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Analysis

  • max time kernel
    149s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    13/01/2024, 01:07

General

  • Target

    14a5973627a876bdbafb029a26084f64.exe

  • Size

    817KB

  • MD5

    14a5973627a876bdbafb029a26084f64

  • SHA1

    5514e9a9d8806406ff9921c9be25bd1e314b0b9b

  • SHA256

    bd2b3bc973155b2f6b0866245d933619550d127f292cb912e9cea106fb8392a5

  • SHA512

    e6cefb5181f6bfef6c17afc961e5d8186115ce01e06160a4c08b88933f314f9e64010c04936e2511af543e49218fc4186bc59239e5d4254b10b3d517ca644808

  • SSDEEP

    12288:zesZm5MEXDLUudx8Qp5+C6+gNfGtQaUkyUExxald2R6I6RR1nPK6AuVW:E5MOeQp5NgNfTkyUExxalYQNjZP0uVW

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .cdpo

  • offline_id

    Bn3q97hwLouKbhkQRNO4SeV07gjdEQVm8NKhg0t1

  • payload_url

    http://brusuax.com/dl/build2.exe

    http://habrafa.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-FCWSCsjEWS Price of private key and decrypt software is $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. 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: 0844OSkw

rsa_pubkey.plain

Signatures

  • Detect Vidar Stealer 5 IoCs
  • 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 2 IoCs
  • Loads dropped DLL 6 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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).

  • Program crash 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\14a5973627a876bdbafb029a26084f64.exe
    "C:\Users\Admin\AppData\Local\Temp\14a5973627a876bdbafb029a26084f64.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1748
    • C:\Users\Admin\AppData\Local\Temp\14a5973627a876bdbafb029a26084f64.exe
      "C:\Users\Admin\AppData\Local\Temp\14a5973627a876bdbafb029a26084f64.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2392
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\d7a51705-0504-446f-8056-d85f7ee2f3ed" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2828
      • C:\Users\Admin\AppData\Local\Temp\14a5973627a876bdbafb029a26084f64.exe
        "C:\Users\Admin\AppData\Local\Temp\14a5973627a876bdbafb029a26084f64.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2572
        • C:\Users\Admin\AppData\Local\Temp\14a5973627a876bdbafb029a26084f64.exe
          "C:\Users\Admin\AppData\Local\Temp\14a5973627a876bdbafb029a26084f64.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:576
          • C:\Users\Admin\AppData\Local\acba2adc-bf3a-49f9-87c5-c3fe3f22de15\build2.exe
            "C:\Users\Admin\AppData\Local\acba2adc-bf3a-49f9-87c5-c3fe3f22de15\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2504
            • C:\Users\Admin\AppData\Local\acba2adc-bf3a-49f9-87c5-c3fe3f22de15\build2.exe
              "C:\Users\Admin\AppData\Local\acba2adc-bf3a-49f9-87c5-c3fe3f22de15\build2.exe"
              6⤵
              • Executes dropped EXE
              • Modifies system certificate store
              • Suspicious use of WriteProcessMemory
              PID:1756
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1756 -s 1448
                7⤵
                • Loads dropped DLL
                • Program crash
                PID:2584

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    1KB

    MD5

    1a5a4d4587426c60f5430f7d8dd2f3a4

    SHA1

    e13512e746665b5da9cf6c19e36b2651edfbbb05

    SHA256

    5ef8b74df59ad2233b8d40cea334c416975a910ea76892cb3946016a5602aa73

    SHA512

    7c0d45af1577fea5649db6050195dbd5f129e2a0503171f02ccc5053f443ff294f2fd413070e613b30a80461bd88a24d77f769b4f76fb96552e79485a2bc7bcb

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

    Filesize

    724B

    MD5

    8202a1cd02e7d69597995cabbe881a12

    SHA1

    8858d9d934b7aa9330ee73de6c476acf19929ff6

    SHA256

    58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

    SHA512

    97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    1KB

    MD5

    a266bb7dcc38a562631361bbf61dd11b

    SHA1

    3b1efd3a66ea28b16697394703a72ca340a05bd5

    SHA256

    df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

    SHA512

    0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    410B

    MD5

    0bf89d64a81799bf827e54b230afba3b

    SHA1

    1eea2ea8ee4138813fa1abfd1b8be58a69a8794c

    SHA256

    17a82df09ba9a51603de0c8e9c28ca560d9ed57b59b9b62e6a4ee37cd1b79774

    SHA512

    e8a1f4f73baef758771eb064e5eddc536846b68a55421d6ae313cad35a952ee0e6be57e777497155723fbe133966fe848f09f670b0767071e7128821e99215e1

