Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/11/2024, 20:09

General

  • Target

    1b3dd4888a715eecfbf69142085eccc92b5afa3c2015b5f884071e3c33a66234.exe

  • Size

    85KB

  • MD5

    fa1c8e647f1a5e728074779d86c03bd8

  • SHA1

    5e6f31a080bf918e5537a56e582744755caa0434

  • SHA256

    1b3dd4888a715eecfbf69142085eccc92b5afa3c2015b5f884071e3c33a66234

  • SHA512

    7a4448f50f6c5624c755077e2da6a7246aa47e27c4137699d2eb5a4c0123acda2c1c36f4d8c3a3131eb24e415aa507495eda302b02b2ec0d4f805ccaf8050db8

  • SSDEEP

    1536:JxqjQ+P04wsmJCMvc5TXdldV6OQGS2vhjp5gXUSZJxHxe5pvxJtnq7L:sr85C7Ttl6HB2vNnglJBxejvxG7L

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
  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • 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\1b3dd4888a715eecfbf69142085eccc92b5afa3c2015b5f884071e3c33a66234.exe
    "C:\Users\Admin\AppData\Local\Temp\1b3dd4888a715eecfbf69142085eccc92b5afa3c2015b5f884071e3c33a66234.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:4840
    • C:\Users\Admin\AppData\Local\Temp\3582-490\1b3dd4888a715eecfbf69142085eccc92b5afa3c2015b5f884071e3c33a66234.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\1b3dd4888a715eecfbf69142085eccc92b5afa3c2015b5f884071e3c33a66234.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4896

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\1b3dd4888a715eecfbf69142085eccc92b5afa3c2015b5f884071e3c33a66234.exe

    Filesize

    45KB

    MD5

    04e63b042b4e20c24a5a4455b26afb4e

    SHA1

    c9818ede523e03d6c2e6c6104a5b0f351a0d3993

    SHA256

    f478494bff4033ddb885ffff0e0177da412e1c8cd3569ef36defee45e2a5c0d4

    SHA512

    ccf0c12fddc94cfdd7009bf85a3e5d35c2671d382a66832f1afbed2b71f4f408cacc0bbae8199892892bd6301eaae36bef2b3280b15f2bf3067483646043b9ad

  • memory/4840-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4840-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4840-101-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4896-14-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB