Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    01-01-2025 16:18

General

  • Target

    959fbff64bffddb99f4688cddeb2083055fbe2d2c6146b12940fcf91ba0718d8N.exe

  • Size

    489KB

  • MD5

    ee0b94dde4c0f814d790de72f18c0780

  • SHA1

    105222e1852596539ccdc6c866ba8eeef3d7e02f

  • SHA256

    959fbff64bffddb99f4688cddeb2083055fbe2d2c6146b12940fcf91ba0718d8

  • SHA512

    83baff2b39c408181afc6bf7be7984f9899033b5077309d7577f980561f005dd661aad66e4f953593fd0ba69e2288092cff199a3696099c9d6debf950d356847

  • SSDEEP

    6144:k9rqfqWFoED8NZ5PSXsG2tTs7bWd291BADVMRKn7e+VwbxM9SQ9:rSWDGZg321sGd295MdubxM9

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 1 IoCs
  • Loads dropped DLL 7 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).

  • Program crash 1 IoCs
  • 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 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\959fbff64bffddb99f4688cddeb2083055fbe2d2c6146b12940fcf91ba0718d8N.exe
    "C:\Users\Admin\AppData\Local\Temp\959fbff64bffddb99f4688cddeb2083055fbe2d2c6146b12940fcf91ba0718d8N.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:2076
    • C:\Users\Admin\AppData\Local\Temp\3582-490\959fbff64bffddb99f4688cddeb2083055fbe2d2c6146b12940fcf91ba0718d8N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\959fbff64bffddb99f4688cddeb2083055fbe2d2c6146b12940fcf91ba0718d8N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3008
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3008 -s 548
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2464

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\959fbff64bffddb99f4688cddeb2083055fbe2d2c6146b12940fcf91ba0718d8N.exe

    Filesize

    448KB

    MD5

    1dfb8c10d182db47a769316ca8bacc08

    SHA1

    0917cbb1686ac9f97ce96c6d69959b363e8c79a2

    SHA256

    d513a26e3f37ab6a5ad49e707830b9f281e228a05d1dfb59f7e0b52a77164f37

    SHA512

    40cc93637f3f712f175eab8ec6939a72bab8e9acd82932b3444c14937267b34a6120c1efb08a3f7e4b60d3bdad7ec53b7046c8f739fb68abb5dc2d8e2b73b9e8

  • memory/2076-91-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2076-93-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3008-12-0x00000000744EE000-0x00000000744EF000-memory.dmp

    Filesize

    4KB

  • memory/3008-13-0x0000000001390000-0x00000000013FA000-memory.dmp

    Filesize

    424KB