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    344B

    MD5

    9c9127344517b49f18ec1c8a54945fae

    SHA1

    f6fcd718409e63ad8814a3df207086b45c2e6fdc

    SHA256

    cb164655b1ec7237357f608786f4841393e709ef00db8e8d70f4ceb93c676c5d

    SHA512

    1ed151812ef5bce72e191999462fcfbe2f42bed7ed2c4aa6963f3614621d5ef110225acb0901e2507857ee9736e89ddf3519caf16c28c7c9414be6afed0bf243

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

    Filesize

    392B

    MD5

    382a2c1ee5fa47fede78ab42d3a40839

    SHA1

    8f4aaf96b04eeb72440cfa757602a2a867fddfb4

    SHA256

    5b9d100c525cfbc040b5b7c8bd691624a8ea5f9bd0b01433331d38b2327b0433

    SHA512

    c9a1677942505d187012656b80e4d63b5f98a69f32de6743af91d924d54812f9962c5d7baf698dcb1bf96d2a99740b70c19ad9760ec8bf795c4a0519f0e4a364

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    242B

    MD5

    82e6275b47c079530f9261ccd6164717

    SHA1

    1df1feb483a2483a32ff71e00dabde19b1c471fb

    SHA256

    bd95a1359164c946d6a17adba3f0df9a765144ebf4a8c71b3c39b52b609dfc7b

    SHA512

    b95188bda859654e72db5451b4ff92e3c4e7367526eb553c8d538f96822ee0796676114814c55e4d90935017196da729482ac577bca1db8c2b9d235d5104a4ac

  • C:\Users\Admin\AppData\Local\Temp\CabE4F2.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar5CC1.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • C:\Users\Admin\AppData\Local\d7a51705-0504-446f-8056-d85f7ee2f3ed\14a5973627a876bdbafb029a26084f64.exe

    Filesize

    817KB

    MD5

    14a5973627a876bdbafb029a26084f64

    SHA1

    5514e9a9d8806406ff9921c9be25bd1e314b0b9b

    SHA256

    bd2b3bc973155b2f6b0866245d933619550d127f292cb912e9cea106fb8392a5

    SHA512

    e6cefb5181f6bfef6c17afc961e5d8186115ce01e06160a4c08b88933f314f9e64010c04936e2511af543e49218fc4186bc59239e5d4254b10b3d517ca644808

  • \Users\Admin\AppData\Local\acba2adc-bf3a-49f9-87c5-c3fe3f22de15\build2.exe

    Filesize

    358KB

    MD5

    c4070da9f9b0581171af16e681ccdff8

    SHA1

    3fb4182921fdc3acd7873ebe113ac5522585312a

    SHA256

    26063c78e5418610471a9f3a00a155d7d1e5b29856e1979ba3bdc42681a871d0

    SHA512

    c7569cea7f1a841e7cac9cd41287dba3bcacf2cf9dee7bece88800848a7ad5dc4cd2bdc896c7389f0f1144079bbe168048b3f722bcd76fa5d6e14f3081bb6427

  • memory/576-254-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/576-57-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/576-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/576-58-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/576-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/576-56-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/576-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/576-50-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/576-49-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1748-1-0x0000000000250000-0x00000000002E2000-memory.dmp

    Filesize

    584KB

  • memory/1748-3-0x0000000002110000-0x000000000222B000-memory.dmp

    Filesize

    1.1MB

  • memory/1748-7-0x0000000000250000-0x00000000002E2000-memory.dmp

    Filesize

    584KB

  • memory/1748-0-0x0000000000250000-0x00000000002E2000-memory.dmp

    Filesize

    584KB

  • memory/1756-83-0x0000000000400000-0x000000000065E000-memory.dmp

    Filesize

    2.4MB

  • memory/1756-74-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1756-242-0x0000000000400000-0x000000000065E000-memory.dmp

    Filesize

    2.4MB

  • memory/1756-81-0x0000000000400000-0x000000000065E000-memory.dmp

    Filesize

    2.4MB

  • memory/1756-78-0x0000000000400000-0x000000000065E000-memory.dmp

    Filesize

    2.4MB

  • memory/2392-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2392-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2392-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2392-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2392-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2504-75-0x0000000000620000-0x0000000000720000-memory.dmp

    Filesize

    1024KB

  • memory/2504-76-0x0000000000230000-0x000000000027B000-memory.dmp

    Filesize

    300KB

  • memory/2572-30-0x0000000000290000-0x0000000000322000-memory.dmp

    Filesize

    584KB

  • memory/2572-29-0x0000000000290000-0x0000000000322000-memory.dmp

    Filesize

    584KB