Analysis

  • max time kernel
    296s
  • max time network
    300s
  • platform
    windows10-1703_x64
  • resource
    win10-20231220-en
  • resource tags

    arch:x64arch:x86image:win10-20231220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    15/01/2024, 04:51

General

  • Target

    50750495d27fc93afddfb07574ecad91245b3395e693a632d124196c91b1e9e4.exe

  • Size

    732KB

  • MD5

    af0965298074ef2eadb8f3d7d6e03128

  • SHA1

    7a5e64c5dde6174f92b3be9dee33f1edddf84e42

  • SHA256

    50750495d27fc93afddfb07574ecad91245b3395e693a632d124196c91b1e9e4

  • SHA512

    5d4d34637cfd131e901f34b6277f184c773d8f7cd2e274e9ea4bd3f20c33620c13f2ddb0e2b6257751311feace67484123b6bfe745eb2c3c3c92e17404ea3e6d

  • SSDEEP

    12288:vfPamBObYMcjyHjhtwutQAgD0ZrANrEpocfBVL/rxLpmieHITopjM:PamBOMLjAjhlEyrI6P7NpmiewgjM

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 17 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 13 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 8 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • 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 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\50750495d27fc93afddfb07574ecad91245b3395e693a632d124196c91b1e9e4.exe
    "C:\Users\Admin\AppData\Local\Temp\50750495d27fc93afddfb07574ecad91245b3395e693a632d124196c91b1e9e4.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2156
    • C:\Users\Admin\AppData\Local\Temp\50750495d27fc93afddfb07574ecad91245b3395e693a632d124196c91b1e9e4.exe
      "C:\Users\Admin\AppData\Local\Temp\50750495d27fc93afddfb07574ecad91245b3395e693a632d124196c91b1e9e4.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:796
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\6216d487-2582-49fc-b1b3-5f6ee91fa9b6" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4656
      • C:\Users\Admin\AppData\Local\Temp\50750495d27fc93afddfb07574ecad91245b3395e693a632d124196c91b1e9e4.exe
        "C:\Users\Admin\AppData\Local\Temp\50750495d27fc93afddfb07574ecad91245b3395e693a632d124196c91b1e9e4.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1780
  • C:\Users\Admin\AppData\Local\Temp\50750495d27fc93afddfb07574ecad91245b3395e693a632d124196c91b1e9e4.exe
    "C:\Users\Admin\AppData\Local\Temp\50750495d27fc93afddfb07574ecad91245b3395e693a632d124196c91b1e9e4.exe" --Admin IsNotAutoStart IsNotTask
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3044
    • C:\Users\Admin\AppData\Local\1943eebf-c9dc-4cdc-851d-75eff6b2162c\build2.exe
      "C:\Users\Admin\AppData\Local\1943eebf-c9dc-4cdc-851d-75eff6b2162c\build2.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2236
    • C:\Users\Admin\AppData\Local\1943eebf-c9dc-4cdc-851d-75eff6b2162c\build3.exe
      "C:\Users\Admin\AppData\Local\1943eebf-c9dc-4cdc-851d-75eff6b2162c\build3.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1992
      • C:\Users\Admin\AppData\Local\1943eebf-c9dc-4cdc-851d-75eff6b2162c\build3.exe
        "C:\Users\Admin\AppData\Local\1943eebf-c9dc-4cdc-851d-75eff6b2162c\build3.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:4980
        • 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"
          4⤵
          • Creates scheduled task(s)
          PID:4836
  • C:\Users\Admin\AppData\Local\1943eebf-c9dc-4cdc-851d-75eff6b2162c\build2.exe
    "C:\Users\Admin\AppData\Local\1943eebf-c9dc-4cdc-851d-75eff6b2162c\build2.exe"
    1⤵
    • Executes dropped EXE
    PID:3768
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3768 -s 1888
      2⤵
      • Program crash
      PID:5000
  • 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 SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:600
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:872
      • 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"
        3⤵
        • Creates scheduled task(s)
        PID:3700
  • 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 SetThreadContext
    PID:4012
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:4452
  • 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 SetThreadContext
    PID:4996
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:2216
  • 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 SetThreadContext
    PID:2300
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:4704
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    PID:1440

