Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-08-2023 12:59

General

  • Target

    tmp.exe

  • Size

    274KB

  • MD5

    a0bfccb8cc68d350b02287d70507e70d

  • SHA1

    3b274838cd098c2f26ece2928300fe4f1e24a9d4

  • SHA256

    d587be51aa8da3d6ec72c1c3ad9c24c04c5ef97d4da7f8edb9c0ae04f6e111ab

  • SHA512

    2e697d859c3c40acf033b20716fd2ecf427dbd85db470fd42907090b17dd73b7ba2506a9c56836d75f9f52ffead67258c7fb24de03715293d63ba0c349ff8cec

  • SSDEEP

    6144:PYa689fXW3LMiiTEqOyYKFEZWAQoAALLg6UM6KYUvjuyT2XH9PDD0:PYS9fXW+TEqdXkLg6YUrui2Xd7D0

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 62 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4400
    • C:\Users\Admin\AppData\Local\Temp\tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4420

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\nst8261.tmp\wkybeb.dll

    Filesize

    49KB

    MD5

    9da370474c2a7427495e83bed70b87ab

    SHA1

    de2b22ba5cf618e0fc6ff30a8927820f1544068a

    SHA256

    9cba1183ed6a9a89a34805730da01edaed2026b3d3cad0e3ef9710fbeb3ec442

    SHA512

    bc736a5dcf5d6e227773dd59747eeb0f0035f09bc93bb85d9dc78c48e1fa62a17cef3f200102a47b94fe868020caf52aa0e3cc93b93d26db483b46e5f7aef54a

  • memory/4400-139-0x00000000000A0000-0x00000000001A0000-memory.dmp

    Filesize

    1024KB

  • memory/4420-140-0x0000000000400000-0x0000000000431000-memory.dmp

    Filesize

    196KB

  • memory/4420-141-0x0000000000A40000-0x0000000000D8A000-memory.dmp

    Filesize

    3.3MB

  • memory/4420-142-0x0000000000400000-0x0000000000431000-memory.dmp

    Filesize

    196KB