Analysis

  • max time kernel
    94s
  • 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
    13-11-2024 10:21

General

  • Target

    df9d36d1701897a47ccb1c7355c0cecd1699a5d508b8520ca65230542d8abe6cN.exe

  • Size

    84KB

  • MD5

    a2436181487b91cdccef3381597892d0

  • SHA1

    e4cb571df893183ce46c3a3775b63bcad3c53455

  • SHA256

    df9d36d1701897a47ccb1c7355c0cecd1699a5d508b8520ca65230542d8abe6c

  • SHA512

    3af6a18e80bbfaef20f46e2c94c422777e4bf5b55f27fc9f1647bc9b37c943b62981db7dc44fab310b50e475c6fe1dc0886e2a8050130043f5e351ce5634a79c

  • SSDEEP

    1536:JxqjQ+P04wsmJCXOKt+d5SClc4iggh4wsXxRm5+ovsgq1a88:sr85CeKt+dXlc4iggh4wGxe3vYb8

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).

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\df9d36d1701897a47ccb1c7355c0cecd1699a5d508b8520ca65230542d8abe6cN.exe
    "C:\Users\Admin\AppData\Local\Temp\df9d36d1701897a47ccb1c7355c0cecd1699a5d508b8520ca65230542d8abe6cN.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:976
    • C:\Users\Admin\AppData\Local\Temp\3582-490\df9d36d1701897a47ccb1c7355c0cecd1699a5d508b8520ca65230542d8abe6cN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\df9d36d1701897a47ccb1c7355c0cecd1699a5d508b8520ca65230542d8abe6cN.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4508
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4508 -s 868
        3⤵
        • Program crash
        PID:1184
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4508 -ip 4508
    1⤵
      PID:4316

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    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\df9d36d1701897a47ccb1c7355c0cecd1699a5d508b8520ca65230542d8abe6cN.exe

      Filesize

      43KB

      MD5

      7477d10169d3a80b5d34b0547dcda189

      SHA1

      505789302bc45556390fa11342af59cf701a4c27

      SHA256

      92e2f721d80bfc0c66ddd83034a1f53b075307bdbb86459e1e072ca01220dc1c

      SHA512

      9fbb5dae89a30d32060cac8fa0fa4afb9525ef5ec7a3d52b7820b72d538ba9a4ad72a7f1d5b4a4d1ed3b9842d29883297361d86a286b7c808e7679f962f1d8e3

    • memory/976-99-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/976-100-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/976-102-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/4508-14-0x000000007407E000-0x000000007407F000-memory.dmp

      Filesize

      4KB

    • memory/4508-15-0x0000000000970000-0x000000000097E000-memory.dmp

      Filesize

      56KB