Resubmissions

18-11-2020 17:38

201118-q5ksdz5fts 8

18-11-2020 16:27

201118-55lnpg8fkn 8

Analysis

  • max time kernel
    1798s
  • max time network
    1800s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    18-11-2020 16:27

General

  • Target

    api.exe

  • Size

    22.9MB

  • MD5

    3561a1c35184a0b60b89f4b560a9660d

  • SHA1

    e39442388db90a088a8eb8ce46d4f61182334a1b

  • SHA256

    3f1e28e961239c01602b1ce7555f51778c9f369b059ef07b75a7d9dee70ff8b1

  • SHA512

    7a83a669e8a72d6ec83952c9d57cc8059a6fff6f3564dab69ad50ca939a7d8e3f3d7d9ed74f8d06d060a39f8c4525fcfdcdecf2550c6fe57da0bef3df1f5ee75

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Sets service image path in registry 2 TTPs
  • 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.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates connected drives 3 TTPs 25 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • 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.

  • Modifies service 2 TTPs 4 IoCs
  • Drops file in Windows directory 1 IoCs
  • Modifies Control Panel 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Modifies registry class 284 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 8989 IoCs
  • Suspicious use of FindShellTrayWindow 5 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\api.exe
    "C:\Users\Admin\AppData\Local\Temp\api.exe"
    1⤵
    • Drops file in Drivers directory
    • Checks computer location settings
    • Enumerates connected drives
    • Writes to the Master Boot Record (MBR)
    • Modifies service
    • Modifies system certificate store
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious behavior: LoadsDriver
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4764
    • C:\Windows\SysWOW64\LaunchWinApp.exe
      "C:\Windows\system32\LaunchWinApp.exe" "https://adlice.com/thanks-downloading-diag/?utm_campaign=diag&utm_source=soft&utm_medium=btn"
      2⤵
        PID:1600
    • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
      "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
      1⤵
      • Drops file in Windows directory
      • Modifies Control Panel
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:4564
    • C:\Windows\system32\browser_broker.exe
      C:\Windows\system32\browser_broker.exe -Embedding
      1⤵
      • Modifies Internet Explorer settings
      PID:4620
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x3fc
      1⤵
        PID:2436
      • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
        "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
        1⤵
        • Modifies registry class
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1680
      • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
        "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
        1⤵
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:5096
      • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
        "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
        1⤵
        • Modifies registry class
        PID:4924
      • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
        "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
        1⤵
        • Modifies registry class
        PID:1900
      • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
        "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
        1⤵
        • Modifies registry class
        PID:2432
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x404
        1⤵
          PID:804
        • C:\Windows\system32\AUDIODG.EXE
          C:\Windows\system32\AUDIODG.EXE 0x404
          1⤵
            PID:3924

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Persistence

          Registry Run Keys / Startup Folder

          1
          T1060

          Bootkit

          1
          T1067

          Modify Existing Service

          1
          T1031

          Defense Evasion

          Modify Registry

          4
          T1112

          Install Root Certificate

          1
          T1130

          Credential Access

          Credentials in Files

          1
          T1081

          Discovery

          Query Registry

          3
          T1012

          System Information Discovery

          2
          T1082

          Peripheral Device Discovery

          1
          T1120

          Collection

          Data from Local System

          1
          T1005

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/1600-8-0x0000000000000000-mapping.dmp
          • memory/4764-181-0x00000000107A0000-0x00000000107A1000-memory.dmp
            Filesize

            4KB

          • memory/4764-402-0x0000000011870000-0x0000000011871000-memory.dmp
            Filesize

            4KB

          • memory/4764-79-0x0000000007FA0000-0x0000000007FA1000-memory.dmp
            Filesize

            4KB

          • memory/4764-83-0x0000000007FA0000-0x0000000007FA1000-memory.dmp
            Filesize

            4KB

          • memory/4764-107-0x00000000106A0000-0x00000000106A1000-memory.dmp
            Filesize

            4KB

          • memory/4764-110-0x00000000106A0000-0x00000000106A1000-memory.dmp
            Filesize

            4KB

          • memory/4764-111-0x00000000106A0000-0x00000000106A1000-memory.dmp
            Filesize

            4KB

          • memory/4764-143-0x00000000107A0000-0x00000000107A1000-memory.dmp
            Filesize

            4KB

          • memory/4764-153-0x00000000107A0000-0x00000000107A1000-memory.dmp
            Filesize

            4KB

          • memory/4764-159-0x00000000107A0000-0x00000000107A1000-memory.dmp
            Filesize

            4KB

          • memory/4764-411-0x0000000011870000-0x0000000011871000-memory.dmp
            Filesize

            4KB

          • memory/4764-5-0x00000000058E0000-0x00000000058E1000-memory.dmp
            Filesize

            4KB

          • memory/4764-219-0x00000000107A0000-0x00000000107A1000-memory.dmp
            Filesize

            4KB

          • memory/4764-203-0x00000000107A0000-0x00000000107A1000-memory.dmp
            Filesize

            4KB

          • memory/4764-191-0x00000000107A0000-0x00000000107A1000-memory.dmp
            Filesize

            4KB

          • memory/4764-246-0x00000000107A0000-0x00000000107A1000-memory.dmp
            Filesize

            4KB

          • memory/4764-360-0x0000000011850000-0x0000000011851000-memory.dmp
            Filesize

            4KB

          • memory/4764-361-0x0000000011850000-0x0000000011851000-memory.dmp
            Filesize

            4KB

          • memory/4764-378-0x0000000011870000-0x0000000011871000-memory.dmp
            Filesize

            4KB

          • memory/4764-379-0x0000000011870000-0x0000000011871000-memory.dmp
            Filesize

            4KB

          • memory/4764-401-0x0000000011870000-0x0000000011871000-memory.dmp
            Filesize

            4KB

          • memory/4764-1-0x00000000056E0000-0x00000000056E1000-memory.dmp
            Filesize

            4KB

          • memory/4764-410-0x0000000011870000-0x0000000011871000-memory.dmp
            Filesize

            4KB

          • memory/4764-169-0x00000000107A0000-0x00000000107A1000-memory.dmp
            Filesize

            4KB