Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-12-2024 04:39

General

  • Target

    b911d1f71c89509897ab5216377d29272c5d8ef1e42425d2f8a62cb89d219baf.exe

  • Size

    1.5MB

  • MD5

    546ce74e556c10ba47338c75f4ace22f

  • SHA1

    3340e0a017aa3581fbb5a55a723978d15b984921

  • SHA256

    b911d1f71c89509897ab5216377d29272c5d8ef1e42425d2f8a62cb89d219baf

  • SHA512

    4289b3d0d82a679b8561a9a036d79884af305dfb3333f6ad473f7cc1300dee062c50f1809ef953881d19e2edeedb811efe6f797f6f42d39860a67032f6a77449

  • SSDEEP

    24576:tE/a5cYcrsjcKcq2PUD81kVycD3OQacEmAf7ppsLBOHh2xtAC+:eSxncjQDxaMAyA

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 WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b911d1f71c89509897ab5216377d29272c5d8ef1e42425d2f8a62cb89d219baf.exe
    "C:\Users\Admin\AppData\Local\Temp\b911d1f71c89509897ab5216377d29272c5d8ef1e42425d2f8a62cb89d219baf.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:4088
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b911d1f71c89509897ab5216377d29272c5d8ef1e42425d2f8a62cb89d219baf.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b911d1f71c89509897ab5216377d29272c5d8ef1e42425d2f8a62cb89d219baf.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4880

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\b911d1f71c89509897ab5216377d29272c5d8ef1e42425d2f8a62cb89d219baf.exe

    Filesize

    1.4MB

    MD5

    0d952291d5a8c9a89507b9026902e73d

    SHA1

    1206a7fcac73817cff9d5e38201c8db3c04c2ca7

    SHA256

    4a8880b2b29d79b1ad446cf0e1c82e138a973df9221457ca9259bc3cd88f60e2

    SHA512

    b24cc2b92ae38f923148166990b21b992747e8133244519391b01819a2029e9cc050e7c4f82c6234dccf9bebaa79370879a7edc08d13dc2a679ef716ab331074

  • memory/4088-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4088-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4088-100-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4880-12-0x0000000000750000-0x0000000000751000-memory.dmp

    Filesize

    4KB

  • memory/4880-96-0x0000000000400000-0x0000000000577000-memory.dmp

    Filesize

    1.5MB