Analysis

  • max time kernel
    97s
  • max time network
    97s
  • 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, 11:14

General

  • Target

    f42bb63ad6d996a40c4f02dec9672182886c1944531a75e8c4e867e46b9050edN.exe

  • Size

    138KB

  • MD5

    f3526516295b3bd4150341f7541ae3e0

  • SHA1

    354f2d38d5415bdcfa8f73f6352aace7598a9519

  • SHA256

    f42bb63ad6d996a40c4f02dec9672182886c1944531a75e8c4e867e46b9050ed

  • SHA512

    d39e696918629d282c4443ae30a80ef09c3051b51f39b973e2a5593121df4784224a0bc94bbb329915aa6351a0a848b27afdbb8e9bcdacc3a2b91f71d09d3c4a

  • SSDEEP

    1536:JxqjQ+P04wsmJCe12UiS6tWuZNVBXLYXzXwl4ePlVBXLYXzXwl4ePo46:sr85CecNZHB8DApXB8DApA46

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.

  • 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.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f42bb63ad6d996a40c4f02dec9672182886c1944531a75e8c4e867e46b9050edN.exe
    "C:\Users\Admin\AppData\Local\Temp\f42bb63ad6d996a40c4f02dec9672182886c1944531a75e8c4e867e46b9050edN.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:2740
    • C:\Users\Admin\AppData\Local\Temp\3582-490\f42bb63ad6d996a40c4f02dec9672182886c1944531a75e8c4e867e46b9050edN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\f42bb63ad6d996a40c4f02dec9672182886c1944531a75e8c4e867e46b9050edN.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3036
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
        dw20.exe -x -s 796
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        PID:64

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\f42bb63ad6d996a40c4f02dec9672182886c1944531a75e8c4e867e46b9050edN.exe

    Filesize

    97KB

    MD5

    cbfd5d962113f0f0916443fabafed1f8

    SHA1

    d7aa14e408dc2cbe3e209f9e63627f0fbb85c56d

    SHA256

    0c276d4d0d557a00c7bb49e25895bcaaaf73c5513193745f6dd7270e668b34ce

    SHA512

    cc24c618b1ec92cf965843808b8eebb973b25ea037e04de3d947c2f5af8815fcc3721c1e7bbd3c5f6c5ad4917d7d252d810ebfc78c032046951f4b99f6d8c679

  • memory/2740-108-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2740-109-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2740-111-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3036-12-0x00007FFEE6BE5000-0x00007FFEE6BE6000-memory.dmp

    Filesize

    4KB

  • memory/3036-13-0x000000001C310000-0x000000001C7DE000-memory.dmp

    Filesize

    4.8MB

  • memory/3036-14-0x00007FFEE6930000-0x00007FFEE72D1000-memory.dmp

    Filesize

    9.6MB

  • memory/3036-15-0x000000001C880000-0x000000001C91C000-memory.dmp

    Filesize

    624KB

  • memory/3036-16-0x000000001CAD0000-0x000000001CB76000-memory.dmp

    Filesize

    664KB

  • memory/3036-17-0x00007FFEE6930000-0x00007FFEE72D1000-memory.dmp

    Filesize

    9.6MB

  • memory/3036-24-0x00007FFEE6930000-0x00007FFEE72D1000-memory.dmp

    Filesize

    9.6MB