Analysis

  • max time kernel
    151s
  • 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
    28-11-2022 08:02

General

  • Target

    4bf9df60462ca3fc5f6b1aa6660f7e9af5991ad659779fd34daf748a46b9388f.exe

  • Size

    512KB

  • MD5

    dfbe0f4345f36ae0d3c156dcbaf56d7d

  • SHA1

    c7e95c5b45f6909de1d131f9f3c7e8ffdc9ec69b

  • SHA256

    4bf9df60462ca3fc5f6b1aa6660f7e9af5991ad659779fd34daf748a46b9388f

  • SHA512

    c13897223dda171c473ae7b760a74ff82fceff930fc06fae3885af122eb4d00faaaaef6b7e88a450d51556cb9ec4685b8dc5d158753c992fbe3e43a36a923c1a

  • SSDEEP

    12288:0+h9St2Ma70zIIc91Dwws4zruXic2O/3E4t:0+h9OY70z+warul3E4t

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\4bf9df60462ca3fc5f6b1aa6660f7e9af5991ad659779fd34daf748a46b9388f.exe
    "C:\Users\Admin\AppData\Local\Temp\4bf9df60462ca3fc5f6b1aa6660f7e9af5991ad659779fd34daf748a46b9388f.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:3436
    • C:\Users\Admin\AppData\Local\Temp\n1149\s1149.exe
      "C:\Users\Admin\AppData\Local\Temp\n1149\s1149.exe" b62293bbdd63938bec961d1bXPDzpnssHqoMWqZ8ddqoZwxQiAxP7p8EFnPpXXzcwLqrOrLLriodoPZ5TJsNN2PbCMrunoyV29CkG7ayd5Xr2u+Yf/Co47vEGgST7CXCGiRHL6AMWtxhuSt9uchhGx/Y8NipI52Lgp4IGnjUmwLS1TCP /v "C:\Users\Admin\AppData\Local\Temp\4bf9df60462ca3fc5f6b1aa6660f7e9af5991ad659779fd34daf748a46b9388f.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:1224

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\n1149\s1149.exe

    Filesize

    230KB

    MD5

    abaf13cb23de482dc944ab5b51ca3aac

    SHA1

    76837356db96dd56b647aba60f1adbbdc7b200fe

    SHA256

    b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

    SHA512

    cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

  • C:\Users\Admin\AppData\Local\Temp\n1149\s1149.exe

    Filesize

    230KB

    MD5

    abaf13cb23de482dc944ab5b51ca3aac

    SHA1

    76837356db96dd56b647aba60f1adbbdc7b200fe

    SHA256

    b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

    SHA512

    cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

  • memory/1224-132-0x0000000000000000-mapping.dmp

  • memory/1224-135-0x00007FFE97F50000-0x00007FFE98986000-memory.dmp

    Filesize

    10.2MB

  • memory/1224-136-0x000000000186A000-0x000000000186F000-memory.dmp

    Filesize

    20KB

  • memory/1224-137-0x000000000186A000-0x000000000186F000-memory.dmp

    Filesize

    20KB