Analysis

  • max time kernel
    195s
  • max time network
    202s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220331-en
  • submitted
    14-04-2022 13:35

General

  • Target

    17a6fd7bcc92bc7d7888bec3f794b884349b1cde6a4bb701d12dc7815a74ddca.exe

  • Size

    1.3MB

  • MD5

    ba954d90751d0ba2a5add8586863f854

  • SHA1

    1cd8a5562e6d656d4d3c6fcda1490ee3ab31c4fe

  • SHA256

    17a6fd7bcc92bc7d7888bec3f794b884349b1cde6a4bb701d12dc7815a74ddca

  • SHA512

    0803f29e6ce290701fa9d2a531d16d9c4a89a6d8ee5856ec8e2b5367cdfb81ee5a055064d2197a044e65ff64ea4be0581a2da10a013ff850a3a3f71af184771a

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\17a6fd7bcc92bc7d7888bec3f794b884349b1cde6a4bb701d12dc7815a74ddca.exe
    "C:\Users\Admin\AppData\Local\Temp\17a6fd7bcc92bc7d7888bec3f794b884349b1cde6a4bb701d12dc7815a74ddca.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5032
    • C:\Users\Admin\AppData\Local\Temp\17a6fd7bcc92bc7d7888bec3f794b884349b1cde6a4bb701d12dc7815a74ddca.exe
      "C:\Users\Admin\AppData\Local\Temp\17a6fd7bcc92bc7d7888bec3f794b884349b1cde6a4bb701d12dc7815a74ddca.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:4260

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\17a6fd7bcc92bc7d7888bec3f794b884349b1cde6a4bb701d12dc7815a74ddca.exe.log

    Filesize

    1KB

    MD5

    b5291f3dcf2c13784e09a057f2e43d13

    SHA1

    fbb72f4b04269e0d35b1d9c29d02d63dbc7ad07e

    SHA256

    ad995b51344d71019f96fc3a424de00256065daad8595ff599f6849c87ae75ce

    SHA512

    11c89caac425bccaa24e2bb24c6f2b4e6d6863278bf8a5304a42bb44475b08ca586e09143e7d5b14db7f1cd9adacd5358769e0d999dc348073431031067bd4d4

  • memory/4260-137-0x0000000006FD0000-0x000000000706C000-memory.dmp

    Filesize

    624KB

  • memory/4260-136-0x0000000005243000-0x0000000005245000-memory.dmp

    Filesize

    8KB

  • memory/4260-135-0x0000000006D80000-0x0000000006DD0000-memory.dmp

    Filesize

    320KB

  • memory/4260-134-0x0000000006900000-0x0000000006966000-memory.dmp

    Filesize

    408KB

  • memory/4260-132-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/5032-127-0x00000000053D0000-0x00000000053DA000-memory.dmp

    Filesize

    40KB

  • memory/5032-130-0x0000000001310000-0x000000000132E000-memory.dmp

    Filesize

    120KB

  • memory/5032-129-0x00000000014E0000-0x0000000001556000-memory.dmp

    Filesize

    472KB

  • memory/5032-128-0x0000000005380000-0x0000000005924000-memory.dmp

    Filesize

    5.6MB

  • memory/5032-124-0x00000000008C0000-0x0000000000A1A000-memory.dmp

    Filesize

    1.4MB

  • memory/5032-126-0x0000000005420000-0x00000000054B2000-memory.dmp

    Filesize

    584KB

  • memory/5032-125-0x0000000005930000-0x0000000005ED4000-memory.dmp

    Filesize

    5.6MB