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Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/01/2023, 15:38

General

  • Target

    0f630e483e9761ca666822688dc27620440238874a1311281a6a0b69e1c2b05c.exe

  • Size

    367KB

  • MD5

    c1e4a1c0fc7a3a8067aea03428fb410d

  • SHA1

    33052d4c606a7c2a1da7a1b0dee00dc84501ccc0

  • SHA256

    0f630e483e9761ca666822688dc27620440238874a1311281a6a0b69e1c2b05c

  • SHA512

    f50a228b711716a3c1ba459a487bf5986831edf2c91539b794dbdf0c3479fcb4615510fd01a411b32ccf41c7fab5990f1f2ee1a363166a4ff6876b4c6086d9d1

  • SSDEEP

    3072:PFhXncvdLriKZzcy5uLs9ypva0nAOjR3PJ6y3p0Gtzo8jdA4upFldiLLkVuYjTiL:TmLrhzQwUy0AOF0GtzooxupmLgxjT

Malware Config

Signatures

  • Detects Smokeloader packer 1 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Blocklisted process makes network request 3 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 4 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Checks processor information in registry 2 TTPs 26 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies registry class 30 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of FindShellTrayWindow 10 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0f630e483e9761ca666822688dc27620440238874a1311281a6a0b69e1c2b05c.exe
    "C:\Users\Admin\AppData\Local\Temp\0f630e483e9761ca666822688dc27620440238874a1311281a6a0b69e1c2b05c.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:2412
  • C:\Users\Admin\AppData\Local\Temp\F5DE.exe
    C:\Users\Admin\AppData\Local\Temp\F5DE.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4500
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Oatedoqeryee.tmp",Yqiowyrat
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Accesses Microsoft Outlook accounts
      • Accesses Microsoft Outlook profiles
      • Suspicious use of SetThreadContext
      • Checks processor information in registry
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:2900
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 30937
        3⤵
        • Modifies registry class
        • Suspicious use of FindShellTrayWindow
        PID:4552
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /End /tn \Microsoft\Windows\Wininet\CacheTask
        3⤵
          PID:3660
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask
          3⤵
            PID:2956
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4500 -s 532
          2⤵
          • Program crash
          PID:4748
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4500 -ip 4500
        1⤵
          PID:2644
        • C:\Users\Admin\AppData\Local\Temp\4E5F.exe
          C:\Users\Admin\AppData\Local\Temp\4E5F.exe
          1⤵
          • Executes dropped EXE
          PID:4180
        • C:\Windows\System32\rundll32.exe
          C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
          1⤵
            PID:4368
          • C:\Users\Admin\AppData\Roaming\wbcbiau
            C:\Users\Admin\AppData\Roaming\wbcbiau
            1⤵
            • Executes dropped EXE
            • Checks SCSI registry key(s)
            • Suspicious behavior: MapViewOfSection
            PID:1220

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\4E5F.exe

            Filesize

            382KB

            MD5

            399a2bfd384720ec3723d54a18df023c

            SHA1

            d6b377174e3de30bfeb31a0722889fd57479232a

            SHA256

            982c702ecac5a029dedfe7d564913db598caf3e090d492b71478f48299088980

            SHA512

            fde1d36e410bb18f7e9af9a6850c8f33b8995203e623d486d003b86e38c0c4ca6b87736d507ed0d13a9331e12164a11987ade3a380722a1c984a99720c885eb2

          • C:\Users\Admin\AppData\Local\Temp\4E5F.exe

            Filesize

            382KB

            MD5

            399a2bfd384720ec3723d54a18df023c

            SHA1

            d6b377174e3de30bfeb31a0722889fd57479232a

            SHA256

            982c702ecac5a029dedfe7d564913db598caf3e090d492b71478f48299088980

            SHA512

            fde1d36e410bb18f7e9af9a6850c8f33b8995203e623d486d003b86e38c0c4ca6b87736d507ed0d13a9331e12164a11987ade3a380722a1c984a99720c885eb2

          • C:\Users\Admin\AppData\Local\Temp\F5DE.exe

            Filesize

            1.1MB

            MD5

            97f178e9c983222907bdf48d8ead895f

            SHA1

            676da810309730830bc8f60771f7d3b7c945bb0a

            SHA256

            4489c198673cf7452dc2c0e06a571c527ce5a7eaa1ea19b49cbf405df3555b9c

            SHA512

            1910d163784248ef97e2bd84ab78266da375fd1ca994d6460d03b8af9b6c1de73bd4820a3aa3b5868537fa253e7bba753d00f0db4aa1e3cdc7a845e2a77706c1

          • C:\Users\Admin\AppData\Local\Temp\F5DE.exe

            Filesize

            1.1MB

            MD5

            97f178e9c983222907bdf48d8ead895f

            SHA1

            676da810309730830bc8f60771f7d3b7c945bb0a

            SHA256

            4489c198673cf7452dc2c0e06a571c527ce5a7eaa1ea19b49cbf405df3555b9c

            SHA512

            1910d163784248ef97e2bd84ab78266da375fd1ca994d6460d03b8af9b6c1de73bd4820a3aa3b5868537fa253e7bba753d00f0db4aa1e3cdc7a845e2a77706c1

          • C:\Users\Admin\AppData\Local\Temp\Oatedoqeryee.tmp

            Filesize

            718KB

            MD5

            86df455f98f9b6b06535d64a9cfd7006

            SHA1

            6d79d6464ce3eeb70de564652f9b99b09c5d3a22

            SHA256

            200911b8faaea3104d1b51231d534e615fe755dc84024c1029aeafe1f842206b

            SHA512

            249dac192d6c8023d4673a52d36cc4beecb899ab394f26e6812b3304075f427baba8b4b6a0cf4f6d4f50710eea8a0338d268b82a97a32632e18597c8eae1c426

