Analysis

  • max time kernel
    136s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-11-2022 23:22

General

  • Target

    86518918c856e97fb1d39e281378202e7292cf58fd8d806f3c70356ba1804673.exe

  • Size

    1.5MB

  • MD5

    f599e7244d548ecafafdea2819e1ba57

  • SHA1

    39c9fd2fef29eccdf98ee2af7acdc47506f3d9e0

  • SHA256

    86518918c856e97fb1d39e281378202e7292cf58fd8d806f3c70356ba1804673

  • SHA512

    a934587f3f3c32348e71635dc069b4f8892de7d00538f20e4fd585cbf7c64efc6edc3092700d663a785d637a5b6a8ae56170531698844d35b754ced5f04235b3

  • SSDEEP

    24576:xCTPMAzVkUetVI5ut/VkP+x6IS02FmZu4Pw:UPMmZuvS02FmZul

Score
10/10

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Disables use of System Restore points 1 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 48 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops autorun.inf file 1 TTPs 47 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 3 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies Control Panel 3 IoCs
  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\86518918c856e97fb1d39e281378202e7292cf58fd8d806f3c70356ba1804673.exe
    "C:\Users\Admin\AppData\Local\Temp\86518918c856e97fb1d39e281378202e7292cf58fd8d806f3c70356ba1804673.exe"
    1⤵
    • Modifies system executable filetype association
    • Modifies visibility of file extensions in Explorer
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Drops autorun.inf file
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    PID:3044
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3044 -s 864
      2⤵
      • Program crash
      PID:4992
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3044 -ip 3044
    1⤵
      PID:1372

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Replication Through Removable Media

    1
    T1091

    Persistence

    Change Default File Association

    1
    T1042

    Hidden Files and Directories

    1
    T1158

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    3
    T1112

    Hidden Files and Directories

    1
    T1158

    Discovery

    Query Registry

    1
    T1012

    Peripheral Device Discovery

    1
    T1120

    System Information Discovery

    2
    T1082

    Lateral Movement

    Replication Through Removable Media

    1
    T1091

    Impact

    Inhibit System Recovery

    1
    T1490

    Replay Monitor

    Loading Replay Monitor...

    Downloads