Analysis

  • max time kernel
    67s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/01/2023, 15:40

General

  • Target

    af5aa9bc773c7828ac30cdc423ccb974.exe

  • Size

    799KB

  • MD5

    af5aa9bc773c7828ac30cdc423ccb974

  • SHA1

    11deebd500cbe542d145bd3b5b188a9911f3eaab

  • SHA256

    eabb08567e363697b68cc44d6f14f18970de18eab292e6bca108938543c05184

  • SHA512

    8cc8374f9ee3726f34f18431397286c043da606316f74dc1845e19bb0c0173f67cbd6bfe8b5845d14e46afa8ff1e53ba7717b2d0f8eaeb34246e20e564ed624a

  • SSDEEP

    24576:r6Bnd9sJILuTqi9a9vOWB0AB2QJ7Dcx6+JHCS:r6Bd9srTqimvO6r7DM6gv

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .bpsm

  • offline_id

    pu5TgkFNAS5fWQ2rCzdamsmMrE5wSlTupdTI0pt1

  • payload_url

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

    http://spaceris.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-rmxjMZAZBJ 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: 0626JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

1.8

Botnet

19

C2

https://t.me/year2023start

https://steamcommunity.com/profiles/76561199467421923

Attributes
  • profile_id

    19

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 3 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.

  • 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\af5aa9bc773c7828ac30cdc423ccb974.exe
    "C:\Users\Admin\AppData\Local\Temp\af5aa9bc773c7828ac30cdc423ccb974.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5004
    • C:\Users\Admin\AppData\Local\Temp\af5aa9bc773c7828ac30cdc423ccb974.exe
      "C:\Users\Admin\AppData\Local\Temp\af5aa9bc773c7828ac30cdc423ccb974.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4652
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\d8ddebf5-1457-47c1-a4f8-84d4ea379ada" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1448
      • C:\Users\Admin\AppData\Local\Temp\af5aa9bc773c7828ac30cdc423ccb974.exe
        "C:\Users\Admin\AppData\Local\Temp\af5aa9bc773c7828ac30cdc423ccb974.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1860
        • C:\Users\Admin\AppData\Local\Temp\af5aa9bc773c7828ac30cdc423ccb974.exe
          "C:\Users\Admin\AppData\Local\Temp\af5aa9bc773c7828ac30cdc423ccb974.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3748
          • C:\Users\Admin\AppData\Local\ab2c7fdb-f0d1-4a4b-bf41-0b3e2f712f22\build2.exe
            "C:\Users\Admin\AppData\Local\ab2c7fdb-f0d1-4a4b-bf41-0b3e2f712f22\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4280
            • C:\Users\Admin\AppData\Local\ab2c7fdb-f0d1-4a4b-bf41-0b3e2f712f22\build2.exe
              "C:\Users\Admin\AppData\Local\ab2c7fdb-f0d1-4a4b-bf41-0b3e2f712f22\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:2776
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\ab2c7fdb-f0d1-4a4b-bf41-0b3e2f712f22\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:3400
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:2412
          • C:\Users\Admin\AppData\Local\ab2c7fdb-f0d1-4a4b-bf41-0b3e2f712f22\build3.exe
            "C:\Users\Admin\AppData\Local\ab2c7fdb-f0d1-4a4b-bf41-0b3e2f712f22\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3364
            • 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:3816
  • 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:3564
    • 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:4544

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\mozglue.dll

          Filesize

          133KB

          MD5

          8f73c08a9660691143661bf7332c3c27

          SHA1

          37fa65dd737c50fda710fdbde89e51374d0c204a

          SHA256

          3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

          SHA512

          0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

        • C:\ProgramData\nss3.dll

          Filesize

          1.2MB

          MD5

          bfac4e3c5908856ba17d41edcd455a51

          SHA1

          8eec7e888767aa9e4cca8ff246eb2aacb9170428

          SHA256

          e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

          SHA512

          2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

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

          Filesize

          2KB

          MD5

          411cd537dcecbf901759b8e6c1bdb076

          SHA1

          655df9870867a1760ad1a2c967b330c61767437a

          SHA256

          aa9e441c6cf813efd9ba76fe4ae52d884a5c7d222ed221903c42f09bc14eb7db

          SHA512

          ea780f875c86f8694f67d236a0af066b952862356edb681375e6c387103a91ce085345359f8fe83dd630d310ee6b7637512e5868951c4c257daa411ab9c03e71

