Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-01-2025 21:56

General

  • Target

    41bf39a9b64fbc8f6b9c79f911561ebdcb8c491002597143e5fcc0484f98827f.exe

  • Size

    345KB

  • MD5

    d0bc624abb5acafb637fb8777981f96d

  • SHA1

    32371b6a4f8ed0f3902d80b8ecbeb45cb691b5e8

  • SHA256

    41bf39a9b64fbc8f6b9c79f911561ebdcb8c491002597143e5fcc0484f98827f

  • SHA512

    c908dcaf037b7a286afcfd9765e39e80976f142de44675da2b33b57d2e41c9f33c2f2defe476cbbecd13d402cce220a9fae87dc4af7204600db7a408f4c43bcb

  • SSDEEP

    3072:sr85CpfkJKzvJJT5YOFt6WAvglqAXE+G17OWamvW8Idn/oY462wd2V39SGP2mzTt:k9l73TqOFt6WAvIqAYOWUPohnCGeVeb

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
  • Modifies Windows Firewall 2 TTPs 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 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).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 12 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • 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 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41bf39a9b64fbc8f6b9c79f911561ebdcb8c491002597143e5fcc0484f98827f.exe
    "C:\Users\Admin\AppData\Local\Temp\41bf39a9b64fbc8f6b9c79f911561ebdcb8c491002597143e5fcc0484f98827f.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:2472
    • C:\Users\Admin\AppData\Local\Temp\3582-490\41bf39a9b64fbc8f6b9c79f911561ebdcb8c491002597143e5fcc0484f98827f.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\41bf39a9b64fbc8f6b9c79f911561ebdcb8c491002597143e5fcc0484f98827f.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3608
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c netsh advfirewall firewall add rule name="Allow SOCKS5 Inbound" dir=in action=allow protocol=TCP localport=42100
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2540
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="Allow SOCKS5 Inbound" dir=in action=allow protocol=TCP localport=42100
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          PID:5092
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c netsh advfirewall firewall add rule name="Allow SOCKS5 Outbound" dir=out action=allow protocol=TCP localport=42100
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3296
        • C:\Windows\system32\netsh.exe
          netsh advfirewall firewall add rule name="Allow SOCKS5 Outbound" dir=out action=allow protocol=TCP localport=42100
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          PID:2952
  • C:\Users\Admin\AppData\Local\Temp\3582-490\41bf39a9b64fbc8f6b9c79f911561ebdcb8c491002597143e5fcc0484f98827f.exe
    C:\Users\Admin\AppData\Local\Temp\3582-490\41bf39a9b64fbc8f6b9c79f911561ebdcb8c491002597143e5fcc0484f98827f.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4284
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c netsh advfirewall firewall add rule name="Allow SOCKS5 Inbound" dir=in action=allow protocol=TCP localport=42100
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3928
      • C:\Windows\system32\netsh.exe
        netsh advfirewall firewall add rule name="Allow SOCKS5 Inbound" dir=in action=allow protocol=TCP localport=42100
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        PID:2548
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c netsh advfirewall firewall add rule name="Allow SOCKS5 Outbound" dir=out action=allow protocol=TCP localport=42100
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2600
      • C:\Windows\system32\netsh.exe
        netsh advfirewall firewall add rule name="Allow SOCKS5 Outbound" dir=out action=allow protocol=TCP localport=42100
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        PID:3992

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\41bf39a9b64fbc8f6b9c79f911561ebdcb8c491002597143e5fcc0484f98827f.exe

    Filesize

    305KB

    MD5

    2337a3984a119f08d630fd6302a4d7ba

    SHA1

    d281bfd2ae79131d90c1599c446a4b0d666ee863

    SHA256

    a988cc764b5db0c63c8c6fa5983015993d0e336111c06376325376c1f89de84c

    SHA512

    cafa2e6d2fae537eb39f95863275ed818c6dada779bb60934f15164a7afe383d45a165dd82eff1aa6c720ed4f70ac47a9105ce572af5f775d9b9b11fc04f37b8

  • memory/2472-93-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2472-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2472-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB