Analysis

  • max time kernel
    39s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    11-06-2022 18:23

General

  • Target

    25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe

  • Size

    143KB

  • MD5

    88ae0425866fbbdd68c640cdaac784b7

  • SHA1

    a375d487c7c199afe7aba81c8b57727354d54265

  • SHA256

    25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945

  • SHA512

    ceb59b6bf7b41de9378d6c1ec0c4b59d150c10641364c0ca21a6338e8fe4df49d48db9f9b54c730a4f56fb6509205c9455d8bd5f7f3a0bdf9300fb8be59a2a24

Malware Config

Extracted

Family

metasploit

Version

encoder/fnstenv_mov

Signatures

  • MetaSploit

    Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

  • Deletes itself 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe
    "C:\Users\Admin\AppData\Local\Temp\25aae09e0b4117e7f5ab81b54d8800e029e55253a089e74002f2e00934ccb945.exe"
    1⤵
    • Writes to the Master Boot Record (MBR)
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:296
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\25AAE0~1.EXE >> NUL
      2⤵
      • Deletes itself
      PID:1396

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Bootkit

1
T1067

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/296-54-0x0000000075BF1000-0x0000000075BF3000-memory.dmp
    Filesize

    8KB

  • memory/296-55-0x0000000000400000-0x0000000000434000-memory.dmp
    Filesize

    208KB

  • memory/296-56-0x0000000000330000-0x0000000000360000-memory.dmp
    Filesize

    192KB

  • memory/296-58-0x0000000000400000-0x0000000000434000-memory.dmp
    Filesize

    208KB

  • memory/296-59-0x0000000000330000-0x0000000000360000-memory.dmp
    Filesize

    192KB

  • memory/1396-57-0x0000000000000000-mapping.dmp