Analysis

  • max time kernel
    178s
  • max time network
    195s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/10/2022, 04:16

General

  • Target
    7dee1ab63f1a5d740024d881bfd38b54.exe
  • Size 228KB
  • Sample221022-evta4saffp
  • SHA256 4e774e220677e8e916ffadee6367d95dddbb1dd32ec5dc49ef17ed7d7ad3792f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • djvu

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

Attributes
  • extension

    .tury

  • offline_id

    Uz66zEbmA32arcxwT81zZhkb23026oHz5iSp8qt1

  • 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-o7UXxOstmw 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: 0585Jhyjd

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 7 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 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7dee1ab63f1a5d740024d881bfd38b54.exe
    "C:\Users\Admin\AppData\Local\Temp\7dee1ab63f1a5d740024d881bfd38b54.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:768
  • C:\Users\Admin\AppData\Local\Temp\6462.exe
    C:\Users\Admin\AppData\Local\Temp\6462.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3520
    • C:\Users\Admin\AppData\Local\Temp\6462.exe
      C:\Users\Admin\AppData\Local\Temp\6462.exe
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:3068
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\33c2121e-ecdb-40a6-a888-b6d157f19870" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2556
      • C:\Users\Admin\AppData\Local\Temp\6462.exe
        "C:\Users\Admin\AppData\Local\Temp\6462.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2324
        • C:\Users\Admin\AppData\Local\Temp\6462.exe
          "C:\Users\Admin\AppData\Local\Temp\6462.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Executes dropped EXE
          PID:4052
  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\8C2F.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4516
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\8C2F.dll
      2⤵
      • Loads dropped DLL
      PID:3116
  • C:\Users\Admin\AppData\Local\Temp\B3DC.exe
    C:\Users\Admin\AppData\Local\Temp\B3DC.exe
    1⤵
    • Executes dropped EXE
    • Checks SCSI registry key(s)
    • Suspicious behavior: MapViewOfSection
    PID:3032
  • C:\Users\Admin\AppData\Local\Temp\BA36.exe
    C:\Users\Admin\AppData\Local\Temp\BA36.exe
    1⤵
    • Executes dropped EXE
    PID:4236
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4236 -s 340
      2⤵
      • Program crash
      PID:1508
  • C:\Users\Admin\AppData\Local\Temp\BD63.exe
    C:\Users\Admin\AppData\Local\Temp\BD63.exe
    1⤵
    • Executes dropped EXE
    PID:4468
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4468 -s 340
      2⤵
      • Program crash
      PID:4032
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
    • Accesses Microsoft Outlook profiles
    • outlook_office_path
    • outlook_win_path
    PID:1512
  • C:\Windows\explorer.exe
    C:\Windows\explorer.exe
    1⤵
      PID:4492
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4236 -ip 4236
      1⤵
        PID:2252
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4468 -ip 4468
        1⤵
          PID:3836

        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 79313c35e9f5655225ab6d4564a396cf9d473d04909c04db10935c27959f677d
              • MD5 SHA1 SHA512

              B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
              • Size 1KB
              • SHA256 939346daba2e0757e14e822fd55350189708ac8d2d782b148e1744ee85c49aa5
              • MD5 SHA1 SHA512

              07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
              • Size 488B
              • SHA256 81dd1d6c2853ab2853faba89b5b9cec39775439f32b25172b63b4bfd8ab645e4
              • MD5 SHA1 SHA512

              B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
              • Size 482B
              • SHA256 5e7114790a99120981481bd6aee0eaac0e7dc1006c8c3a2a958dfe2c4620ceb8
              • MD5 SHA1 SHA512

              6462.exe

              • Path C:\Users\Admin\AppData\Local\33c2121e-ecdb-40a6-a888-b6d157f19870\6462.exe
              • Size 714KB
              • SHA256 02e43559ca69bb1eb7ea572dfb92ec08d0b8b9da1523bf809e24e229d76bcda9
              • MD5 SHA1 SHA512 SSDEEP

              6462.exe

              • Path C:\Users\Admin\AppData\Local\Temp\6462.exe
              • Size 714KB
              • SHA256 02e43559ca69bb1eb7ea572dfb92ec08d0b8b9da1523bf809e24e229d76bcda9
              • MD5 SHA1 SHA512 SSDEEP

              6462.exe

              • Path C:\Users\Admin\AppData\Local\Temp\6462.exe
              • Size 714KB
              • SHA256 02e43559ca69bb1eb7ea572dfb92ec08d0b8b9da1523bf809e24e229d76bcda9
              • MD5 SHA1 SHA512 SSDEEP

              6462.exe

              • Path C:\Users\Admin\AppData\Local\Temp\6462.exe
              • Size 714KB
              • SHA256 02e43559ca69bb1eb7ea572dfb92ec08d0b8b9da1523bf809e24e229d76bcda9
              • MD5 SHA1 SHA512 SSDEEP

              6462.exe

              • Path C:\Users\Admin\AppData\Local\Temp\6462.exe
              • Size 714KB
              • SHA256 02e43559ca69bb1eb7ea572dfb92ec08d0b8b9da1523bf809e24e229d76bcda9
              • MD5 SHA1 SHA512 SSDEEP

              6462.exe

              • Path C:\Users\Admin\AppData\Local\Temp\6462.exe
              • Size 714KB
              • SHA256 02e43559ca69bb1eb7ea572dfb92ec08d0b8b9da1523bf809e24e229d76bcda9
              • MD5 SHA1 SHA512 SSDEEP

              8C2F.dll

              • Path C:\Users\Admin\AppData\Local\Temp\8C2F.dll
              • Size 2.0MB
              • SHA256 11ab7753a69eb6460e47d8a2f51c433fa6968eb559e0ae5629f009dc7f1faa09
              • MD5 SHA1 SHA512 SSDEEP

              8C2F.dll

              • Path C:\Users\Admin\AppData\Local\Temp\8C2F.dll
              • Size 2.0MB
              • SHA256 11ab7753a69eb6460e47d8a2f51c433fa6968eb559e0ae5629f009dc7f1faa09
              • MD5 SHA1 SHA512 SSDEEP

              8C2F.dll

              • Path C:\Users\Admin\AppData\Local\Temp\8C2F.dll
              • Size 2.0MB
              • SHA256 11ab7753a69eb6460e47d8a2f51c433fa6968eb559e0ae5629f009dc7f1faa09
              • MD5 SHA1 SHA512 SSDEEP

              B3DC.exe

              • Path C:\Users\Admin\AppData\Local\Temp\B3DC.exe
              • Size 227KB
              • SHA256 7e15d9d0ce9dfa658f38836e8a6162f3c5fba8be62eb3b97f4da2c63892984a7
              • MD5 SHA1 SHA512 SSDEEP

              B3DC.exe

              • Path C:\Users\Admin\AppData\Local\Temp\B3DC.exe
              • Size 227KB
              • SHA256 7e15d9d0ce9dfa658f38836e8a6162f3c5fba8be62eb3b97f4da2c63892984a7
              • MD5 SHA1 SHA512 SSDEEP

              BA36.exe

              • Path C:\Users\Admin\AppData\Local\Temp\BA36.exe
              • Size 199KB
              • SHA256 da4f3cc7277c56971c8c0bfa89489ac6305286bbac32499a766cc03ebee97574
              • MD5 SHA1 SHA512 SSDEEP

              BA36.exe

              • Path C:\Users\Admin\AppData\Local\Temp\BA36.exe
              • Size 199KB
              • SHA256 da4f3cc7277c56971c8c0bfa89489ac6305286bbac32499a766cc03ebee97574
              • MD5 SHA1 SHA512 SSDEEP

              BD63.exe

              • Path C:\Users\Admin\AppData\Local\Temp\BD63.exe
              • Size 228KB
              • SHA256 f6b9811165fbd51793947fae594840db136534e7766afcc54e76572cd6d7581e
              • MD5 SHA1 SHA512 SSDEEP

              BD63.exe

              • Path C:\Users\Admin\AppData\Local\Temp\BD63.exe
              • Size 228KB
              • SHA256 f6b9811165fbd51793947fae594840db136534e7766afcc54e76572cd6d7581e
              • MD5 SHA1 SHA512 SSDEEP

              memory/768-134-0x0000000000400000-0x0000000002C27000-memory.dmp

              memory/768-133-0x00000000001F0000-0x00000000001F9000-memory.dmp

              memory/768-132-0x0000000002D32000-0x0000000002D47000-memory.dmp

              memory/768-135-0x0000000000400000-0x0000000002C27000-memory.dmp

              memory/1512-182-0x0000000000D70000-0x0000000000DDB000-memory.dmp

              memory/1512-168-0x0000000000D70000-0x0000000000DDB000-memory.dmp

              memory/1512-167-0x0000000001000000-0x0000000001075000-memory.dmp

              memory/2324-195-0x0000000002119000-0x00000000021AA000-memory.dmp

              memory/3032-185-0x0000000000400000-0x0000000002C27000-memory.dmp

              memory/3032-170-0x0000000002EA3000-0x0000000002EB9000-memory.dmp

              memory/3032-171-0x00000000001F0000-0x00000000001F9000-memory.dmp

              memory/3032-172-0x0000000000400000-0x0000000002C27000-memory.dmp

              memory/3068-148-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/3068-155-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/3068-186-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/3068-145-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/3068-188-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/3068-147-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/3116-163-0x0000000002CD0000-0x0000000002DFD000-memory.dmp

              memory/3116-177-0x0000000002CD0000-0x0000000002DFD000-memory.dmp

              memory/3116-174-0x0000000002ED0000-0x0000000002F89000-memory.dmp

              memory/3116-151-0x0000000002200000-0x0000000002401000-memory.dmp

              memory/3116-160-0x0000000002A70000-0x0000000002B9D000-memory.dmp

              memory/3116-169-0x0000000002E00000-0x0000000002ECF000-memory.dmp

              memory/3116-173-0x0000000002ED0000-0x0000000002F89000-memory.dmp

              memory/3520-141-0x00000000020D5000-0x0000000002166000-memory.dmp

              memory/3520-142-0x0000000002280000-0x000000000239B000-memory.dmp

              memory/4052-194-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/4052-197-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/4052-193-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/4236-179-0x0000000000400000-0x0000000000438000-memory.dmp

              memory/4236-178-0x0000000000513000-0x0000000000529000-memory.dmp

              memory/4468-180-0x0000000002F53000-0x0000000002F69000-memory.dmp

              memory/4468-181-0x00000000001F0000-0x00000000001F9000-memory.dmp

              memory/4468-184-0x0000000000400000-0x0000000002C27000-memory.dmp

              memory/4492-166-0x0000000000920000-0x000000000092C000-memory.dmp