Analysis

  • max time kernel
    136s
  • max time network
    146s
  • 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 20:13

General

  • Target

    a55db9a669a259fc2da60a11ed3920fbcb537a8a438dcf6ff05c581778c81c59.exe

  • Size

    2.1MB

  • MD5

    28f60ef778f3f6ab6b2bd17eb4d44195

  • SHA1

    5544bcf7cdc169e4be2dfbcf92159fb79da2a6e4

  • SHA256

    a55db9a669a259fc2da60a11ed3920fbcb537a8a438dcf6ff05c581778c81c59

  • SHA512

    ebb76f1906be09899cb4b8619264dd0c57ae068aa023e5ab1a739518a5100a3e6bb7fe0c5ba9d1aaff5af3b308a5eb51f7b0f914efeac012eaa3504293a97ba0

  • SSDEEP

    49152:xlwXIuBR3PErb/THvO90d7HjmAFd4A64nsfJ8Zu3IFz/+CWXcSgXOOXoqaP5cLDR:Ux3PGuYFzI0

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.

  • Drops startup file 1 IoCs
  • 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 behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a55db9a669a259fc2da60a11ed3920fbcb537a8a438dcf6ff05c581778c81c59.exe
    "C:\Users\Admin\AppData\Local\Temp\a55db9a669a259fc2da60a11ed3920fbcb537a8a438dcf6ff05c581778c81c59.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:2524
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a55db9a669a259fc2da60a11ed3920fbcb537a8a438dcf6ff05c581778c81c59.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a55db9a669a259fc2da60a11ed3920fbcb537a8a438dcf6ff05c581778c81c59.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4492

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\a55db9a669a259fc2da60a11ed3920fbcb537a8a438dcf6ff05c581778c81c59.exe

    Filesize

    2.0MB

    MD5

    fe0d6ef223792ede0c673a06fbad2bec

    SHA1

    02675a85e0cd7691a9adf5f17798ba6c15580164

    SHA256

    69e222ed41db51c9a462554eefd8bbebdbcefce7f8c3183601562f6262de56da

    SHA512

    81f8151d2fd83507709f82c99081a0659712d85d4e8f0c9738e61c01698c20780963bec8a92cc6321f9c65882defa8206218f5fce68f1537492b463ea93acccb

  • memory/2524-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2524-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2524-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB