Overview

overview

3

Static

static

mchost.chm

windows10-2004-x64

1

mchost.exe

windows10-2004-x64

3

Resubmissions

09-01-2023 19:32

230109-x871jaah3x 3

09-01-2023 19:14

230109-xxtc1aag7x 8

Analysis

  • max time kernel
    581s
  • max time network
    583s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-01-2023 19:32

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General

  • Target

    mchost.exe

  • Size

    872KB

  • MD5

    c56b5f0201a3b3de53e561fe76912bfd

  • SHA1

    2a4062e10a5de813f5688221dbeb3f3ff33eb417

  • SHA256

    237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

  • SHA512

    195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

  • SSDEEP

    12288:6pVWeOV7GtINsegA/hMyyzlcqikvAfcN9b2MyZa31twoPTdFxgawV2M01:6T3E53Myyzl0hMf1tr7Caw8M01

Score
3/10

Malware Config

Signatures

  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies registry class 64 IoCs
  • Opens file in notepad (likely ransom note) 2 IoCs
    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 24 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\mchost.exe
    "C:\Users\Admin\AppData\Local\Temp\mchost.exe"
    1⤵
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    PID:4364
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:1980
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\Dimasev.txt
      1⤵
      • Opens file in notepad (likely ransom note)
      PID:2904
    • C:\Users\Admin\AppData\Local\Temp\Dimasev.exe
      "C:\Users\Admin\AppData\Local\Temp\Dimasev.exe"
      1⤵
      • Modifies registry class
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:1888
    • C:\Windows\system32\OpenWith.exe
      C:\Windows\system32\OpenWith.exe -Embedding
      1⤵
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2532
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\Dimasev.au3
        2⤵
        • Opens file in notepad (likely ransom note)
        PID:3232
    • C:\Users\Admin\AppData\Local\Temp\mchost.exe
      "C:\Users\Admin\AppData\Local\Temp\mchost.exe"
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2244
    • C:\Users\Admin\AppData\Local\Temp\Dimasev.exe
      "C:\Users\Admin\AppData\Local\Temp\Dimasev.exe"
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:4336
    • C:\Users\Admin\AppData\Local\Temp\mchost.exe
      "C:\Users\Admin\AppData\Local\Temp\mchost.exe"
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2028
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
      • Checks SCSI registry key(s)
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:3088
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k SDRSVC
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:736
    • C:\Windows\System32\ny4hum.exe
      "C:\Windows\System32\ny4hum.exe"
      1⤵
        PID:788

      Network

      MITRE ATT&CK Enterprise v6

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      Downloads