Overview

overview

10

Static

static

8

a8d2339bbf...09.exe

windows7-x64

10

a8d2339bbf...09.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    153s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    11/10/2022, 14:57

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General

  • Target

    a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe

  • Size

    248KB

  • MD5

    111bb403113bf27e48e84bc66fab0a41

  • SHA1

    ab8510318775ea9a4ccf47a3d6fc85ff880bbc0e

  • SHA256

    a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609

  • SHA512

    389336aca1d7f23a349905a33b2090943f309a814bb83c324dc7cafed1fb4f12d0201818c22d85affb1368d3ef5cb8d803dd10ecae0373f9a9b14ef3aaae2a0d

  • SSDEEP

    6144:1uMJWY+qaHEQCcYfSBYJbQCjRcqESEgm6Anhc1kG6EmRzxH:1+YcUc6SBLLTSEgBAnhc1kGsxH

Score
10/10
evasionpersistenceupx

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Disables RegEdit via registry modification 1 IoCs
    evasion
  • Disables Task Manager via registry modification
    evasion
  • Modifies Installed Components in the registry 2 TTPs 5 IoCs
    persistence
  • UPX packed file 2 IoCs

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

    upx
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 5 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 25 IoCs
  • Suspicious behavior: EnumeratesProcesses 28 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe
    "C:\Users\Admin\AppData\Local\Temp\a8d2339bbfd99ebcf48d5ca04beb4634e3711088031d16523e18bfa218f66609.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Disables RegEdit via registry modification
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1612
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /C AT /delete /yes
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1956
      • C:\Windows\SysWOW64\at.exe
        AT /delete /yes
        3⤵
          PID:1704
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /C AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\WORD.exe
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1528
        • C:\Windows\SysWOW64\at.exe
          AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\WORD.exe
          3⤵
            PID:1376
      • C:\Windows\explorer.exe
        explorer.exe
        1⤵
        • Modifies Installed Components in the registry
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1640
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x588
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1664
      • C:\Windows\explorer.exe
        explorer.exe
        1⤵
        • Modifies Installed Components in the registry
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1688
      • C:\Windows\explorer.exe
        explorer.exe
        1⤵
        • Modifies Installed Components in the registry
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1980
      • C:\Windows\explorer.exe
        explorer.exe
        1⤵
        • Modifies Installed Components in the registry
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SendNotifyMessage
        PID:1408
      • C:\Windows\explorer.exe
        explorer.exe
        1⤵
        • Modifies Installed Components in the registry
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        PID:1912

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • memory/1612-54-0x0000000076681000-0x0000000076683000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1612-55-0x0000000000400000-0x000000000049D000-memory.dmp

        Filesize

        628KB

        Download

      • memory/1612-62-0x0000000000400000-0x000000000049D000-memory.dmp

        Filesize

        628KB

        Download

      • memory/1640-63-0x000007FEFBD61000-0x000007FEFBD63000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1688-64-0x000007FEFB981000-0x000007FEFB983000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1980-65-0x000007FEFAFB1000-0x000007FEFAFB3000-memory.dmp

        Filesize

        8KB

        Download