Overview

overview

10

Static

static

2020-06-03...in.dll

windows7_x64

10

2020-06-03...in.dll

windows10_x64

10

Analysis

  • max time kernel
    126s
  • max time network
    117s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09/11/2020, 20:47

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General

  • Target
    2020-06-03-example-of-persistent-Dridex-DLL-2-of-3.bin.dll
  • Size 692KB
  • Sample201109-jy7g5apste
  • SHA256 36b5a8e87838e415fdd4a70b2b6cd405ab8db7771ed08efc2c80ba016818dea7
  • MD5 SHA1 SHA512
Score
10/10
dridexbotnetevasionloaderpersistencetrojan

Malware Config

Signatures

  • Dridex

    Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.

    botnetdridex
  • Dridex Loader 2 IoCs

    Detects Dridex both x86 and x64 loader in memory.

    botnetloader
  • Executes dropped EXE 3 IoCs
  • Modifies Installed Components in the registry 2 TTPs
    persistence
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
    evasiontrojan
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 12 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies Control Panel 5 IoCs
    evasion
  • Modifies registry class 31 IoCs
  • Suspicious behavior: EnumeratesProcesses 294 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of FindShellTrayWindow 52 IoCs
  • Suspicious use of SendNotifyMessage 23 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\2020-06-03-example-of-persistent-Dridex-DLL-2-of-3.bin.dll,#1
    1⤵
    • Checks whether UAC is enabled
    • Suspicious behavior: EnumeratesProcesses
    PID:480
  • C:\Windows\system32\SystemPropertiesHardware.exe
    C:\Windows\system32\SystemPropertiesHardware.exe
    1⤵
      PID:184
    • C:\Users\Admin\AppData\Local\Q8P\SystemPropertiesHardware.exe
      C:\Users\Admin\AppData\Local\Q8P\SystemPropertiesHardware.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks whether UAC is enabled
      PID:196
    • C:\Windows\system32\ProximityUxHost.exe
      C:\Windows\system32\ProximityUxHost.exe
      1⤵
        PID:2872
      • C:\Users\Admin\AppData\Local\0UbU\ProximityUxHost.exe
        C:\Users\Admin\AppData\Local\0UbU\ProximityUxHost.exe
        1⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks whether UAC is enabled
        PID:2304
      • C:\Windows\system32\wlrmdr.exe
        C:\Windows\system32\wlrmdr.exe
        1⤵
          PID:2416
        • C:\Users\Admin\AppData\Local\C9iOxuhWc\wlrmdr.exe
          C:\Users\Admin\AppData\Local\C9iOxuhWc\wlrmdr.exe
          1⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks whether UAC is enabled
          PID:2604
        • C:\Windows\explorer.exe
          explorer.exe
          1⤵
          • Enumerates connected drives
          • Checks SCSI registry key(s)
          • Modifies Control Panel
          • Modifies registry class
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          PID:2084
        • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
          "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
          1⤵
          • Modifies Control Panel
          • Suspicious use of SetWindowsHookEx
          PID:1156
        • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
          "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
          1⤵
          • Enumerates system info in registry
          • Modifies Control Panel
          • Modifies registry class
          • Suspicious use of SetWindowsHookEx
          PID:620

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              memory/480-0-0x0000000140000000-0x000000014008C000-memory.dmp
              Download

              memory/3012-3-0x0000000140000000-0x00000001400AD000-memory.dmp
              Download

              memory/3012-2-0x0000000140000000-0x00000001400AD000-memory.dmp
              Download

              memory/3012-1-0x0000000002C10000-0x0000000002C11000-memory.dmp
              Download