Analysis

  • max time kernel
    100s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/04/2023, 17:23

General

  • Target
    PO 876YUIYT.xlsx.exe
  • Size 878KB
  • Sample230416-vx4smacd71
  • SHA256 6d5571a7a6c0286f8d7e41b94a1de3d63fbc2cfd06e52b9040767a47d0ae416c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • snakekeylogger

C2
  • https://api.telegram.org/bot5818680343:AAGVJsfIHcopySiifMCdAaFCv-ICp2_Yo_M/sendMessage?chat_id=5765702254

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 3 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 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\PO 876YUIYT.xlsx.exe
    "C:\Users\Admin\AppData\Local\Temp\PO 876YUIYT.xlsx.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3964
    • C:\Users\Admin\AppData\Local\Temp\PO 876YUIYT.xlsx.exe
      "C:\Users\Admin\AppData\Local\Temp\PO 876YUIYT.xlsx.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:3012

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        PO 876YUIYT.xlsx.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\PO 876YUIYT.xlsx.exe.log
        • Size 1KB
        • SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
        • MD5 SHA1 SHA512

        memory/3012-140-0x0000000000400000-0x0000000000426000-memory.dmp

        memory/3012-143-0x0000000005670000-0x0000000005680000-memory.dmp

        memory/3012-144-0x0000000006AB0000-0x0000000006C72000-memory.dmp

        memory/3012-145-0x0000000005670000-0x0000000005680000-memory.dmp

        memory/3964-133-0x0000000000710000-0x00000000007F2000-memory.dmp

        memory/3964-134-0x00000000056E0000-0x0000000005C84000-memory.dmp

        memory/3964-135-0x00000000051D0000-0x0000000005262000-memory.dmp

        memory/3964-136-0x0000000005190000-0x000000000519A000-memory.dmp

        memory/3964-137-0x0000000005410000-0x0000000005420000-memory.dmp

        memory/3964-138-0x0000000005410000-0x0000000005420000-memory.dmp

        memory/3964-139-0x0000000006B70000-0x0000000006C0C000-memory.dmp