Analysis

  • max time kernel
    152s
  • max time network
    171s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-12-2022 22:05

General

  • Target

    e78b73e8cc52a754938328bc1975e0d4e7896577ba9a0f8ac8d50de9a3db7b4f.exe

  • Size

    1.3MB

  • MD5

    f60f1039d3d2edb2aac7114ad53c973b

  • SHA1

    0f1a1f068b50726f1b31d32f2a848d89eff6fd57

  • SHA256

    e78b73e8cc52a754938328bc1975e0d4e7896577ba9a0f8ac8d50de9a3db7b4f

  • SHA512

    03e321a7fbdea343f95ed47533fd30ad2955b714b8a6d494c00c556d5e178ef11e7e1052b0660fc7f75af523496121dc79006d792e1028c9065aae302bfa8428

  • SSDEEP

    24576:gZusv/DwNLHPJH6pYCkeKW/8XwQmRtPF+mviWavPzGLgO2uptmh:vsv/GvtkHKW/8XwQUhahyLgwpt+

Malware Config

Signatures

  • UAC bypass 3 TTPs 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Modifies Windows Firewall 1 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e78b73e8cc52a754938328bc1975e0d4e7896577ba9a0f8ac8d50de9a3db7b4f.exe
    "C:\Users\Admin\AppData\Local\Temp\e78b73e8cc52a754938328bc1975e0d4e7896577ba9a0f8ac8d50de9a3db7b4f.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1952
    • C:\Users\Admin\AppData\Local\Temp\MMBPlayer\serverr.exe
      "C:\Users\Admin\AppData\Local\Temp\MMBPlayer\serverr.exe"
      2⤵
      • UAC bypass
      • Executes dropped EXE
      • Checks computer location settings
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:4136
      • C:\Program Files (x86)\sqlserver.exe
        "C:\Program Files (x86)\sqlserver.exe"
        3⤵
        • UAC bypass
        • Executes dropped EXE
        • Drops startup file
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Drops file in Program Files directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        • System policy modification
        PID:3776
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Windows\SysWOW64\wscript.exe" "wscript.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          PID:4412
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Program Files (x86)\sqlserver.exe" "sqlserver.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          PID:4176
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x460 0x3cc
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3056

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\sqlserver.exe

    Filesize

    62KB

    MD5

    3edb0d68414bb303c7b1088f571519cd

    SHA1

    f4f891f477a5b9ce6babb515cea7736f3b570c18

    SHA256

    73f44169a97696ce7701455ff4eb02677ca3eecace96f3597e4eefd3bfe6f240

    SHA512

    0a8cffb39df9d38d391f2035b0829b8aa926a5c536172fa1499d6352a8b07592f333cb5f7eeb1e72bc0817ac175807e38992a1982dbcc70cb222f4b6c22a5b69

  • C:\Program Files (x86)\sqlserver.exe

    Filesize

    62KB

    MD5

    3edb0d68414bb303c7b1088f571519cd

    SHA1

    f4f891f477a5b9ce6babb515cea7736f3b570c18

    SHA256

    73f44169a97696ce7701455ff4eb02677ca3eecace96f3597e4eefd3bfe6f240

    SHA512

    0a8cffb39df9d38d391f2035b0829b8aa926a5c536172fa1499d6352a8b07592f333cb5f7eeb1e72bc0817ac175807e38992a1982dbcc70cb222f4b6c22a5b69

  • C:\Users\Admin\AppData\Local\Temp\MMBPlayer\Serverr.exe

    Filesize

    62KB

    MD5

    3edb0d68414bb303c7b1088f571519cd

    SHA1

    f4f891f477a5b9ce6babb515cea7736f3b570c18

    SHA256

    73f44169a97696ce7701455ff4eb02677ca3eecace96f3597e4eefd3bfe6f240

    SHA512

    0a8cffb39df9d38d391f2035b0829b8aa926a5c536172fa1499d6352a8b07592f333cb5f7eeb1e72bc0817ac175807e38992a1982dbcc70cb222f4b6c22a5b69

  • C:\Users\Admin\AppData\Local\Temp\MMBPlayer\serverr.exe

    Filesize

    62KB

    MD5

    3edb0d68414bb303c7b1088f571519cd

    SHA1

    f4f891f477a5b9ce6babb515cea7736f3b570c18

    SHA256

    73f44169a97696ce7701455ff4eb02677ca3eecace96f3597e4eefd3bfe6f240

    SHA512

    0a8cffb39df9d38d391f2035b0829b8aa926a5c536172fa1499d6352a8b07592f333cb5f7eeb1e72bc0817ac175807e38992a1982dbcc70cb222f4b6c22a5b69

  • memory/1952-132-0x0000000000400000-0x0000000000590000-memory.dmp

    Filesize

    1.6MB

  • memory/3776-143-0x0000000072820000-0x0000000072DD1000-memory.dmp

    Filesize

    5.7MB

  • memory/3776-144-0x0000000072820000-0x0000000072DD1000-memory.dmp

    Filesize

    5.7MB

  • memory/4136-136-0x0000000072820000-0x0000000072DD1000-memory.dmp

    Filesize

    5.7MB

  • memory/4136-140-0x0000000072820000-0x0000000072DD1000-memory.dmp

    Filesize

    5.7MB