Analysis

  • max time kernel
    166s
  • max time network
    137s
  • platform
    windows10_x64
  • resource
    win10-en
  • submitted
    09/09/2021, 11:54

General

  • Target
    994af9a2c1fe96e94a95f0bc85bb6a6fcac476d812a66ed4fd2f9055b34c5f43.dll
  • Size 1.7MB
  • Sample210909-n2x3babcbl
  • SHA256 994af9a2c1fe96e94a95f0bc85bb6a6fcac476d812a66ed4fd2f9055b34c5f43
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Dridex

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

  • Dridex Shellcode 1 IoCs

    Detects Dridex Payload shellcode injected in Explorer process.

  • Modifies Installed Components in the registry 2 TTPs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Drops file in Windows directory 5 IoCs
  • Program crash 1 IoCs
  • 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 registry class 31 IoCs
  • Suspicious behavior: EnumeratesProcesses 43 IoCs
  • Suspicious use of AdjustPrivilegeToken 41 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\994af9a2c1fe96e94a95f0bc85bb6a6fcac476d812a66ed4fd2f9055b34c5f43.dll,#1
    1⤵
    • Checks whether UAC is enabled
    • Suspicious behavior: EnumeratesProcesses
    PID:4720
  • C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 3008 -s 2864
    1⤵
    • Program crash
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:4484
  • C:\Windows\system32\CloudStorageWizard.exe
    C:\Windows\system32\CloudStorageWizard.exe
    1⤵
      PID:4512
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
      • Enumerates connected drives
      • Drops file in Windows directory
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2880
    • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
      "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
      1⤵
      • Drops file in Windows directory
      • Suspicious use of SetWindowsHookEx
      PID:200
    • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
      1⤵
      • Drops file in Windows directory
      • Enumerates system info in registry
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:852

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/2880-170-0x0000000002040000-0x0000000002041000-memory.dmp

          memory/3008-139-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-143-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-125-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-126-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-127-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-128-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-129-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-130-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-131-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-132-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-133-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-134-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-135-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-136-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-137-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-138-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-140-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-120-0x0000000001460000-0x0000000001461000-memory.dmp

          memory/3008-141-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-124-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-142-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-144-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-145-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-146-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-147-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-148-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-149-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-150-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-151-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-153-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-154-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-152-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-155-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-163-0x00007FFB59534560-0x00007FFB59535560-memory.dmp

          memory/3008-165-0x00007FFB59670000-0x00007FFB59672000-memory.dmp

          memory/3008-122-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-123-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/3008-121-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/4720-115-0x0000000140000000-0x00000001401B8000-memory.dmp

          memory/4720-119-0x000001D6F0870000-0x000001D6F0877000-memory.dmp