Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05-11-2024 10:09

General

  • Target

    1b7a433a9c38aeafd602658c9d08b16da9cb5d7c41bc193ddb0d62dc7cb3ed13N.exe

  • Size

    639KB

  • MD5

    f0bff70472a4eb96a3906731c4b88bf0

  • SHA1

    af1941df703d141e9166c91d83ee848ca2cd78b7

  • SHA256

    1b7a433a9c38aeafd602658c9d08b16da9cb5d7c41bc193ddb0d62dc7cb3ed13

  • SHA512

    66c731b7d14379e6c1310368ed30c935695870612e48bd212d7afdfbc997e3b517c25a5f6ac558ebe5c3b78b32105208c85e49834bb9e0473a9e3c484c664cba

  • SSDEEP

    6144:Y9evm9HS2zB5jL5WYWgrm/PTeEZwmsJUGI6hB4cQ1S:Q9HnB5P5ZWgM7RbsJhI6kcQ1S

Malware Config

Signatures

  • Neshta

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

  • Neshta family
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 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 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1b7a433a9c38aeafd602658c9d08b16da9cb5d7c41bc193ddb0d62dc7cb3ed13N.exe
    "C:\Users\Admin\AppData\Local\Temp\1b7a433a9c38aeafd602658c9d08b16da9cb5d7c41bc193ddb0d62dc7cb3ed13N.exe"
    1⤵
    • Loads dropped DLL
    • 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:2208
    • C:\Users\Admin\AppData\Local\Temp\3582-490\1b7a433a9c38aeafd602658c9d08b16da9cb5d7c41bc193ddb0d62dc7cb3ed13N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\1b7a433a9c38aeafd602658c9d08b16da9cb5d7c41bc193ddb0d62dc7cb3ed13N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2480

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

    Filesize

    547KB

    MD5

    f19b74c9cd59051a61c21b502bb609ab

    SHA1

    291cdaf2dd5456ba2c23c8df50166de9a5856072

    SHA256

    9ca3c73bf8b5cce7511463b26059d274a0797bcfa5168be4f06db776678ba90c

    SHA512

    9bcd23247b6b57f181dd9d8443426d17637a13be8c29f0a09926995b8fd0078c6c9fe245961b67a5e759f03a597efbebf1cbb36ed3e2d2136592fe98fd24088a

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Users\Admin\AppData\Local\Temp\3582-490\1b7a433a9c38aeafd602658c9d08b16da9cb5d7c41bc193ddb0d62dc7cb3ed13N.exe

    Filesize

    599KB

    MD5

    e50751d0f005b47b8b783ba71a00b9ef

    SHA1

    156865c804eccac0738441532275c980a197b2ba

    SHA256

    3c147ee21089ab5819227bc8c15123ed3d51800a91d5bc7bae988e9c522d4c4d

    SHA512

    d011f5082842a8207d8a02f730c5bbfea82b823d9a3e815b669e80c7a4efe6746320d4ad4599073b3a541002ed627965dfd3eaa2e36fc559b283ce5531b23790

  • memory/2208-84-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2208-86-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB