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Analysis

  • max time kernel
    149s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    10/12/2023, 18:21

General

  • Target

    Server.exe

  • Size

    43KB

  • MD5

    62e768f23a7ab49b2e263275f1ec3d32

  • SHA1

    79abc6204488b22e4beb5dddab6c84a2c7afc372

  • SHA256

    e167373801728d455bbf3243b7c576f2fc05192dc9d5c0b91dc840100da59ad6

  • SHA512

    9622be1c1efe683372aa0758c0bf41a64494e540b82684b230edda038a2ed5b10c02f4269c86e1f699369dd0440d6a97829a0b16fa1a8365e58d84d848a02e0d

  • SSDEEP

    768:jSXTp8yN83MSaCA/Cr+9WTO2CK58196HsjHvCqvtq1YLsL1/x0NVbK7z/8HCCjP9:0RWfQYklW1p0DHCCrk

Score
8/10

Malware Config

Signatures

  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    "C:\Users\Admin\AppData\Local\Temp\Server.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3000
    • C:\Users\Admin\AppData\Local\Temp\Builder.exe
      "C:\Users\Admin\AppData\Local\Temp\Builder.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2620
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Builder.exe" "Builder.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:2600

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\Builder.exe

    Filesize

    43KB

    MD5

    62e768f23a7ab49b2e263275f1ec3d32

    SHA1

    79abc6204488b22e4beb5dddab6c84a2c7afc372

    SHA256

    e167373801728d455bbf3243b7c576f2fc05192dc9d5c0b91dc840100da59ad6

    SHA512

    9622be1c1efe683372aa0758c0bf41a64494e540b82684b230edda038a2ed5b10c02f4269c86e1f699369dd0440d6a97829a0b16fa1a8365e58d84d848a02e0d

  • memory/2620-12-0x0000000000550000-0x0000000000590000-memory.dmp

    Filesize

    256KB

  • memory/2620-11-0x0000000074600000-0x0000000074BAB000-memory.dmp

    Filesize

    5.7MB

  • memory/2620-14-0x0000000074600000-0x0000000074BAB000-memory.dmp

    Filesize

    5.7MB

  • memory/2620-17-0x0000000074600000-0x0000000074BAB000-memory.dmp

    Filesize

    5.7MB

  • memory/3000-0-0x0000000074600000-0x0000000074BAB000-memory.dmp

    Filesize

    5.7MB

  • memory/3000-1-0x0000000074600000-0x0000000074BAB000-memory.dmp

    Filesize

    5.7MB

  • memory/3000-2-0x0000000000A60000-0x0000000000AA0000-memory.dmp

    Filesize

    256KB

  • memory/3000-10-0x0000000074600000-0x0000000074BAB000-memory.dmp

    Filesize

    5.7MB