Analysis

  • max time kernel
    165s
  • max time network
    178s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-12-2023 05:00

General

  • Target

    0f6181ddbcd053e6b7f391abbcdc27c5.exe

  • Size

    233KB

  • MD5

    0f6181ddbcd053e6b7f391abbcdc27c5

  • SHA1

    5aae26bc5792ff2015251552c5fbf0a77dce1dca

  • SHA256

    3c33d10e5a6aaa86c69f0740de2ac08bb92aa3d715454b94438d217098bb1ad1

  • SHA512

    a0d935ffc87eb5d4a708995d11c9cb141c8783a9e619479e991d67182326694e065f364d62584e8c51a459c52756bda44c874297d6203cc54ac8f851c91818da

  • SSDEEP

    3072:sr85C1d96HM0XU+aDe5UEjmIlmijI7rUGimM+M4MCimr4O7OAGBuHvsesf3nW:k9bn+aC1meyUGimM+wCimFOAzA3W

Malware Config

Signatures

  • Detect Neshta payload 13 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
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 47 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0f6181ddbcd053e6b7f391abbcdc27c5.exe
    "C:\Users\Admin\AppData\Local\Temp\0f6181ddbcd053e6b7f391abbcdc27c5.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1816
    • C:\Users\Admin\AppData\Local\Temp\3582-490\0f6181ddbcd053e6b7f391abbcdc27c5.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\0f6181ddbcd053e6b7f391abbcdc27c5.exe"
      2⤵
      • Executes dropped EXE
      • Modifies registry class
      PID:2584

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\0f6181ddbcd053e6b7f391abbcdc27c5.exe

    Filesize

    192KB

    MD5

    b2c168fd95e5a9f02bd66b46f16c9138

    SHA1

    81270014e44a7624f2e983667a85cf794e6a75b3

    SHA256

    701b6ed1712f12edbb9ab7660e7d5e8b92900ef57c90b8c15483781fc3d74674

    SHA512

    747d888fc6dfea7f2a1f4300bfe469225cec1e6acdd1140693ba47816b32270f8fb949749d7f5cda988eb7df50a57bb5c7e1a21bdd622dc9e7f46c83d9703f01

  • memory/1816-26-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1816-21-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1816-30-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1816-29-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1816-23-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1816-28-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1816-2-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1816-22-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1816-19-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1816-24-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1816-25-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1816-0-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1816-27-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2584-20-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2584-17-0x00000000022C0000-0x00000000022C2000-memory.dmp

    Filesize

    8KB

  • memory/2584-15-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB