Analysis

  • max time kernel
    73s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    28/04/2022, 06:10

General

  • Target
    Quotation Forms.exe
  • Size 452KB
  • Sample220428-gw14fsfcbl
  • SHA256 24f0dacae3f61ddb0d4261a78b6493724bd2a83633e7bb4c96659bee2775cfd8
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • snakekeylogger

C2
  • https://api.telegram.org/bot5206100572:AAFn3MxBuN0bjQhfY8y1ed9Iwi79LyIe75I/sendMessage?chat_id=2135869667

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Quotation Forms.exe
    "C:\Users\Admin\AppData\Local\Temp\Quotation Forms.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3588
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eUYfSNvGrn" /XML "C:\Users\Admin\AppData\Local\Temp\tmpED14.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3808
    • C:\Users\Admin\AppData\Local\Temp\Quotation Forms.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:240

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        Quotation Forms.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Quotation Forms.exe.log
        • Size 1KB
        • SHA256 c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553
        • MD5 SHA1 SHA512

        tmpED14.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmpED14.tmp
        • Size 1KB
        • SHA256 40c35862b314c8591a36be4fc9ccff7a0392449310ca36020ef7d35b9b101af9
        • MD5 SHA1 SHA512

        memory/240-139-0x0000000000400000-0x0000000000426000-memory.dmp

        memory/240-141-0x0000000006C20000-0x0000000006DE2000-memory.dmp

        memory/3588-130-0x0000000000050000-0x00000000000C8000-memory.dmp

        memory/3588-131-0x0000000004A20000-0x0000000004ABC000-memory.dmp

        memory/3588-132-0x00000000050A0000-0x0000000005644000-memory.dmp

        memory/3588-133-0x0000000004B90000-0x0000000004C22000-memory.dmp

        memory/3588-134-0x0000000004B10000-0x0000000004B1A000-memory.dmp

        memory/3588-135-0x0000000004D20000-0x0000000004D76000-memory.dmp