Analysis

  • max time kernel
    141s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/05/2024, 02:05

General

  • Target
    d54259b35ece6e39b159317128bfd62f88abbaadd92537379c4bae078e82fe69.exe
  • Size 776KB
  • Sample240509-ch3ynsfb89
  • SHA256 d54259b35ece6e39b159317128bfd62f88abbaadd92537379c4bae078e82fe69
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • smokeloader

Botnet
  • pub2

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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:3416
      • C:\Users\Admin\AppData\Local\Temp\d54259b35ece6e39b159317128bfd62f88abbaadd92537379c4bae078e82fe69.exe
        "C:\Users\Admin\AppData\Local\Temp\d54259b35ece6e39b159317128bfd62f88abbaadd92537379c4bae078e82fe69.exe"
        2⤵
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:2852
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k move Hwy Hwy.cmd & Hwy.cmd & exit
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:4796
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • Suspicious use of AdjustPrivilegeToken
            PID:4944
          • C:\Windows\SysWOW64\findstr.exe
            findstr /I "wrsa.exe opssvc.exe"
            4⤵
              PID:3640
            • C:\Windows\SysWOW64\tasklist.exe
              tasklist
              4⤵
              • Enumerates processes with tasklist
              • Suspicious use of AdjustPrivilegeToken
              PID:4724
            • C:\Windows\SysWOW64\findstr.exe
              findstr /I "avastui.exe avgui.exe nswscsvc.exe sophoshealth.exe"
              4⤵
                PID:3120
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c md 1131
                4⤵
                  PID:4912
                • C:\Windows\SysWOW64\findstr.exe
                  findstr /V "perulesserpalacecorrespondence" Video
                  4⤵
                    PID:4672
                  • C:\Windows\SysWOW64\cmd.exe
                    cmd /c copy /b Outlook + Imports 1131\U
                    4⤵
                      PID:4444
                    • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\1131\End.pif
                      1131\End.pif 1131\U
                      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:1492
                    • C:\Windows\SysWOW64\PING.EXE
                      ping -n 5 127.0.0.1
                      4⤵
                      • Runs ping.exe
                      PID:2092
                • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\1131\End.pif
                  C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\1131\End.pif
                  2⤵
                  • Executes dropped EXE
                  • Checks SCSI registry key(s)
                  PID:2868

              Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    End.pif

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\1131\End.pif
                    • Size 925KB
                    • SHA256 1300262a9d6bb6fcbefc0d299cce194435790e70b9c7b4a651e202e90a32fd49
                    • MD5 SHA1 SHA512 SSDEEP

                    U

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\1131\U
                    • Size 221KB
                    • SHA256 ff61738c19939a7408bbf2885b5d9a6ee9201d6bb71e1db6f4442d976589605d
                    • MD5 SHA1 SHA512 SSDEEP

                    Agrees

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Agrees
                    • Size 62KB
                    • SHA256 4da04943476417fe8b9dab26b5b23496a921b3505f405c51d8c6b5f5ba8ce31b
                    • MD5 SHA1 SHA512 SSDEEP

                    Capability

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Capability
                    • Size 16KB
                    • SHA256 9ab1297161e801881bb75276e562e6b91a822df226a507be927e102d3706d2cf
                    • MD5 SHA1 SHA512 SSDEEP

                    Charging

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Charging
                    • Size 65KB
                    • SHA256 d733b28fae8e531edf10b4175b00f1a9c333e06dbd950f74980977eb0e17ab8e
                    • MD5 SHA1 SHA512 SSDEEP

                    Confusion

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Confusion
                    • Size 8KB
                    • SHA256 df043072990892e2d5a70b214d924bc2db03fd838bca7d8fd283c8e50d31e380
                    • MD5 SHA1 SHA512 SSDEEP

                    Documents

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Documents
                    • Size 44KB
                    • SHA256 3ad1a2235b6b0deb7c387329723c4f5cf36c4032977bb5bccf90a56a90769f60
                    • MD5 SHA1 SHA512 SSDEEP

                    Encounter

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Encounter
                    • Size 45KB
                    • SHA256 356996ada99749863fbdf577307bd29288bbb20c6eb3f5bc3985d5055a8b0b74
                    • MD5 SHA1 SHA512 SSDEEP

                    Final

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Final
                    • Size 42KB
                    • SHA256 511364a6dee2b2b1524dd4d1ef5d94a3ff70d7a24121ee38ea68e5820ecba47d
                    • MD5 SHA1 SHA512 SSDEEP

                    Goal

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Goal
                    • Size 48KB
                    • SHA256 44616ac50fb81013e90d95df4af787d0aaa70d8ff6f9b81f83fa4aaa03e9f97e
                    • MD5 SHA1 SHA512 SSDEEP

