Analysis

  • max time kernel
    189s
  • max time network
    192s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 18:36

General

  • Target

    cb01a06e06cb40d5a3da85462415df9a03d8682524e16a1ac361aaa0883f734e.exe

  • Size

    106KB

  • MD5

    0256b9114ceef0d6d26dc0c2c670e2c1

  • SHA1

    0fedcec54e731ae0d1d0bb35206de668bbf4381e

  • SHA256

    cb01a06e06cb40d5a3da85462415df9a03d8682524e16a1ac361aaa0883f734e

  • SHA512

    eac638db6fc6a44706866e7fab2c9d4b76b9714bda420d1698a94e91abc4f898f6d8cb5c22d292a17dd162dc8e9b4cc2bd3248ca747bbddb71a7446650887bf9

  • SSDEEP

    3072:lvrgj+PhRe3skijnAB6Icxj68oWdbgyvRcSvUvRKoutQ7NUyz67M:lvsjAg3skiz265xj6nmbgy5TARKoS6TJ

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 18 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • UAC bypass 3 TTPs 3 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Sets file execution options in registry 2 TTPs 64 IoCs
  • UPX packed file 5 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Windows security modification 2 TTPs 15 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Control Panel 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Modifies registry class 24 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • System policy modification 1 TTPs 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cb01a06e06cb40d5a3da85462415df9a03d8682524e16a1ac361aaa0883f734e.exe
    "C:\Users\Admin\AppData\Local\Temp\cb01a06e06cb40d5a3da85462415df9a03d8682524e16a1ac361aaa0883f734e.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4560
    • C:\Users\Admin\E696D64614\winlogon.exe
      "C:\Users\Admin\E696D64614\winlogon.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4468
      • C:\Users\Admin\E696D64614\winlogon.exe
        Error 448
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Modifies visibility of file extensions in Explorer
        • Modifies visiblity of hidden/system files in Explorer
        • UAC bypass
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Sets file execution options in registry
        • Windows security modification
        • Checks whether UAC is enabled
        • Modifies Control Panel
        • Modifies Internet Explorer settings
        • Modifies Internet Explorer start page
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • System policy modification
        PID:2640
  • 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:4460
    • 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:2436
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2436 CREDAT:17410 /prefetch:2
        2⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:4748

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\E696D64614\winlogon.exe

      Filesize

      106KB

      MD5

      0256b9114ceef0d6d26dc0c2c670e2c1

      SHA1

      0fedcec54e731ae0d1d0bb35206de668bbf4381e

      SHA256

      cb01a06e06cb40d5a3da85462415df9a03d8682524e16a1ac361aaa0883f734e

      SHA512

      eac638db6fc6a44706866e7fab2c9d4b76b9714bda420d1698a94e91abc4f898f6d8cb5c22d292a17dd162dc8e9b4cc2bd3248ca747bbddb71a7446650887bf9

    • C:\Users\Admin\E696D64614\winlogon.exe

      Filesize

      106KB

      MD5

      0256b9114ceef0d6d26dc0c2c670e2c1

      SHA1

      0fedcec54e731ae0d1d0bb35206de668bbf4381e

      SHA256

      cb01a06e06cb40d5a3da85462415df9a03d8682524e16a1ac361aaa0883f734e

      SHA512

      eac638db6fc6a44706866e7fab2c9d4b76b9714bda420d1698a94e91abc4f898f6d8cb5c22d292a17dd162dc8e9b4cc2bd3248ca747bbddb71a7446650887bf9

    • C:\Users\Admin\E696D64614\winlogon.exe

      Filesize

      106KB

      MD5

      0256b9114ceef0d6d26dc0c2c670e2c1

      SHA1

      0fedcec54e731ae0d1d0bb35206de668bbf4381e

      SHA256

      cb01a06e06cb40d5a3da85462415df9a03d8682524e16a1ac361aaa0883f734e

      SHA512

      eac638db6fc6a44706866e7fab2c9d4b76b9714bda420d1698a94e91abc4f898f6d8cb5c22d292a17dd162dc8e9b4cc2bd3248ca747bbddb71a7446650887bf9

    • memory/2640-142-0x0000000000000000-mapping.dmp

    • memory/2640-143-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/2640-146-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/2640-147-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/2640-150-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/2640-151-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/4468-141-0x0000000000400000-0x000000000044E000-memory.dmp

      Filesize

      312KB

    • memory/4468-135-0x0000000000000000-mapping.dmp

    • memory/4560-139-0x0000000000400000-0x000000000044E000-memory.dmp

      Filesize

      312KB

    • memory/4560-132-0x0000000000400000-0x000000000044E000-memory.dmp

      Filesize

      312KB