Analysis

  • max time kernel
    92s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-12-2024 22:50

General

  • Target

    b3c4c8244720c6bac496d26596e0f824d5cb2a2c6cd99849efaf4945ffffac1cN.exe

  • Size

    160KB

  • MD5

    35ff3e4f329cac582296b88d288eee40

  • SHA1

    5cb69c4f931d0ab99b3cebd3c02e2d70ef6d9cab

  • SHA256

    b3c4c8244720c6bac496d26596e0f824d5cb2a2c6cd99849efaf4945ffffac1c

  • SHA512

    e6613ed1ca3bffce335f19b9f49fe363db214af7661a4dc15c693fe8439ed6d5a05256ac4c10fca8f9dd6b50a2294a3e33c802b232bb8ae96451af82dbd9ee67

  • SSDEEP

    3072:sr85CN5E21KMQTy2EUEPgOQoF5SCcNjkjj0idlwA8IXFh:k9zfQm2EUEPRn9cyjDdlJ8IXFh

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\b3c4c8244720c6bac496d26596e0f824d5cb2a2c6cd99849efaf4945ffffac1cN.exe
    "C:\Users\Admin\AppData\Local\Temp\b3c4c8244720c6bac496d26596e0f824d5cb2a2c6cd99849efaf4945ffffac1cN.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:1476
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b3c4c8244720c6bac496d26596e0f824d5cb2a2c6cd99849efaf4945ffffac1cN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b3c4c8244720c6bac496d26596e0f824d5cb2a2c6cd99849efaf4945ffffac1cN.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3304

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\b3c4c8244720c6bac496d26596e0f824d5cb2a2c6cd99849efaf4945ffffac1cN.exe

    Filesize

    119KB

    MD5

    ed1ded0bc317f5895814e211d26f9e5b

    SHA1

    2070f713d44a0fd1c7fe4ec4b5537ebe67add233

    SHA256

    bf408a3a03f66703d875bb9ffd0b4a577ff51eda85c4086c15e9ef85f447bc83

    SHA512

    739ab8003c53f673da40e3ef5a1f46b9dcd0e2f7dd40f4f7733165d36d3a192c0a088c82cf5044feb458c25e47165fbe8248cafe1ed1ee495ff336ad3273e1bb

  • memory/1476-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1476-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1476-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB