78e5786294.exe
        "C:\Users\Admin\AppData\Local\Temp\1f81cb9bfb310048a11ee5c309ce7cdc9f6cfdd334b917830b2a9a78e5786294.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2636
        • C:\Users\Admin\AppData\Local\Temp\1f81cb9bfb310048a11ee5c309ce7cdc9f6cfdd334b917830b2a9a78e5786294.exe
          "C:\Users\Admin\AppData\Local\Temp\1f81cb9bfb310048a11ee5c309ce7cdc9f6cfdd334b917830b2a9a78e5786294.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4032
          • C:\Users\Admin\AppData\Local\503e66f4-c98a-499f-80d9-b82fe6e1d861\build2.exe
            "C:\Users\Admin\AppData\Local\503e66f4-c98a-499f-80d9-b82fe6e1d861\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3716
            • C:\Users\Admin\AppData\Local\503e66f4-c98a-499f-80d9-b82fe6e1d861\build2.exe
              "C:\Users\Admin\AppData\Local\503e66f4-c98a-499f-80d9-b82fe6e1d861\build2.exe"
              6⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:3460
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\503e66f4-c98a-499f-80d9-b82fe6e1d861\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:4156
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4644
          • C:\Users\Admin\AppData\Local\503e66f4-c98a-499f-80d9-b82fe6e1d861\build3.exe
            "C:\Users\Admin\AppData\Local\503e66f4-c98a-499f-80d9-b82fe6e1d861\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1824
            • 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:4312
  • 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:972
    • 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:4592

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:\ProgramData\sqlite3.dll

    Filesize

    1.1MB

    MD5

    1f44d4d3087c2b202cf9c90ee9d04b0f

    SHA1

    106a3ebc9e39ab6ddb3ff987efb6527c956f192d

    SHA256

    4841020c8bd06b08fde6e44cbe2e2ab33439e1c8368e936ec5b00dc0584f7260

    SHA512

    b614c72a3c1ce681ebffa628e29aa50275cc80ca9267380960c5198ea4d0a3f2df6cfb7275491d220bad72f14fc94e6656501e9a061d102fb11e00cfda2beb45

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

    Filesize

    2KB

    MD5

    bf72e427cb37a9eea765a22bd913f4a9

    SHA1

    65472f30a9b5e73ab656b220200c08d80aa102f5

    SHA256

    0bb3634c75731c7e50568ec1b894ce832b3a3b42990909c2bb6230c34756b1cc

    SHA512

    681d5f0ef428c2dcb175ac1f4f1c6f944401fbee2eb5932973e47ab05f9a9c55fbbfa8dd6a57ec623cc6c759a743f4c532195eaf9561e6b1e536e7181bf9d140

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

    Filesize

    1KB

    MD5

    38bc9052d67fb7ff388671b512e76cb2

    SHA1

    097e30ab48d6130317a71cd53bd998c662d79171

    SHA256

    427acbd4b71e76709af64c7e94e63649ef51518d632afa3d24f06e5aebf95b9b

    SHA512

    a440c0983bbd454d421458d3203688b119bd56d7942fb6839868e183dcf9a838516aaa05295bf818149c39ce65509297ff8608241f62f82f289c35b17cc2043e

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

    Filesize

    488B

    MD5

    ba715623dbfdfba87a6f76fcd69893c3

    SHA1

    57148d087e0f89e5d4ccb23c6a01004e566792a4

    SHA256

    56885b72d6258c3ac5928be3700d72c5b776833cc8a63c2a928082c708ad03f8

    SHA512

    b154fa87c300c25366e3d1811dc42fc540f34b030e189832403c64474dd2449c4bf2d359d50508b609a31f9a98ea6ccf933349624b484c6ebfe431dfbd8002c3

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

    Filesize

    482B

    MD5

    675523ec86e1027916c8d7f7a4670a1c

    SHA1

    b7c89d55846c7ad52e1353f118ad613018ee4424

    SHA256

    6efc4b2cfba47ca0a9ce0d995adbdd9014ad073854d63fb500175a8c3b84e55f

    SHA512

    de5c3989e195ff026ac38bda2283076cb9fe7db72a9f94a9a5eb610039dd78425eed2773b7396e7790c860f26ccd7beab93e267a5a654bfaf4f24b4511810dde

