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Analysis

  • max time kernel
    141s
  • max time network
    168s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/11/2022, 11:27

General

  • Target

    4d168a50948d91343d50928412298a67a7b06321213d79795cfb12d07be3e128.exe

  • Size

    625KB

  • MD5

    b7b43484046f6a2e255462764ffa0784

  • SHA1

    749e8c15f8548b08daa7ca29f7465885a80edcd9

  • SHA256

    4d168a50948d91343d50928412298a67a7b06321213d79795cfb12d07be3e128

  • SHA512

    b5e3f06a1e2b1da179da63b765455bd3eb51431ee2052fd40a9c44a154494cd336e87d32a803f9df9819b194d0e7e7f2cc19569b5502eb049d88892cde8d4234

  • SSDEEP

    12288:hg+gjjwmSK3ALgXgxvFDyfD1XBxzHMT0jZOJk7j4epPfArQyX0kZ2GEV4gB4IjYq:CjjwS3UW0NKhXLNjZzTPIrQu0kZCV4g/

Score
9/10

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4d168a50948d91343d50928412298a67a7b06321213d79795cfb12d07be3e128.exe
    "C:\Users\Admin\AppData\Local\Temp\4d168a50948d91343d50928412298a67a7b06321213d79795cfb12d07be3e128.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks computer location settings
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4144
    • C:\Users\Admin\AppData\Local\Temp\n4384\s4384.exe
      "C:\Users\Admin\AppData\Local\Temp\n4384\s4384.exe" 1a7e69f9b2f5bdf4dec7a011QlCjPY5x6XLVHVUrCAk8e2dNv03gHIOyCh8u1vMXG2/UJHXmqAWHFX2guXO8h5zSl46XcZKihbPUzcTC2GkSA8pVkQiJrLNs90913VWuQqPSRVhY/NfeYDE46cmaf1Ynp4pD6SbmDAIA1tDgHm+mNGYu0HYW9F5h5MMc+Q== /v "C:\Users\Admin\AppData\Local\Temp\4d168a50948d91343d50928412298a67a7b06321213d79795cfb12d07be3e128.exe"
      2⤵
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Drops file in Windows directory
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:5032

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\n4384\s4384.exe

    Filesize

    350KB

    MD5

    54394ba7de5b2c5e3df92557ea95f014

    SHA1

    47a99735e089139495643c9027effcb6b1fc5504

    SHA256

    339f7dd54a1e07bfcabb5749047ef4ab615462213f5baaa62fb690c894bef1eb

    SHA512

    45928ffec4f1bf9a86469bb54f83ba6fdcd275ef9826bd923e890fce83d7a8f975c309bda4849d3f2d066ea458f23fa8e6aefe26be5e874249712462ecd69660

  • C:\Users\Admin\AppData\Local\Temp\n4384\s4384.exe

    Filesize

    350KB

    MD5

    54394ba7de5b2c5e3df92557ea95f014

    SHA1

    47a99735e089139495643c9027effcb6b1fc5504

    SHA256

    339f7dd54a1e07bfcabb5749047ef4ab615462213f5baaa62fb690c894bef1eb

    SHA512

    45928ffec4f1bf9a86469bb54f83ba6fdcd275ef9826bd923e890fce83d7a8f975c309bda4849d3f2d066ea458f23fa8e6aefe26be5e874249712462ecd69660

  • memory/5032-135-0x00007FF9D2040000-0x00007FF9D2A76000-memory.dmp

    Filesize

    10.2MB

  • memory/5032-136-0x0000000000B1A000-0x0000000000B1F000-memory.dmp

    Filesize

    20KB

  • memory/5032-137-0x0000000000B1A000-0x0000000000B1F000-memory.dmp

    Filesize

    20KB