Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    24/02/2025, 08:10

General

  • Target

    f17863c715f12ee102b050f989ddbda6ca7791efbb0a135d1e81d6c6c21c0ec5.exe

  • Size

    2.5MB

  • MD5

    9a39310f33b3d896f3070569a44a5657

  • SHA1

    8c1be6066a698b2786d0a161349d4ff20d963f12

  • SHA256

    f17863c715f12ee102b050f989ddbda6ca7791efbb0a135d1e81d6c6c21c0ec5

  • SHA512

    d37306243844ce1e061b68820155e2896a260657969e8004698cfff4cfe0c9b288cd545192c984a3b5c538f1fa6a96368eb79b20cc960a268a114fc240dc4cd0

  • SSDEEP

    49152:wN3EieMYyV4g/2gjchn0s7Dsl2AjlhQfSCY8HUN7MIwKJkPXoPKO9JSDFAvKZ2jS:whE/a5lcCNwIwKJkPXoPKO9JgFKdgNo6

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 SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f17863c715f12ee102b050f989ddbda6ca7791efbb0a135d1e81d6c6c21c0ec5.exe
    "C:\Users\Admin\AppData\Local\Temp\f17863c715f12ee102b050f989ddbda6ca7791efbb0a135d1e81d6c6c21c0ec5.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:2648
    • C:\Users\Admin\AppData\Local\Temp\3582-490\f17863c715f12ee102b050f989ddbda6ca7791efbb0a135d1e81d6c6c21c0ec5.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\f17863c715f12ee102b050f989ddbda6ca7791efbb0a135d1e81d6c6c21c0ec5.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2768
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2768 -s 476
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2876

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\f17863c715f12ee102b050f989ddbda6ca7791efbb0a135d1e81d6c6c21c0ec5.exe

    Filesize

    2.5MB

    MD5

    0620bfa938950a439897bb45351c2fe3

    SHA1

    0f4d7eea4cf26f8927b2f0a8b4bf0e5a92602537

    SHA256

    3bf61b41083f9535006c4690f77f50a8e71b43407a56fef6d8718941d0b3a170

    SHA512

    b4c5b02e49364db5ee104970c635470aa18a65af604f54edbcc99be6b81785c68305fea06353443e408090b9b0de75fae9e91d9e7ba324a5ba3052498c1f1191

  • memory/2648-88-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2648-90-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB