Analysis

  • max time kernel
    149s
  • 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
    25-12-2022 12:34

General

  • Target

    5ed47a43b8d0d423215bcba69e73511c1169061748076818d62dab3ea8c3f9e3.exe

  • Size

    231KB

  • MD5

    24170fa94eef3bb1dc9ba5e714543ed5

  • SHA1

    de41bbb64f2b0bfcbe474c3e463ff1963d97f42b

  • SHA256

    5ed47a43b8d0d423215bcba69e73511c1169061748076818d62dab3ea8c3f9e3

  • SHA512

    34e380590e3604b3ea1f70f346ecdb6b8214b47816f851e1ce3697e885eaad1e33c931e548284bab83e8776292ff8f7f28ad2166273f7dbb9af04d554f19bd83

  • SSDEEP

    3072:3XJkLtGo5bxEpoNzJzBxUijwFbo7xqdy4tJ/Wsrg4xw7RkxmJZs:36LsqN1zBxUipg46J/WsrjxGymI

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 1 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
  • 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 3 IoCs

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

  • Checks processor information in registry 2 TTPs 22 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of FindShellTrayWindow 10 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5ed47a43b8d0d423215bcba69e73511c1169061748076818d62dab3ea8c3f9e3.exe
    "C:\Users\Admin\AppData\Local\Temp\5ed47a43b8d0d423215bcba69e73511c1169061748076818d62dab3ea8c3f9e3.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:2220
  • C:\Users\Admin\AppData\Local\Temp\DBAF.exe
    C:\Users\Admin\AppData\Local\Temp\DBAF.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:208
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Dfuqft.tmp",Dsdupihuqo
      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:3584
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 22361
        3⤵
        • Modifies registry class
        • Suspicious use of FindShellTrayWindow
        PID:1056
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /End /tn \Microsoft\Windows\Wininet\CacheTask
        3⤵
          PID:4700
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask
          3⤵
            PID:1632
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 208 -s 524
          2⤵
          • Program crash
          PID:1040
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 208 -ip 208
        1⤵
          PID:4588
        • C:\Windows\System32\rundll32.exe
          C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
          1⤵
            PID:4304
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\SysWOW64\svchost.exe -k LocalService
            1⤵
              PID:2220

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

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

              Filesize

              1.1MB

              MD5

              fc06223e149202f91d3bd8ca7993c2d3

              SHA1

              a9b9471ce72bd5e5b991e1985e5de0672bed06e8

              SHA256

              a2322e86cae01329ae93947d554093b7254ef38f9febf4ac62efeefa8c2dc76d

              SHA512

              961db3445c2c6f09e6654a360afb270afae2d6a530d7e7138ecf4892925675781ebb73de78fb3d5fca19040b85459c93b0c9543a360e3fb23a365d9564821f99

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

              Filesize

              1.1MB

              MD5

              fc06223e149202f91d3bd8ca7993c2d3

              SHA1

              a9b9471ce72bd5e5b991e1985e5de0672bed06e8

              SHA256

              a2322e86cae01329ae93947d554093b7254ef38f9febf4ac62efeefa8c2dc76d

              SHA512

              961db3445c2c6f09e6654a360afb270afae2d6a530d7e7138ecf4892925675781ebb73de78fb3d5fca19040b85459c93b0c9543a360e3fb23a365d9564821f99

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

              Filesize

              792KB

              MD5

              9e3ff54c77c7d43bfdf8cff1d31c3c51

              SHA1

              9681f127f0300093ac15d8a3fc16c289f0b9c045

              SHA256

              2c683e8b9889636eb8279bdb6cf9181e939021acb2cbbed109b27aab6f47861d

              SHA512

              d7b6ff58a48ce21250e13ffd1f57f041615e83cfd3fc2627ea0951a32ad8141fbe760765faada136cf3ab31c9165a0ad0f88ef95f35f58735d169046c257fcec

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

              Filesize

              792KB

              MD5

              9e3ff54c77c7d43bfdf8cff1d31c3c51

              SHA1

              9681f127f0300093ac15d8a3fc16c289f0b9c045

              SHA256

              2c683e8b9889636eb8279bdb6cf9181e939021acb2cbbed109b27aab6f47861d

              SHA512

              d7b6ff58a48ce21250e13ffd1f57f041615e83cfd3fc2627ea0951a32ad8141fbe760765faada136cf3ab31c9165a0ad0f88ef95f35f58735d169046c257fcec

            • memory/208-146-0x00000000021D7000-0x00000000022C3000-memory.dmp

              Filesize

              944KB

            • memory/208-139-0x00000000021D7000-0x00000000022C3000-memory.dmp

              Filesize

              944KB

            • memory/208-140-0x0000000000400000-0x0000000000538000-memory.dmp

              Filesize

              1.2MB

            • memory/208-136-0x0000000000000000-mapping.dmp

            • memory/208-144-0x0000000002350000-0x0000000002482000-memory.dmp

              Filesize

              1.2MB

            • memory/208-145-0x0000000000400000-0x0000000000538000-memory.dmp

              Filesize

              1.2MB

            • memory/1056-155-0x00007FF6A40C6890-mapping.dmp

            • memory/1056-159-0x000001E2FACE0000-0x000001E2FAF9F000-memory.dmp

              Filesize

              2.7MB

            • memory/1056-158-0x00000000008C0000-0x0000000000B6E000-memory.dmp

              Filesize

              2.7MB

            • memory/1056-157-0x000001E2FAB60000-0x000001E2FACA0000-memory.dmp

              Filesize

              1.2MB

            • memory/1056-156-0x000001E2FAB60000-0x000001E2FACA0000-memory.dmp

              Filesize

              1.2MB

            • memory/1632-161-0x0000000000000000-mapping.dmp

            • memory/2220-133-0x0000000002190000-0x0000000002199000-memory.dmp

              Filesize

              36KB

            • memory/2220-132-0x000000000052F000-0x000000000053F000-memory.dmp

              Filesize

              64KB

            • memory/2220-135-0x0000000000400000-0x000000000045E000-memory.dmp

              Filesize

              376KB

            • memory/2220-134-0x0000000000400000-0x000000000045E000-memory.dmp

              Filesize

              376KB

            • memory/3584-148-0x00000000053F0000-0x0000000005F47000-memory.dmp

              Filesize

              11.3MB

            • memory/3584-154-0x0000000006010000-0x0000000006150000-memory.dmp

              Filesize

              1.2MB

            • memory/3584-149-0x0000000006010000-0x0000000006150000-memory.dmp

              Filesize

              1.2MB

            • memory/3584-150-0x0000000006010000-0x0000000006150000-memory.dmp

              Filesize

              1.2MB

            • memory/3584-153-0x0000000006010000-0x0000000006150000-memory.dmp

              Filesize

              1.2MB

            • memory/3584-152-0x0000000006010000-0x0000000006150000-memory.dmp

              Filesize

              1.2MB

            • memory/3584-141-0x0000000000000000-mapping.dmp

            • memory/3584-151-0x0000000006010000-0x0000000006150000-memory.dmp

              Filesize

              1.2MB

            • memory/3584-162-0x00000000053F0000-0x0000000005F47000-memory.dmp

              Filesize

              11.3MB

            • memory/4700-160-0x0000000000000000-mapping.dmp