Analysis

  • max time kernel
    133s
  • max time network
    297s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    03/05/2024, 22:34

General

  • Target
    c8e013303ccd9105c2042b0d35e923d95eae9b6294550a9a206fdbfad6eae057.exe
  • Size 719KB
  • Sample240503-2ha1bsba59
  • SHA256 c8e013303ccd9105c2042b0d35e923d95eae9b6294550a9a206fdbfad6eae057
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • smokeloader

Botnet
  • pub3

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 8 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:3316
      • C:\Users\Admin\AppData\Local\Temp\c8e013303ccd9105c2042b0d35e923d95eae9b6294550a9a206fdbfad6eae057.exe
        "C:\Users\Admin\AppData\Local\Temp\c8e013303ccd9105c2042b0d35e923d95eae9b6294550a9a206fdbfad6eae057.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3484
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k move Ink Ink.cmd & Ink.cmd & exit
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:4056
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • Suspicious use of AdjustPrivilegeToken
            PID:4192
          • C:\Windows\SysWOW64\findstr.exe
            findstr /I "wrsa.exe opssvc.exe"
            4⤵
              PID:4160
            • C:\Windows\SysWOW64\tasklist.exe
              tasklist
              4⤵
              • Enumerates processes with tasklist
              • Suspicious use of AdjustPrivilegeToken
              PID:2880
            • C:\Windows\SysWOW64\findstr.exe
              findstr /I "avastui.exe avgui.exe nswscsvc.exe sophoshealth.exe"
              4⤵
                PID:1556
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c md 333163
                4⤵
                  PID:2088
                • C:\Windows\SysWOW64\findstr.exe
                  findstr /V "CLARKESEEKINGNORWAYREAD" Transform
                  4⤵
                    PID:2864
                  • C:\Windows\SysWOW64\cmd.exe
                    cmd /c copy /b Bite + Nylon + Optimal 333163\j
                    4⤵
                      PID:64
                    • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\333163\Twins.pif
                      333163\Twins.pif 333163\j
                      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:204
                    • C:\Windows\SysWOW64\PING.EXE
                      ping -n 5 127.0.0.1
                      4⤵
                      • Runs ping.exe
                      PID:4444
                • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\333163\Twins.pif
                  C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\333163\Twins.pif
                  2⤵
                  • Executes dropped EXE
                  • Checks SCSI registry key(s)
                  PID:2360

              Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

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                    Downloads

                    Twins.pif

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\333163\Twins.pif
                    • Size 925KB
                    • SHA256 1300262a9d6bb6fcbefc0d299cce194435790e70b9c7b4a651e202e90a32fd49
                    • MD5 SHA1 SHA512 SSDEEP

                    j

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\333163\j
                    • Size 210KB
                    • SHA256 85b73feedd8197d87c14e5fe394dcf9509a987a4da1021ba3ed739a7e2909417
                    • MD5 SHA1 SHA512 SSDEEP

                    Arrive

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Arrive
                    • Size 7KB
                    • SHA256 87ae0006f377d10a8c54f93e699220834330a452dc48c8dff722d82a048df3b3
                    • MD5 SHA1 SHA512 SSDEEP

                    Bite

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Bite
                    • Size 54KB
                    • SHA256 a22e0ff3583dddf90b2c10518121ad881c3602738a046e89d73410806ddfe62d
                    • MD5 SHA1 SHA512 SSDEEP

                    Blessed

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Blessed
                    • Size 31KB
                    • SHA256 397052d31ea88425f3379d93f5b1dbe0c0ea591fd2de5597846cc2da8a9e1151
                    • MD5 SHA1 SHA512 SSDEEP

                    Bloggers

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Bloggers
                    • Size 8KB
                    • SHA256 d15e6716a700144c2863606b2b26fefc22e7e562615f5c52b46a7e3f065d22bd
                    • MD5 SHA1 SHA512 SSDEEP

                    Brussels

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Brussels
                    • Size 47KB
                    • SHA256 940dc03c00c7917054fd4de58416b07ad7dee64da88dfe5736ccf2ac365a7de5
                    • MD5 SHA1 SHA512 SSDEEP

                    Citation

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Citation
                    • Size 50KB
                    • SHA256 98337b324e7aec5ac7c082f899e7b9bea4f09da299e805615f574500206c4603
                    • MD5 SHA1 SHA512 SSDEEP

                    Commission

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Commission
                    • Size 28KB
                    • SHA256 d036dcc45293a51233e048803ccd9d96c40ec9ad2130be959f09fec60b30be99
                    • MD5 SHA1 SHA512 SSDEEP

                    Common

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Common
                    • Size 12KB
                    • SHA256 208f5fe45ae203bdcc5137eb1abbe78e4ba082ac62622f7eedb854acb2836ced
                    • MD5 SHA1 SHA512 SSDEEP

                    Ebooks

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Ebooks
                    • Size 12KB
                    • SHA256 69668a6d7b91cfb3a4deb0e845e6334df9037c648c0772ebb2d5c9e5f20573d7
                    • MD5 SHA1 SHA512 SSDEEP

                    Foam

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Foam
                    • Size 46KB
                    • SHA256 3745a49c15faa0ff0d4a6bc19e0eed7bfa817aaa9308cb5f3a70dcfff86932e5
                    • MD5 SHA1 SHA512 SSDEEP

