Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-04-2024 19:08

General

  • Target

    1b75249568f2c85b8a7ebf8174e1cb39f78d9ad10db0efca274f1d3fd5c60569.exe

  • Size

    732KB

  • MD5

    73bd35799d62647fb17973ac9f26156e

  • SHA1

    32bf5a89d62ad2566f7c9b58073176223d8a26e6

  • SHA256

    1b75249568f2c85b8a7ebf8174e1cb39f78d9ad10db0efca274f1d3fd5c60569

  • SHA512

    07875aa1e921cdc6c010e069bbc94a87eb5b8d4892ea6050b87688b5d773067eb9c73e5ba8407d147263c44ff366ab7b622eb2c3636aefef78df1a1f40976775

  • SSDEEP

    12288:RDfKb7nH5lrPo37AzHTA63I0ihE4aEJOrNv4gM/RetAseY/XExy8906:xfKbT5lrPo37AzHTA63/cfa74F0tAi/Q

Malware Config

Signatures

  • Detect Neshta payload 9 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 WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1b75249568f2c85b8a7ebf8174e1cb39f78d9ad10db0efca274f1d3fd5c60569.exe
    "C:\Users\Admin\AppData\Local\Temp\1b75249568f2c85b8a7ebf8174e1cb39f78d9ad10db0efca274f1d3fd5c60569.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:4672
    • C:\Users\Admin\AppData\Local\Temp\3582-490\1b75249568f2c85b8a7ebf8174e1cb39f78d9ad10db0efca274f1d3fd5c60569.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\1b75249568f2c85b8a7ebf8174e1cb39f78d9ad10db0efca274f1d3fd5c60569.exe"
      2⤵
      • Executes dropped EXE
      PID:3768

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\1b75249568f2c85b8a7ebf8174e1cb39f78d9ad10db0efca274f1d3fd5c60569.exe

    Filesize

    691KB

    MD5

    ced3f8d362a30d0bfb3083e8d4de5b21

    SHA1

    712374a5b0b477a24b06f8d3f87f9aa96e25026b

    SHA256

    80b5a86794bf61b8bb04da495a464135e6f3dee0d79cb59e50fbb16c1c9f5ccb

    SHA512

    5d77d61d38f2a2fc3653f6ed2026f02c838708536696997b710938d1f35b8f700eab6f50fa15283018bcd28e18de3af1576a9f2fc049c300c86d36858ea9f45b

  • memory/3768-12-0x0000000002200000-0x0000000002201000-memory.dmp

    Filesize

    4KB

  • memory/3768-13-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4672-28-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4672-102-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4672-103-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4672-104-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4672-105-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4672-106-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4672-107-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4672-110-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB