Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    18-11-2024 22:30

General

  • Target

    af01fa49a1cdf7e1d4ca2cbde6f59267ceab2909af2eec71a8c889977b12a293.exe

  • Size

    127KB

  • MD5

    5921adabc522c9966b399254d3f289e2

  • SHA1

    c9a1f38d8cb745b41ca29c8e308ed0c434021c30

  • SHA256

    af01fa49a1cdf7e1d4ca2cbde6f59267ceab2909af2eec71a8c889977b12a293

  • SHA512

    e79da57831eadef1ca638e6417076e140a59302e9cb295eeabe1348cda308b2c611751f69205397ef58502b38a8a6106cae443b6d7e2287ef5c064e4c5fc98d1

  • SSDEEP

    3072:sr85CoPeE35lUN6vBqFz975UX52xqQIURTXJ3FI7m:k9WnOYvqCJ24sVFF

Malware Config

Signatures

  • Detect Neshta payload 3 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 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 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • NSIS installer 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\af01fa49a1cdf7e1d4ca2cbde6f59267ceab2909af2eec71a8c889977b12a293.exe
    "C:\Users\Admin\AppData\Local\Temp\af01fa49a1cdf7e1d4ca2cbde6f59267ceab2909af2eec71a8c889977b12a293.exe"
    1⤵
    • Loads dropped DLL
    • 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:2504
    • C:\Users\Admin\AppData\Local\Temp\3582-490\af01fa49a1cdf7e1d4ca2cbde6f59267ceab2909af2eec71a8c889977b12a293.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\af01fa49a1cdf7e1d4ca2cbde6f59267ceab2909af2eec71a8c889977b12a293.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2108
      • C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
        "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\3582-490\
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        PID:2140

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

    Filesize

    547KB

    MD5

    cf6c595d3e5e9667667af096762fd9c4

    SHA1

    9bb44da8d7f6457099cb56e4f7d1026963dce7ce

    SHA256

    593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

    SHA512

    ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Users\Admin\AppData\Local\Temp\3582-490\af01fa49a1cdf7e1d4ca2cbde6f59267ceab2909af2eec71a8c889977b12a293.exe

    Filesize

    87KB

    MD5

    1e4ade15b3405a25a07c8510fe8bdc75

    SHA1

    8b6b0ed38099ffaad2245ec44e6b50dccec473ed

    SHA256

    21c092a58278e8f461d0f880f2a164532eb586e3d7fefefe9c83909528153a7c

    SHA512

    689441f940dc063b1cfca938687c1127cb2ce87c451cb23a71dfc45d83a8d31c9fcd883a40e67cc2160ddbd14825965212decd6e30a139e55660b31da87cd9c8

  • memory/2504-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2504-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB