Analysis

  • max time kernel
    61s
  • max time network
    65s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    27-04-2022 17:37

General

  • Target

    da99cadc0e11a6af4180d7583bdf1b7f71ed8aff0c400fc9f1fbc0c311f6c294.exe

  • Size

    3.1MB

  • MD5

    eb8c24f4916e3ac718ac6480b2fa32c1

  • SHA1

    0b31a630c5b6dfa6262f75adb93298352eb9688b

  • SHA256

    da99cadc0e11a6af4180d7583bdf1b7f71ed8aff0c400fc9f1fbc0c311f6c294

  • SHA512

    b030df85c22ce1be3fc130dbf50d7ed29c4c989248a90d4fcdd5bd6c8cea43d6d8f167fb9052571342c0bc5f3dcd016d588ee6af55198ae4521389080b9cb97c

Malware Config

Signatures

  • Echelon

    Echelon is a .NET stealer that targets passwords from browsers, email and cryptocurrency clients.

  • Echelon log file 1 IoCs

    Detects a log file produced by Echelon.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Checks whether UAC is enabled 1 TTPs 1 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.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 35 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\da99cadc0e11a6af4180d7583bdf1b7f71ed8aff0c400fc9f1fbc0c311f6c294.exe
    "C:\Users\Admin\AppData\Local\Temp\da99cadc0e11a6af4180d7583bdf1b7f71ed8aff0c400fc9f1fbc0c311f6c294.exe"
    1⤵
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Accesses Microsoft Outlook profiles
    • Checks whether UAC is enabled
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:972
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 972 -s 1956
      2⤵
      • Program crash
      PID:1692

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/972-54-0x0000000075D21000-0x0000000075D23000-memory.dmp

    Filesize

    8KB

  • memory/972-56-0x0000000077A50000-0x0000000077BD0000-memory.dmp

    Filesize

    1.5MB

  • memory/972-57-0x0000000000040000-0x000000000035C000-memory.dmp

    Filesize

    3.1MB

  • memory/972-58-0x0000000000040000-0x000000000035C000-memory.dmp

    Filesize

    3.1MB

  • memory/972-59-0x0000000003FA5000-0x0000000003FB6000-memory.dmp

    Filesize

    68KB

  • memory/1692-60-0x0000000000000000-mapping.dmp