Analysis

  • max time kernel
    152s
  • max time network
    107s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    08/11/2022, 09:46

General

  • Target
    file.exe
  • Size 936KB
  • Sample221108-lrmsgscbgl
  • SHA256 e0e00cdc8131a6cb50c336eb05dbc4d7f47a6a77aaad73b2ed869d2fc93abe40
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Looks up external IP address via web service 1 IoCs

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

  • Drops file in System32 directory 13 IoCs
  • Suspicious use of SetThreadContext 1 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.

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 22 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Windows\system32\services.exe
    C:\Windows\system32\services.exe
    1⤵
      PID:460
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k netsvcs
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Suspicious use of SetThreadContext
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:868
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k WspService
        2⤵
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        PID:1100
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1976
      • C:\Users\Admin\AppData\Local\Temp\file.exe
        "C:\Users\Admin\AppData\Local\Temp\file.exe" -q
        2⤵
          PID:1960
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
        1⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:1812
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
          2⤵
          • Loads dropped DLL
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:728

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            db.dat

            • Path C:\Users\Admin\AppData\Local\Temp\db.dat
            • Size 557KB
            • SHA256 ba07f9487a10ed278772d9571d6e867f53338029a3c4580eed2e08d8f5a8f9bd
            • MD5 SHA1 SHA512 SSDEEP

            db.dll

            • Path C:\Users\Admin\AppData\Local\Temp\db.dll
            • Size 52KB
            • SHA256 3d73e4425bb7294f20ef86096504ab96d288bd70d2bc6a8361b629903f3b1d01
            • MD5 SHA1 SHA512 SSDEEP

            db.dll

            • Path \Users\Admin\AppData\Local\Temp\db.dll
            • Size 52KB
            • SHA256 3d73e4425bb7294f20ef86096504ab96d288bd70d2bc6a8361b629903f3b1d01
            • MD5 SHA1 SHA512 SSDEEP

            db.dll

            • Path \Users\Admin\AppData\Local\Temp\db.dll
            • Size 52KB
            • SHA256 3d73e4425bb7294f20ef86096504ab96d288bd70d2bc6a8361b629903f3b1d01
            • MD5 SHA1 SHA512 SSDEEP

            db.dll

            • Path \Users\Admin\AppData\Local\Temp\db.dll
            • Size 52KB
            • SHA256 3d73e4425bb7294f20ef86096504ab96d288bd70d2bc6a8361b629903f3b1d01
            • MD5 SHA1 SHA512 SSDEEP

            db.dll

            • Path \Users\Admin\AppData\Local\Temp\db.dll
            • Size 52KB
            • SHA256 3d73e4425bb7294f20ef86096504ab96d288bd70d2bc6a8361b629903f3b1d01
            • MD5 SHA1 SHA512 SSDEEP

            memory/728-68-0x0000000001F10000-0x0000000001F6E000-memory.dmp

            memory/728-67-0x0000000001D20000-0x0000000001E21000-memory.dmp

            memory/868-70-0x0000000000FA0000-0x0000000001012000-memory.dmp

            memory/868-69-0x0000000000AF0000-0x0000000000B3D000-memory.dmp

            memory/1100-71-0x0000000000060000-0x00000000000AD000-memory.dmp

            memory/1100-64-0x0000000000060000-0x00000000000AD000-memory.dmp

            memory/1100-72-0x0000000000440000-0x00000000004B2000-memory.dmp

            memory/1100-73-0x0000000000440000-0x00000000004B2000-memory.dmp

            memory/1100-74-0x0000000001C30000-0x0000000001C4B000-memory.dmp

            memory/1100-75-0x0000000002BF0000-0x0000000002CFA000-memory.dmp

            memory/1100-76-0x0000000001C50000-0x0000000001C70000-memory.dmp

            memory/1100-77-0x0000000001C70000-0x0000000001C8B000-memory.dmp

            memory/1100-78-0x000007FEFB531000-0x000007FEFB533000-memory.dmp

            memory/1100-79-0x0000000002BF0000-0x0000000002CFA000-memory.dmp

            memory/1976-54-0x0000000074D81000-0x0000000074D83000-memory.dmp