Analysis

  • user interaction
    yes
  • max time kernel
    19s
  • max time network
    17s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    27/08/2026, 16:17

Errors

Reason
Machine shutdown

General

  • Target
    b77f680bf36519600963372d5a6bc7883c26ba3ba17669083b2123c534a6489b.exe
  • Size 406KB
  • Sample260827-trnc1swzhy
  • SHA256 b77f680bf36519600963372d5a6bc7883c26ba3ba17669083b2123c534a6489b
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 12 IoCs
  • Executes a command shell one-liner 1 TTPs 50 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b77f680bf36519600963372d5a6bc7883c26ba3ba17669083b2123c534a6489b.exe
    "C:\Users\Admin\AppData\Local\Temp\b77f680bf36519600963372d5a6bc7883c26ba3ba17669083b2123c534a6489b.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Writes to the Master Boot Record (MBR)
    • Drops file in System32 directory
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3184
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c p
      2⤵
      • Executes a command shell one-liner
      PID:4132
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c p
      2⤵
      • Executes a command shell one-liner
      PID:368
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c p
      2⤵
      • Executes a command shell one-liner
      PID:1384
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c p
      2⤵
      • Executes a command shell one-liner
      PID:5704
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c p
      2⤵
      • Executes a command shell one-liner
      PID:5048
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c p
      2⤵
      • Executes a command shell one-liner
      PID:4848
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c w
      2⤵
      • Executes a command shell one-liner
      PID:6004
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c A
      2⤵
      • Executes a command shell one-liner
      PID:4136
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c f
      2⤵
      • Executes a command shell one-liner
      PID:4992
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c H
      2⤵
      • Executes a command shell one-liner
      PID:4072
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c p
      2⤵
      • Executes a command shell one-liner
      PID:3704
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c s
      2⤵
      • Executes a command shell one-liner
      PID:4088
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c s
      2⤵
      • Executes a command shell one-liner
      PID:5328
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c r
      2⤵
      • Executes a command shell one-liner
      PID:5324
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c r
      2⤵
      • Executes a command shell one-liner
      PID:4916
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c p
      2⤵
      • Executes a command shell one-liner
      PID:6140
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:3452
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:3468
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:4084
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:3668
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:5912
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:5668
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:5072
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:5588
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:5584
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:3408
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:3500
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:5300
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:1316
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c a
      2⤵
      • Executes a command shell one-liner
      PID:3464
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c a
      2⤵
      • Executes a command shell one-liner
      PID:4528
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c a
      2⤵
      • Executes a command shell one-liner
      PID:6052
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c d
      2⤵
      • Executes a command shell one-liner
      PID:1712
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c d
      2⤵
      • Executes a command shell one-liner
      PID:1488
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c d
      2⤵
      • Executes a command shell one-liner
      PID:3812
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c d
      2⤵
      • Executes a command shell one-liner
      PID:5788
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:2672
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:3748
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:380
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:6108
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c b
      2⤵
      • Executes a command shell one-liner
      PID:808
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c r
      2⤵
      • Executes a command shell one-liner
      PID:4392
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c r
      2⤵
      • Executes a command shell one-liner
      PID:2524
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c r
      2⤵
      • Executes a command shell one-liner
      PID:4996
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c d
      2⤵
      • Executes a command shell one-liner
      PID:4064
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c d
      2⤵
      • Executes a command shell one-liner
      PID:1792
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c d
      2⤵
      • Executes a command shell one-liner
      PID:1968
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c d
      2⤵
      • Executes a command shell one-liner
      PID:5172
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c d
      2⤵
      • Executes a command shell one-liner
      PID:2532
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c v
      2⤵
      • Executes a command shell one-liner
      PID:1760
  • C:\Windows\System32\Upfc.exe
    C:\Windows\System32\Upfc.exe /launchtype periodic /cv 4k1degRCLk6Ilzs7zDHrSw.0
    1⤵
      PID:4972

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          memory/3184-0-0x00007FF653560000-0x00007FF6535BE000-memory.dmp

          memory/3184-21-0x00007FFB39100000-0x00007FFB3910C000-memory.dmp

          memory/3184-18-0x00007FFB39110000-0x00007FFB39128000-memory.dmp

          memory/3184-17-0x00007FFB3B110000-0x00007FFB3B140000-memory.dmp

          memory/3184-10-0x00007FFB39BA0000-0x00007FFB39BC2000-memory.dmp

          memory/3184-9-0x00007FFB3A4D0000-0x00007FFB3A4FB000-memory.dmp