Analysis

  • max time kernel
    104s
  • max time network
    21s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    22-07-2024 09:13

General

  • Target

    8efc69c0f33ebc8c593f2b25b58fe7f0N.exe

  • Size

    2.6MB

  • MD5

    8efc69c0f33ebc8c593f2b25b58fe7f0

  • SHA1

    3dd0e1bde5eee9597bb42c0606335d06678c345a

  • SHA256

    70dd0d017d11717853d171de483e0911154df71323964809ef6671517f3daec7

  • SHA512

    64c63563264262acecb00d2c50c6b81a81d088b91d0f16e48a844eace6c149c8ea3ced9c83c0534c9181a911623dd54716fadff44cb1498d5c0e565b10a4a241

  • SSDEEP

    49152:ynDZE0BIUpIxiaq1hyu8oBS6VPA1JGH/qdfWQsgJcWGs4iWCMv:uDT7IZq7P8oFPSaCWgGshU

Malware Config

Signatures

  • Detect Neshta payload 6 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 7 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).

  • NSIS installer 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8efc69c0f33ebc8c593f2b25b58fe7f0N.exe
    "C:\Users\Admin\AppData\Local\Temp\8efc69c0f33ebc8c593f2b25b58fe7f0N.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:2440
    • C:\Users\Admin\AppData\Local\Temp\3582-490\8efc69c0f33ebc8c593f2b25b58fe7f0N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\8efc69c0f33ebc8c593f2b25b58fe7f0N.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: GetForegroundWindowSpam
      PID:1284

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

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\8efc69c0f33ebc8c593f2b25b58fe7f0N.exe

    Filesize

    2.5MB

    MD5

    a164d8f7d1fa1979f636a4453b9abadc

    SHA1

    4a7cd811c13aebe0d87702c31bb72e739110d5a0

    SHA256

    03e5236505b1b6f64e96473636bd63e3b3ef6c18d9b3067bb77233eb27985e35

    SHA512

    22e1d499593211f6903ad04f22dc9ad3088bda8fdd551f904fb4aa08f87117c2124102f65b5872cb8dcef883d9f29dd61629b57cc4fca922736b5813dc8d36ef

  • \Users\Admin\AppData\Local\Temp\nsy60.tmp\System.dll

    Filesize

    11KB

    MD5

    00a0194c20ee912257df53bfe258ee4a

    SHA1

    d7b4e319bc5119024690dc8230b9cc919b1b86b2

    SHA256

    dc4da2ccadb11099076926b02764b2b44ad8f97cd32337421a4cc21a3f5448f3

    SHA512

    3b38a2c17996c3b77ebf7b858a6c37415615e756792132878d8eddbd13cb06710b7da0e8b58104768f8e475fc93e8b44b3b1ab6f70ddf52edee111aaf5ef5667

  • \Users\Admin\AppData\Local\Temp\nsy60.tmp\nsDialogs.dll

    Filesize

    9KB

    MD5

    ab73c0c2a23f913eabdc4cb24b75cbad

    SHA1

    6569d2863d54c88dcf57c843fc310f6d9571a41e

    SHA256

    3d0060c5c9400a487dbefe4ac132dd96b07d3a4ba3badab46a7410a667c93457

    SHA512

    99d287b5152944f64edc7ce8f3ebcd294699e54a5b42ac7a88e27dff8a68278a5429f4d299802ee7ddbe290f1e3b6a372a5f3bb4ecb1a3c32e384bca3ccdb2b8

  • memory/2440-103-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2440-104-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2440-105-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2440-106-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2440-108-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB