Analysis

  • max time kernel
    148s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-11-2022 10:00

General

  • Target

    40c2579850d73677938dbf0db7775789bc1018cf0fae47ea2de6633fb35efd2c.exe

  • Size

    618KB

  • MD5

    7d0051408a4d4455fac0a9e81ff8917b

  • SHA1

    50d6aa7d3ead6c57f9d40537e3ba2e597b0bbd80

  • SHA256

    40c2579850d73677938dbf0db7775789bc1018cf0fae47ea2de6633fb35efd2c

  • SHA512

    9e94eb6a8833bf3b59443ced17b58515cfee2665fd4007f9483dd4eba1be761468c8547f455be8a4e03cceae6104a6484cd6b2d4e46be3634a22f2f492158ec7

  • SSDEEP

    12288:yKfC2/WC5btCQFxZITbejP27e73Rrx8FkWIGoC3tXkg/DKWO4g8CXdpYiY+1:K2/W0NDZ/b6uumGpdXkg/DKWOj8C8iYO

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\40c2579850d73677938dbf0db7775789bc1018cf0fae47ea2de6633fb35efd2c.exe
    "C:\Users\Admin\AppData\Local\Temp\40c2579850d73677938dbf0db7775789bc1018cf0fae47ea2de6633fb35efd2c.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:1512
    • C:\Users\Admin\AppData\Local\Temp\n865\s875.exe
      "C:\Users\Admin\AppData\Local\Temp\n865\s875.exe" f19c1bfe85ccaf6873f57121mWO3siQ/g4o1wj8KigmixaT0rSXt7JEhZEopihlFNihqaa6BKQLnOR8ZGwWDoYHZ3B5dbETAegSS6vmp74nqUQUnPhfh0yVtkOiMSUtM01R+B9K+hWq8t5wOJwlJ6Yz2gAFjr9565jCAjk7mODTRELiKUCdwZPF1zH+jLbs= /v "C:\Users\Admin\AppData\Local\Temp\40c2579850d73677938dbf0db7775789bc1018cf0fae47ea2de6633fb35efd2c.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:1668

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\n865\s875.exe

    Filesize

    350KB

    MD5

    54394ba7de5b2c5e3df92557ea95f014

    SHA1

    47a99735e089139495643c9027effcb6b1fc5504

    SHA256

    339f7dd54a1e07bfcabb5749047ef4ab615462213f5baaa62fb690c894bef1eb

    SHA512

    45928ffec4f1bf9a86469bb54f83ba6fdcd275ef9826bd923e890fce83d7a8f975c309bda4849d3f2d066ea458f23fa8e6aefe26be5e874249712462ecd69660

  • C:\Users\Admin\AppData\Local\Temp\n865\s875.exe

    Filesize

    350KB

    MD5

    54394ba7de5b2c5e3df92557ea95f014

    SHA1

    47a99735e089139495643c9027effcb6b1fc5504

    SHA256

    339f7dd54a1e07bfcabb5749047ef4ab615462213f5baaa62fb690c894bef1eb

    SHA512

    45928ffec4f1bf9a86469bb54f83ba6fdcd275ef9826bd923e890fce83d7a8f975c309bda4849d3f2d066ea458f23fa8e6aefe26be5e874249712462ecd69660

  • memory/1668-135-0x00007FF812DB0000-0x00007FF8137E6000-memory.dmp

    Filesize

    10.2MB

  • memory/1668-136-0x0000000000A2A000-0x0000000000A2F000-memory.dmp

    Filesize

    20KB

  • memory/1668-137-0x0000000000A2A000-0x0000000000A2F000-memory.dmp

    Filesize

    20KB

  • memory/1668-138-0x0000000000A2A000-0x0000000000A2F000-memory.dmp

    Filesize

    20KB