Analysis

  • max time kernel
    63s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-04-2022 04:09

General

  • Target

    1865ca137e5325420288c092cd84605f0f90515340773264ebda18201e3603f7.exe

  • Size

    1.1MB

  • MD5

    7830bfc8bd4c8808b5ec4a4aba750928

  • SHA1

    5877758e958176eb0aef8d3c09d541cb36ef2031

  • SHA256

    1865ca137e5325420288c092cd84605f0f90515340773264ebda18201e3603f7

  • SHA512

    e07fdbec494b083cb8dad2b7f79497c4717fc7d3763d5480cf996c25923c81aeec83a192a6112e5bdd256a0aa095129cd9dd3c347910515a4d923999fdeb05bc

Malware Config

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main Payload 7 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 35 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1865ca137e5325420288c092cd84605f0f90515340773264ebda18201e3603f7.exe
    "C:\Users\Admin\AppData\Local\Temp\1865ca137e5325420288c092cd84605f0f90515340773264ebda18201e3603f7.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1748
    • C:\Users\Admin\AppData\Local\Temp\1865ca137e5325420288c092cd84605f0f90515340773264ebda18201e3603f7.exe
      "{path}"
      2⤵
        PID:1416
      • C:\Users\Admin\AppData\Local\Temp\1865ca137e5325420288c092cd84605f0f90515340773264ebda18201e3603f7.exe
        "{path}"
        2⤵
        • Checks computer location settings
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        • outlook_win_path
        PID:2040
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\1865ca137e5325420288c092cd84605f0f90515340773264ebda18201e3603f7.exe'
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1860

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1748-54-0x0000000000150000-0x000000000027A000-memory.dmp

      Filesize

      1.2MB

    • memory/1748-55-0x0000000001F90000-0x0000000001FAE000-memory.dmp

      Filesize

      120KB

    • memory/1748-56-0x0000000005C80000-0x0000000005D80000-memory.dmp

      Filesize

      1024KB

    • memory/1860-71-0x000000006F110000-0x000000006F6BB000-memory.dmp

      Filesize

      5.7MB

    • memory/1860-69-0x0000000075761000-0x0000000075763000-memory.dmp

      Filesize

      8KB

    • memory/1860-68-0x0000000000000000-mapping.dmp

    • memory/2040-60-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/2040-62-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/2040-63-0x000000000048170E-mapping.dmp

    • memory/2040-65-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/2040-67-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/2040-61-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/2040-58-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/2040-70-0x0000000000500000-0x0000000000540000-memory.dmp

      Filesize

      256KB

    • memory/2040-57-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB