Analysis

  • max time kernel
    4294208s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    04-03-2022 13:54

General

  • Target

    7bcd4ec18fc4a56db30e0aaebd44e2988f98f7b5d8c14f6689f650b4f11e16c0.dll

  • Size

    219KB

  • MD5

    6c10466ad7c153e7f949fa3c6600b6ac

  • SHA1

    5d009f79383a81622eefd8b183efb23fbf96a62f

  • SHA256

    7bcd4ec18fc4a56db30e0aaebd44e2988f98f7b5d8c14f6689f650b4f11e16c0

  • SHA512

    54a7565a2ce2030b4b865835e13e2de6b7b5bb8f171e7d9db28c3fd1de8d98b7072f50effeb5d15a6ca66a2ff309cbe9b7732154f4a2855ad20c79803f0df33e

Score
6/10

Malware Config

Signatures

  • Drops desktop.ini file(s) 10 IoCs
  • Enumerates connected drives 3 TTPs 1 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.

  • Drops file in Program Files directory 64 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\7bcd4ec18fc4a56db30e0aaebd44e2988f98f7b5d8c14f6689f650b4f11e16c0.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1784
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\7bcd4ec18fc4a56db30e0aaebd44e2988f98f7b5d8c14f6689f650b4f11e16c0.dll,#1
      2⤵
      • Drops desktop.ini file(s)
      • Enumerates connected drives
      • Writes to the Master Boot Record (MBR)
      • Drops file in Program Files directory
      PID:1832

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Bootkit

1
T1067

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1832-54-0x0000000075251000-0x0000000075253000-memory.dmp
    Filesize

    8KB