Analysis

  • max time kernel
    143s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/02/2024, 22:55

General

  • Target
    VirusShare-00c7e24b52d0f69c114772ed0a27f912.exe
  • Size 334KB
  • Sample240202-2wk3fsdafl
  • SHA256 0577ada4871e64c61659a7d5a3d84074a40cfcef27a61eec48e5d19f78d3b127
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • UPX dump on OEP (original entry point) 8 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Loads dropped DLL 6 IoCs
  • UPX packed file 8 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Maps connected drives based on registry 3 TTPs 6 IoCs

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

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

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

  • Modifies Internet Explorer Protected Mode 1 TTPs 1 IoCs
  • Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 38 IoCs
  • Modifies registry class 10 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\VirusShare-00c7e24b52d0f69c114772ed0a27f912.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare-00c7e24b52d0f69c114772ed0a27f912.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Installs/modifies Browser Helper Object
    • Maps connected drives based on registry
    • Drops file in System32 directory
    • Modifies Internet Explorer Protected Mode
    • Modifies Internet Explorer Protected Mode Banner
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1620
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\system32\regsvr32.exe" /s "C:\Windows\system32\xavuhwncke.dll"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Installs/modifies Browser Helper Object
      • Maps connected drives based on registry
      • Modifies registry class
      PID:2348
  • C:\Program Files (x86)\Internet Explorer\ielowutil.exe
    "C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding
    1⤵
      PID:940
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1244
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1244 CREDAT:17410 /prefetch:2
        2⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:1084

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
          • Size 471B
          • SHA256 3e1607026f332ae19539f0621c8b18c820245d196febf8bf258253667ebc94d8
          • MD5 SHA1 SHA512

          7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
          • Size 404B
          • SHA256 86c50d6f5c9904609386d8c7efd9023de8e62d66b4fed7f8918722d0b6cdf30b
          • MD5 SHA1 SHA512

          verC63E.tmp

          • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verC63E.tmp
          • Size 15KB
          • SHA256 557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1
          • MD5 SHA1 SHA512 SSDEEP

          suggestions[1].en-US

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\Q15AV1NQ\suggestions[1].en-US
          • Size 17KB
          • SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
          • MD5 SHA1 SHA512 SSDEEP

          nsd4E03.tmp.dll

          • Path C:\Users\Admin\AppData\Local\Temp\nsd4E03.tmp.dll
          • Size 282KB
          • SHA256 4af4544a7186f81c4a0b6a77eb25540824ab261bd75db18874003498a04edaa8
          • MD5 SHA1 SHA512 SSDEEP

          System.dll

          • Path C:\Users\Admin\AppData\Local\Temp\nsz4612.tmp\System.dll
          • Size 11KB
          • SHA256 dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f
          • MD5 SHA1 SHA512 SSDEEP

          memory/1620-22-0x00000000028A0000-0x0000000002960000-memory.dmp

          memory/1620-26-0x00000000406E0000-0x00000000407A0000-memory.dmp

          memory/1620-23-0x00000000028A0000-0x0000000002960000-memory.dmp

          memory/1620-14-0x00000000406E0000-0x00000000407A0000-memory.dmp

          memory/2348-30-0x00000000406E0000-0x00000000407A0000-memory.dmp

          memory/2348-29-0x00000000406E0000-0x00000000407A0000-memory.dmp

          memory/2348-46-0x00000000406E0000-0x00000000407A0000-memory.dmp

          memory/2348-65-0x00000000406E0000-0x00000000407A0000-memory.dmp

          memory/2348-66-0x00000000406E0000-0x00000000407A0000-memory.dmp