Analysis

  • max time kernel
    94s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-12-2024 16:03

General

  • Target

    255b2ef2814104e37c5edbea512949d0dd4f1505940b2b938cec023fc549bb98N.exe

  • Size

    352KB

  • MD5

    f0e50342d468ade1ad7602f116098120

  • SHA1

    b4e5c595c3666e72b3a3b475e346ca6f1145f06d

  • SHA256

    255b2ef2814104e37c5edbea512949d0dd4f1505940b2b938cec023fc549bb98

  • SHA512

    33131ffdd98013b3fc4233e7ab779fd125b896dd39c61d235f425732a7c5d73ea6756e6983ba0dab1b790cf91ec81abb3bd775645ada33489ec64105ae932dd8

  • SSDEEP

    6144:k96F80asTAA31APuwfGMolaSB5mmEer67R+SgZ:fVasH0WIucArKESgZ

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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\255b2ef2814104e37c5edbea512949d0dd4f1505940b2b938cec023fc549bb98N.exe
    "C:\Users\Admin\AppData\Local\Temp\255b2ef2814104e37c5edbea512949d0dd4f1505940b2b938cec023fc549bb98N.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:1600
    • C:\Users\Admin\AppData\Local\Temp\3582-490\255b2ef2814104e37c5edbea512949d0dd4f1505940b2b938cec023fc549bb98N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\255b2ef2814104e37c5edbea512949d0dd4f1505940b2b938cec023fc549bb98N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4580

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\255b2ef2814104e37c5edbea512949d0dd4f1505940b2b938cec023fc549bb98N.exe

    Filesize

    312KB

    MD5

    9ec8d5d3e702be9df771cf7ed5e526dd

    SHA1

    a42784f26055660cdeb47f0e40a8a438572589c7

    SHA256

    d118439fe5736bb2dd1a330befde1f8c517b2bd2809a8f5573f367d7debd9ebe

    SHA512

    ea27ebe029e81853a27f9becdc35a6e214d109b29756fd571e06a4e05d66cd3263ed132babb22ac82880ac5ab09372f1841ebb4b5facb77dad1b14731c742234

  • memory/1600-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1600-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1600-100-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB