Analysis

  • max time kernel
    119s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    08-02-2025 14:51

General

  • Target

    b7c72d4d5117c5af5c541ccb7b7ae1ac17a072106a5e8e0e40052cff8da3f295N.exe

  • Size

    366KB

  • MD5

    40a49b88226281f9fe89a5c21b31dc40

  • SHA1

    5a48ecf4adde71c68330778992e02ad4858350f0

  • SHA256

    b7c72d4d5117c5af5c541ccb7b7ae1ac17a072106a5e8e0e40052cff8da3f295

  • SHA512

    38aa3fa8896275b7bf46c518ea8b77538b375536e49385ae8e3b83246e26d41cd61e97a0f63cfd32d11dec9e8f45162a2cc36721abf70f5db835abb8ea2796d1

  • SSDEEP

    6144:k9lyVayioacLiYwPVLLqro+2jydhygKbN+Znu3D+sXOENm2eK7mnoUSgpAY8ODcx:ayVMoacLiYwtLLr+sydfKbCnu31lNDHH

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 2 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b7c72d4d5117c5af5c541ccb7b7ae1ac17a072106a5e8e0e40052cff8da3f295N.exe
    "C:\Users\Admin\AppData\Local\Temp\b7c72d4d5117c5af5c541ccb7b7ae1ac17a072106a5e8e0e40052cff8da3f295N.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:2156
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b7c72d4d5117c5af5c541ccb7b7ae1ac17a072106a5e8e0e40052cff8da3f295N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b7c72d4d5117c5af5c541ccb7b7ae1ac17a072106a5e8e0e40052cff8da3f295N.exe"
      2⤵
      • Executes dropped EXE
      PID:2420

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\b7c72d4d5117c5af5c541ccb7b7ae1ac17a072106a5e8e0e40052cff8da3f295N.exe

    Filesize

    325KB

    MD5

    94fe07302a4b50abe6b517eac212ab0b

    SHA1

    d5346a635dc3506104d92a4f1ea3b5c7d3f37200

    SHA256

    2f243842d537f27523637b6bee1c73d2ded04070b7cf5cf21b4a5c4a8e58af9b

    SHA512

    74e402baf0bcfae737b02ce410e10e43f38e0a23f687f6a9febb131cebb42f5126fd79aee62582c9d6dbdf81d27db06d586dc868df5ca0118583f531fcc65802

  • memory/2156-83-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2156-85-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB