Analysis

  • max time kernel
    94s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/10/2022, 11:01

General

  • Target

    aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe

  • Size

    729KB

  • MD5

    88323df0df755d5d667684caddf84bbb

  • SHA1

    add6505387ca1dd1b6b4a9526bb01e30439d5bf2

  • SHA256

    aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec

  • SHA512

    886ca96e229d7fbb67bfbec0916fb11621ada62c7a76762f1dba9ee5408f9a2e067c91e617f2837fc3c675c7f42b630daac63a48061383a9f95bd9c574bdadcb

  • SSDEEP

    12288:qcI8Ok6etYL5HPmq2b7h3Ej6ND1IYsF+/z6MfSjUMugPXxRtU7Z0k8Pw+6xQ3EVg:qcdlG5Heq2hhND1ITF+/z6Mf9ElUFsPJ

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .pohj

  • offline_id

    tHl9RvVtHhFQisMomKMdXzz2soNLhV0cuok85it1

  • payload_url

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

    http://winnlinne.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-oTIha7SI4s 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: 0578Jhyjd

rsa_pubkey.plain

Extracted

Family

vidar

Version

54.9

Botnet

517

C2

https://t.me/larsenup

https://ioc.exchange/@zebra54

Attributes
  • profile_id

    517

Signatures

  • Detected Djvu ransomware 10 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
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • 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.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe
    "C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4952
    • C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe
      "C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5000
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\2c463238-a9a9-4fd0-a369-40be0820d42c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2012
      • C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe
        "C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3952
        • C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe
          "C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4040
          • C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe
            "C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2940
            • C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe
              "C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:2876
          • C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build3.exe
            "C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:5044
            • 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:1512
  • 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:4204
    • 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:3180

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

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

          Filesize

          2KB

          MD5

          6f59ed058aa06aaf5ec6213b955aabd4

          SHA1

          baf7b828a563b8fb6111e4ce35e0055575ad80b4

          SHA256

          2d82e2629fa2e08f28b43b15da43dff56c7f4b23b39d66109c7c61998e35b4d5

          SHA512

          6b0f041dafb98b9eaf70ac0d20a98c56e1c42231c4a4ae6e11582b20d20bf8f96dfd7747739a10d77368994441adb0e181b356f8569697b1f22ab4fe931170ce

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

          Filesize

          1KB

          MD5

          0698dbc93ba7b6bef73ba316695f8317

          SHA1

          a444078ff1eb7c88f52cb4e324365926b491ed47

          SHA256

          263292040d77903899257c1d21201dc64d6f8d6b5a1d945cd5b28d0124d7906c

          SHA512

          ebacaa7009aebb88199cd70fd0bb3afe69ed300318cb633edd1c0404e42aef829617f589bcbad6cb7ab4bd0a8ae87f7df1435c786184ecc5de61c8fc6950a900

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

          Filesize

          488B

          MD5

          f70a7a6f44d15ac1af85c4c608effd1f

          SHA1

          2ffe6ad154bc245208a281f436aa5282164bef62

          SHA256

          b6025df06eb0822b60b4924e70af501788e402ea5d5b799335cc4a4c24e2287c

          SHA512

          0a84babce6ced4da79e7efbfce62b4b7904fa271b22e0d1c1020f1dabb3bc81c2eef6c6d971fe60572721e76b62bb8c77686db9760e632ea3e21849725e99f82

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

          Filesize

          482B

          MD5

          f8bb7f2d76c5404b78352360c1b13dc0

          SHA1

          953755b4206d97786b3a3512f0183ce16d60d42a

          SHA256

          620c704a1e72ece2435dc0c5133b17e2f92edca923ec5caa812332b2d2708240

          SHA512

          f573f5002a382f3dc29a7a881dc036d10db2a2f83439027dd6de2428f3262df57aa6a820577e73b37a0fc96acbf6b64cc54e99feb06ce1d1ce03af43130da52f

        • C:\Users\Admin\AppData\Local\2c463238-a9a9-4fd0-a369-40be0820d42c\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe

          Filesize

          729KB

          MD5

          88323df0df755d5d667684caddf84bbb

          SHA1

          add6505387ca1dd1b6b4a9526bb01e30439d5bf2

          SHA256

          aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec

          SHA512

          886ca96e229d7fbb67bfbec0916fb11621ada62c7a76762f1dba9ee5408f9a2e067c91e617f2837fc3c675c7f42b630daac63a48061383a9f95bd9c574bdadcb

        • C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe

          Filesize

          255KB

          MD5

          9c3d4324a153c6438f48083bc333a962

          SHA1

          033e80e2008f4f62d2716ce0473bb0d763d52277

          SHA256

          5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98

          SHA512

          8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd

        • C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe

          Filesize

          255KB

          MD5

          9c3d4324a153c6438f48083bc333a962

          SHA1

          033e80e2008f4f62d2716ce0473bb0d763d52277

          SHA256

          5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98

          SHA512

          8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd

        • C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe

          Filesize

          255KB

          MD5

          9c3d4324a153c6438f48083bc333a962

          SHA1

          033e80e2008f4f62d2716ce0473bb0d763d52277

          SHA256

          5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98

          SHA512

          8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd

        • C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build3.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

        • memory/2876-189-0x0000000000400000-0x000000000045E000-memory.dmp

          Filesize

          376KB

        • memory/2876-157-0x0000000000400000-0x000000000045E000-memory.dmp

          Filesize

          376KB

        • memory/2876-162-0x0000000000400000-0x000000000045E000-memory.dmp

          Filesize

          376KB

        • memory/2876-163-0x0000000000400000-0x000000000045E000-memory.dmp

          Filesize

          376KB

        • memory/2876-168-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/2940-161-0x00000000006E0000-0x000000000072A000-memory.dmp

          Filesize

          296KB

        • memory/2940-159-0x000000000082D000-0x0000000000858000-memory.dmp

          Filesize

          172KB

        • memory/3952-146-0x00000000022D9000-0x000000000236A000-memory.dmp

          Filesize

          580KB

        • memory/4040-148-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4040-147-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4040-145-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4040-188-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4952-133-0x00000000023F0000-0x000000000250B000-memory.dmp

          Filesize

          1.1MB

        • memory/4952-132-0x0000000002281000-0x0000000002312000-memory.dmp

          Filesize

          580KB

        • memory/5000-142-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5000-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5000-137-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5000-135-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5000-136-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB