Analysis

  • max time kernel
    160s
  • max time network
    177s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-10-2023 19:14

General

  • Target

    a507cbaa0161cd7360b5140f2e3421c3_JC.exe

  • Size

    593KB

  • MD5

    a507cbaa0161cd7360b5140f2e3421c3

  • SHA1

    6d5dd32898f86afb249d9e4233887c2d220e73cc

  • SHA256

    ab48d5404ce98ac3ae56c449fe661c0acf73fa4fd2182a2f39e61c02052092fe

  • SHA512

    d3fd9dedd8deca889ce1c407fe144e713f61ea6b5b5a7dc0c86f14c3c4c87310ebcb07562c997481c84c2ea6c09f6e48da2b1b28ca9ffdae2b437c9a010b3176

  • SSDEEP

    12288:2QgTT/g4DuZHpUL41mwVen6GP7v97qyzcj+4j:29k4Dm1mwVdOJX6+O

Malware Config

Signatures

  • Detect Neshta payload 14 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
  • Reads user/profile data of web browsers 2 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).

  • Modifies registry class 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a507cbaa0161cd7360b5140f2e3421c3_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\a507cbaa0161cd7360b5140f2e3421c3_JC.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3492
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a507cbaa0161cd7360b5140f2e3421c3_JC.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a507cbaa0161cd7360b5140f2e3421c3_JC.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:4932

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe

    Filesize

    2.4MB

    MD5

    8ffc3bdf4a1903d9e28b99d1643fc9c7

    SHA1

    919ba8594db0ae245a8abd80f9f3698826fc6fe5

    SHA256

    8268d3fefe8ca96a25a73690d14bacf644170ab5e9e70d2f8eeb350a4c83f9f6

    SHA512

    0b94ead97374d74eaee87e7614ddd3911d2cf66d4c49abbfd06b02c03e5dd56fd00993b4947e8a4bcd9d891fa39cab18cc6b61efc7d0812e91eb3aea9cd1a427

  • C:\Users\Admin\AppData\Local\Temp\3582-490\a507cbaa0161cd7360b5140f2e3421c3_JC.exe

    Filesize

    552KB

    MD5

    6c3fc532e62dd200fde7ed4270da9a82

    SHA1

    2d9feef911ef4fcba13c4e755fb7a00a031f1ae0

    SHA256

    8f4447b0dbd915db524a9e21418120509307c980e04b717eff189a6643920bbc

    SHA512

    266cbec59e668b7c2afefaa5b4471ffe1560aa9ab8eb38eafdd19b342cc67860b9c4e123ecb20426e8af84d317cacdd450f11d111d0eaf2ae695817f35b5c48e

  • C:\Users\Admin\AppData\Local\Temp\3582-490\a507cbaa0161cd7360b5140f2e3421c3_JC.exe

    Filesize

    552KB

    MD5

    6c3fc532e62dd200fde7ed4270da9a82

    SHA1

    2d9feef911ef4fcba13c4e755fb7a00a031f1ae0

    SHA256

    8f4447b0dbd915db524a9e21418120509307c980e04b717eff189a6643920bbc

    SHA512

    266cbec59e668b7c2afefaa5b4471ffe1560aa9ab8eb38eafdd19b342cc67860b9c4e123ecb20426e8af84d317cacdd450f11d111d0eaf2ae695817f35b5c48e

  • memory/3492-85-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3492-14-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3492-13-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3492-29-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3492-81-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3492-8-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3492-86-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3492-88-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3492-91-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3492-92-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3492-93-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3492-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3492-103-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB