Analysis

  • max time kernel
    105s
  • max time network
    108s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/07/2024, 16:28

General

  • Target
    e1a072ea7118ea380637c7cd31a9b440N.exe
  • Size 346KB
  • Sample240725-tythls1elk
  • SHA256 05fc7096e891bc3b34679c39aedd84dad708002fc0ea0fafe814edf29c5fc488
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect Neshta payload 5 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e1a072ea7118ea380637c7cd31a9b440N.exe
    "C:\Users\Admin\AppData\Local\Temp\e1a072ea7118ea380637c7cd31a9b440N.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3344
    • C:\Users\Admin\AppData\Local\Temp\3582-490\e1a072ea7118ea380637c7cd31a9b440N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\e1a072ea7118ea380637c7cd31a9b440N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:972

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        ACROTE~1.EXE

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE
        • Size 86KB
        • SHA256 ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29
        • MD5 SHA1 SHA512 SSDEEP

        e1a072ea7118ea380637c7cd31a9b440N.exe

        • Path C:\Users\Admin\AppData\Local\Temp\3582-490\e1a072ea7118ea380637c7cd31a9b440N.exe
        • Size 306KB
        • SHA256 f2f092a9d1d44657fe0d3878b8582e1155de4e11427cefda7f6bdbd5c2300f7a
        • MD5 SHA1 SHA512 SSDEEP

        memory/3344-95-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3344-96-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3344-97-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3344-99-0x0000000000400000-0x000000000041B000-memory.dmp