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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
    28/12/2024, 03:16

General

  • Target

    d83dc93cbbc191184601cc8042a56a212b14ba9f8d4b9043c7840c1e7407c063.exe

  • Size

    127KB

  • MD5

    5ec43c2eddc753d77897064714cb1f5b

  • SHA1

    9ffb38a4c069878e4d3b96f3c1128c4472d14f9f

  • SHA256

    d83dc93cbbc191184601cc8042a56a212b14ba9f8d4b9043c7840c1e7407c063

  • SHA512

    e53c321992a01da18e242860838c7218869dfeed0c89a748853ecfa7edf40dcc7bb057af93f41a91fc56c90848617186f3375fe1f2eca0aa676c3975a211c18d

  • SSDEEP

    3072:sr85C9VxbUzUo7Fys2bYPFIDiK0l2rRNuJ:k9Brb2WiK08rR2

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 1 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 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d83dc93cbbc191184601cc8042a56a212b14ba9f8d4b9043c7840c1e7407c063.exe
    "C:\Users\Admin\AppData\Local\Temp\d83dc93cbbc191184601cc8042a56a212b14ba9f8d4b9043c7840c1e7407c063.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:3788
    • C:\Users\Admin\AppData\Local\Temp\3582-490\d83dc93cbbc191184601cc8042a56a212b14ba9f8d4b9043c7840c1e7407c063.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\d83dc93cbbc191184601cc8042a56a212b14ba9f8d4b9043c7840c1e7407c063.exe"
      2⤵
      • Executes dropped EXE
      PID:4540

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\d83dc93cbbc191184601cc8042a56a212b14ba9f8d4b9043c7840c1e7407c063.exe

    Filesize

    87KB

    MD5

    7a46db5b386fa002d8f1162203c15425

    SHA1

    efdeb903b0d584a7aa06861efa28e9ad30acc372

    SHA256

    11ab2cc9040871d6fc0b04899d536c1a8c0fbed3af323ce377f7ad18812b026c

    SHA512

    59b68e98fd722ee8b733e8ad5cd00fd8650767d29d1294b3243006cc26a304297abcb562d3672355d52f783eff974e17df85530a73c1ca8076e61d2bac0afc98

  • memory/3788-100-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3788-101-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3788-103-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4540-12-0x00007FFE642D3000-0x00007FFE642D5000-memory.dmp

    Filesize

    8KB

  • memory/4540-13-0x00000208828E0000-0x00000208828F8000-memory.dmp

    Filesize

    96KB

  • memory/4540-14-0x00007FFE642D0000-0x00007FFE64D91000-memory.dmp

    Filesize

    10.8MB

  • memory/4540-16-0x00007FFE642D0000-0x00007FFE64D91000-memory.dmp

    Filesize

    10.8MB