Analysis

  • max time kernel
    144s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220331-en
  • submitted
    05/04/2022, 16:07

General

  • Target
    be27c2351c45b75a4226338bf92a8ff9.exe
  • Size 1.4MB
  • Sample220405-tkl7dadbaq
  • SHA256 f44ea5109b380e8bdedc44930b4a7b43df8a5e5c4fb9bb81163e44097c7a78d3
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 12 IoCs
  • Process spawned unexpected child process 48 IoCs

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

  • suricata: ET MALWARE DCRAT Activity (GET)

    suricata: ET MALWARE DCRAT Activity (GET)

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 12 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Program Files directory 10 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 48 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\be27c2351c45b75a4226338bf92a8ff9.exe
    "C:\Users\Admin\AppData\Local\Temp\be27c2351c45b75a4226338bf92a8ff9.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:380
    • C:\odt\smss.exe
      "C:\odt\smss.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:4968
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "ssALRuntimeBroker" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:5056
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "I4hCRuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4788
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wlUiRuntimeBroker" /sc ONSTART /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4832
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2180
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "JOO0SppExtComObj" /sc MINUTE /mo 11 /tr "'C:\odt\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2256
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "jwg8SppExtComObj" /sc ONLOGON /tr "'C:\odt\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4548
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "3RfoSppExtComObj" /sc ONSTART /tr "'C:\odt\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2152
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObj" /sc MINUTE /mo 12 /tr "'C:\odt\SppExtComObj.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1104
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Hcp3smss" /sc MINUTE /mo 10 /tr "'C:\odt\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4076
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "FG3ssmss" /sc ONLOGON /tr "'C:\odt\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3132
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Ko0lsmss" /sc ONSTART /tr "'C:\odt\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2288
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smss" /sc MINUTE /mo 7 /tr "'C:\odt\smss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3116
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "4kJGRegistry" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\SoftwareDistribution\Registry.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3204
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "E2DVRegistry" /sc ONLOGON /tr "'C:\Users\All Users\SoftwareDistribution\Registry.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1008
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "3cSnRegistry" /sc ONSTART /tr "'C:\Users\All Users\SoftwareDistribution\Registry.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3860
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Registry" /sc MINUTE /mo 8 /tr "'C:\Users\All Users\SoftwareDistribution\Registry.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1972
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "gPVxspoolsv" /sc MINUTE /mo 8 /tr "'C:\Program Files\VideoLAN\VLC\skins\fonts\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4784
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "9n9Fspoolsv" /sc ONLOGON /tr "'C:\Program Files\VideoLAN\VLC\skins\fonts\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2032
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SRXtspoolsv" /sc ONSTART /tr "'C:\Program Files\VideoLAN\VLC\skins\fonts\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4452
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsv" /sc MINUTE /mo 5 /tr "'C:\Program Files\VideoLAN\VLC\skins\fonts\spoolsv.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1648
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "xxC7dwm" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Windows NT\Accessories\en-US\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1520
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "zlmSdwm" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\Accessories\en-US\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1508
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "D8jxdwm" /sc ONSTART /tr "'C:\Program Files (x86)\Windows NT\Accessories\en-US\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4836
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows NT\Accessories\en-US\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4744
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "ViLXRuntimeBroker" /sc MINUTE /mo 10 /tr "'C:\Windows\Web\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4300
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "k4YmRuntimeBroker" /sc ONLOGON /tr "'C:\Windows\Web\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4288
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cobTRuntimeBroker" /sc ONSTART /tr "'C:\Windows\Web\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4516
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc MINUTE /mo 8 /tr "'C:\Windows\Web\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4536
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "uDfbStartMenuExperienceHost" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4500
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "5BVVStartMenuExperienceHost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:884
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "GsvuStartMenuExperienceHost" /sc ONSTART /tr "'C:\Recovery\WindowsRE\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4124
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHost" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\StartMenuExperienceHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4412
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "ByFAbackgroundTaskHost" /sc MINUTE /mo 11 /tr "'C:\Users\Default User\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4800
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "aEMvbackgroundTaskHost" /sc ONLOGON /tr "'C:\Users\Default User\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3428
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "mXoHbackgroundTaskHost" /sc ONSTART /tr "'C:\Users\Default User\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4916
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHost" /sc MINUTE /mo 9 /tr "'C:\Users\Default User\backgroundTaskHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4028
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "rJN0WmiPrvSE" /sc MINUTE /mo 11 /tr "'C:\odt\WmiPrvSE.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4012
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "vK4OWmiPrvSE" /sc ONLOGON /tr "'C:\odt\WmiPrvSE.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:212
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "ySZuWmiPrvSE" /sc ONSTART /tr "'C:\odt\WmiPrvSE.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2316
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WmiPrvSE" /sc MINUTE /mo 14 /tr "'C:\odt\WmiPrvSE.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:500
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "q9YkSystem" /sc MINUTE /mo 10 /tr "'C:\Users\Default\Application Data\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3688
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Re0BSystem" /sc ONLOGON /tr "'C:\Users\Default\Application Data\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1868
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IKhFSystem" /sc ONSTART /tr "'C:\Users\Default\Application Data\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1844
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "System" /sc MINUTE /mo 11 /tr "'C:\Users\Default\Application Data\System.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4048
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "bBp9winlogon" /sc MINUTE /mo 6 /tr "'C:\ProgramData\Package Cache\{BF08E976-B92E-4336-B56F-2171179476C4}v14.30.30704\packages\vcRuntimeAdditional_x86\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1780
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "7Yoawinlogon" /sc ONLOGON /tr "'C:\ProgramData\Package Cache\{BF08E976-B92E-4336-B56F-2171179476C4}v14.30.30704\packages\vcRuntimeAdditional_x86\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3500
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "2QYEwinlogon" /sc ONSTART /tr "'C:\ProgramData\Package Cache\{BF08E976-B92E-4336-B56F-2171179476C4}v14.30.30704\packages\vcRuntimeAdditional_x86\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2284
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogon" /sc MINUTE /mo 9 /tr "'C:\ProgramData\Package Cache\{BF08E976-B92E-4336-B56F-2171179476C4}v14.30.30704\packages\vcRuntimeAdditional_x86\winlogon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1996

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        smss.exe

        • Path C:\odt\smss.exe
        • Size 1.4MB
        • SHA256 803197da2fd4e3796b88d5eadd462c9d8378df7a2aab08d705f27e17ff01ffba
        • MD5 SHA1 SHA512 SSDEEP

        smss.exe

        • Path C:\odt\smss.exe
        • Size 1.4MB
        • SHA256 803197da2fd4e3796b88d5eadd462c9d8378df7a2aab08d705f27e17ff01ffba
        • MD5 SHA1 SHA512 SSDEEP

        memory/380-124-0x0000000000490000-0x0000000000600000-memory.dmp

        memory/380-125-0x000000001B220000-0x000000001B270000-memory.dmp

        memory/380-126-0x00007FF8615C0000-0x00007FF862081000-memory.dmp

        memory/380-127-0x00000000026E0000-0x00000000026E2000-memory.dmp

        memory/4968-131-0x00000000007E0000-0x0000000000950000-memory.dmp

        memory/4968-132-0x00007FF8615C0000-0x00007FF862081000-memory.dmp

        memory/4968-133-0x000000001EFB0000-0x000000001F172000-memory.dmp