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          1KB

          MD5

          b7470a9aa569b259d4c2bb3b80ae3aa3

          SHA1

          093290296b7f1e402ef96e4b33a88f064aa401eb

          SHA256

          ee8aeed77dd9f1631fa75845214d75bfe04951a61892410ee369035e13fd14c6

          SHA512

          4da3fc09260692f159c37b068664852931b712c8173de5e4b294799ac33ecf179055aaeb016fd0afad88cbfc50a571c4c88033dca56a573431af7462ea7979be

        • 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\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

          Filesize

          410B

          MD5

          33a26e5d466d17b171015ac71fb4fb0e

          SHA1

          f24a07900f877f21e0db60016d5d9ceb37872f0c

          SHA256

          9b36f48f6bbae327f08084a49a3cfc3f75ced04115a14dff51d61638b0a0f816

          SHA512

          ee7e385f87798b50d27b82c3e963a76d68fbb7870f4ceef8613a606ad203c6c80efc39ab91e4dc818f372288a1ad40686d1364d0080686821086520ddf3837c1

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

          Filesize

          392B

          MD5

          c43dd0502bd646cb1c3501c84c7d78cc

          SHA1

          c96db4da22324de285a7a946f1613fe27ead8ee1

          SHA256

          dae88355367286a455ef117028a991c2d3ac3976a73d5cb7bd9d667fca711db3

          SHA512

          0456a94a4375404158ebca2b9ee24aecc287941b613e7b9bfac157aa498d1d4dfa78b2aca6197ffb3059aeb8ae274a6e56dd5fb5107cd52e47b7b6d026a13542

        • C:\Users\Admin\AppData\Local\1943eebf-c9dc-4cdc-851d-75eff6b2162c\build2.exe

          Filesize

          85KB

          MD5

          e2699964967afa8b1dcf272204adfa37

          SHA1

          7ebce94f85306236ad9676df8003e94cfe4e5e26

          SHA256

          6700f017b46053326b388a082e1090725972221d72dad7a4a811c418a8fdfdd7

          SHA512

          13ec99c117695af85edd13f59f204a1e9db79bfb3510178931d549d96dee179fe6f6fb8aa20e5eb2602d03b8db17fbef4d1282738f7240fd522b7d80da7ffa99

        • C:\Users\Admin\AppData\Local\1943eebf-c9dc-4cdc-851d-75eff6b2162c\build2.exe

          Filesize

          115KB

          MD5

          dc5e24f3ba423ced375d94a927b2a42f

          SHA1

          1ccc1bb6b77ba0043b1448b54325afffd7ee9994

          SHA256

          c4c130a4e1ca30f6e7fbdce150c2c8938ecc398e714c2acaae8b1670dda024ad

          SHA512

          15ae540fdd181da3853de714a51141e2fafbbd23674847d959132f6ecd59ff28b8946b62e7b802aa6d9f5227b5fc542c1aec8334c0109ce1dac24f68a0d934ac

        • C:\Users\Admin\AppData\Local\1943eebf-c9dc-4cdc-851d-75eff6b2162c\build2.exe

          Filesize

          74KB

          MD5

          02c889cdf706032270b6962271fd7386

          SHA1

          d8f0ef6295abd4f225bd0898e7ebdf5592c009d8

          SHA256

          fdf623f07daa32a8d1cf5237e342cde192f01606ecf04b395945c5b9d0bdfbb4

          SHA512

          043656b25e5e5d6a8fd877cea4832e1cd73951c98727e8843948d9b504de2ef74a234bfd22b31e294738acc91979c7e6490da3d4fc9e095b159c4257f45cd372

        • C:\Users\Admin\AppData\Local\1943eebf-c9dc-4cdc-851d-75eff6b2162c\build3.exe

          Filesize

          299KB

          MD5

          41b883a061c95e9b9cb17d4ca50de770

          SHA1

          1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

          SHA256

          fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

          SHA512

          cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

        • C:\Users\Admin\AppData\Local\6216d487-2582-49fc-b1b3-5f6ee91fa9b6\50750495d27fc93afddfb07574ecad91245b3395e693a632d124196c91b1e9e4.exe

