Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    12-03-2024 02:36

General

  • Target

    d71f8937c26b1f76a3a6cc1f84ae26e64ce04f587523d431fff176150d7e3653.exe

  • Size

    1.2MB

  • MD5

    a66565b3a57b5fdbfb6286a0250b22c1

  • SHA1

    c2090c10e9f7c95fd61343f403c52eb228c4e977

  • SHA256

    d71f8937c26b1f76a3a6cc1f84ae26e64ce04f587523d431fff176150d7e3653

  • SHA512

    e5638b0a06da2466e7459759550b047d3f61fee32b2dcabeaa2e4bab628be90a2d75bca1e9b58c34576417dc723c605bfec136224710dee63285cfe680dc5567

  • SSDEEP

    24576:FV7Ct+TyBk+By4uPNB3C6llllmQlcukC8CWnsJ:FV7CETyBk+By4u1llllHlNnqs

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.

  • 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 2 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).

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d71f8937c26b1f76a3a6cc1f84ae26e64ce04f587523d431fff176150d7e3653.exe
    "C:\Users\Admin\AppData\Local\Temp\d71f8937c26b1f76a3a6cc1f84ae26e64ce04f587523d431fff176150d7e3653.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2324
    • C:\Users\Admin\AppData\Local\Temp\3582-490\d71f8937c26b1f76a3a6cc1f84ae26e64ce04f587523d431fff176150d7e3653.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\d71f8937c26b1f76a3a6cc1f84ae26e64ce04f587523d431fff176150d7e3653.exe"
      2⤵
      • Executes dropped EXE
      PID:852

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\d71f8937c26b1f76a3a6cc1f84ae26e64ce04f587523d431fff176150d7e3653.exe

    Filesize

    1.1MB

    MD5

    2b78f930dad5627e1c2595960f5b6451

    SHA1

    2abb29652490c510e25ecceadc59804ffcbe2fbb

    SHA256

    4b136dd71b000afe4c4fa586eaf24cac3d84bd4076a815cdcc7370ada286656a

    SHA512

    e1f01a974f7c0831619c242299600b161053f35381df03df651880c5f5601fcdc9fc2d783103526e1a5bcbc109855c1616b4297df06b344a7f78a3b775bf6f3f

  • memory/2324-84-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2324-86-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB