Overview

overview

10

Static

static

1

f55b5576d2...86.exe

windows7-x64

10

f55b5576d2...86.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-03-2023 06:54

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    f55b5576d248b3bf0683f71fdae522a5c91ef87bb7e8dbded251e364687f3586.exe

  • Size

    1.3MB

  • MD5

    e3e5d520468b058d86c4bb4fa0b3459e

  • SHA1

    932af3c5049c93cbcadc40d510ea1afd71b3739a

  • SHA256

    f55b5576d248b3bf0683f71fdae522a5c91ef87bb7e8dbded251e364687f3586

  • SHA512

    9c985541c9016a89248d2193d45adb1d1de23eca0807b55583499f0810001416566121b7ed16fcd9ff02e236e411bfecab00d7503cb6d0919b4eebc0a54d8485

  • SSDEEP

    24576:5NrzL30XIWDA2gMC3G1WOtF57GeW37ToL:LrzLkBP1taeWrT

Score
10/10
bootkitpersistence

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Sets file execution options in registry 2 TTPs 4 IoCs
    persistence
  • 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.

    bootkitpersistence
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f55b5576d248b3bf0683f71fdae522a5c91ef87bb7e8dbded251e364687f3586.exe
    "C:\Users\Admin\AppData\Local\Temp\f55b5576d248b3bf0683f71fdae522a5c91ef87bb7e8dbded251e364687f3586.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Sets file execution options in registry
    • Writes to the Master Boot Record (MBR)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    PID:3116
  • C:\Users\Admin\AppData\Local\Temp\f55b5576d248b3bf0683f71fdae522a5c91ef87bb7e8dbded251e364687f3586.exe
    C:\Users\Admin\AppData\Local\Temp\f55b5576d248b3bf0683f71fdae522a5c91ef87bb7e8dbded251e364687f3586.exe explorer.exe
    1⤵
    • Suspicious use of SetWindowsHookEx
    PID:1136

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Bootkit

1
T1067

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1136-135-0x0000000000400000-0x0000000000555000-memory.dmp
    Filesize

    1.3MB

    Download
  • memory/3116-133-0x00000000023F0000-0x00000000023F1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/3116-136-0x0000000000400000-0x0000000000555000-memory.dmp
    Filesize

    1.3MB

    Download
  • memory/3116-137-0x00000000023F0000-0x00000000023F1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/3116-138-0x0000000000400000-0x0000000000555000-memory.dmp
    Filesize

    1.3MB

    Download
  • memory/3116-139-0x0000000000400000-0x0000000000555000-memory.dmp
    Filesize

    1.3MB

    Download