          • C:\Users\Admin\AppData\Local\Temp\Oatedoqeryee.tmp

            Filesize

            718KB

            MD5

            86df455f98f9b6b06535d64a9cfd7006

            SHA1

            6d79d6464ce3eeb70de564652f9b99b09c5d3a22

            SHA256

            200911b8faaea3104d1b51231d534e615fe755dc84024c1029aeafe1f842206b

            SHA512

            249dac192d6c8023d4673a52d36cc4beecb899ab394f26e6812b3304075f427baba8b4b6a0cf4f6d4f50710eea8a0338d268b82a97a32632e18597c8eae1c426

          • C:\Users\Admin\AppData\Roaming\wbcbiau

            Filesize

            367KB

            MD5

            c1e4a1c0fc7a3a8067aea03428fb410d

            SHA1

            33052d4c606a7c2a1da7a1b0dee00dc84501ccc0

            SHA256

            0f630e483e9761ca666822688dc27620440238874a1311281a6a0b69e1c2b05c

            SHA512

            f50a228b711716a3c1ba459a487bf5986831edf2c91539b794dbdf0c3479fcb4615510fd01a411b32ccf41c7fab5990f1f2ee1a363166a4ff6876b4c6086d9d1

          • C:\Users\Admin\AppData\Roaming\wbcbiau

            Filesize

            367KB

            MD5

            c1e4a1c0fc7a3a8067aea03428fb410d

            SHA1

            33052d4c606a7c2a1da7a1b0dee00dc84501ccc0

            SHA256

            0f630e483e9761ca666822688dc27620440238874a1311281a6a0b69e1c2b05c

            SHA512

            f50a228b711716a3c1ba459a487bf5986831edf2c91539b794dbdf0c3479fcb4615510fd01a411b32ccf41c7fab5990f1f2ee1a363166a4ff6876b4c6086d9d1

          • memory/1220-172-0x0000000000400000-0x0000000002C4E000-memory.dmp

            Filesize

            40.3MB

          • memory/1220-171-0x0000000000400000-0x0000000002C4E000-memory.dmp

            Filesize

            40.3MB

          • memory/1220-170-0x0000000002DBD000-0x0000000002DD3000-memory.dmp

            Filesize

            88KB

          • memory/2412-135-0x0000000000400000-0x0000000002C4E000-memory.dmp

            Filesize

            40.3MB

          • memory/2412-134-0x0000000000400000-0x0000000002C4E000-memory.dmp

            Filesize

            40.3MB

          • memory/2412-132-0x0000000002EED000-0x0000000002F03000-memory.dmp

            Filesize

            88KB

          • memory/2412-133-0x0000000002EA0000-0x0000000002EA9000-memory.dmp

            Filesize

            36KB

          • memory/2900-148-0x0000000005140000-0x0000000005280000-memory.dmp

            Filesize

            1.2MB

          • memory/2900-157-0x0000000005140000-0x0000000005280000-memory.dmp

            Filesize

            1.2MB

          • memory/2900-166-0x0000000004430000-0x0000000004F50000-memory.dmp

            Filesize

            11.1MB

          • memory/2900-147-0x0000000005140000-0x0000000005280000-memory.dmp

            Filesize

            1.2MB

          • memory/2900-146-0x0000000004430000-0x0000000004F50000-memory.dmp

            Filesize

            11.1MB

          • memory/2900-145-0x0000000004430000-0x0000000004F50000-memory.dmp

            Filesize

            11.1MB

          • memory/2900-154-0x0000000006820000-0x0000000006960000-memory.dmp

            Filesize

            1.2MB

          • memory/2900-155-0x0000000006820000-0x0000000006960000-memory.dmp

            Filesize

            1.2MB

          • memory/2900-156-0x0000000005140000-0x0000000005280000-memory.dmp

            Filesize

            1.2MB

          • memory/4180-153-0x0000000002DB0000-0x0000000002DD9000-memory.dmp

            Filesize

            164KB

          • memory/4180-152-0x0000000002E5D000-0x0000000002E76000-memory.dmp

            Filesize

            100KB

          • memory/4180-161-0x0000000000400000-0x0000000002C52000-memory.dmp

            Filesize

            40.3MB

          • memory/4180-165-0x0000000000400000-0x0000000002C52000-memory.dmp

            Filesize

            40.3MB

          • memory/4500-142-0x00000000049DC000-0x0000000004AAB000-memory.dmp

            Filesize

            828KB

          • memory/4500-144-0x0000000000400000-0x0000000002D07000-memory.dmp

            Filesize

            41.0MB

          • memory/4500-143-0x0000000004BC0000-0x0000000004CCC000-memory.dmp

            Filesize

            1.0MB

          • memory/4552-163-0x0000000000D40000-0x0000000000FDD000-memory.dmp

            Filesize

            2.6MB

          • memory/4552-162-0x000001CDCE050000-0x000001CDCE2FE000-memory.dmp

            Filesize

            2.7MB

          • memory/4552-160-0x000001CDCFAA0000-0x000001CDCFBE0000-memory.dmp

            Filesize

            1.2MB

          • memory/4552-159-0x000001CDCFAA0000-0x000001CDCFBE0000-memory.dmp

            Filesize

            1.2MB