Analysis

  • max time kernel
    64s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    05/05/2022, 10:47

General

  • Target
    a958bca004dcc7edf8310150ef02512b.exe
  • Size 2.1MB
  • Sample220505-mvhtdaaefm
  • SHA256 a3f1615bd60b684da869e6b08295b273bd7698f63aa24ffb86d2ce24e03496bf
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 33 IoCs

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

  • Disables Task Manager via registry modification
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops file in Program Files directory 5 IoCs
  • Drops file in Windows directory 9 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 33 IoCs

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

  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 17 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a958bca004dcc7edf8310150ef02512b.exe
    "C:\Users\Admin\AppData\Local\Temp\a958bca004dcc7edf8310150ef02512b.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1680
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\SessionruntimebrokerCommon\zhIp2XW1emn5KJ.vbe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1440
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\SessionruntimebrokerCommon\cEwrYP.bat" "
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1708
        • C:\SessionruntimebrokerCommon\msportBrowser.exe
          "C:\SessionruntimebrokerCommon\msportBrowser.exe"
          4⤵
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1216
          • C:\Users\Admin\sppsvc.exe
            "C:\Users\Admin\sppsvc.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2056
        • C:\Windows\SysWOW64\reg.exe
          reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
          4⤵
          • Modifies registry key
          PID:2120
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "servicess" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Linguistics\LanguageNames2\services.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1376
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Linguistics\LanguageNames2\services.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1176
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "servicess" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Linguistics\LanguageNames2\services.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1528
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Windows Portable Devices\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:360
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Portable Devices\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:876
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Portable Devices\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:872
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 9 /tr "'C:\Windows\Branding\ShellBrd\WmiPrvSE.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:316
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Windows\Branding\ShellBrd\WmiPrvSE.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:668
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 6 /tr "'C:\Windows\Branding\ShellBrd\WmiPrvSE.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:772
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Windows\Cursors\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1900
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\Cursors\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:288
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\Windows\Cursors\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1336
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\sppsvc.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1228
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Users\Admin\sppsvc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1088
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\sppsvc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:964
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 9 /tr "'C:\SessionruntimebrokerCommon\taskhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:972
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\SessionruntimebrokerCommon\taskhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1616
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 13 /tr "'C:\SessionruntimebrokerCommon\taskhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1712
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WMIADAPW" /sc MINUTE /mo 10 /tr "'C:\Windows\Fonts\WMIADAP.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1720
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WMIADAP" /sc ONLOGON /tr "'C:\Windows\Fonts\WMIADAP.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2020
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WMIADAPW" /sc MINUTE /mo 7 /tr "'C:\Windows\Fonts\WMIADAP.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1016
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Users\Default User\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1380
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\Default User\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1892
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Users\Default User\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1660
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 13 /tr "'C:\SessionruntimebrokerCommon\System.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1760
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\SessionruntimebrokerCommon\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1316
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 12 /tr "'C:\SessionruntimebrokerCommon\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1620
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Windows\PolicyDefinitions\ja-JP\smss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1448
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\PolicyDefinitions\ja-JP\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1756
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\Windows\PolicyDefinitions\ja-JP\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1528
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsml" /sc MINUTE /mo 5 /tr "'C:\Recovery\4e1be222-bc70-11ec-afb1-f2122c6314cc\lsm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1772
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Recovery\4e1be222-bc70-11ec-afb1-f2122c6314cc\lsm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1972
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsml" /sc MINUTE /mo 9 /tr "'C:\Recovery\4e1be222-bc70-11ec-afb1-f2122c6314cc\lsm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1664

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        cEwrYP.bat

        • Path C:\SessionruntimebrokerCommon\cEwrYP.bat
        • Size 161B
        • SHA256 6c081456763b96a26b21443ea6987ea1b143bb47b17f3a2b6bec9ca27f3931a6
        • MD5 SHA1 SHA512

        msportBrowser.exe

        • Path C:\SessionruntimebrokerCommon\msportBrowser.exe
        • Size 1.7MB
        • SHA256 9da1c8ead1bf1e76bc8ea2267eae81f44c3ce33e6d1e2b8201fbf1af187a17cc
        • MD5 SHA1 SHA512 SSDEEP

        msportBrowser.exe

        • Path C:\SessionruntimebrokerCommon\msportBrowser.exe
        • Size 1.7MB
        • SHA256 9da1c8ead1bf1e76bc8ea2267eae81f44c3ce33e6d1e2b8201fbf1af187a17cc
        • MD5 SHA1 SHA512 SSDEEP

        zhIp2XW1emn5KJ.vbe

        • Path C:\SessionruntimebrokerCommon\zhIp2XW1emn5KJ.vbe
        • Size 206B
        • SHA256 7c02f23c879d3b2073f68ea42946d7a604ffeabd4cf71b7d7f66c8b71aa99663
        • MD5 SHA1 SHA512

        sppsvc.exe

        • Path C:\Users\Admin\sppsvc.exe
        • Size 1.7MB
        • SHA256 9da1c8ead1bf1e76bc8ea2267eae81f44c3ce33e6d1e2b8201fbf1af187a17cc
        • MD5 SHA1 SHA512 SSDEEP

        sppsvc.exe

        • Path C:\Users\Admin\sppsvc.exe
        • Size 1.7MB
        • SHA256 9da1c8ead1bf1e76bc8ea2267eae81f44c3ce33e6d1e2b8201fbf1af187a17cc
        • MD5 SHA1 SHA512 SSDEEP

        msportBrowser.exe

        • Path \SessionruntimebrokerCommon\msportBrowser.exe
        • Size 1.7MB
        • SHA256 9da1c8ead1bf1e76bc8ea2267eae81f44c3ce33e6d1e2b8201fbf1af187a17cc
        • MD5 SHA1 SHA512 SSDEEP

        msportBrowser.exe

        • Path \SessionruntimebrokerCommon\msportBrowser.exe
        • Size 1.7MB
        • SHA256 9da1c8ead1bf1e76bc8ea2267eae81f44c3ce33e6d1e2b8201fbf1af187a17cc
        • MD5 SHA1 SHA512 SSDEEP

        memory/1216-65-0x0000000001010000-0x00000000011D2000-memory.dmp

        memory/1216-70-0x0000000000510000-0x000000000051E000-memory.dmp

        memory/1216-66-0x00000000004E0000-0x00000000004FC000-memory.dmp

        memory/1216-67-0x0000000000250000-0x0000000000260000-memory.dmp

        memory/1216-68-0x0000000000A20000-0x0000000000A76000-memory.dmp

        memory/1216-69-0x0000000000500000-0x0000000000512000-memory.dmp

        memory/1680-54-0x00000000752B1000-0x00000000752B3000-memory.dmp

        memory/2056-74-0x0000000001210000-0x00000000013D2000-memory.dmp

        memory/2056-76-0x0000000000590000-0x00000000005E6000-memory.dmp

        memory/2056-77-0x00000000005E0000-0x00000000005F2000-memory.dmp