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Analysis

  • max time kernel
    164s
  • max time network
    171s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/12/2023, 13:00

General

  • Target

    707aab5b6a36b0841bca699a86e2cba4.exe

  • Size

    65KB

  • MD5

    707aab5b6a36b0841bca699a86e2cba4

  • SHA1

    8bb8138c41da32e322964ab989ce1243d54c3326

  • SHA256

    e17500cb8fe610d75e8f4f8ded49aedb5efe458eeb5a8bce8d0839669fdc47f1

  • SHA512

    5ab63023a7deaa7d72e66165e8b7cfb8d7986935f278d48f86121436b932a22dfdca0912e0bbf78faba20a1c159a449e88da96c05c9e86aec5447dee0c6a41aa

  • SSDEEP

    1536:NOzLhppHB+klvIh31t/YETNMrvPhO3V8sCerjRIW8B49YedI7Kcs:kfh1otAgMrXhOcWjqW8BCYeKG7

Score
8/10

Malware Config

Signatures

  • Sets DLL path for service in the registry 2 TTPs 3 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Drops file in System32 directory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\707aab5b6a36b0841bca699a86e2cba4.exe
    "C:\Users\Admin\AppData\Local\Temp\707aab5b6a36b0841bca699a86e2cba4.exe"
    1⤵
    • Sets DLL path for service in the registry
    • Loads dropped DLL
    • Drops file in System32 directory
    PID:1940
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k vrdnxg
    1⤵
    • Deletes itself
    • Loads dropped DLL
    PID:2776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \??\c:\windows\SysWOW64\cuyrrn.dll

    Filesize

    58KB

    MD5

    58a442b1e3d70ddbd24d3ad769d2c900

    SHA1

    40d4f93d67c82ae6faf4567b3032c862bf94f56a

    SHA256

    56410a502dbc15bdc6a57a6b7add3d019a992fc1eead72733c31734130f5f1c4

    SHA512

    241f01bb8342ca135f9c4c30c54996bf21ad9dadf6ce63e57e7eaa4cdcf92b53ed59feecc5ba6d349faea236622b2ae1dba078e6c4f1d8d739a6a128c79fc2e5

  • memory/1940-0-0x0000000000400000-0x00000000004092E1-memory.dmp

    Filesize

    36KB

  • memory/1940-6-0x0000000010000000-0x000000001001B000-memory.dmp

    Filesize

    108KB

  • memory/1940-9-0x0000000000400000-0x00000000004092E1-memory.dmp

    Filesize

    36KB

  • memory/2776-10-0x0000000010000000-0x000000001001B000-memory.dmp

    Filesize

    108KB