Analysis

  • max time kernel
    141s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    14-06-2024 02:20

General

  • Target

    a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe

  • Size

    66KB

  • MD5

    b6cf492f580943b7f3c5a6115e2b783f

  • SHA1

    44452b62ad27d90f5c5010f1cf813012705e24f8

  • SHA256

    a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84

  • SHA512

    6e63186895ee399f27ce93aab963c9e5cff0d5cdab0084f1a67ce5b267c51018cea8a755a17d1a2cf179884e9ea3c6dcbd4aa6fcb0d0326341cfd0d6ee99328b

  • SSDEEP

    768:ZrItKyw5WHXfQIhIiIk9ecAaVPD96KyX6P:Zr3Z5IfQIR81ad5yX6P

Score
9/10

Malware Config

Signatures

  • Detects Windows executables referencing non-Windows User-Agents 4 IoCs
  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe
    "C:\Users\Admin\AppData\Local\Temp\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3020
    • C:\Windows\SysWOW64\attrib.exe
      attrib +a +s +h +r C:\Windows\Debug\ayahost.exe
      2⤵
      • Sets file to hidden
      • Drops file in Windows directory
      • Views/modifies file attributes
      PID:2292
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A7ECA8~1.EXE > nul
      2⤵
      • Deletes itself
      PID:2568
  • C:\Windows\Debug\ayahost.exe
    C:\Windows\Debug\ayahost.exe
    1⤵
    • Executes dropped EXE
    PID:2984

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\Debug\ayahost.exe

    Filesize

    66KB

    MD5

    f09f2ea3fc61ead9ed0995877b1cf347

    SHA1

    8e316310cf8465f84d2fbc529af054bdece7514d

    SHA256

    674a2c571da242f804bd51e46ce62b6b6dbff20c132d71cdb9a5ba570fe40b00

    SHA512

    3012dd52c21688dab8bfebc7d478d354394e8bc5cf9df5324eea7d3ab64906d065a96ab19f9def66b8c0e6cb9a833ba6c5672e1294697821b094eed8169d399f

  • memory/2984-5-0x0000000000400000-0x0000000000411000-memory.dmp

    Filesize

    68KB

  • memory/2984-6-0x0000000000400000-0x0000000000411000-memory.dmp

    Filesize

    68KB

  • memory/3020-0-0x0000000000400000-0x0000000000411000-memory.dmp

    Filesize

    68KB