Analysis

  • max time kernel
    72s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/01/2023, 21:44

General

  • Target

    a1c9f2ad49dad5a238bafe142aa9fb62d2f00c6168a2493d2768d5bcef082be9.exe

  • Size

    758KB

  • MD5

    df249ff3cb8fb36e7c6ae05dc7b14250

  • SHA1

    4f1af06e54b0acce7c18bf341efcd581d86e439d

  • SHA256

    a1c9f2ad49dad5a238bafe142aa9fb62d2f00c6168a2493d2768d5bcef082be9

  • SHA512

    24ce24e2406ffbbf411e0ab2082f41ab2b8779ffac994f58e1c924e107a573dd23964433a75df0cc48f88f420703c33f64c362ee10ff303949b9a55de0166cb9

  • SSDEEP

    12288:ovm33LrvrcbFoLSkPPW3lS2baIceyONn/r0meaVOpLusG4bu:ovGL0GSi63O+ZZ/IyUYsu

Malware Config

Extracted

Family

djvu

C2

http://ex3mall.com/test1/get.php

Attributes
  • extension

    .znsm

  • offline_id

    bE95c2N1x4fARf4W3qmFCjkKPwfFkQaU9NpNBMt1

  • payload_url

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

    http://ex3mall.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-OKSOfVy04R 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: 0623Sduef

rsa_pubkey.plain

Extracted

Family

vidar

Version

1.7

Botnet

19

C2

https://t.me/robloxblackl

https://steamcommunity.com/profiles/76561199458928097

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\a1c9f2ad49dad5a238bafe142aa9fb62d2f00c6168a2493d2768d5bcef082be9.exe
    "C:\Users\Admin\AppData\Local\Temp\a1c9f2ad49dad5a238bafe142aa9fb62d2f00c6168a2493d2768d5bcef082be9.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3464
    • C:\Users\Admin\AppData\Local\Temp\a1c9f2ad49dad5a238bafe142aa9fb62d2f00c6168a2493d2768d5bcef082be9.exe
      "C:\Users\Admin\AppData\Local\Temp\a1c9f2ad49dad5a238bafe142aa9fb62d2f00c6168a2493d2768d5bcef082be9.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1668
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\09805fd9-0839-4010-b47f-c5a45fb70e4d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4396
      • C:\Users\Admin\AppData\Local\Temp\a1c9f2ad49dad5a238bafe142aa9fb62d2f00c6168a2493d2768d5bcef082be9.exe
        "C:\Users\Admin\AppData\Local\Temp\a1c9f2ad49dad5a238bafe142aa9fb62d2f00c6168a2493d2768d5bcef082be9.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1236
        • C:\Users\Admin\AppData\Local\Temp\a1c9f2ad49dad5a238bafe142aa9fb62d2f00c6168a2493d2768d5bcef082be9.exe
          "C:\Users\Admin\AppData\Local\Temp\a1c9f2ad49dad5a238bafe142aa9fb62d2f00c6168a2493d2768d5bcef082be9.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2232
          • C:\Users\Admin\AppData\Local\8d8396e1-4873-4404-8dbe-a9dcddcb7715\build2.exe
            "C:\Users\Admin\AppData\Local\8d8396e1-4873-4404-8dbe-a9dcddcb7715\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4880
            • C:\Users\Admin\AppData\Local\8d8396e1-4873-4404-8dbe-a9dcddcb7715\build2.exe
              "C:\Users\Admin\AppData\Local\8d8396e1-4873-4404-8dbe-a9dcddcb7715\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:4420
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\8d8396e1-4873-4404-8dbe-a9dcddcb7715\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:4572
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:1320
          • C:\Users\Admin\AppData\Local\8d8396e1-4873-4404-8dbe-a9dcddcb7715\build3.exe
            "C:\Users\Admin\AppData\Local\8d8396e1-4873-4404-8dbe-a9dcddcb7715\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1644
            • 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:4296
  • 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:5080
    • 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:1244

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

          9695683c1da621b5f824afebf8ae9376

          SHA1

          73386a28a644b2797170c5ec91e521f9627d30c5

          SHA256

          8cf299113142feaa98877799637e6b49276bd535a765efd9c55dd18d4f906a66

          SHA512

          696a5c3d5ce555f37ecb179cd48c97b01c227739c3d508fd2e96218f4b143abb46231aca5d8bebfb5a0a7566701663ea678cb31bb6af8e91015591ff1b49088f

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

          Filesize

          1KB

          MD5

          a2b3de2676790ac64a1bc51ba3e667d1

          SHA1

          2a7f7090fed2ddd299339197428a9fafc3fd349b

          SHA256

          aa8cdcc9c8c19d24037aa62dfb529b22d25a7eb3927d35f59572c153c81c5a4a

          SHA512

          ab9e80a077a2fe486630e4d7fb159994224fce41c6fbc6197cc600e4fac86d504e8b3d1670ca628fb45792498be42a80e1c6b0af4b3e7451bc039222ea123ef5

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

          Filesize

          488B

          MD5

          cff6e11c995217a1340274214888874f

          SHA1

          f1fb58afe10d6d0b84a9e9a61907faade4577498

          SHA256

          cb65a104837cca6593e477cbdc52092212b99b8e9b3446393cb986c6bb6912aa

          SHA512

          c717316a7b53a8a0473a23119bab44ccc4ce88fc1b53d9f6a36acb2251690715029b65e5034f1412e65da2bfbd3c019487038ecfd0cc6e89bf5bb916502d5295

