Analysis

  • max time kernel
    95s
  • max time network
    112s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2024 22:05

General

  • Target

    a660393dc4c04c61ddf040a2ef16e0e4dc92d983a13e67e2ee111a93c6514f4cN.exe

  • Size

    313KB

  • MD5

    00c3a7f52ad5e4ab5668619373a37c30

  • SHA1

    9e6cb1e60c4acd3aa88ac403163c74f7af48ed32

  • SHA256

    a660393dc4c04c61ddf040a2ef16e0e4dc92d983a13e67e2ee111a93c6514f4c

  • SHA512

    16d9cfe4bc24c39449268412f71fd6132a5720d6fcbae1c20b9d0889fcfe3655b539acadfda06c35bd0dd73d060035336a3f16250096a565e79279c4a8d9ee0b

  • SSDEEP

    3072:sr85CkR1eRfTslV/gLQ4U4StFd5xP7GUMqj83EMykGatyci6AYmDjObQAa9gQkrM:k9kRkRr8V/gnYTqbqj8TkctmDKIEFM5

Malware Config

Signatures

  • Detect Neshta payload 4 IoCs
  • Neshta

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

  • Neshta family
  • 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 3 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\a660393dc4c04c61ddf040a2ef16e0e4dc92d983a13e67e2ee111a93c6514f4cN.exe
    "C:\Users\Admin\AppData\Local\Temp\a660393dc4c04c61ddf040a2ef16e0e4dc92d983a13e67e2ee111a93c6514f4cN.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:4960
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a660393dc4c04c61ddf040a2ef16e0e4dc92d983a13e67e2ee111a93c6514f4cN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a660393dc4c04c61ddf040a2ef16e0e4dc92d983a13e67e2ee111a93c6514f4cN.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2372

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE

    Filesize

    86KB

    MD5

    3b73078a714bf61d1c19ebc3afc0e454

    SHA1

    9abeabd74613a2f533e2244c9ee6f967188e4e7e

    SHA256

    ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29

    SHA512

    75959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4

  • C:\Users\Admin\AppData\Local\Temp\3582-490\a660393dc4c04c61ddf040a2ef16e0e4dc92d983a13e67e2ee111a93c6514f4cN.exe

    Filesize

    272KB

    MD5

    5c18680f5a9b2219df2e1b0fd3bf1a74

    SHA1

    ba34007cf11eae92dd6ddc423fc7217c71dacea8

    SHA256

    73f612e89cb5896d4297aa10ce5ffa25e02d47ce2032f9841d0026bf0ffb307f

    SHA512

    47249aac1c772b9845129a1dad90ca9e091fcd493f01271ee75a3cec9fe36de4d6b22af0cfdb8976dd3b207954d9053958109440e9c1af449aa5d7ed8e3a498a

  • memory/2372-95-0x000000005F000000-0x000000005F011000-memory.dmp

    Filesize

    68KB

  • memory/4960-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4960-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4960-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB