Analysis

  • max time kernel
    151s
  • max time network
    156s
  • 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, 04:02

General

  • Target
    file.exe
  • Size 211KB
  • Sample221011-els9radfb8
  • SHA256 31991c4e5167dd4f5a7a3a71fe0b09cc8cad51bb610057c18f1d58383c47f79a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • djvu

C2
  • http://winnlinne.com/lancer/get.php

Attributes
  • extension

    .towz

  • offline_id

    SSHsHMHGmSIhrz50VnIxLJJX15osxEQY6iXedXt1

  • 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-Kbx8mJatqN 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: 0577Jhyjd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 10 IoCs
  • Detects Smokeloader packer 3 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Executes dropped EXE 9 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 5 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:736
  • C:\Users\Admin\AppData\Local\Temp\B6BD.exe
    C:\Users\Admin\AppData\Local\Temp\B6BD.exe
    1⤵
    • Executes dropped EXE
    PID:4152
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4152 -s 536
      2⤵
      • Program crash
      PID:2544
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4152 -s 560
      2⤵
      • Program crash
      PID:3024
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4152 -s 560
      2⤵
      • Program crash
      PID:2644
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4152 -s 608
      2⤵
      • Program crash
      PID:996
  • C:\Users\Admin\AppData\Local\Temp\D8CD.exe
    C:\Users\Admin\AppData\Local\Temp\D8CD.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3388
    • C:\Users\Admin\AppData\Local\Temp\D8CD.exe
      C:\Users\Admin\AppData\Local\Temp\D8CD.exe
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:5064
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\d2b0a8e2-3b88-497d-9c57-f0b93c8e2cd9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:404
      • C:\Users\Admin\AppData\Local\Temp\D8CD.exe
        "C:\Users\Admin\AppData\Local\Temp\D8CD.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        PID:3596
        • C:\Users\Admin\AppData\Local\Temp\D8CD.exe
          "C:\Users\Admin\AppData\Local\Temp\D8CD.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Executes dropped EXE
          PID:4312
  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\DA83.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1528
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\DA83.dll
      2⤵
      • Loads dropped DLL
      PID:2832
  • C:\Users\Admin\AppData\Local\Temp\DCC6.exe
    C:\Users\Admin\AppData\Local\Temp\DCC6.exe
    1⤵
    • Executes dropped EXE
    PID:772
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 772 -s 340
      2⤵
      • Program crash
      PID:1552
  • C:\Users\Admin\AppData\Local\Temp\E071.exe
    C:\Users\Admin\AppData\Local\Temp\E071.exe
    1⤵
    • Executes dropped EXE
    • Checks SCSI registry key(s)
    • Suspicious behavior: MapViewOfSection
    PID:2416
  • C:\Users\Admin\AppData\Local\Temp\E4F6.exe
    C:\Users\Admin\AppData\Local\Temp\E4F6.exe
    1⤵
    • Executes dropped EXE
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4376
    • C:\Windows\SysWOW64\ftp.exe
      ftp /?
      2⤵
        PID:1152
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c cmd < Preferences.vsd & ping -n 5 localhost
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1276
        • C:\Windows\SysWOW64\cmd.exe
          cmd
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1704
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist /FI "imagename eq AvastUI.exe"
            4⤵
            • Enumerates processes with tasklist
            • Suspicious use of AdjustPrivilegeToken
            PID:4116
          • C:\Windows\SysWOW64\find.exe
            find /I /N "avastui.exe"
            4⤵
              PID:2228
            • C:\Windows\SysWOW64\tasklist.exe
              tasklist /FI "imagename eq AVGUI.exe"
              4⤵
              • Enumerates processes with tasklist
              • Suspicious use of AdjustPrivilegeToken
              PID:3372
            • C:\Windows\SysWOW64\find.exe
              find /I /N "avgui.exe"
              4⤵
                PID:3308
              • C:\Windows\SysWOW64\findstr.exe
                findstr /V /R "^zsXAL$" Simulation.vsd
                4⤵
                  PID:2480
                • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Bags.exe.pif
                  Bags.exe.pif f
                  4⤵
                  • Executes dropped EXE
                  • Suspicious use of FindShellTrayWindow
                  • Suspicious use of SendNotifyMessage
                  PID:4484
                • C:\Windows\SysWOW64\PING.EXE
                  ping localhost -n 5
                  4⤵
                  • Runs ping.exe
                  PID:3900
              • C:\Windows\SysWOW64\PING.EXE
                ping -n 5 localhost
                3⤵
                • Runs ping.exe
                PID:4860
          • C:\Windows\SysWOW64\explorer.exe
            C:\Windows\SysWOW64\explorer.exe
            1⤵
            • Accesses Microsoft Outlook profiles
            • outlook_office_path
            • outlook_win_path
            PID:4580
          • C:\Windows\explorer.exe
            C:\Windows\explorer.exe
            1⤵
              PID:2680
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 772 -ip 772
              1⤵
                PID:936
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4152 -ip 4152
                1⤵
                  PID:1648
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4152 -ip 4152
                  1⤵
                    PID:4364
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 4152 -ip 4152
                    1⤵
                      PID:1912
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4152 -ip 4152
                      1⤵
                        PID:1560

