Analysis

  • max time kernel
    58s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    02/12/2020, 15:30

General

  • Target

    52b1565bb8a50701d219f361929ea870.exe

  • Size

    650KB

  • MD5

    52b1565bb8a50701d219f361929ea870

  • SHA1

    aa6e4ce4342cb755a2fe894288534a04bc23f367

  • SHA256

    9b1d91114fdc8c143afbedc2475e69a539c81d19eeee4ba9301da81b794efaf7

  • SHA512

    6a9028a90574cb6f6431395697b4a23b7b67cb69738a2d3b29359b7c91a7e93c0c10d8c120699da51bbf9b216d9da75361341749a381ab2ed6036e25237c1106

Malware Config

Signatures

  • MassLogger

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

  • MassLogger Main Payload 2 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Beds Protector Packer 1 IoCs

    Detects Beds Protector packer used to load .NET malware.

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • 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
  • Drops file in Program Files directory 56 IoCs
  • Drops file in Windows directory 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 44 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\52b1565bb8a50701d219f361929ea870.exe
    "C:\Users\Admin\AppData\Local\Temp\52b1565bb8a50701d219f361929ea870.exe"
    1⤵
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3084
    • C:\Users\Admin\AppData\Local\Temp\3582-490\52b1565bb8a50701d219f361929ea870.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\52b1565bb8a50701d219f361929ea870.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2768
      • C:\Users\Admin\AppData\Local\Temp\3582-490\52b1565bb8a50701d219f361929ea870.exe
        "C:\Users\Admin\AppData\Local\Temp\3582-490\52b1565bb8a50701d219f361929ea870.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4072
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\3582-490\52b1565bb8a50701d219f361929ea870.exe'
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1612

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1612-33-0x0000000008660000-0x0000000008661000-memory.dmp

    Filesize

    4KB

  • memory/1612-34-0x0000000008970000-0x0000000008971000-memory.dmp

    Filesize

    4KB

  • memory/1612-48-0x0000000007490000-0x0000000007491000-memory.dmp

    Filesize

    4KB

  • memory/1612-46-0x00000000074A0000-0x00000000074A1000-memory.dmp

    Filesize

    4KB

  • memory/1612-45-0x0000000009C00000-0x0000000009C01000-memory.dmp

    Filesize

    4KB

  • memory/1612-44-0x00000000098B0000-0x00000000098B1000-memory.dmp

    Filesize

    4KB

  • memory/1612-43-0x00000000096A0000-0x00000000096A1000-memory.dmp

    Filesize

    4KB

  • memory/1612-36-0x00000000096C0000-0x00000000096F3000-memory.dmp

    Filesize

    204KB

  • memory/1612-27-0x0000000007840000-0x0000000007841000-memory.dmp

    Filesize

    4KB

  • memory/1612-32-0x0000000008620000-0x0000000008621000-memory.dmp

    Filesize

    4KB

  • memory/1612-26-0x0000000004E50000-0x0000000004E51000-memory.dmp

    Filesize

    4KB

  • memory/1612-29-0x0000000007F80000-0x0000000007F81000-memory.dmp

    Filesize

    4KB

  • memory/1612-23-0x0000000072E50000-0x000000007353E000-memory.dmp

    Filesize

    6.9MB

  • memory/1612-28-0x0000000007EE0000-0x0000000007EE1000-memory.dmp

    Filesize

    4KB

  • memory/1612-31-0x00000000082B0000-0x00000000082B1000-memory.dmp

    Filesize

    4KB

  • memory/2768-11-0x0000000005790000-0x0000000005791000-memory.dmp

    Filesize

    4KB

  • memory/2768-6-0x0000000000A70000-0x0000000000A71000-memory.dmp

    Filesize

    4KB

  • memory/2768-5-0x0000000072E50000-0x000000007353E000-memory.dmp

    Filesize

    6.9MB

  • memory/2768-9-0x0000000005350000-0x0000000005351000-memory.dmp

    Filesize

    4KB

  • memory/2768-10-0x0000000005460000-0x00000000054EA000-memory.dmp

    Filesize

    552KB

  • memory/2768-8-0x0000000005850000-0x0000000005851000-memory.dmp

    Filesize

    4KB

  • memory/4072-22-0x0000000006F70000-0x0000000006F71000-memory.dmp

    Filesize

    4KB

  • memory/4072-20-0x00000000064D0000-0x00000000064D1000-memory.dmp

    Filesize

    4KB

  • memory/4072-15-0x0000000072E50000-0x000000007353E000-memory.dmp

    Filesize

    6.9MB

  • memory/4072-24-0x0000000006A60000-0x0000000006A61000-memory.dmp

    Filesize

    4KB

  • memory/4072-12-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB