Overview

overview

10

Static

static

3

f6d2a096d2...87.exe

windows7-x64

f6d2a096d2...87.exe

windows10-2004-x64

Analysis

  • max time kernel
    51s
  • max time network
    56s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240910-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/09/2024, 21:58

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Errors

Reason
Machine shutdown

General

  • Target
    f6d2a096d2f84946c85ceba852d97989da318ad6bf12fb439d8db07018859887.exe
  • Size 2.7MB
  • Sample240911-1vxt7avfll
  • SHA256 f6d2a096d2f84946c85ceba852d97989da318ad6bf12fb439d8db07018859887
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
shurkbootkitdiscoveryevasioninfostealerpersistenceransomwareupx

Malware Config

Signatures

  • Shurk

    Shurk is an infostealer, written in C++ which appeared in 2021.

    infostealershurk
  • Disables RegEdit via registry modification 2 IoCs
    evasion
  • Event Triggered Execution: Image File Execution Options Injection 1 TTPs 2 IoCs
    persistence
  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

    evasion
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Loads dropped DLL 1 IoCs
  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • 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
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Modifies Control Panel 2 IoCs
    evasion
  • Modifies data under HKEY_USERS 15 IoCs
  • Modifies registry class 19 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 55 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • System policy modification 1 TTPs 1 IoCs
    evasion
  • Views/modifies file attributes 1 TTPs 1 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\f6d2a096d2f84946c85ceba852d97989da318ad6bf12fb439d8db07018859887.exe
    "C:\Users\Admin\AppData\Local\Temp\f6d2a096d2f84946c85ceba852d97989da318ad6bf12fb439d8db07018859887.exe"
    1⤵
    • Disables RegEdit via registry modification
    • Event Triggered Execution: Image File Execution Options Injection
    • Loads dropped DLL
    • Writes to the Master Boot Record (MBR)
    • Sets desktop wallpaper using registry
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1808
    • C:\Windows\SysWOW64\attrib.exe
      attrib +s +a +h +r ¾¯¸æ.exe
      2⤵
      • Sets file to hidden
      • System Location Discovery: System Language Discovery
      • Views/modifies file attributes
      PID:4444
    • C:\Windows\SysWOW64\reg.exe
      reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System" /v DisableRegistryTools /t REG_DWORD /d 1 /f
      2⤵
      • Disables RegEdit via registry modification
      • System Location Discovery: System Language Discovery
      PID:3932
    • C:\Windows\SysWOW64\regini.exe
      regini www.ini
      2⤵
        PID:2284
      • C:\Windows\SysWOW64\regini.exe
        regini www.ini
        2⤵
          PID:5032
        • C:\Windows\SysWOW64\net.exe
          net user Admin 123456789876544567898765456789yfghjhbvbnmnbv
          2⤵
            PID:4736
        • C:\Windows\system32\AUDIODG.EXE
          C:\Windows\system32\AUDIODG.EXE 0x394 0x518
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1524
        • C:\Windows\system32\LogonUI.exe
          "LogonUI.exe" /flags:0x4 /state0:0xa3964055 /state1:0x41c64e6d
          1⤵
          • Modifies data under HKEY_USERS
          • Suspicious use of SetWindowsHookEx
          PID:1776

        Network

              MITRE ATT&CK Enterprise v15

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              Downloads

              ExtraDll.dll
              • Path C:\Users\Admin\AppData\Local\Temp\ExtraDll.dll
              • Size 97KB
              • SHA256 48773d597155dc39dd172c26867972da89dd61fcee0d138433eda26a2d8633b7
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              memory/1808-5-0x0000000074600000-0x000000007463C000-memory.dmp
              Download

              memory/1808-10-0x0000000074600000-0x000000007463C000-memory.dmp
              Download

              memory/1808-9-0x0000000074600000-0x000000007463C000-memory.dmp
              Download

              memory/1808-19-0x0000000074600000-0x000000007463C000-memory.dmp
              Download

              memory/1808-23-0x0000000074600000-0x000000007463C000-memory.dmp
              Download