                      Network

                            MITRE ATT&CK Enterprise v6

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

                            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
                            • Size 2KB
                            • SHA256 2d82e2629fa2e08f28b43b15da43dff56c7f4b23b39d66109c7c61998e35b4d5
                            • MD5 SHA1 SHA512

                            B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

                            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
                            • Size 1KB
                            • SHA256 263292040d77903899257c1d21201dc64d6f8d6b5a1d945cd5b28d0124d7906c
                            • MD5 SHA1 SHA512

                            07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

                            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
                            • Size 488B
                            • SHA256 a7b9008dee608120bfa084582b27095638ab0edadf3061b0e990908ada8741f2
                            • MD5 SHA1 SHA512

                            B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

                            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
                            • Size 482B
                            • SHA256 ca41fa37a2cf86be44e9a6293a408664c542ffb9e392223566a2da398dc1aba4
                            • MD5 SHA1 SHA512

                            B6BD.exe

                            • Path C:\Users\Admin\AppData\Local\Temp\B6BD.exe
                            • Size 5.6MB
                            • SHA256 47dff2cd65d884f11c012b5e682e2492cf50d81d74a90b23737bc5a697226b3f
                            • MD5 SHA1 SHA512 SSDEEP

                            B6BD.exe

                            • Path C:\Users\Admin\AppData\Local\Temp\B6BD.exe
                            • Size 5.6MB
                            • SHA256 47dff2cd65d884f11c012b5e682e2492cf50d81d74a90b23737bc5a697226b3f
                            • MD5 SHA1 SHA512 SSDEEP

                            D8CD.exe

                            • Path C:\Users\Admin\AppData\Local\Temp\D8CD.exe
                            • Size 794KB
                            • SHA256 dabde7613fffa25ef0f3d562f1918f81afd615dc74186e7dc2c004fbb12a7210
                            • MD5 SHA1 SHA512 SSDEEP

                            D8CD.exe

                            • Path C:\Users\Admin\AppData\Local\Temp\D8CD.exe
                            • Size 794KB
                            • SHA256 dabde7613fffa25ef0f3d562f1918f81afd615dc74186e7dc2c004fbb12a7210
                            • MD5 SHA1 SHA512 SSDEEP

                            D8CD.exe

                            • Path C:\Users\Admin\AppData\Local\Temp\D8CD.exe
                            • Size 794KB
                            • SHA256 dabde7613fffa25ef0f3d562f1918f81afd615dc74186e7dc2c004fbb12a7210
                            • MD5 SHA1 SHA512 SSDEEP

                            D8CD.exe

                            • Path C:\Users\Admin\AppData\Local\Temp\D8CD.exe
                            • Size 794KB
                            • SHA256 dabde7613fffa25ef0f3d562f1918f81afd615dc74186e7dc2c004fbb12a7210
                            • MD5 SHA1 SHA512 SSDEEP

