Analysis

  • max time kernel
    141s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/07/2023, 08:41

General

  • Target
    INV 88000354.exe
  • Size 701KB
  • Sample230724-klez1scd3s
  • SHA256 b2dcddc1c5777df047cd93bfbe626778c4fd4974a6f82f14716c8a27c7f72417
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • snakekeylogger

Credentials
  • Protocol

    smtp

  • Host

    smtp.mtbooks.com.mx

  • Port

    587

  • Password

    ^QGUcHQjx3

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 2 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • 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 3 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: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\INV 88000354.exe
    "C:\Users\Admin\AppData\Local\Temp\INV 88000354.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1128
    • C:\Users\Admin\AppData\Local\Temp\INV 88000354.exe
      "C:\Users\Admin\AppData\Local\Temp\INV 88000354.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2080

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        INV 88000354.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\INV 88000354.exe.log
        • Size 1KB
        • SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
        • MD5 SHA1 SHA512

        memory/1128-141-0x00000000058F0000-0x0000000005900000-memory.dmp

        memory/1128-134-0x0000000074D30000-0x00000000754E0000-memory.dmp

        memory/1128-136-0x00000000057A0000-0x0000000005832000-memory.dmp

        memory/1128-137-0x00000000058F0000-0x0000000005900000-memory.dmp

        memory/1128-138-0x0000000005850000-0x000000000585A000-memory.dmp

        memory/1128-139-0x0000000005B10000-0x0000000005BAC000-memory.dmp

        memory/1128-135-0x0000000005D50000-0x00000000062F4000-memory.dmp

        memory/1128-140-0x0000000074D30000-0x00000000754E0000-memory.dmp

        memory/1128-146-0x0000000074D30000-0x00000000754E0000-memory.dmp

        memory/1128-133-0x0000000000D30000-0x0000000000DE6000-memory.dmp

        memory/2080-142-0x0000000000400000-0x0000000000426000-memory.dmp

        memory/2080-145-0x0000000074D30000-0x00000000754E0000-memory.dmp

        memory/2080-147-0x0000000005310000-0x0000000005320000-memory.dmp

        memory/2080-148-0x0000000006370000-0x0000000006532000-memory.dmp

        memory/2080-149-0x0000000074D30000-0x00000000754E0000-memory.dmp

        memory/2080-150-0x0000000005310000-0x0000000005320000-memory.dmp