Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/08/2024, 15:16

General

  • Target

    b41d20424f09c0e56789bb0758580094410ec379c675fb854ae16e2193505d8e.exe

  • Size

    4.8MB

  • MD5

    9d1fc1f9ed629277d2e86e1d976dec81

  • SHA1

    a66041233cc6c004978cf63b06c5d70d2b751f35

  • SHA256

    b41d20424f09c0e56789bb0758580094410ec379c675fb854ae16e2193505d8e

  • SHA512

    23ef5e569b2699ec83a73e2bb93e3a3ea2edb74bdd1854b529cbf0688b1fe3fcb409fb9d5d7cd6cfcd6cfa602cb6856e3e712821b973ce78dc5a767b270f668a

  • SSDEEP

    98304:cVeM4VwHuokyfK8PGcx2HynIiprw0F80XZeG4:6AVw6kx2SnIe84eG4

Malware Config

Signatures

  • Loads dropped DLL 2 IoCs
  • Checks installed software on the system 1 TTPs

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

  • 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 2 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b41d20424f09c0e56789bb0758580094410ec379c675fb854ae16e2193505d8e.exe
    "C:\Users\Admin\AppData\Local\Temp\b41d20424f09c0e56789bb0758580094410ec379c675fb854ae16e2193505d8e.exe"
    1⤵
    • Loads dropped DLL
    • Writes to the Master Boot Record (MBR)
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies system certificate store
    PID:1212
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1212 -s 1964
      2⤵
      • Program crash
      PID:4820
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1212 -ip 1212
    1⤵
      PID:4980

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\lds_setup.log

      Filesize

      1KB

      MD5

      354bb0ebc4587e16337c30d086ca6151

      SHA1

      01513270474cd53a44cf59d4e16847361fd299ba

      SHA256

      bb2de68e69f01fbe80ca12b48745c9a18a6436350d45a44b3e078ebbce40486b

      SHA512

      af9ca058f7113b71ab9e410158fd46dddca0e26d3efd14895f319395d59df965be7f05d210ac5830a7a0dca3ef1b2ef12f8dfcf474490adda6fab8608403cdae

    • C:\Users\Admin\AppData\Local\Temp\{319C5581-06A3-4dad-B7FB-732D908FDF2E}.tmp\7z.dll

      Filesize

      1.1MB

      MD5

      2888126384d873cc49af32bbe34bb296

      SHA1

      fe74877bcaec93c7d67dab2ce8c86cfc38402d22

      SHA256

      aba19501a8033495664879e09e60e4788537d387cf038fa8769e5b178bccdcb4

      SHA512

      f283b721b27d85fbc7a4e1e91ab1683da0c3888f632873625c4c2b48caa170471aaa84e107230988f615d3f43e40a640607d6e6f641aed59788dee441801748a

    • C:\Users\Admin\AppData\Local\Temp\{506449EA-E2FB-4e84-9671-28718A1D214B}.tmp\NetBridge.dll

      Filesize

      231KB

      MD5

      9d145902fb5b9a6da62ac85761434e31

      SHA1

      c817d77f59e3767d75cf5f5298d6b5711308f7e5

      SHA256

      98d795d55329b1057f4fd590468e648a8c34b620207fd9a0a6953f3e98d1ea43

      SHA512

      bbb3109bcd5ded909bfdaeb7f4f006fc5928a9bc501bad5ae8ba9805bc0d924a2c4da8bbd215480db936d663852abd9b0435fa241a40224a4cd93c4b7aff79a9