Overview

overview

10

Static

static

9

cf61a74b80...32.dll

windows7-x64

10

cf61a74b80...32.dll

windows10-2004-x64

10

Analysis

  • max time kernel
    192s
  • max time network
    205s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/12/2022, 14:52

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General

  • Target
    cf61a74b8052fa68a6950d1db3b744996e147d419b5d9981e23f45ddd60cc332.dll
  • Size 167KB
  • Sample221201-r8vsbadb9t
  • SHA256 cf61a74b8052fa68a6950d1db3b744996e147d419b5d9981e23f45ddd60cc332
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
evasionupx

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
    evasion
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
    evasion
  • UPX packed file 2 IoCs

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

    upx
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
    adwarespyware
  • Modifies registry class 32 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of UnmapMainImage
    PID:2584
    • C:\Windows\system32\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\cf61a74b8052fa68a6950d1db3b744996e147d419b5d9981e23f45ddd60cc332.dll,#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:652
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe C:\Users\Admin\AppData\Local\Temp\cf61a74b8052fa68a6950d1db3b744996e147d419b5d9981e23f45ddd60cc332.dll,#1
        3⤵
        • Modifies visibility of file extensions in Explorer
        • Modifies visiblity of hidden/system files in Explorer
        • Enumerates connected drives
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4964
        • C:\Windows\SysWOW64\explorer.exe
          explorer C:\Users\Admin\AppData
          4⤵
            PID:2420
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:4504
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:3668

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            memory/4964-133-0x0000000010000000-0x000000001001B000-memory.dmp
            Download

            memory/4964-137-0x00000000028A0000-0x00000000028C1000-memory.dmp
            Download

            memory/4964-140-0x0000000010000000-0x000000001001B000-memory.dmp
            Download

            memory/4964-141-0x00000000028A0000-0x00000000028C1000-memory.dmp
            Download