  • C:\Users\Admin\AppData\Local\503e66f4-c98a-499f-80d9-b82fe6e1d861\build2.exe

    Filesize

    323KB

    MD5

    efcd4db108fc262b0fba4f82692bfdf1

    SHA1

    5cc11f23b251c802e2e5497cc40d5702853e4f16

    SHA256

    1aacaadce5954ff321f06df9cf1785902ef0b1806599b8b0aa477ae211ff2976

    SHA512

    6c6cfe51f2686d26477934efe52a861c5a7bbd1baa4edac087c49058bca51d43b5be1214e22761ae63e98cd3e78c8aef51571835ac8e009cdc70c56439f2d15e

  • C:\Users\Admin\AppData\Local\503e66f4-c98a-499f-80d9-b82fe6e1d861\build2.exe

    Filesize

    323KB

    MD5

    efcd4db108fc262b0fba4f82692bfdf1

    SHA1

    5cc11f23b251c802e2e5497cc40d5702853e4f16

    SHA256

    1aacaadce5954ff321f06df9cf1785902ef0b1806599b8b0aa477ae211ff2976

    SHA512

    6c6cfe51f2686d26477934efe52a861c5a7bbd1baa4edac087c49058bca51d43b5be1214e22761ae63e98cd3e78c8aef51571835ac8e009cdc70c56439f2d15e

  • C:\Users\Admin\AppData\Local\503e66f4-c98a-499f-80d9-b82fe6e1d861\build2.exe

    Filesize

    323KB

    MD5

    efcd4db108fc262b0fba4f82692bfdf1

    SHA1

    5cc11f23b251c802e2e5497cc40d5702853e4f16

    SHA256

    1aacaadce5954ff321f06df9cf1785902ef0b1806599b8b0aa477ae211ff2976

    SHA512

    6c6cfe51f2686d26477934efe52a861c5a7bbd1baa4edac087c49058bca51d43b5be1214e22761ae63e98cd3e78c8aef51571835ac8e009cdc70c56439f2d15e

  • C:\Users\Admin\AppData\Local\503e66f4-c98a-499f-80d9-b82fe6e1d861\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\503e66f4-c98a-499f-80d9-b82fe6e1d861\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\7ee2b31e-e72c-4ca4-863a-5c23e3a65947\1f81cb9bfb310048a11ee5c309ce7cdc9f6cfdd334b917830b2a9a78e5786294.exe

    Filesize

    838KB

    MD5

    693c542541c092a2919a76016021f7a5

    SHA1

    4f655e256571b98b11e522f3cda3af6e158c9d9d

    SHA256

    1f81cb9bfb310048a11ee5c309ce7cdc9f6cfdd334b917830b2a9a78e5786294

    SHA512

    e28bef12d2b00e887833507b32bcdb5a7b46256608d519182d8ba6fa33329ca0fdcbfb27fd6636141063d25334055f0d2e7353b27356a2531c48c309c970a248

  • 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/2636-146-0x0000000002F47000-0x0000000002FD9000-memory.dmp

    Filesize

    584KB

  • memory/3460-173-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/3460-163-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/3460-159-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/3460-160-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/3460-157-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/3716-161-0x0000000000878000-0x00000000008A5000-memory.dmp

    Filesize

    180KB

  • memory/3716-162-0x0000000002200000-0x0000000002259000-memory.dmp

    Filesize

    356KB

  • memory/4032-171-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4032-152-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4032-145-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4032-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4344-136-0x00000000049E0000-0x0000000004AFB000-memory.dmp

    Filesize

    1.1MB

  • memory/4344-135-0x0000000002E2D000-0x0000000002EBF000-memory.dmp

    Filesize

    584KB

  • memory/5108-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5108-133-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5108-134-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5108-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5108-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB