Analysis

  • max time kernel
    136s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    14-04-2022 13:34

General

  • Target

    84cd51ef8ad4c12c88e1d6c26be1d0b5883a844b5a8a301c24114dfb7ea607b6.exe

  • Size

    1.4MB

  • MD5

    40e301b6314909edcd20bfb643c608b8

  • SHA1

    b1928e8615249a3eed7572f2d2f908e8d1e063a3

  • SHA256

    84cd51ef8ad4c12c88e1d6c26be1d0b5883a844b5a8a301c24114dfb7ea607b6

  • SHA512

    617a27125b8a8567be2fea312d80a378c43ea62e8e807560daaa8421b42b790643bbfbebda29f45a283cac3c881e8f9cb20f094c95bfcb556414b68053dd6485

Malware Config

Signatures

  • MassLogger

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

  • MassLogger Main Payload 1 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 42 IoCs
  • Adds Run key to start application 2 TTPs 1 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\84cd51ef8ad4c12c88e1d6c26be1d0b5883a844b5a8a301c24114dfb7ea607b6.exe
    "C:\Users\Admin\AppData\Local\Temp\84cd51ef8ad4c12c88e1d6c26be1d0b5883a844b5a8a301c24114dfb7ea607b6.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:604
    • C:\Users\Admin\AppData\Local\Temp\84cd51ef8ad4c12c88e1d6c26be1d0b5883a844b5a8a301c24114dfb7ea607b6.exe
      "C:\Users\Admin\AppData\Local\Temp\84cd51ef8ad4c12c88e1d6c26be1d0b5883a844b5a8a301c24114dfb7ea607b6.exe"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1580

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\84cd51ef8ad4c12c88e1d6c26be1d0b5883a844b5a8a301c24114dfb7ea607b6.exe.log

    Filesize

    1KB

    MD5

    b5291f3dcf2c13784e09a057f2e43d13

    SHA1

    fbb72f4b04269e0d35b1d9c29d02d63dbc7ad07e

    SHA256

    ad995b51344d71019f96fc3a424de00256065daad8595ff599f6849c87ae75ce

    SHA512

    11c89caac425bccaa24e2bb24c6f2b4e6d6863278bf8a5304a42bb44475b08ca586e09143e7d5b14db7f1cd9adacd5358769e0d999dc348073431031067bd4d4

  • memory/604-131-0x0000000005120000-0x00000000056C4000-memory.dmp

    Filesize

    5.6MB

  • memory/604-132-0x0000000004C50000-0x0000000004CE2000-memory.dmp

    Filesize

    584KB

  • memory/604-133-0x0000000004C20000-0x0000000004C2A000-memory.dmp

    Filesize

    40KB

  • memory/604-134-0x00000000057D0000-0x0000000005846000-memory.dmp

    Filesize

    472KB

  • memory/604-135-0x0000000005850000-0x000000000586E000-memory.dmp

    Filesize

    120KB

  • memory/604-130-0x0000000000110000-0x0000000000270000-memory.dmp

    Filesize

    1.4MB

  • memory/1580-137-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1580-139-0x0000000006520000-0x0000000006586000-memory.dmp

    Filesize

    408KB

  • memory/1580-140-0x0000000005123000-0x0000000005125000-memory.dmp

    Filesize

    8KB

  • memory/1580-141-0x0000000006EA0000-0x0000000006EF0000-memory.dmp

    Filesize

    320KB

  • memory/1580-142-0x0000000007120000-0x00000000071BC000-memory.dmp

    Filesize

    624KB