Analysis

  • max time kernel
    134s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    14-04-2022 13:35

General

  • Target

    31053ec6498b7615703f08f5eb91b2900b92ae0d642f85a150641ebed8901941.exe

  • Size

    2.8MB

  • MD5

    b7a130a4c4376587d2a88d2e59a77272

  • SHA1

    6143ba63819253e6fb79c79ad03c231b8633747a

  • SHA256

    31053ec6498b7615703f08f5eb91b2900b92ae0d642f85a150641ebed8901941

  • SHA512

    6b69ccfe537be1e10603c3d70ffa45feb9c90d6406bba34824ced5eb9cf028d3e32f96f30e291d2e400407765a80d31035ddf897676c970222899996774b9b61

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
  • 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 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\31053ec6498b7615703f08f5eb91b2900b92ae0d642f85a150641ebed8901941.exe
    "C:\Users\Admin\AppData\Local\Temp\31053ec6498b7615703f08f5eb91b2900b92ae0d642f85a150641ebed8901941.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1672
    • C:\Users\Admin\AppData\Local\Temp\31053ec6498b7615703f08f5eb91b2900b92ae0d642f85a150641ebed8901941.exe
      "C:\Users\Admin\AppData\Local\Temp\31053ec6498b7615703f08f5eb91b2900b92ae0d642f85a150641ebed8901941.exe"
      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:4072
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\31053ec6498b7615703f08f5eb91b2900b92ae0d642f85a150641ebed8901941.exe'
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4036

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\31053ec6498b7615703f08f5eb91b2900b92ae0d642f85a150641ebed8901941.exe.log

    Filesize

    1KB

    MD5

    6dd2b2e332f641268ade3fbee81828a0

    SHA1

    fbb9ba6b2d8644acc81d1813df8394eb16935058

    SHA256

    4005814778c17ce5bb518ba97a0e3a7547e9fd54c736b45b145d51ae38e34f46

    SHA512

    30d7ef784b86b5184fd5d851bd3725325ffef723815107008b159b43b3e40fbbfc00f5ce071113aaa11334d5878e86da0bd4bef5d3d403622da4028311d1884f

  • memory/1672-131-0x0000000005B10000-0x00000000060B4000-memory.dmp

    Filesize

    5.6MB

  • memory/1672-132-0x0000000005600000-0x0000000005692000-memory.dmp

    Filesize

    584KB

  • memory/1672-133-0x00000000055A0000-0x00000000055AA000-memory.dmp

    Filesize

    40KB

  • memory/1672-134-0x0000000007CA0000-0x0000000007D06000-memory.dmp

    Filesize

    408KB

  • memory/1672-130-0x0000000000910000-0x0000000000BE6000-memory.dmp

    Filesize

    2.8MB

  • memory/4036-144-0x0000000005A30000-0x0000000005A52000-memory.dmp

    Filesize

    136KB

  • memory/4036-152-0x0000000007660000-0x000000000767A000-memory.dmp

    Filesize

    104KB

  • memory/4036-157-0x0000000007970000-0x0000000007978000-memory.dmp

    Filesize

    32KB

  • memory/4036-140-0x00000000029A0000-0x00000000029D6000-memory.dmp

    Filesize

    216KB

  • memory/4036-156-0x0000000007990000-0x00000000079AA000-memory.dmp

    Filesize

    104KB

  • memory/4036-155-0x0000000007880000-0x000000000788E000-memory.dmp

    Filesize

    56KB

  • memory/4036-143-0x00000000053C0000-0x00000000059E8000-memory.dmp

    Filesize

    6.2MB

  • memory/4036-154-0x00000000078D0000-0x0000000007966000-memory.dmp

    Filesize

    600KB

  • memory/4036-145-0x0000000005AD0000-0x0000000005B36000-memory.dmp

    Filesize

    408KB

  • memory/4036-146-0x0000000006350000-0x000000000636E000-memory.dmp

    Filesize

    120KB

  • memory/4036-147-0x00000000029E5000-0x00000000029E7000-memory.dmp

    Filesize

    8KB

  • memory/4036-148-0x0000000007550000-0x0000000007582000-memory.dmp

    Filesize

    200KB

  • memory/4036-149-0x0000000070200000-0x000000007024C000-memory.dmp

    Filesize

    304KB

  • memory/4036-150-0x00000000068F0000-0x000000000690E000-memory.dmp

    Filesize

    120KB

  • memory/4036-151-0x0000000007CC0000-0x000000000833A000-memory.dmp

    Filesize

    6.5MB

  • memory/4036-153-0x00000000076D0000-0x00000000076DA000-memory.dmp

    Filesize

    40KB

  • memory/4072-136-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/4072-141-0x0000000007AF0000-0x0000000007B8C000-memory.dmp

    Filesize

    624KB

  • memory/4072-142-0x00000000056E3000-0x00000000056E5000-memory.dmp

    Filesize

    8KB

  • memory/4072-139-0x0000000007180000-0x00000000071D0000-memory.dmp

    Filesize

    320KB