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Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/12/2024, 02:14

General

  • Target

    8875aa469e3deb7bd4a9fc6496851aebe64516abc284bebabfba2ca82eaad88bN.exe

  • Size

    146KB

  • MD5

    c70021eb6d47161c2b7fdb880669a720

  • SHA1

    0c3a2abd11bc36e0d678bbbd67fa286bf7214b86

  • SHA256

    8875aa469e3deb7bd4a9fc6496851aebe64516abc284bebabfba2ca82eaad88b

  • SHA512

    c7db8c72a9a4b426e04440db542596a03cc907df823c604b300ba3010074c491587d573292dd3cd43412dc6410799d3988e83cf4444a991f63b033fbecce0610

  • SSDEEP

    3072:sr85CkkbAYn2GgYlBYN2fHYTo+mst8wDSRUTT:k9xbAMpgY3gTp8DRUTT

Malware Config

Signatures

  • Detect Neshta payload 4 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 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 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8875aa469e3deb7bd4a9fc6496851aebe64516abc284bebabfba2ca82eaad88bN.exe
    "C:\Users\Admin\AppData\Local\Temp\8875aa469e3deb7bd4a9fc6496851aebe64516abc284bebabfba2ca82eaad88bN.exe"
    1⤵
    • Checks computer location settings
    • 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:8
    • C:\Users\Admin\AppData\Local\Temp\3582-490\8875aa469e3deb7bd4a9fc6496851aebe64516abc284bebabfba2ca82eaad88bN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\8875aa469e3deb7bd4a9fc6496851aebe64516abc284bebabfba2ca82eaad88bN.exe"
      2⤵
      • Executes dropped EXE
      PID:3488

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE

    Filesize

    86KB

    MD5

    3b73078a714bf61d1c19ebc3afc0e454

    SHA1

    9abeabd74613a2f533e2244c9ee6f967188e4e7e

    SHA256

    ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29

    SHA512

    75959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4

  • C:\Users\Admin\AppData\Local\Temp\3582-490\8875aa469e3deb7bd4a9fc6496851aebe64516abc284bebabfba2ca82eaad88bN.exe

    Filesize

    105KB

    MD5

    5414410b930e2182fa4795589348e761

    SHA1

    f5b62ed77da8506f49a2377fd5e492872d4bf19e

    SHA256

    c14d38731d13c559a4997ad04fdd358f413920e486ea0f6bd2f407a4baf182eb

    SHA512

    14b6e62839cd95c70e33a345ec5bf47a6776c8dfe8473815a68384c5197600401b45d17a888fb1428627de241f7f6721d0cb5621722565d916fd68596238f70b

  • memory/8-92-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/8-93-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/8-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB