Analysis

  • max time kernel
    107s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    15-04-2022 16:12

General

  • Target

    554e73533c3dbdf6c4fa0d4a3404ef7997d05c0886ff65d9c8c538663550fd88.exe

  • Size

    1.0MB

  • MD5

    a427fa19edceed5c843947b91f52aea9

  • SHA1

    13d9e0da2f94c66f60d83e6cb67fba608ab6d4b4

  • SHA256

    554e73533c3dbdf6c4fa0d4a3404ef7997d05c0886ff65d9c8c538663550fd88

  • SHA512

    5cab06db2cb641e88a40e09b47b458e46330f475b960b7a1ac81f51b57c30e1e49b7fea47567c61be1ae31061d31132c3f6848f2f06de2e2cc61d20c236674e3

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 26 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\554e73533c3dbdf6c4fa0d4a3404ef7997d05c0886ff65d9c8c538663550fd88.exe
    "C:\Users\Admin\AppData\Local\Temp\554e73533c3dbdf6c4fa0d4a3404ef7997d05c0886ff65d9c8c538663550fd88.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3140
    • C:\Users\Admin\AppData\Local\Temp\554e73533c3dbdf6c4fa0d4a3404ef7997d05c0886ff65d9c8c538663550fd88.exe
      "C:\Users\Admin\AppData\Local\Temp\554e73533c3dbdf6c4fa0d4a3404ef7997d05c0886ff65d9c8c538663550fd88.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:4316
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\554e73533c3dbdf6c4fa0d4a3404ef7997d05c0886ff65d9c8c538663550fd88.exe'
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4844

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\554e73533c3dbdf6c4fa0d4a3404ef7997d05c0886ff65d9c8c538663550fd88.exe.log

    Filesize

    1KB

    MD5

    17573558c4e714f606f997e5157afaac

    SHA1

    13e16e9415ceef429aaf124139671ebeca09ed23

    SHA256

    c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

    SHA512

    f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

  • memory/3140-130-0x0000000000970000-0x0000000000A7E000-memory.dmp

    Filesize

    1.1MB

  • memory/3140-131-0x0000000005470000-0x000000000550C000-memory.dmp

    Filesize

    624KB

  • memory/3140-132-0x0000000005AC0000-0x0000000006064000-memory.dmp

    Filesize

    5.6MB

  • memory/3140-133-0x0000000005510000-0x00000000055A2000-memory.dmp

    Filesize

    584KB

  • memory/3140-134-0x0000000005430000-0x000000000543A000-memory.dmp

    Filesize

    40KB

  • memory/3140-135-0x0000000005760000-0x00000000057B6000-memory.dmp

    Filesize

    344KB

  • memory/4316-140-0x0000000005693000-0x0000000005695000-memory.dmp

    Filesize

    8KB

  • memory/4316-136-0x0000000000000000-mapping.dmp

  • memory/4316-139-0x00000000075B0000-0x0000000007600000-memory.dmp

    Filesize

    320KB

  • memory/4316-137-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/4316-138-0x0000000006C40000-0x0000000006CA6000-memory.dmp

    Filesize

    408KB

  • memory/4844-144-0x0000000005160000-0x0000000005788000-memory.dmp

    Filesize

    6.2MB

  • memory/4844-143-0x00000000026C0000-0x00000000026F6000-memory.dmp

    Filesize

    216KB

  • memory/4844-141-0x0000000000000000-mapping.dmp

  • memory/4844-145-0x0000000005840000-0x0000000005862000-memory.dmp

    Filesize

    136KB

  • memory/4844-146-0x00000000058E0000-0x0000000005946000-memory.dmp

    Filesize

    408KB

  • memory/4844-147-0x0000000005970000-0x000000000598E000-memory.dmp

    Filesize

    120KB

  • memory/4844-148-0x0000000002735000-0x0000000002737000-memory.dmp

    Filesize

    8KB

  • memory/4844-149-0x0000000007630000-0x0000000007CAA000-memory.dmp

    Filesize

    6.5MB

  • memory/4844-150-0x00000000064D0000-0x00000000064EA000-memory.dmp

    Filesize

    104KB

  • memory/4844-151-0x0000000007050000-0x00000000070E6000-memory.dmp

    Filesize

    600KB

  • memory/4844-152-0x00000000065A0000-0x00000000065C2000-memory.dmp

    Filesize

    136KB