Analysis

  • max time kernel
    157s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    05-02-2022 05:25

General

  • Target

    11bd40a0954b6ed9dcdad37325e5c8e2e7f273502f65e4da719dfbfa227bde9c.exe

  • Size

    1.8MB

  • MD5

    d25d3cc452e2fca0a82c59f3843c1e9a

  • SHA1

    8a4e91c5e24813483fc81db1f334cb4efe457601

  • SHA256

    11bd40a0954b6ed9dcdad37325e5c8e2e7f273502f65e4da719dfbfa227bde9c

  • SHA512

    1e23b13f5c2953edcd200701e3f50d3b82a6d7138e7cb1af2a3200dc37fe4786ac868b70e20a9d6442b57e8f15b8f3a1c470aa482dbdfa250431c14c4eec36d7

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
  • Sets service image path in registry 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\11bd40a0954b6ed9dcdad37325e5c8e2e7f273502f65e4da719dfbfa227bde9c.exe
    "C:\Users\Admin\AppData\Local\Temp\11bd40a0954b6ed9dcdad37325e5c8e2e7f273502f65e4da719dfbfa227bde9c.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks BIOS information in registry
    • Checks computer location settings
    • 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:2564
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:3900
  • C:\Windows\System32\WaaSMedicAgent.exe
    C:\Windows\System32\WaaSMedicAgent.exe 6b3ed221dd0fb79f54c4b2b69a4b907c 50D8FqWaHkut9i7c1mwUdA.0.1.0.0.0
    1⤵
    • Modifies data under HKEY_USERS
    PID:1260
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k NetworkService -p
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    PID:2796

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2564-131-0x0000000000400000-0x000000000075D000-memory.dmp
    Filesize

    3.4MB

  • memory/2564-134-0x0000000004940000-0x0000000004941000-memory.dmp
    Filesize

    4KB

  • memory/2564-133-0x0000000004950000-0x0000000004952000-memory.dmp
    Filesize

    8KB

  • memory/2564-132-0x0000000004960000-0x0000000004961000-memory.dmp
    Filesize

    4KB

  • memory/2564-136-0x0000000004990000-0x0000000004991000-memory.dmp
    Filesize

    4KB

  • memory/2564-135-0x0000000004980000-0x0000000004981000-memory.dmp
    Filesize

    4KB

  • memory/2564-137-0x0000000004970000-0x0000000004971000-memory.dmp
    Filesize

    4KB

  • memory/2564-138-0x00000000049A0000-0x00000000049A1000-memory.dmp
    Filesize

    4KB