Analysis

  • max time kernel
    147s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    22-05-2024 14:30

General

  • Target

    a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe

  • Size

    652KB

  • MD5

    3783014e89435e8f979155435933d4f0

  • SHA1

    c711fb0d97d5d363e241ed5532c6331e0fe8aa57

  • SHA256

    a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f

  • SHA512

    611452baa7692ffd4a5f3fb73d60a0e1b4ecc8a77d1d94021c87e369909c8d9d583c5e2ae575fd7ebb95b5a3e70fb670fa4d97a4594644b74d1bb1adc9c75010

  • SSDEEP

    12288:NgeDYSnG4nSUWbjU0WHUMTJRewXLvWkgTkVj:tDYSnG4n2bjmHUMhvKI

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe
    "C:\Users\Admin\AppData\Local\Temp\a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\Users\Admin\AppData\Local\Temp\a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe
      "C:\Users\Admin\AppData\Local\Temp\a7a04842ca3e817e5ae28cf389f590ba2a4f76c63e25249419bad63277b7312f.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetWindowsHookEx
      PID:1572

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\Pictures\belejrernes.lnk

    Filesize

    1KB

    MD5

    b7587f5155c372c444f16a4440646869

    SHA1

    17e3b2a17cf705a5446d5a64661adcd53d3849f8

    SHA256

    d34f554d253fc59e51ce24fe37ff1b71588a299f720ad67312e5701eb270c6f2

    SHA512

    9c13e79fe47e21c9405877ccc85c5e91843e26ec5afa4b2dc43b1a1c18a66875b224b3586dec182e3587ffdefd297a620aaf2720f26818ace95d620a987f62ca

  • \Users\Admin\AppData\Local\Temp\nsdEE1.tmp\System.dll

    Filesize

    11KB

    MD5

    fc3772787eb239ef4d0399680dcc4343

    SHA1

    db2fa99ec967178cd8057a14a428a8439a961a73

    SHA256

    9b93c61c9d63ef8ec80892cc0e4a0877966dca9b0c3eb85555cebd2ddf4d6eed

    SHA512

    79e491ca4591a5da70116114b7fbb66ee15a0532386035e980c9dfe7afb59b1f9d9c758891e25bfb45c36b07afd3e171bac37a86c887387ef0e80b1eaf296c89

  • memory/1572-292-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/1572-294-0x00000000004B0000-0x0000000001512000-memory.dmp

    Filesize

    16.4MB

  • memory/1572-295-0x0000000001520000-0x0000000006D7F000-memory.dmp

    Filesize

    88.4MB

  • memory/2784-291-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB