Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-07-2024 01:21

General

  • Target

    25c55b3375e83d2468334b7b4a0890d3.exe

  • Size

    43.5MB

  • MD5

    25c55b3375e83d2468334b7b4a0890d3

  • SHA1

    d8e901fe2d6adf9309aa8627306742baa4d0a38b

  • SHA256

    d76d821710495686c404cd23de38da5776b2826d6814192e63198c8b1c7df68e

  • SHA512

    ab311bebf707d359193423df2e3b216ce91c81cbab7a76fa2b4cfb4ef8256b5d66e29ba89c99009c035ee81d4dfc3be929584f38711a62e9e8fbbd83c6a4db1a

  • SSDEEP

    786432:9wYnIe84d7m8/Mw5CaXv2S3IPlv5OqlICX1atGLJcez+yzqFqikJaaZRTdcH+wEj:9wYn7dX/uyv28Id5PlIQk0qeyOq8DrRv

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.

  • Modifies system certificate store 2 TTPs 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\25c55b3375e83d2468334b7b4a0890d3.exe
    "C:\Users\Admin\AppData\Local\Temp\25c55b3375e83d2468334b7b4a0890d3.exe"
    1⤵
    • Loads dropped DLL
    • Writes to the Master Boot Record (MBR)
    • Modifies system certificate store
    PID:1520

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Defense Evasion

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\{CF6A7639-721B-434f-9D82-5A3738EB849A}.tmp\7z.dll
    Filesize

    1.1MB

    MD5

    2888126384d873cc49af32bbe34bb296

    SHA1

    fe74877bcaec93c7d67dab2ce8c86cfc38402d22

    SHA256

    aba19501a8033495664879e09e60e4788537d387cf038fa8769e5b178bccdcb4

    SHA512

    f283b721b27d85fbc7a4e1e91ab1683da0c3888f632873625c4c2b48caa170471aaa84e107230988f615d3f43e40a640607d6e6f641aed59788dee441801748a

  • C:\Users\Admin\AppData\Local\Temp\{FC23A590-8B7F-4322-8E4F-78748F87F40E}.tmp\NetBridge.dll
    Filesize

    231KB

    MD5

    9d145902fb5b9a6da62ac85761434e31

    SHA1

    c817d77f59e3767d75cf5f5298d6b5711308f7e5

    SHA256

    98d795d55329b1057f4fd590468e648a8c34b620207fd9a0a6953f3e98d1ea43

    SHA512

    bbb3109bcd5ded909bfdaeb7f4f006fc5928a9bc501bad5ae8ba9805bc0d924a2c4da8bbd215480db936d663852abd9b0435fa241a40224a4cd93c4b7aff79a9