Overview

overview

10

Static

static

Annabelle.exe

windows7-x64

10

Annabelle.exe

windows10-2004-x64

Analysis

  • max time kernel
    156s
  • max time network
    169s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/12/2022, 19:54

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Errors

Reason
Machine shutdown
Report Analysis Logs

General

  • Target

    Annabelle.exe

  • Size

    15.9MB

  • MD5

    0f743287c9911b4b1c726c7c7edcaf7d

  • SHA1

    9760579e73095455fcbaddfe1e7e98a2bb28bfe0

  • SHA256

    716335ba5cd1e7186c40295b199190e2b6655e48f1c1cbe12139ba67faa5e1ac

  • SHA512

    2a6dd6288303700ef9cb06ae1efeb1e121c89c97708e5ecd15ed9b2a35d0ecff03d8da58b30daeadad89bd38dc4649521ada149fb457408e5a2bdf1512f88677

  • SSDEEP

    393216:UMwm0qBknxdEX+LbMUgoSZmWSmh4aaRN22ChHCMNku1y:UMcKX+Lbjgd7W1RNVC9ku1

Score
10/10
evasionpersistenceransomwaretrojan

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Modifies Windows Defender Real-time Protection settings 3 TTPs 2 IoCs
    evasiontrojan
  • UAC bypass 3 TTPs 1 IoCs
    evasiontrojan
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Disables RegEdit via registry modification 2 IoCs
    evasion
  • Disables Task Manager via registry modification
    evasion
  • Disables use of System Restore points 1 TTPs
    evasion
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    evasion
  • Modifies extensions of user files 7 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Sets file execution options in registry 2 TTPs 64 IoCs
    persistence
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • 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.

  • Interacts with shadow copies 2 TTPs 3 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies data under HKEY_USERS 15 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • System policy modification 1 TTPs 9 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\Annabelle.exe
    "C:\Users\Admin\AppData\Local\Temp\Annabelle.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Modifies Windows Defender Real-time Protection settings
    • UAC bypass
    • Disables RegEdit via registry modification
    • Modifies extensions of user files
    • Sets file execution options in registry
    • Checks computer location settings
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3676
    • C:\Windows\SYSTEM32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:4892
    • C:\Windows\SYSTEM32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:452
    • C:\Windows\SYSTEM32\NetSh.exe
      NetSh Advfirewall set allprofiles state off
      2⤵
      • Modifies Windows Firewall
      PID:3784
    • C:\Windows\SYSTEM32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:4704
    • C:\Windows\System32\shutdown.exe
      "C:\Windows\System32\shutdown.exe" -r -t 00 -f
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3804
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:3664
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4628
  • C:\Windows\system32\LogonUI.exe
    "LogonUI.exe" /flags:0x4 /state0:0xa39bb055 /state1:0x41c64e6d
    1⤵
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:3392

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/3676-132-0x0000011D7DD60000-0x0000011D7ED54000-memory.dmp

    Filesize

    16.0MB

    Download

  • memory/3676-133-0x00007FF8148F0000-0x00007FF8153B1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3676-134-0x00007FF8148F0000-0x00007FF8153B1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3676-140-0x00007FF8148F0000-0x00007FF8153B1000-memory.dmp

    Filesize

    10.8MB

    Download