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

          Filesize

          482B

          MD5

          04d68827a97d759833670c471f2effb3

          SHA1

          3a0ad6ee8dbb01220c05e4414b657f9020a48d2d

          SHA256

          0063cf40f20dc5f7b11a927504239562362554cd92fcbad90d7d7a55c9818db2

          SHA512

          89fc2c41eae5792d79f1b351149196f4e4d07a3bc4f35f952bff79cc95896ac036578a23f9b6463508d65b31de01ba0a32df4067dfa6422314762a15b20c7912

        • C:\Users\Admin\AppData\Local\09805fd9-0839-4010-b47f-c5a45fb70e4d\a1c9f2ad49dad5a238bafe142aa9fb62d2f00c6168a2493d2768d5bcef082be9.exe

          Filesize

          758KB

          MD5

          df249ff3cb8fb36e7c6ae05dc7b14250

          SHA1

          4f1af06e54b0acce7c18bf341efcd581d86e439d

          SHA256

          a1c9f2ad49dad5a238bafe142aa9fb62d2f00c6168a2493d2768d5bcef082be9

          SHA512

          24ce24e2406ffbbf411e0ab2082f41ab2b8779ffac994f58e1c924e107a573dd23964433a75df0cc48f88f420703c33f64c362ee10ff303949b9a55de0166cb9

        • C:\Users\Admin\AppData\Local\8d8396e1-4873-4404-8dbe-a9dcddcb7715\build2.exe

          Filesize

          407KB

          MD5

          3b6782cde711c6e73e09611c5041060e

          SHA1

          412d9f6e64ebee4287eccff782f04943e5381d4f

          SHA256

          740912c948f5c370a23fa34da6fca7ffa1abc420edefcbe3c7a74170c9f47e8c

          SHA512

          d7883a046d9b153094f9f3e5970b78a9084de8472d219a325006a7652cdf5427641a0c10beef4aceaa4ad9d92ea1a2ccf8104588e51760200e7e85be37524c4e

        • C:\Users\Admin\AppData\Local\8d8396e1-4873-4404-8dbe-a9dcddcb7715\build2.exe

          Filesize

          407KB

          MD5

          3b6782cde711c6e73e09611c5041060e

          SHA1

          412d9f6e64ebee4287eccff782f04943e5381d4f

          SHA256

          740912c948f5c370a23fa34da6fca7ffa1abc420edefcbe3c7a74170c9f47e8c

          SHA512

          d7883a046d9b153094f9f3e5970b78a9084de8472d219a325006a7652cdf5427641a0c10beef4aceaa4ad9d92ea1a2ccf8104588e51760200e7e85be37524c4e

        • C:\Users\Admin\AppData\Local\8d8396e1-4873-4404-8dbe-a9dcddcb7715\build2.exe

          Filesize

          407KB

          MD5

          3b6782cde711c6e73e09611c5041060e

          SHA1

          412d9f6e64ebee4287eccff782f04943e5381d4f

          SHA256

          740912c948f5c370a23fa34da6fca7ffa1abc420edefcbe3c7a74170c9f47e8c

          SHA512

          d7883a046d9b153094f9f3e5970b78a9084de8472d219a325006a7652cdf5427641a0c10beef4aceaa4ad9d92ea1a2ccf8104588e51760200e7e85be37524c4e

        • C:\Users\Admin\AppData\Local\8d8396e1-4873-4404-8dbe-a9dcddcb7715\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\8d8396e1-4873-4404-8dbe-a9dcddcb7715\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/1236-143-0x0000000002165000-0x00000000021F6000-memory.dmp

          Filesize

          580KB

        • memory/1668-137-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1668-142-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1668-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1668-135-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1668-136-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2232-168-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2232-152-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2232-146-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2232-147-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3464-133-0x000000000223B000-0x00000000022CC000-memory.dmp

          Filesize

          580KB

        • memory/3464-134-0x0000000002410000-0x000000000252B000-memory.dmp

          Filesize

          1.1MB

        • memory/4420-190-0x0000000000400000-0x000000000045F000-memory.dmp

          Filesize

          380KB

        • memory/4420-169-0x0000000060900000-0x0000000060992000-memory.dmp

          Filesize

          584KB

        • memory/4420-165-0x0000000000400000-0x000000000045F000-memory.dmp

          Filesize

          380KB

        • memory/4420-163-0x0000000000400000-0x000000000045F000-memory.dmp

          Filesize

          380KB

        • memory/4420-192-0x0000000000400000-0x000000000045F000-memory.dmp

          Filesize

          380KB

        • memory/4420-161-0x0000000000400000-0x000000000045F000-memory.dmp

          Filesize

          380KB

        • memory/4420-167-0x0000000000400000-0x000000000045F000-memory.dmp

          Filesize

          380KB

        • memory/4880-166-0x00000000007D0000-0x000000000081C000-memory.dmp

          Filesize

          304KB

        • memory/4880-164-0x00000000005E2000-0x000000000060F000-memory.dmp

          Filesize

          180KB