                    Fred

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Fred
                    • Size 56KB
                    • SHA256 f95c6dec1ac818741ddc3722e771488791a3bdeaa60cbbe257f63dabea263c03
                    • MD5 SHA1 SHA512 SSDEEP

                    Frequent

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Frequent
                    • Size 49KB
                    • SHA256 4492b37709dc875951ef7f91062c146554a6e85eace84806d126a57a1ecc4f1e
                    • MD5 SHA1 SHA512 SSDEEP

                    Ink

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Ink
                    • Size 27KB
                    • SHA256 a1bcdee60fad62582dc3b62bf17dc9d952a0baec22a1636bfbf3cbbf664594a2
                    • MD5 SHA1 SHA512 SSDEEP

                    Intelligence

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Intelligence
                    • Size 49KB
                    • SHA256 b1234563fa54f46c03094dabfeee33f1aa534f854bebd34701ba685e346166a9
                    • MD5 SHA1 SHA512 SSDEEP

                    Leone

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Leone
                    • Size 47KB
                    • SHA256 9fe73754925aa37b3f20393611ad2a44a43961edd8e8e4d8efd69b8623d405f3
                    • MD5 SHA1 SHA512 SSDEEP

                    Maintaining

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Maintaining
                    • Size 47KB
                    • SHA256 75f392328d934257039580c4afa942cdd50e01aca4a597c2ab121b115fa67776
                    • MD5 SHA1 SHA512 SSDEEP

                    Manually

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Manually
                    • Size 62KB
                    • SHA256 94bc11c0d77ef6a727606b675ebe025d44b1353aa0a998428edbf954d920d606
                    • MD5 SHA1 SHA512 SSDEEP

                    Monroe

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Monroe
                    • Size 69KB
                    • SHA256 e972e4d346a8dcfb949df0595ce108e26745459eaa3ae085aca0c0d69c29e0d2
                    • MD5 SHA1 SHA512 SSDEEP

                    Nashville

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Nashville
                    • Size 11KB
                    • SHA256 7f11648d2b673e3b410c7ac81b0923dd1957992530c87fa23bc395d5c4390f82
                    • MD5 SHA1 SHA512 SSDEEP

                    Nylon

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Nylon
                    • Size 140KB
                    • SHA256 05f45253e91ff3499e07468867b14771aed714e1e25a54ac0bbdeff26a7794b2
                    • MD5 SHA1 SHA512 SSDEEP

                    Ongoing

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Ongoing
                    • Size 29KB
                    • SHA256 02cebb6afcafcb6887ee16f2701ab240f0f9205a19e472925cc52ca97b4e8009
                    • MD5 SHA1 SHA512 SSDEEP

                    Optimal

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Optimal
                    • Size 16KB
                    • SHA256 a393ae065ee0a1050a005d4f6394694bee2db1c1d27fca71cbadebe9a57a1f70
                    • MD5 SHA1 SHA512 SSDEEP

                    Personnel

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Personnel
                    • Size 25KB
                    • SHA256 dbd68d514dd902196a605552d373028f62fe4e66afe0f850d1e2363530f815f7
                    • MD5 SHA1 SHA512 SSDEEP

                    Postcards

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Postcards
                    • Size 19KB
                    • SHA256 da8769b1ac86cb8c9046dd8f97dbd1a6a7ed699046525b5cfe19be4c5b24db66
                    • MD5 SHA1 SHA512 SSDEEP

                    Proud

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Proud
                    • Size 40KB
                    • SHA256 9a24e2d124db9d16c616702f7e9b21674aa652c2cc9bc508210f90a0205f2b78
                    • MD5 SHA1 SHA512 SSDEEP

                    Recruiting

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Recruiting
                    • Size 66KB
                    • SHA256 8ab3d4409d549bc775ba004e30c4b89a126d65495614cc54888d9d2118d6fb9d
                    • MD5 SHA1 SHA512 SSDEEP

                    Several

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Several
                    • Size 6KB
                    • SHA256 b9b1c193f1aca54d552258858a46d39f52e43fce9a1a19797531cd50b8954efd
                    • MD5 SHA1 SHA512 SSDEEP

                    Shame

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Shame
                    • Size 35KB
                    • SHA256 ad249e988b39bec92c7f0d248377484061e7d7b4aaf6b2c84493ce4cba4ef253
                    • MD5 SHA1 SHA512 SSDEEP

                    Sit

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Sit
                    • Size 61KB
                    • SHA256 947766483777cd6f1c2193c8ef2ea62b0c42178a23ff03042d8e644bfa7cf5e7
                    • MD5 SHA1 SHA512 SSDEEP

                    Transform

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Transform
                    • Size 201B
                    • SHA256 3653c1f083e4661d03be26c2f2d1c548b70f813ad16d2eb923a86d9a84b365c0
                    • MD5 SHA1 SHA512

                    Welding

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Welding
                    • Size 12KB
                    • SHA256 1e9fbca5770623da565ecaa138ff9c0a8bcecabb1fa6b9a61a4495c12a25170b
                    • MD5 SHA1 SHA512 SSDEEP

                    memory/2360-80-0x0000000000400000-0x000000000040B000-memory.dmp

                    memory/2360-81-0x0000000000400000-0x000000000040B000-memory.dmp