Analysis

  • max time kernel
    91s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-11-2022 10:56

General

  • Target

    242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe

  • Size

    789KB

  • MD5

    2edfe3bc031c5cc9cc5bdf18aa7c3a02

  • SHA1

    b557b50822a2d788b410ead1e005197a0a4130d7

  • SHA256

    242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf

  • SHA512

    ef5e6255424a2fc58a0a8ffc44021b6d7c6f0e5f72644758d978ebeee0ebd3dff11e2b379cefa47573225f095a9225ce1c4e9b5d6cb79e79c534a9bcda9d690f

  • SSDEEP

    12288:rpZFyOlgXSpOFtqmtubiMwmE14D8wREaupmiMWqrItCDyMOqPjw:ly6gXfFtHYiMnE1CREaYmHWTrv

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 9 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 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.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe
    "C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1952
    • C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe
      "C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4560
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\807e857b-8d5b-47d2-a00c-bbddc86d014f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1976
      • C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe
        "C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2084
        • C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe
          "C:\Users\Admin\AppData\Local\Temp\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4984
          • C:\Users\Admin\AppData\Local\e7b4bae1-cb2e-450e-bc8e-d8087d148968\build2.exe
            "C:\Users\Admin\AppData\Local\e7b4bae1-cb2e-450e-bc8e-d8087d148968\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4576
            • C:\Users\Admin\AppData\Local\e7b4bae1-cb2e-450e-bc8e-d8087d148968\build2.exe
              "C:\Users\Admin\AppData\Local\e7b4bae1-cb2e-450e-bc8e-d8087d148968\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:1388
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\e7b4bae1-cb2e-450e-bc8e-d8087d148968\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:1472
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:1688

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

    346aac76a020665c2217a9e193b8cf4c

    SHA1

    0540f0e374fea5f72aa30690cb326e02f6a4b9ff

    SHA256

    e9a25b31050dd90b9d1d5410f6c740985d790dfaeefce85b6582d34a8fb8d7d8

    SHA512

    9f3f61a9448c6201987e807918cd37b3ed914e7b110e7f55031fd5f8c7c00ed31bf06e82ae6f00d3283eb964313d3bb20f4c70f16246b19120bb759c3629ea20

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

    Filesize

    482B

    MD5

    565cbcccdd066b4e1954acda5ccebf35

    SHA1

    af02777a32e68edd7fc8b03c4bc8f2cf4e8c5688

    SHA256

    9f28b70e58d9acdd588e1031e7fdac6b3ae401f7799e97b34b0387f3c832d8b4

    SHA512

    32013398902a1bc19cd69b42ae4ec032896b099b3a54dbfdbd7c28a704196947ecbfb560e0d2040554961a9de863d008381197c350b1173ce0170b5c5d09989e

  • C:\Users\Admin\AppData\Local\807e857b-8d5b-47d2-a00c-bbddc86d014f\242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf.exe

    Filesize

    789KB

    MD5

    2edfe3bc031c5cc9cc5bdf18aa7c3a02

    SHA1

    b557b50822a2d788b410ead1e005197a0a4130d7

    SHA256

    242a6c5409af9b1b1616d4f647446a84aeb123dec7fce58c383ec10d62cf9bcf

    SHA512

    ef5e6255424a2fc58a0a8ffc44021b6d7c6f0e5f72644758d978ebeee0ebd3dff11e2b379cefa47573225f095a9225ce1c4e9b5d6cb79e79c534a9bcda9d690f

  • C:\Users\Admin\AppData\Local\e7b4bae1-cb2e-450e-bc8e-d8087d148968\build2.exe

    Filesize

    323KB

    MD5

    efcd4db108fc262b0fba4f82692bfdf1

    SHA1

    5cc11f23b251c802e2e5497cc40d5702853e4f16

    SHA256

    1aacaadce5954ff321f06df9cf1785902ef0b1806599b8b0aa477ae211ff2976

    SHA512

    6c6cfe51f2686d26477934efe52a861c5a7bbd1baa4edac087c49058bca51d43b5be1214e22761ae63e98cd3e78c8aef51571835ac8e009cdc70c56439f2d15e

  • C:\Users\Admin\AppData\Local\e7b4bae1-cb2e-450e-bc8e-d8087d148968\build2.exe

    Filesize

    323KB

    MD5

    efcd4db108fc262b0fba4f82692bfdf1

    SHA1

    5cc11f23b251c802e2e5497cc40d5702853e4f16

    SHA256

    1aacaadce5954ff321f06df9cf1785902ef0b1806599b8b0aa477ae211ff2976

    SHA512

    6c6cfe51f2686d26477934efe52a861c5a7bbd1baa4edac087c49058bca51d43b5be1214e22761ae63e98cd3e78c8aef51571835ac8e009cdc70c56439f2d15e

  • C:\Users\Admin\AppData\Local\e7b4bae1-cb2e-450e-bc8e-d8087d148968\build2.exe

    Filesize

    323KB

    MD5

    efcd4db108fc262b0fba4f82692bfdf1

    SHA1

    5cc11f23b251c802e2e5497cc40d5702853e4f16

    SHA256

    1aacaadce5954ff321f06df9cf1785902ef0b1806599b8b0aa477ae211ff2976

    SHA512

    6c6cfe51f2686d26477934efe52a861c5a7bbd1baa4edac087c49058bca51d43b5be1214e22761ae63e98cd3e78c8aef51571835ac8e009cdc70c56439f2d15e

  • memory/1388-160-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/1388-163-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/1388-168-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/1388-159-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/1388-157-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/1952-132-0x0000000002E14000-0x0000000002EA5000-memory.dmp

    Filesize

    580KB

  • memory/1952-133-0x0000000004A70000-0x0000000004B8B000-memory.dmp

    Filesize

    1.1MB

  • memory/2084-146-0x0000000002E9D000-0x0000000002F2E000-memory.dmp

    Filesize

    580KB

  • memory/4560-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4560-136-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4560-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4560-135-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4560-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4576-161-0x00000000007E8000-0x0000000000815000-memory.dmp

    Filesize

    180KB

  • memory/4576-162-0x0000000000760000-0x00000000007B9000-memory.dmp

    Filesize

    356KB

  • memory/4984-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4984-145-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4984-152-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB