Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    25/05/2024, 12:26

General

  • Target
    5b3cb2aeecc1b03b7e66fe264cb3c8ecee455cdf848a81ded6410e7d7a159acd.exe
  • Size 842KB
  • Sample240525-pmd7bsbb92
  • SHA256 5b3cb2aeecc1b03b7e66fe264cb3c8ecee455cdf848a81ded6410e7d7a159acd
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • smokeloader

Botnet
  • pub4

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3276
      • C:\Users\Admin\AppData\Local\Temp\5b3cb2aeecc1b03b7e66fe264cb3c8ecee455cdf848a81ded6410e7d7a159acd.exe
        "C:\Users\Admin\AppData\Local\Temp\5b3cb2aeecc1b03b7e66fe264cb3c8ecee455cdf848a81ded6410e7d7a159acd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2892
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k copy Subsequently Subsequently.cmd & Subsequently.cmd & exit
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1968
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • Suspicious use of AdjustPrivilegeToken
            PID:4684
          • C:\Windows\SysWOW64\findstr.exe
            findstr /I "wrsa.exe opssvc.exe"
            4⤵
              PID:4984
            • C:\Windows\SysWOW64\tasklist.exe
              tasklist
              4⤵
              • Enumerates processes with tasklist
              • Suspicious use of AdjustPrivilegeToken
              PID:3928
            • C:\Windows\SysWOW64\findstr.exe
              findstr /I "avastui.exe avgui.exe nswscsvc.exe sophoshealth.exe"
              4⤵
                PID:4024
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c md 196475
                4⤵
                  PID:3640
                • C:\Windows\SysWOW64\findstr.exe
                  findstr /V "MistakeSaStevensStudios" Requesting
                  4⤵
                    PID:3340
                  • C:\Windows\SysWOW64\cmd.exe
                    cmd /c copy /b Formed + Veteran 196475\q
                    4⤵
                      PID:1772
                    • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\196475\Helen.pif
                      196475\Helen.pif 196475\q
                      4⤵
                      • Suspicious use of NtCreateUserProcessOtherParentProcess
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of FindShellTrayWindow
                      • Suspicious use of SendNotifyMessage
                      • Suspicious use of WriteProcessMemory
                      PID:2588
                    • C:\Windows\SysWOW64\PING.EXE
                      ping -n 5 127.0.0.1
                      4⤵
                      • Runs ping.exe
                      PID:2988
                • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\196475\Helen.pif
                  C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\196475\Helen.pif
                  2⤵
                  • Executes dropped EXE
                  • Checks SCSI registry key(s)
                  PID:2020

              Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

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                    Downloads

                    Helen.pif

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\196475\Helen.pif
                    • Size 915KB
                    • SHA256 8498900e57a490404e7ec4d8159bee29aed5852ae88bd484141780eaadb727bb
                    • MD5 SHA1 SHA512 SSDEEP

                    q

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\196475\q
                    • Size 231KB
                    • SHA256 45530379afb9c9e3ca728a89ce52a8ed39b9f3fe81cf24b5da9121280a6c3406
                    • MD5 SHA1 SHA512 SSDEEP

                    Adequate

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Adequate
                    • Size 41KB
                    • SHA256 117916dd46c5ba91040531fb10f9255b8be1ae7fd532dd3264d66274fae87008
                    • MD5 SHA1 SHA512 SSDEEP

                    Arts

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Arts
                    • Size 57KB
                    • SHA256 d434296642b3b057fc8eb591c57a63e901e715c90e93d0e8ac9d58691be3d91d
                    • MD5 SHA1 SHA512 SSDEEP

                    Basename

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Basename
                    • Size 41KB
                    • SHA256 7b2b6a2c5d2d0dd5d0f2a55eefd08dc96479b756ae63cd5c9846b5bf627d2189
                    • MD5 SHA1 SHA512 SSDEEP

                    Blake

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Blake
                    • Size 66KB
                    • SHA256 8177e42aa3dcb7d0f90b29b0d2497341383d50f9218fac71fff1f43440f4bb39
                    • MD5 SHA1 SHA512 SSDEEP

                    Commitments

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Commitments
                    • Size 13KB
                    • SHA256 cc6e1e620467a60a18a74c92c7d438399077d89041dbf4a46013fa553d98649c
                    • MD5 SHA1 SHA512 SSDEEP

                    Considerable

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Considerable
                    • Size 68KB
                    • SHA256 4dd49066d1c0ef7442317488121bf9d84f5a0e3d2699eb0170f85db1602cedf3
                    • MD5 SHA1 SHA512 SSDEEP

                    Cr

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Cr
                    • Size 35KB
                    • SHA256 a6f960dd354a36ba6592ff9ee34da9ab9cef15edc1659caa7486ebc68a6e9063
                    • MD5 SHA1 SHA512 SSDEEP

                    Debian

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Debian
                    • Size 18KB
                    • SHA256 7db996bf46b1d3d4bfb7e72022921f0f8b5c9693befc9af8ded83796a0e78394
                    • MD5 SHA1 SHA512 SSDEEP

                    Device

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Device
                    • Size 52KB
                    • SHA256 3fc4771dd5b1c4dac7a0b741bc1df680ec4962da2575beeec248b3a6342d6f6c
                    • MD5 SHA1 SHA512 SSDEEP

                    Formed

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Formed
                    • Size 189KB
                    • SHA256 0f452c40302f3b81ebf1d2563f33428a80326fcaaec10a3084012448dd3691b1
                    • MD5 SHA1 SHA512 SSDEEP

                    Junk

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Junk
                    • Size 52KB
                    • SHA256 8645f572bd65eff33d20b9fc9992c272df00f3c57529d30977691fe44386da23
                    • MD5 SHA1 SHA512 SSDEEP

                    Oak

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Oak
                    • Size 38KB
                    • SHA256 6625e5c56ee04ff25215cac5a630855c432dd0b835cf48227009b5921cd9ed18
                    • MD5 SHA1 SHA512 SSDEEP

                    Ordinary

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Ordinary
                    • Size 53KB
                    • SHA256 2275df5471d8432573b881f495726b4c8c74b21c7d22ebbfb547c738d8945acc
                    • MD5 SHA1 SHA512 SSDEEP

                    Plants

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Plants
                    • Size 31KB
                    • SHA256 b077542b791c52e3c820ed1896bc9c389c2926560b432f82088ddd72fcb6fa7a
                    • MD5 SHA1 SHA512 SSDEEP

                    Rank

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Rank
                    • Size 62KB
                    • SHA256 e197fadc26cbd712da29f2b9cc84a5ad82077c49b06b283847e5d8b98995964a
                    • MD5 SHA1 SHA512 SSDEEP

                    Requesting

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Requesting
                    • Size 84B
                    • SHA256 755a34e704afda32b93d31833abae2381ac3e91c41a2505b332acd46c9e55bef
                    • MD5 SHA1 SHA512

                    Sean

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Sean
                    • Size 56KB
                    • SHA256 fa52514d38bc2df10d5d1eba9f8538e35a5db225a0aee200d72d8918dce2b2ca
                    • MD5 SHA1 SHA512 SSDEEP

                    Serbia

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Serbia
                    • Size 12KB
                    • SHA256 f60476448ce9fd057a7f74c2f7c112158498f58b720da1b18341b6de216136e7
                    • MD5 SHA1 SHA512 SSDEEP

                    Stylus

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Stylus
                    • Size 67KB
                    • SHA256 32b772007795aeec505675fe48ab7d6b5a3d7ede96b23a5fa6bc82e5bc0cd238
                    • MD5 SHA1 SHA512 SSDEEP

                    Subscribe

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Subscribe
                    • Size 58KB
                    • SHA256 f04faa03f9424ad5ff4dac46b273e8c1a428046066b3083f7e71ee55a7dca2ea
                    • MD5 SHA1 SHA512 SSDEEP

                    Subsequently

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Subsequently
                    • Size 18KB
                    • SHA256 7940e3c4ff2fba6a722b1880cfdf6f35cfff5648b675c525ba109062c680c1d3
                    • MD5 SHA1 SHA512 SSDEEP

                    Sudan

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Sudan
                    • Size 32KB
                    • SHA256 0b53afd9f33d6f02ec84800f8aa9bdb32e13e42a4f2522dc66ee296e9da8ac6b
                    • MD5 SHA1 SHA512 SSDEEP

                    Supporters

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Supporters
                    • Size 7KB
                    • SHA256 9fd94b03f5166e1e7aa724fe5f05f71fb0a9affed92c0a66cb2eaef9ab8ff4f0
                    • MD5 SHA1 SHA512 SSDEEP

                    Veteran

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Veteran
                    • Size 42KB
                    • SHA256 49c1b47d0b1b43ea87df302de59fd46a6a3268024c1d87016aa81f65059150d1
                    • MD5 SHA1 SHA512 SSDEEP

                    Weapon

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Weapon
                    • Size 56KB
                    • SHA256 0a4b696674fcd807e4ce7a744bb9c8606c66bb7e9bef850ec57873295e09d104
                    • MD5 SHA1 SHA512 SSDEEP

                    memory/2020-448-0x0000000000400000-0x000000000040B000-memory.dmp

                    memory/2020-449-0x0000000000400000-0x000000000040B000-memory.dmp