                            D8CD.exe

                            • Path C:\Users\Admin\AppData\Local\Temp\D8CD.exe
                            • Size 794KB
                            • SHA256 dabde7613fffa25ef0f3d562f1918f81afd615dc74186e7dc2c004fbb12a7210
                            • MD5 SHA1 SHA512 SSDEEP

                            DA83.dll

                            • Path C:\Users\Admin\AppData\Local\Temp\DA83.dll
                            • Size 1.4MB
                            • SHA256 58ee95995100dee5d1511f860081b27ac8bdca627e43ed0c783f14351a1eb70d
                            • MD5 SHA1 SHA512 SSDEEP

                            DA83.dll

                            • Path C:\Users\Admin\AppData\Local\Temp\DA83.dll
                            • Size 1.4MB
                            • SHA256 58ee95995100dee5d1511f860081b27ac8bdca627e43ed0c783f14351a1eb70d
                            • MD5 SHA1 SHA512 SSDEEP

                            DA83.dll

                            • Path C:\Users\Admin\AppData\Local\Temp\DA83.dll
                            • Size 1.4MB
                            • SHA256 58ee95995100dee5d1511f860081b27ac8bdca627e43ed0c783f14351a1eb70d
                            • MD5 SHA1 SHA512 SSDEEP

                            DCC6.exe

                            • Path C:\Users\Admin\AppData\Local\Temp\DCC6.exe
                            • Size 274KB
                            • SHA256 30502d73924e948dadf7c1162bb2ad385fe2bc04872eb37bcdb002c9351095bf
                            • MD5 SHA1 SHA512 SSDEEP

                            DCC6.exe

                            • Path C:\Users\Admin\AppData\Local\Temp\DCC6.exe
                            • Size 274KB
                            • SHA256 30502d73924e948dadf7c1162bb2ad385fe2bc04872eb37bcdb002c9351095bf
                            • MD5 SHA1 SHA512 SSDEEP

                            E071.exe

                            • Path C:\Users\Admin\AppData\Local\Temp\E071.exe
                            • Size 210KB
                            • SHA256 f876e3f788538f0e83a3081ee1291e6fe6bdf4eec0193aaa274a786be476bbc4
                            • MD5 SHA1 SHA512 SSDEEP

                            E071.exe

                            • Path C:\Users\Admin\AppData\Local\Temp\E071.exe
                            • Size 210KB
                            • SHA256 f876e3f788538f0e83a3081ee1291e6fe6bdf4eec0193aaa274a786be476bbc4
                            • MD5 SHA1 SHA512 SSDEEP

                            E4F6.exe

                            • Path C:\Users\Admin\AppData\Local\Temp\E4F6.exe
                            • Size 692KB
                            • SHA256 b7d5fb28fcb3168a491be679b71c79ad28e4dde619361671095c81c2b6c97970
                            • MD5 SHA1 SHA512 SSDEEP

                            Bags.exe.pif

                            • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Bags.exe.pif
                            • Size 924KB
                            • SHA256 3e26723394ade92f8163b5643960189cb07358b0f96529a477d37176d68aa0a0
                            • MD5 SHA1 SHA512 SSDEEP

                            Bags.exe.pif

                            • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Bags.exe.pif
                            • Size 924KB
                            • SHA256 3e26723394ade92f8163b5643960189cb07358b0f96529a477d37176d68aa0a0
                            • MD5 SHA1 SHA512 SSDEEP

                            Euros.vsd

                            • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Euros.vsd
                            • Size 725KB
                            • SHA256 97208cb34d8b0af9e7bf3b8400ddd249337a58c4be8a38f39e3874900a73d455
                            • MD5 SHA1 SHA512 SSDEEP

                            Preferences.vsd

                            • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Preferences.vsd
                            • Size 10KB
                            • SHA256 7f50c3b8b4e5f2117c562a78e2a08c65a25c019e3341c649b2a44b7873ae190d
                            • MD5 SHA1 SHA512 SSDEEP

