Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/12/2023, 17:18

General

  • Target
    fdfb2d693550b116dcee622d470187e8.exe
  • Size 1.4MB
  • Sample231222-vvhsdaefa7
  • SHA256 8b5bc0141355c0b6ed6e40892c3e64500fe13e014cbe6d0623afbb6a2f934286
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect ZGRat V1 4 IoCs
  • Process spawned unexpected child process 14 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • ZGRat

    ZGRat is remote access trojan written in C#.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • VMProtect packed file 4 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Adds Run key to start application 2 TTPs 14 IoCs
  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 14 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\fdfb2d693550b116dcee622d470187e8.exe
    "C:\Users\Admin\AppData\Local\Temp\fdfb2d693550b116dcee622d470187e8.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4848
    • C:\Users\Admin\AppData\Local\Temp\fdfb2d693550b116dcee622d470187e8.exe
      "C:\Users\Admin\AppData\Local\Temp\fdfb2d693550b116dcee622d470187e8.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Drops file in System32 directory
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5028
      • C:\Windows\ModemLogs\csrss.exe
        "C:\Windows\ModemLogs\csrss.exe"
        3⤵
          PID:4904
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:5044
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4648
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\odt\backgroundTaskHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3520
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\System32\perfi009\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3304
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Windows\notepad\sysmon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4900
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartUI\StartMenuExperienceHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4320
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\System32\SmallRoom\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4660
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2664
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\odt\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3312
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Windows\System32\rilproxy\taskhostw.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1828
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\System32\AssignedAccessShellProxy\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4216
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Windows\winhlp32\sysmon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3272
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\ModemLogs\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3908
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\PerfLogs\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:208
    • C:\Windows\System32\sihclient.exe
      C:\Windows\System32\sihclient.exe /cv lMR4Z8FyP0STSbS/ttNCTA.0.2
      1⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4904

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          fdfb2d693550b116dcee622d470187e8.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\fdfb2d693550b116dcee622d470187e8.exe.log
          • Size 1KB
          • SHA256 f9c82a53d2671f346cceed279cd49e96372982e6a06029206f8a23f3d29ac237
          • MD5 SHA1 SHA512

          csrss.exe

          • Path C:\Windows\ModemLogs\csrss.exe
          • Size 92KB
          • SHA256 6a26e51311603dea70e113fb58627c0089a8bffdef1bfacb6ac2c0e167fff5d3
          • MD5 SHA1 SHA512 SSDEEP

          RuntimeBroker.exe

          • Path C:\Windows\System32\perfi009\RuntimeBroker.exe
          • Size 384KB
          • SHA256 404148db98b623dc23ab50cef8e101643c8ff9a853144f9cef3238e306abd231
          • MD5 SHA1 SHA512 SSDEEP

          memory/4848-20-0x00007FFFAAD70000-0x00007FFFAB831000-memory.dmp

          memory/4848-3-0x00000000012D0000-0x00000000012D1000-memory.dmp

          memory/4848-0-0x0000000000880000-0x0000000000B44000-memory.dmp

          memory/4848-2-0x000000001B960000-0x000000001B970000-memory.dmp

          memory/4848-1-0x00007FFFAAD70000-0x00007FFFAB831000-memory.dmp

          memory/4904-47-0x00007FFFAAD70000-0x00007FFFAB831000-memory.dmp

          memory/4904-50-0x000000001BD30000-0x000000001BD3C000-memory.dmp

          memory/4904-49-0x000000001BD10000-0x000000001BD18000-memory.dmp

          memory/4904-52-0x00007FFFAAD70000-0x00007FFFAB831000-memory.dmp

          memory/5028-21-0x00007FFFAAD70000-0x00007FFFAB831000-memory.dmp

          memory/5028-22-0x000000001B1F0000-0x000000001B200000-memory.dmp

          memory/5028-48-0x00007FFFAAD70000-0x00007FFFAB831000-memory.dmp