Analysis

  • max time kernel
    176s
  • max time network
    193s
  • 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, 09:47

General

  • Target
    e07d83d199bc49f6dfcd6861f3ac72108db4e332d759c29a5c3bc9f941a77e7d.exe
  • Size 621KB
  • Sample221127-lsgb4acb3y
  • SHA256 e07d83d199bc49f6dfcd6861f3ac72108db4e332d759c29a5c3bc9f941a77e7d
  • MD5 SHA1 SHA512 SSDEEP
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\e07d83d199bc49f6dfcd6861f3ac72108db4e332d759c29a5c3bc9f941a77e7d.exe
    "C:\Users\Admin\AppData\Local\Temp\e07d83d199bc49f6dfcd6861f3ac72108db4e332d759c29a5c3bc9f941a77e7d.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:4280
    • C:\Users\Admin\AppData\Local\Temp\n4643\s4643.exe
      "C:\Users\Admin\AppData\Local\Temp\n4643\s4643.exe" 1c03afded608af0376a8f156edNoW/2LhnLVS6ksrQUYvFwjsMbOVHHtYOYsg3S9ZMZ/u2jhxSr4EKt1GrqMikssXxWXOiNi4QHKD9GErHsf3rTU7xWdK5C3PsULUryc+A2aNz+fYvkcPU/Oe9B5c7MEie7nPRSG00iMeR+asAkJYVQA4rrkgbc9z4nM1Uc= /v "C:\Users\Admin\AppData\Local\Temp\e07d83d199bc49f6dfcd6861f3ac72108db4e332d759c29a5c3bc9f941a77e7d.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:988

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        s4643.exe

        • Path C:\Users\Admin\AppData\Local\Temp\n4643\s4643.exe
        • Size 350KB
        • SHA256 339f7dd54a1e07bfcabb5749047ef4ab615462213f5baaa62fb690c894bef1eb
        • MD5 SHA1 SHA512 SSDEEP

        s4643.exe

        • Path C:\Users\Admin\AppData\Local\Temp\n4643\s4643.exe
        • Size 350KB
        • SHA256 339f7dd54a1e07bfcabb5749047ef4ab615462213f5baaa62fb690c894bef1eb
        • MD5 SHA1 SHA512 SSDEEP

        memory/988-135-0x00007FFC98FF0000-0x00007FFC99A26000-memory.dmp

        memory/988-136-0x000000000138A000-0x000000000138F000-memory.dmp

        memory/988-137-0x000000000138A000-0x000000000138F000-memory.dmp

        memory/988-138-0x000000000138A000-0x000000000138F000-memory.dmp