                            Simulation.vsd

                            • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Simulation.vsd
                            • Size 924KB
                            • SHA256 b6031d6424a4221830e29153fc7125dbd251b454539de76fee852a6875840431
                            • MD5 SHA1 SHA512 SSDEEP

                            D8CD.exe

                            • Path C:\Users\Admin\AppData\Local\d2b0a8e2-3b88-497d-9c57-f0b93c8e2cd9\D8CD.exe
                            • Size 794KB
                            • SHA256 dabde7613fffa25ef0f3d562f1918f81afd615dc74186e7dc2c004fbb12a7210
                            • MD5 SHA1 SHA512 SSDEEP

                            memory/736-134-0x0000000000400000-0x0000000000592000-memory.dmp

                            memory/736-132-0x000000000083D000-0x000000000084E000-memory.dmp

                            memory/736-136-0x0000000000720000-0x0000000000729000-memory.dmp

                            memory/736-137-0x0000000000400000-0x0000000000592000-memory.dmp

                            memory/736-135-0x000000000083D000-0x000000000084E000-memory.dmp

                            memory/736-133-0x0000000000720000-0x0000000000729000-memory.dmp

                            memory/772-178-0x0000000000637000-0x0000000000647000-memory.dmp

                            memory/772-175-0x0000000000400000-0x0000000000449000-memory.dmp

                            memory/2416-173-0x0000000000610000-0x0000000000619000-memory.dmp

                            memory/2416-172-0x000000000080D000-0x000000000081D000-memory.dmp

                            memory/2416-174-0x0000000000400000-0x0000000000592000-memory.dmp

                            memory/2416-179-0x0000000000400000-0x0000000000592000-memory.dmp

                            memory/2680-167-0x00000000005E0000-0x00000000005EC000-memory.dmp

                            memory/2832-181-0x0000000002C40000-0x0000000002CF5000-memory.dmp

                            memory/2832-158-0x0000000002390000-0x00000000024FB000-memory.dmp

                            memory/2832-182-0x0000000002C40000-0x0000000002CF5000-memory.dmp

                            memory/2832-176-0x0000000002870000-0x0000000002967000-memory.dmp

                            memory/2832-180-0x0000000002B70000-0x0000000002C39000-memory.dmp

                            memory/2832-186-0x0000000002A70000-0x0000000002B65000-memory.dmp

                            memory/2832-177-0x0000000002A70000-0x0000000002B65000-memory.dmp

                            memory/3388-159-0x0000000000544000-0x00000000005D5000-memory.dmp

                            memory/3388-160-0x0000000002200000-0x000000000231B000-memory.dmp

                            memory/3596-213-0x0000000000989000-0x0000000000A1A000-memory.dmp

                            memory/4152-191-0x0000000000400000-0x00000000009A0000-memory.dmp

                            memory/4152-190-0x0000000003260000-0x000000000377F000-memory.dmp

                            memory/4152-219-0x0000000000400000-0x00000000009A0000-memory.dmp

                            memory/4312-220-0x0000000000400000-0x0000000000537000-memory.dmp

                            memory/4312-212-0x0000000000400000-0x0000000000537000-memory.dmp

                            memory/4312-211-0x0000000000400000-0x0000000000537000-memory.dmp

                            memory/4580-185-0x0000000001200000-0x0000000001275000-memory.dmp

                            memory/4580-184-0x0000000000AC0000-0x0000000000B2B000-memory.dmp

                            memory/4580-171-0x0000000000AC0000-0x0000000000B2B000-memory.dmp

                            memory/4580-170-0x0000000001200000-0x0000000001275000-memory.dmp

                            memory/5064-205-0x0000000000400000-0x0000000000537000-memory.dmp

                            memory/5064-163-0x0000000000400000-0x0000000000537000-memory.dmp

                            memory/5064-168-0x0000000000400000-0x0000000000537000-memory.dmp

                            memory/5064-165-0x0000000000400000-0x0000000000537000-memory.dmp

                            memory/5064-169-0x0000000000400000-0x0000000000537000-memory.dmp