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

          Filesize

          1KB

          MD5

          7c56401cb6bd1ae402e06f0fe35f81c4

          SHA1

          b82bbb9fa39266796cafcd308ef4300fc92e3399

          SHA256

          0c58c7bc18d38a3096da6f3575f1c6f8d79b69382d8e89bb5fca917d3cdb7f65

          SHA512

          2ea607c2dc04c8ef34ecb4c4bd297e0f0882b179303565863d1745172322133b78186fa04334e82c135e25fd717719ceec917f49682a4eac37034ea87bb2b6f3

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

          Filesize

          488B

          MD5

          4e7668209abb954c29a0d4791cc7b965

          SHA1

          5d8b90ab6fbba274c7a89fb24306dd246cbe6fb0

          SHA256

          e35f87010f518a559655f62906bf9b0ad249b43f7d335e1817a28b7a96e7ba75

          SHA512

          21dd564dc190fd170f86a944b06207a24eef7b18a11d6b4d9247533efd7e061e52d7f23577d42f747b8bb7a9b690e71f852f5a5ca7d88fbbe8570708c44764a1

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

          Filesize

          482B

          MD5

          b63580d1736d80f116b3d016b601faac

          SHA1

          43b2ef090d844bd53bc039c82b619ba26253cffa

          SHA256

          30c3cd10f97bd15578b4e29663c948f32ac4f94702f7dd790065e7f018d4ac68

          SHA512

          11ff323c069314e0667e2b128d022062c3a574ba05b674d9519cf6b196547cecf88c53b228c46c45594c7ad254839396327f95a9a3e11e6aac634ee299b0cf69

        • C:\Users\Admin\AppData\Local\ab2c7fdb-f0d1-4a4b-bf41-0b3e2f712f22\build2.exe

          Filesize

          429KB

          MD5

          8c14bb1505244971374a88f37a4ec22a

          SHA1

          cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0

          SHA256

          f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962

          SHA512

          5e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e

        • C:\Users\Admin\AppData\Local\ab2c7fdb-f0d1-4a4b-bf41-0b3e2f712f22\build2.exe

          Filesize

          429KB

          MD5

          8c14bb1505244971374a88f37a4ec22a

          SHA1

          cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0

          SHA256

          f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962

          SHA512

          5e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e

        • C:\Users\Admin\AppData\Local\ab2c7fdb-f0d1-4a4b-bf41-0b3e2f712f22\build2.exe

          Filesize

          429KB

          MD5

          8c14bb1505244971374a88f37a4ec22a

          SHA1

          cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0

          SHA256

          f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962

          SHA512

          5e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e

        • C:\Users\Admin\AppData\Local\ab2c7fdb-f0d1-4a4b-bf41-0b3e2f712f22\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\ab2c7fdb-f0d1-4a4b-bf41-0b3e2f712f22\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\d8ddebf5-1457-47c1-a4f8-84d4ea379ada\af5aa9bc773c7828ac30cdc423ccb974.exe

          Filesize

          799KB

          MD5

          af5aa9bc773c7828ac30cdc423ccb974

          SHA1

          11deebd500cbe542d145bd3b5b188a9911f3eaab

          SHA256

          eabb08567e363697b68cc44d6f14f18970de18eab292e6bca108938543c05184

          SHA512

          8cc8374f9ee3726f34f18431397286c043da606316f74dc1845e19bb0c0173f67cbd6bfe8b5845d14e46afa8ff1e53ba7717b2d0f8eaeb34246e20e564ed624a

        • 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/1860-146-0x0000000004906000-0x0000000004997000-memory.dmp

          Filesize

          580KB

        • memory/2776-167-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/2776-165-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/2776-161-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/2776-163-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/2776-169-0x0000000050B70000-0x0000000050C02000-memory.dmp

          Filesize

          584KB

        • memory/2776-190-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/2776-192-0x0000000000400000-0x0000000000460000-memory.dmp

          Filesize

          384KB

        • memory/3748-152-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3748-147-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3748-168-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3748-145-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4280-166-0x0000000000700000-0x000000000074C000-memory.dmp

          Filesize

          304KB

        • memory/4280-164-0x0000000000768000-0x0000000000796000-memory.dmp

          Filesize

          184KB

        • memory/4652-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4652-137-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4652-134-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4652-133-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4652-142-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5004-136-0x0000000004B00000-0x0000000004C1B000-memory.dmp

          Filesize

          1.1MB

        • memory/5004-135-0x0000000004A3B000-0x0000000004ACC000-memory.dmp

          Filesize

          580KB