Analysis

  • max time kernel
    147s
  • max time network
    26s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    05-02-2022 05:23

General

  • Target

    191467b08cdc5de298cf08cf0f2b8f9fcf054178a7d690edea1d03fb92cdb328.exe

  • Size

    1.8MB

  • MD5

    3f6221609c6f5ca2a23f3dc469a933b6

  • SHA1

    3869ee7e9059edca93afab11c46d0c7217f5a96b

  • SHA256

    191467b08cdc5de298cf08cf0f2b8f9fcf054178a7d690edea1d03fb92cdb328

  • SHA512

    0729f7deed181b02002260947a3927c15c96d4cbbcba37016ba36bb7dbefb54ecff6aad40c39e9603bb94ed5449d5af58b297d9768892315b51b58797a197cbf

Malware Config

Signatures

  • Detect Neshta Payload 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

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

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • 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). Likely ransomware behaviour.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\191467b08cdc5de298cf08cf0f2b8f9fcf054178a7d690edea1d03fb92cdb328.exe
    "C:\Users\Admin\AppData\Local\Temp\191467b08cdc5de298cf08cf0f2b8f9fcf054178a7d690edea1d03fb92cdb328.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    PID:1616

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1616-54-0x0000000076041000-0x0000000076043000-memory.dmp
    Filesize

    8KB

  • memory/1616-55-0x0000000000400000-0x000000000077D000-memory.dmp
    Filesize

    3.5MB

  • memory/1616-56-0x00000000042A0000-0x00000000042A1000-memory.dmp
    Filesize

    4KB

  • memory/1616-57-0x0000000004270000-0x0000000004272000-memory.dmp
    Filesize

    8KB

  • memory/1616-58-0x0000000004260000-0x0000000004261000-memory.dmp
    Filesize

    4KB

  • memory/1616-59-0x00000000042E0000-0x00000000042E1000-memory.dmp
    Filesize

    4KB

  • memory/1616-60-0x0000000004300000-0x0000000004301000-memory.dmp
    Filesize

    4KB

  • memory/1616-61-0x00000000042C0000-0x00000000042C1000-memory.dmp
    Filesize

    4KB

  • memory/1616-62-0x00000000042F0000-0x00000000042F1000-memory.dmp
    Filesize

    4KB

  • memory/1616-63-0x00000000042D0000-0x00000000042D1000-memory.dmp
    Filesize

    4KB

  • memory/1616-64-0x00000000042B0000-0x00000000042B1000-memory.dmp
    Filesize

    4KB

  • memory/1616-65-0x0000000004320000-0x0000000004321000-memory.dmp
    Filesize

    4KB

  • memory/1616-66-0x0000000004310000-0x0000000004311000-memory.dmp
    Filesize

    4KB