Analysis

  • max time kernel
    92s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/10/2024, 12:17

General

  • Target

    b98493ed0bf452a82c15e48cf17a915f009fb9e630edd167d5f7c8b8605f8a4fN.exe

  • Size

    350KB

  • MD5

    981e8aebdde820b4a31f3f2bc46664e0

  • SHA1

    83570359d2d82cd138b2f5bebeb20c171eb6d047

  • SHA256

    b98493ed0bf452a82c15e48cf17a915f009fb9e630edd167d5f7c8b8605f8a4f

  • SHA512

    eecb25fba0e6b5c546560558cb84464f8e6990ab717f4aa0ad11cfeffa3150b043b143bb48d1aada87b4a410612cc23e9bca97a355679167c803944e6f604808

  • SSDEEP

    3072:sr85CJ0qmb9sfK34RN6JA37mXKjK6nSzFlzbI41MtTDO7oBgNklkMAkhkKiicIQc:k96dsfAIZpj5Y/I41Paqd8YSB

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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Modifies file permissions 1 TTPs 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.

  • File and Directory Permissions Modification: Windows File and Directory Permissions Modification 1 TTPs
  • 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 4 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 AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b98493ed0bf452a82c15e48cf17a915f009fb9e630edd167d5f7c8b8605f8a4fN.exe
    "C:\Users\Admin\AppData\Local\Temp\b98493ed0bf452a82c15e48cf17a915f009fb9e630edd167d5f7c8b8605f8a4fN.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:3400
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b98493ed0bf452a82c15e48cf17a915f009fb9e630edd167d5f7c8b8605f8a4fN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b98493ed0bf452a82c15e48cf17a915f009fb9e630edd167d5f7c8b8605f8a4fN.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4748
      • C:\Windows\SysWOW64\takeown.exe
        "C:\Windows\system32\takeown.exe" /F "C:\Windows"
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:2152
      • C:\Windows\SysWOW64\takeown.exe
        "C:\Windows\system32\takeown.exe" /F "C:\Windows\system32"
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:3868

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\b98493ed0bf452a82c15e48cf17a915f009fb9e630edd167d5f7c8b8605f8a4fN.exe

    Filesize

    309KB

    MD5

    617a85d3e75f4d5fee8fedf72991216d

    SHA1

    325998eef91b304f1b970265ac1d9ccd38277785

    SHA256

    3da3509997498adc0e21e5e6ba69bb8c2c7edf7aeab235e2deb444279842590b

    SHA512

    29658499f1a7c90f0264b5999ac5d8d63e35cb4d81db031b01a2f9163659cb5e5ee048742db6bdff87442051c1417d56ab015157d7396136905de5fa86d9bba6

  • C:\Windows\svchost.com

    Filesize

    40KB

    MD5

    4590df3cd03db40b3dd01268dbf98848

    SHA1

    ede587d7f38614d5a989584ec81423b84e103bff

    SHA256

    24b9b2bb79fd547391b019f032d40449063858979e81e1384f27b950c0e2f3c4

    SHA512

    5dc62572614491f01e39c80a5a9b29032970b3744237adc99d579b0b601dfad8e017fe7fcd3871c70d435d6f012224c897819fd697bc1c391fe5f9938e3e49cb

  • memory/3400-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3400-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3400-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3400-100-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB