Analysis

  • max time kernel
    49s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/01/2023, 10:51

General

  • Target
    b4be08f67e4b5fed600bf5558b119168.exe
  • Size 321KB
  • Sample230112-mxtcwsbe7v
  • SHA256 7c46178edd00f3e93ad3cbfa7863ee643a0e79c1ac92eeeba42335e51855a423
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • djvu

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

Attributes
  • extension

    .zouu

  • offline_id

    7hl6KB3alcoZ6n4DhS2rApCezkIMzShntAiXWMt1

  • 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-N3pXlaPXFm 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: 0631JOsie

rsa_pubkey.plain

Extracted

Family
  • aurora

C2
  • 82.115.223.77:8081

Signatures

  • Aurora

    Aurora is a crypto wallet stealer written in Golang.

  • Detected Djvu ransomware 9 IoCs
  • Detects Smokeloader packer 2 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.

  • Modifies file permissions 1 TTPs 1 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • 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 3 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: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 58 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b4be08f67e4b5fed600bf5558b119168.exe
    "C:\Users\Admin\AppData\Local\Temp\b4be08f67e4b5fed600bf5558b119168.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:3448
  • C:\Users\Admin\AppData\Local\Temp\C1ED.exe
    C:\Users\Admin\AppData\Local\Temp\C1ED.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2312
    • C:\Users\Admin\AppData\Local\Temp\C1ED.exe
      C:\Users\Admin\AppData\Local\Temp\C1ED.exe
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:2336
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\ca208512-7d33-4b29-85c9-f2d12cfe8f9c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1764
      • C:\Users\Admin\AppData\Local\Temp\C1ED.exe
        "C:\Users\Admin\AppData\Local\Temp\C1ED.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2624
        • C:\Users\Admin\AppData\Local\Temp\C1ED.exe
          "C:\Users\Admin\AppData\Local\Temp\C1ED.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Executes dropped EXE
          PID:3028
  • C:\Users\Admin\AppData\Local\Temp\C588.exe
    C:\Users\Admin\AppData\Local\Temp\C588.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3088
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4020
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        wmic os get Caption
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4708
      • C:\Windows\SysWOW64\cmd.exe
        cmd /C "wmic path win32_VideoController get name"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2656
        • C:\Windows\SysWOW64\Wbem\WMIC.exe
          wmic path win32_VideoController get name
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4920
      • C:\Windows\SysWOW64\cmd.exe
        cmd /C "wmic cpu get name"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3412
        • C:\Windows\SysWOW64\Wbem\WMIC.exe
          wmic cpu get name
          4⤵
            PID:2132
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3088 -s 140
        2⤵
        • Program crash
        PID:4448
    • C:\Users\Admin\AppData\Local\Temp\C981.exe
      C:\Users\Admin\AppData\Local\Temp\C981.exe
      1⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:2616
    • C:\Users\Admin\AppData\Local\Temp\CB37.exe
      C:\Users\Admin\AppData\Local\Temp\CB37.exe
      1⤵
      • Executes dropped EXE
      PID:1140
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1140 -s 376
        2⤵
        • Program crash
        PID:4628
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1140 -ip 1140
      1⤵
        PID:1412
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3088 -ip 3088
        1⤵
          PID:4004

        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 2ba194594a0d55b2bc4efc4b8eb5432b2788e1eb7192b83326fcdca28e9ce2b8
              • MD5 SHA1 SHA512

              B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
              • Size 1KB
              • SHA256 48c65c4f7dfbf070a4e8157cd0ec68e495eb3f963668f3d51ae6fedcff7fcda1
              • MD5 SHA1 SHA512

              07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
              • Size 488B
              • SHA256 cd0128a62532af28524ea876d0b8651fda5813964d32aa3d8ec0c7c4833ef8d9
              • MD5 SHA1 SHA512

              B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
              • Size 482B
              • SHA256 090cdaef1701fb41063d8c94754855c5e5ddd3dad21dc2846ee741f3d7b66092
              • MD5 SHA1 SHA512

              C1ED.exe

              • Path C:\Users\Admin\AppData\Local\Temp\C1ED.exe
              • Size 827KB
              • SHA256 b0fe9334ec54815e8eda224488e34d41fcdaef253cad3c7cb751b273b3dc91e3
              • MD5 SHA1 SHA512 SSDEEP

              C1ED.exe

              • Path C:\Users\Admin\AppData\Local\Temp\C1ED.exe
              • Size 827KB
              • SHA256 b0fe9334ec54815e8eda224488e34d41fcdaef253cad3c7cb751b273b3dc91e3
              • MD5 SHA1 SHA512 SSDEEP

              C1ED.exe

              • Path C:\Users\Admin\AppData\Local\Temp\C1ED.exe
              • Size 827KB
              • SHA256 b0fe9334ec54815e8eda224488e34d41fcdaef253cad3c7cb751b273b3dc91e3
              • MD5 SHA1 SHA512 SSDEEP

              C1ED.exe

              • Path C:\Users\Admin\AppData\Local\Temp\C1ED.exe
              • Size 827KB
              • SHA256 b0fe9334ec54815e8eda224488e34d41fcdaef253cad3c7cb751b273b3dc91e3
              • MD5 SHA1 SHA512 SSDEEP

              C1ED.exe

              • Path C:\Users\Admin\AppData\Local\Temp\C1ED.exe
              • Size 827KB
              • SHA256 b0fe9334ec54815e8eda224488e34d41fcdaef253cad3c7cb751b273b3dc91e3
              • MD5 SHA1 SHA512 SSDEEP

              C588.exe

              • Path C:\Users\Admin\AppData\Local\Temp\C588.exe
              • Size 4.5MB
              • SHA256 88076120630d47c184b949cb272e69a1df48244300e1f10b09443ef3140d554b
              • MD5 SHA1 SHA512 SSDEEP

              C588.exe

              • Path C:\Users\Admin\AppData\Local\Temp\C588.exe
              • Size 4.5MB
              • SHA256 88076120630d47c184b949cb272e69a1df48244300e1f10b09443ef3140d554b
              • MD5 SHA1 SHA512 SSDEEP

              C981.exe

              • Path C:\Users\Admin\AppData\Local\Temp\C981.exe
              • Size 268KB
              • SHA256 4071be26071340339075d49126220e2734a964f08d781f07cc3950329b6ad275
              • MD5 SHA1 SHA512 SSDEEP

              C981.exe

              • Path C:\Users\Admin\AppData\Local\Temp\C981.exe
              • Size 268KB
              • SHA256 4071be26071340339075d49126220e2734a964f08d781f07cc3950329b6ad275
              • MD5 SHA1 SHA512 SSDEEP

              CB37.exe

              • Path C:\Users\Admin\AppData\Local\Temp\CB37.exe
              • Size 320KB
              • SHA256 95df5a1e6f0e456b2c68743474926c76a2897c54e971cbb0668efa19c2e24744
              • MD5 SHA1 SHA512 SSDEEP

              CB37.exe

              • Path C:\Users\Admin\AppData\Local\Temp\CB37.exe
              • Size 320KB
              • SHA256 95df5a1e6f0e456b2c68743474926c76a2897c54e971cbb0668efa19c2e24744
              • MD5 SHA1 SHA512 SSDEEP

              C1ED.exe

              • Path C:\Users\Admin\AppData\Local\ca208512-7d33-4b29-85c9-f2d12cfe8f9c\C1ED.exe
              • Size 827KB
              • SHA256 b0fe9334ec54815e8eda224488e34d41fcdaef253cad3c7cb751b273b3dc91e3
              • MD5 SHA1 SHA512 SSDEEP

              memory/1140-161-0x0000000000400000-0x0000000000456000-memory.dmp

              memory/1140-160-0x000000000062D000-0x0000000000643000-memory.dmp

              memory/2312-153-0x0000000002270000-0x000000000238B000-memory.dmp

              memory/2312-152-0x0000000002029000-0x00000000020BA000-memory.dmp

              memory/2336-158-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/2336-149-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/2336-154-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/2336-151-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/2336-164-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/2616-155-0x0000000002EAD000-0x0000000002EBD000-memory.dmp

              memory/2616-156-0x0000000002CF0000-0x0000000002CF9000-memory.dmp

              memory/2616-166-0x0000000000400000-0x0000000002BAA000-memory.dmp

              memory/2616-157-0x0000000000400000-0x0000000002BAA000-memory.dmp

              memory/2624-171-0x0000000002011000-0x00000000020A2000-memory.dmp

              memory/3028-170-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/3028-172-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/3028-173-0x0000000000400000-0x0000000000537000-memory.dmp

              memory/3088-188-0x0000000000430000-0x00000000008AE000-memory.dmp

              memory/3448-135-0x0000000000400000-0x0000000000456000-memory.dmp

              memory/3448-134-0x0000000000400000-0x0000000000456000-memory.dmp

              memory/3448-132-0x000000000064E000-0x0000000000664000-memory.dmp

              memory/3448-133-0x00000000005F0000-0x00000000005F9000-memory.dmp

              memory/4020-179-0x0000000000B40000-0x0000000000FB6000-memory.dmp

              memory/4020-189-0x0000000000B40000-0x0000000000FB6000-memory.dmp