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Analysis

  • max time kernel
    95s
  • 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
    26/12/2024, 20:43

General

  • Target

    e3537c984cd3fe1b5fe0004f592ac699d305f578385e761d5d87b4117e2dc28dN.exe

  • Size

    371KB

  • MD5

    07c434d574931004be30da42f7b3b0e0

  • SHA1

    172620ac3d2a916cfc4bf467678f52e08fe75c6d

  • SHA256

    e3537c984cd3fe1b5fe0004f592ac699d305f578385e761d5d87b4117e2dc28d

  • SHA512

    13f04fba92a28f3390a554b086e881c9a6ea35337d7e76b4157295654c6b50abf9102a0619fe490eb78605372bedab6fe66bc96098854db96db59cbbc53f2d73

  • SSDEEP

    6144:Pu09wKm1HOUeX3S8dB9tiJJLhWj2gIdV3DLUBnFfh51CKK8Nu0KkJCpCiAO5nQWq:UKm1HOUeXC0DtiJJLhWj2gIddnUBnNE2

Malware Config

Signatures

  • 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\e3537c984cd3fe1b5fe0004f592ac699d305f578385e761d5d87b4117e2dc28dN.exe
    "C:\Users\Admin\AppData\Local\Temp\e3537c984cd3fe1b5fe0004f592ac699d305f578385e761d5d87b4117e2dc28dN.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:920
    • C:\Users\Admin\AppData\Local\Temp\3582-490\e3537c984cd3fe1b5fe0004f592ac699d305f578385e761d5d87b4117e2dc28dN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\e3537c984cd3fe1b5fe0004f592ac699d305f578385e761d5d87b4117e2dc28dN.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4108

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe

    Filesize

    2.4MB

    MD5

    d9e8a1fa55faebd36ed2342fedefbedd

    SHA1

    c25cc7f0035488de9c5df0121a09b5100e1c28e9

    SHA256

    bd7696911d75a9a35dfd125b24cb95003f1e9598592df47fa23a2568986a4a9a

    SHA512

    134644c68bd04536e9ea0a5da6e334d36b1ce8012a061fa6dabd31f85c16a1ac9eee8c40fee3d55f25c4d4edf0672de8ce204e344c800361cbcff092c09d7a33

  • C:\Users\Admin\AppData\Local\Temp\3582-490\e3537c984cd3fe1b5fe0004f592ac699d305f578385e761d5d87b4117e2dc28dN.exe

    Filesize

    331KB

    MD5

    a9a26129b895c534beaf214c33c3713f

    SHA1

    d7be4fc3c1a96f29db68b0c61ed1d1536c0e959b

    SHA256

    8abdbc9f3f034ee35f3da776ae607a1a38cf09af21d2b20a47633ec81269c726

    SHA512

    8624f62c2d699ba1dc5f6588cf0c68699df722fb7dbfec2464f6a22f8ae7c3109bf539df3f26a56c515c62316e7c7c27a15ba5ff32b11c2e58461e321cdd30fc

  • memory/920-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/920-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/920-101-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB