Overview

overview

8

Static

static

d4d1427eb2...bd.exe

windows7-x64

6

d4d1427eb2...bd.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    151s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2022, 12:10

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General

  • Target

    d4d1427eb21b4207ef3953aa6a0eb563639465a6e6e9322040182901c90cccbd.exe

  • Size

    825KB

  • MD5

    67d4784ce4cfb6d67beba813bccb33a0

  • SHA1

    cf8a169021047ad309e3000377cf336c237adcf8

  • SHA256

    d4d1427eb21b4207ef3953aa6a0eb563639465a6e6e9322040182901c90cccbd

  • SHA512

    f9fc8ceb41e67176994abdf20bf6aaac328200b509f1b4fd2f6ebd157becc2f712c30ecbf446e83592052bef6274e37dcce733ab2bddb4d200da7c239b42c5de

  • SSDEEP

    12288:oCoyV73KuV+Iv9vYX1caKRQF9afV5umqCXLOnRhuqC4x07KEaCyvYLLx:tOucIvY1catF9xm5X6npx07yvYLt

Score
8/10
bootkitpersistence

Malware Config

Signatures

  • Modifies Installed Components in the registry 2 TTPs 1 IoCs
    persistence
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • 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
  • Drops file in System32 directory 3 IoCs
  • 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 40 IoCs

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 14 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 20 IoCs
  • Suspicious use of FindShellTrayWindow 39 IoCs
  • Suspicious use of SendNotifyMessage 26 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d4d1427eb21b4207ef3953aa6a0eb563639465a6e6e9322040182901c90cccbd.exe
    "C:\Users\Admin\AppData\Local\Temp\d4d1427eb21b4207ef3953aa6a0eb563639465a6e6e9322040182901c90cccbd.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Writes to the Master Boot Record (MBR)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:4296
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:3628
    • C:\Windows\explorer.exe
      explorer.exe /LOADSAVEDWINDOWS
      2⤵
      • Modifies Installed Components in the registry
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:3080
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
    1⤵
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:3260
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:4300
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
    1⤵
    • Drops file in System32 directory
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:2464
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:2796
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:5088
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:3172
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:1696

Network

MITRE ATT&CK Enterprise v6

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Downloads

  • memory/4296-132-0x0000000000400000-0x0000000000A10000-memory.dmp

    Filesize

    6.1MB

    Download

  • memory/4296-133-0x0000000000400000-0x0000000000A10000-memory.dmp

    Filesize

    6.1MB

    Download

  • memory/4296-135-0x0000000000400000-0x0000000000A10000-memory.dmp

    Filesize

    6.1MB

    Download

  • memory/4296-137-0x0000000000400000-0x0000000000A10000-memory.dmp

    Filesize

    6.1MB

    Download

  • memory/4296-138-0x0000000000400000-0x0000000000A10000-memory.dmp

    Filesize

    6.1MB

    Download