Analysis

  • max time kernel
    111s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-12-2024 17:51

General

  • Target

    a1c2f7d98655c32df3c7f3875c633e32cca62a238eee4a20e93623b9404ca2bfN.exe

  • Size

    2.6MB

  • MD5

    5fc24944514212af5e86951ad89f47c0

  • SHA1

    df3a3ccd42f4ca95a49d0cdd0802336dc2ce457d

  • SHA256

    a1c2f7d98655c32df3c7f3875c633e32cca62a238eee4a20e93623b9404ca2bf

  • SHA512

    effc8d93ed08ea4ad60cfc819f5d51812e61a5a9b1e9ae6fff038fcc3114dcd62d247db896a5ca64a416840b24dfcf60fa6dc1e51f589eaebdcb6c42d08a89af

  • SSDEEP

    49152:0ojIsg8bR+SynebwUnRMKu5tL3BCWj1cGP:0oMsguR45xBCo

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 FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a1c2f7d98655c32df3c7f3875c633e32cca62a238eee4a20e93623b9404ca2bfN.exe
    "C:\Users\Admin\AppData\Local\Temp\a1c2f7d98655c32df3c7f3875c633e32cca62a238eee4a20e93623b9404ca2bfN.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:2728
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a1c2f7d98655c32df3c7f3875c633e32cca62a238eee4a20e93623b9404ca2bfN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a1c2f7d98655c32df3c7f3875c633e32cca62a238eee4a20e93623b9404ca2bfN.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:5100

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\a1c2f7d98655c32df3c7f3875c633e32cca62a238eee4a20e93623b9404ca2bfN.exe

    Filesize

    2.6MB

    MD5

    fa07b812c3c12e1ed3eb00bcbfa588a2

    SHA1

    f47e230bc4e4f97e4b926de606b3ccaa7ecefdc2

    SHA256

    65309d5c1ab35f63fa09fb8f3b9d555d5339bf71bc3bb3087379659129de5010

    SHA512

    add5e2e343debe5106bbe19c52b5004d13e4f1e5682e0c986ce04e67d12e3a402210b1725e00d804c71755e1aefa5dfeca4549a5fef0ee21c66f27b6d8f2833f

  • memory/2728-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2728-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2728-101-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/5100-11-0x0000000000970000-0x0000000000971000-memory.dmp

    Filesize

    4KB

  • memory/5100-97-0x0000000000970000-0x0000000000971000-memory.dmp

    Filesize

    4KB

  • memory/5100-96-0x0000000000400000-0x00000000006B7000-memory.dmp

    Filesize

    2.7MB