                    Hormone

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Hormone
                    • Size 62KB
                    • SHA256 700fa0779f67665a1c5737ddfed7c0a8aa42cdfdf76d660bb66f944fa47ca295
                    • MD5 SHA1 SHA512 SSDEEP

                    Hwy

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Hwy
                    • Size 16KB
                    • SHA256 42359e3c847a71813923214f4dc3a550ecfc71042339132c599339ecaa72c5c1
                    • MD5 SHA1 SHA512 SSDEEP

                    Imports

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Imports
                    • Size 76KB
                    • SHA256 c3e207c75f0773306412c63cedd5465ec8b2a4b75a8b852ec763ba37b6045912
                    • MD5 SHA1 SHA512 SSDEEP

                    Inclusive

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Inclusive
                    • Size 28KB
                    • SHA256 c44f28df94a7f749db47b044c0269197d7a71437e7391624a94e801c73ce89e3
                    • MD5 SHA1 SHA512 SSDEEP

                    Large

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Large
                    • Size 35KB
                    • SHA256 a51d5a13da08da201cfa532dec4c75cee6e4262319181a55068d0602ab601aaa
                    • MD5 SHA1 SHA512 SSDEEP

                    Lebanon

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Lebanon
                    • Size 42KB
                    • SHA256 df71ec9eadeb3acbb56ef804912ed4d00e2f6d6595835fc9e9ab822dd8d28610
                    • MD5 SHA1 SHA512 SSDEEP

                    Master

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Master
                    • Size 20KB
                    • SHA256 99ad54e17eb39acc10f312dec1c97f3304c9ca7a7aece9445189c0a289a1e831
                    • MD5 SHA1 SHA512 SSDEEP

                    Outlook

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Outlook
                    • Size 145KB
                    • SHA256 0a3ba8b374bab00a7a25cfbc0d362bec30a85a5c19167050a5902cc01b634c43
                    • MD5 SHA1 SHA512 SSDEEP

                    Performs

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Performs
                    • Size 41KB
                    • SHA256 25d0c37d809df03ea5b5ed99f83674928a62c0511f726d078bc6f7efb723a0b1
                    • MD5 SHA1 SHA512 SSDEEP

                    Phenomenon

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Phenomenon
                    • Size 58KB
                    • SHA256 912ee8a0a03bc4612dc42662b2a17032d5787209520ae7e3a93a6c02f5799a79
                    • MD5 SHA1 SHA512 SSDEEP

                    Prerequisite

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Prerequisite
                    • Size 67KB
                    • SHA256 67b8c664c1144a63c24084164cad6aa809959989a6e1f9ac5f34988c49ca0e65
                    • MD5 SHA1 SHA512 SSDEEP

                    Projected

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Projected
                    • Size 20KB
                    • SHA256 5aaeed715f0fb58eff0bf70f387be141b3d14d5a909b49e9db7e2b095edd320c
                    • MD5 SHA1 SHA512 SSDEEP

                    Purchasing

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Purchasing
                    • Size 53KB
                    • SHA256 fb79a23ff6f19be3905e3bd5d455a62d3adf3aa77dd65b2c6067f6f3eb8fd07a
                    • MD5 SHA1 SHA512 SSDEEP

                    Respectively

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Respectively
                    • Size 32KB
                    • SHA256 494632eb8042259018f22bb23d2bab18de989fd505a92129d766219515cf3126
                    • MD5 SHA1 SHA512 SSDEEP

                    Seems

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Seems
                    • Size 43KB
                    • SHA256 a4876320f65e332ceac09e0c83638b209ffa1cd3806057bbd368c8f5079c9875
                    • MD5 SHA1 SHA512 SSDEEP

                    Std

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Std
                    • Size 8KB
                    • SHA256 0980c717933ebc993368d15b3ba4bc5a71daf3fb778e84138193ad0f3a2715a1
                    • MD5 SHA1 SHA512 SSDEEP

                    Therapist

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Therapist
                    • Size 24KB
                    • SHA256 fc2399d47edb8c66469bb25060da2c1f25de01e21af40ce9a29558d3a3a3dae3
                    • MD5 SHA1 SHA512 SSDEEP

                    Video

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Video
                    • Size 143B
                    • SHA256 47983be9149d6792688aa72763f2e941a768af9875aca3e1ca18f0aae75921b2
                    • MD5 SHA1 SHA512

                    Yearly

                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Yearly
                    • Size 61KB
                    • SHA256 a771fd25611b7fe3a6eea8ecd5201b6ecf202943ff55c937d1431560ddc36ffb
                    • MD5 SHA1 SHA512 SSDEEP

                    memory/2868-68-0x0000000000400000-0x000000000040B000-memory.dmp

                    memory/2868-69-0x0000000000400000-0x000000000040B000-memory.dmp