Analysis

  • max time kernel
    74s
  • max time network
    189s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    12/10/2023, 17:15

General

  • Target

    f133554fededc042fd9392c4271204bfb43bc8dba24fac417a289619364e2b7f.exe

  • Size

    15.0MB

  • MD5

    dc4d3bcba312f396dd23b32a0494e0f9

  • SHA1

    e4018ece281df6f54622edbdaad479ede6872da9

  • SHA256

    f133554fededc042fd9392c4271204bfb43bc8dba24fac417a289619364e2b7f

  • SHA512

    a40ad971a00738653f29b7b59fae872bb3685e36dcecae2f22b7e5ca2370ea737a06464d889026c94ad62fb4274f1d7051d2bdbc13578e977d0e84d170ec1e44

  • SSDEEP

    393216:vBEAdhXbKYbiJ4WZ6/+o/dcg8xEm4KHKHCI:OAbhbgno/+oN8xEmt+CI

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
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f133554fededc042fd9392c4271204bfb43bc8dba24fac417a289619364e2b7f.exe
    "C:\Users\Admin\AppData\Local\Temp\f133554fededc042fd9392c4271204bfb43bc8dba24fac417a289619364e2b7f.exe"
    1⤵
    • Loads dropped DLL
    • Writes to the Master Boot Record (MBR)
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:2776
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2776 -s 928
      2⤵
      • Program crash
      PID:1328

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\{2FDFA1C4-A9EF-48c0-A476-594618053F8A}.tmp\NetBridge.dll

    Filesize

    238KB

    MD5

    8786d469338c30e0ba9fedfc62bd5197

    SHA1

    5fb12028ceae9772f938e1b98b699f0e02e32718

    SHA256

    beeaf8b72f7008e9adabacfcd85e32a50747a0dfb5c86802aeb973bd1f5c3d2f

    SHA512

    5db1e5b78e62cda81a63e8e712e720f87a7c7a539237a55a9098c076f9fb4e0b5adb83383c23657b4ccc90c117e55e3946a399cdf3d15cb94444b203d9d6c45c

  • \Users\Admin\AppData\Local\Temp\{2FDFA1C4-A9EF-48c0-A476-594618053F8A}.tmp\NetBridge.dll

    Filesize

    238KB

    MD5

    8786d469338c30e0ba9fedfc62bd5197

    SHA1

    5fb12028ceae9772f938e1b98b699f0e02e32718

    SHA256

    beeaf8b72f7008e9adabacfcd85e32a50747a0dfb5c86802aeb973bd1f5c3d2f

    SHA512

    5db1e5b78e62cda81a63e8e712e720f87a7c7a539237a55a9098c076f9fb4e0b5adb83383c23657b4ccc90c117e55e3946a399cdf3d15cb94444b203d9d6c45c

  • \Users\Admin\AppData\Local\Temp\{DBB5B7CD-86DD-47d6-A110-3D2F42CB4BE1}.tmp\7z.dll

    Filesize

    1.1MB

    MD5

    2706693dda10c6cc79eed24c56d4e5ef

    SHA1

    4f34ef1bd49273a0d260b9dab15c73eb0ccb6383

    SHA256

    0edad8a1af22d5b97c1f324791c86243a6ecce7b5a9d2f30415af99aba9129c3

    SHA512

    7e7f7ae894528587ba33b6e10999549bb9a2ec2748b5662fa1b8806e5f4ce33af47507b3ef2954f2747a76b5b7c775c1cd671061f577c5016d1f8ba165bbe21c

  • memory/2776-27-0x00000000005B0000-0x00000000005B1000-memory.dmp

    Filesize

    4KB