Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-10-2024 10:24

General

  • Target

    bb61b45b4f233858a071acd309b9276f1f4b49e26fbc7e39f59aacfef743a4ffN.exe

  • Size

    135KB

  • MD5

    837f96aebc511868ffbb444c8d662310

  • SHA1

    88c93ffe46d8e1e9e1a8b2325d15af1bd813a8b1

  • SHA256

    bb61b45b4f233858a071acd309b9276f1f4b49e26fbc7e39f59aacfef743a4ff

  • SHA512

    c2f47270a06556f427d70bf1e6e0f916b15768996620ecec9f9383d61ac6637e01bc9a3c481a54c969aeb9d186235676a6bda650b51b42c7ea492275b9793c5a

  • SSDEEP

    1536:JxqjQ+P04wsmJCecSxtWGQ5FVBXLYXzXwl4ePnVBXLYXzXwl4eP/4XCJ:sr85CecsQ5vB8DApdB8DAp34G

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\bb61b45b4f233858a071acd309b9276f1f4b49e26fbc7e39f59aacfef743a4ffN.exe
    "C:\Users\Admin\AppData\Local\Temp\bb61b45b4f233858a071acd309b9276f1f4b49e26fbc7e39f59aacfef743a4ffN.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:1148
    • C:\Users\Admin\AppData\Local\Temp\3582-490\bb61b45b4f233858a071acd309b9276f1f4b49e26fbc7e39f59aacfef743a4ffN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\bb61b45b4f233858a071acd309b9276f1f4b49e26fbc7e39f59aacfef743a4ffN.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3932
      • 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:3376

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\bb61b45b4f233858a071acd309b9276f1f4b49e26fbc7e39f59aacfef743a4ffN.exe

    Filesize

    95KB

    MD5

    de7499413d140af00a7e2173946e9266

    SHA1

    dd5410944fad71ca3fc282357ea03bbd9214fb21

    SHA256

    28cb11513dd6d2c8191e99c60cff4e3292367fe66fc461365ddc7d4d7ffe351f

    SHA512

    36eff03f3e3ea1313c9ce535ecb8c8d788e22769f0dc1270ed259d2195d10ff84069cb8a179c2afce542846db5fc8a6a92ed5a920e8b0cac5c6573a6bba7f057

  • memory/1148-108-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1148-109-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1148-111-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3932-12-0x00007FFD479A5000-0x00007FFD479A6000-memory.dmp

    Filesize

    4KB

  • memory/3932-13-0x000000001C2A0000-0x000000001C76E000-memory.dmp

    Filesize

    4.8MB

  • memory/3932-14-0x00007FFD476F0000-0x00007FFD48091000-memory.dmp

    Filesize

    9.6MB

  • memory/3932-15-0x000000001C770000-0x000000001C80C000-memory.dmp

    Filesize

    624KB

  • memory/3932-17-0x000000001C9C0000-0x000000001CA66000-memory.dmp

    Filesize

    664KB

  • memory/3932-16-0x00007FFD476F0000-0x00007FFD48091000-memory.dmp

    Filesize

    9.6MB

  • memory/3932-24-0x00007FFD476F0000-0x00007FFD48091000-memory.dmp

    Filesize

    9.6MB