          Filesize

          400KB

          MD5

          af1965358fd3a51b5d0db70bfdadde14

          SHA1

          5b448ea833c54dab0ea8b98ec6054614079458d4

          SHA256

          e861bd7f4625bfa39fbe31cff17f545ad44407f391d9044e7c4cb0255622d63a

          SHA512

          684b6c4e29742d3198a43554b8007a36f1a9144030ddc0d6faf9c3977b0e271c1e7583188d34e14c3ae27575df174b55f107f0c42ad9e6cdbba4b05ca6458580

        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

          Filesize

          57KB

          MD5

          74ae9689cb04bde426e036319feeb49b

          SHA1

          b932fd3571f6113cacf1e5eb2b3453a05887963c

          SHA256

          b59f5c8dc70d0092f4257c3e13745f67e6324edeee709eff32336d3c93bca180

          SHA512

          642d69ab7ef11418b9d97cfa8882ba38ba5c08fcec428a8a758b9de8ee1d576b4d1fe1a2ca93dc4f1f5e6a8eba8c21f7309975c0c43033350d51e5efe7fcafca

        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

          Filesize

          162KB

          MD5

          b79370edc96b114ffc49aff9b96a00df

          SHA1

          65ea2b9ed8e05a8bb6227b91882d1265383f8f97

          SHA256

          09dd739d19c7219d85312bf8657c88322bd8c9b6ca4eb3188c5f8fb72dbfd602

          SHA512

          c1e296c0e48f83ba411564e43d6e3752a06f90c97a4c55ec22e60ccd0da3e6e5c393a0431a99b5926bd71f572600bc4d125eb93ecaf114b0e0a71aa8e1616b91

        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

          Filesize

          295KB

          MD5

          c7cdde7b95982122372d55969692d371

          SHA1

          908f29b14ac7445f7824b2ad84568c9e2f475c59

          SHA256

          d10e85d0ab29eec15ce35439be43e890f621a6cb472859bef790adcc95a916c3

          SHA512

          cd224be05ae7cd3b0445ff031ad51418b0cbefb9cd52dcbdb2f740a5ed46d9cd38a299aa0b436079b34d2d770c25e51109dcae9bd51be68baa4e24c60f8ef05b

        • memory/600-96-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

          Filesize

          1024KB

        • memory/796-17-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/796-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/796-4-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/796-2-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/796-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1780-20-0x00000000020A0000-0x0000000002142000-memory.dmp

          Filesize

          648KB

        • memory/1992-74-0x0000000002290000-0x0000000002294000-memory.dmp

          Filesize

          16KB

        • memory/1992-72-0x00000000008D0000-0x00000000009D0000-memory.dmp

          Filesize

          1024KB

        • memory/2156-3-0x0000000002290000-0x00000000023AB000-memory.dmp

          Filesize

          1.1MB

        • memory/2156-1-0x0000000002160000-0x00000000021F3000-memory.dmp

          Filesize

          588KB

        • memory/2236-69-0x0000000000810000-0x000000000085B000-memory.dmp

          Filesize

          300KB

        • memory/2236-51-0x0000000000810000-0x000000000085B000-memory.dmp

          Filesize

          300KB

        • memory/2236-50-0x0000000000610000-0x0000000000710000-memory.dmp

          Filesize

          1024KB

        • memory/2300-176-0x0000000000B20000-0x0000000000C20000-memory.dmp

          Filesize

          1024KB

        • memory/3044-63-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3044-37-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3044-22-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3044-30-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3044-29-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3044-36-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3044-24-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3044-34-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3044-23-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3044-38-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3768-47-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/3768-66-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/3768-53-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/3768-52-0x0000000000400000-0x000000000065E000-memory.dmp

          Filesize

          2.4MB

        • memory/4012-121-0x0000000000B00000-0x0000000000C00000-memory.dmp

          Filesize

          1024KB

        • memory/4980-76-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/4980-78-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/4980-71-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/4996-145-0x0000000000AF0000-0x0000000000BF0000-memory.dmp

          Filesize

          1024KB