Analysis

  • max time kernel
    23s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-01-2024 10:51

General

  • Target

    ff5018aa96d03981958cc226c3b2aa40.exe

  • Size

    289KB

  • MD5

    ff5018aa96d03981958cc226c3b2aa40

  • SHA1

    752bcfea1e97ade90052e0e52be75ede15fe4e24

  • SHA256

    fd68ed7ff3adfd19b32efde83d13edb583c7d756d0780d079efac6d09ff8bbb4

  • SHA512

    56746e106d37b10121d9dab10e236c9da2bc91f7aab92f5edc3b8e4ec6fa353437fe40e8ed3b8a1a6e5e4f72bea5f8acb5ed367a8dd1c9587e9d4ad26732f77f

  • SSDEEP

    6144:ZecopGFVV+LpU7Z6OHwWylGHbTI/6i9HbRXMA:Z+pGFf+lU7LHnykHC6Ybph

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2020

C2

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 2 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 16 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\ff5018aa96d03981958cc226c3b2aa40.exe
    "C:\Users\Admin\AppData\Local\Temp\ff5018aa96d03981958cc226c3b2aa40.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4004
    • C:\Users\Admin\AppData\Local\Temp\ff5018aa96d03981958cc226c3b2aa40.exe
      "C:\Users\Admin\AppData\Local\Temp\ff5018aa96d03981958cc226c3b2aa40.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:5092
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 5092 -s 328
        3⤵
        • Program crash
        PID:3248
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5092 -ip 5092
    1⤵
      PID:1828
    • C:\Users\Admin\AppData\Local\Temp\9981.exe
      C:\Users\Admin\AppData\Local\Temp\9981.exe
      1⤵
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Checks processor information in registry
      • Suspicious use of AdjustPrivilegeToken
      PID:912
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        2⤵
          PID:4888
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 4888 -s 1140
            3⤵
            • Program crash
            PID:5064
      • C:\Users\Admin\AppData\Local\Temp\9FAC.exe
        C:\Users\Admin\AppData\Local\Temp\9FAC.exe
        1⤵
          PID:1068
          • C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe
            "C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"
            2⤵
              PID:3304
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4888 -ip 4888
            1⤵
              PID:4868

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\9981.exe

              Filesize

              360KB

              MD5

              80c413180b6bd0dd664adc4e0665b494

              SHA1

              e791e4a3391fc6b7bcb58399cd4fa3c52a06b940

              SHA256

              6d99cec56614b6b8a23dfa84a50c6bbfde535411c6366ac2bcc20c9f5af62880

              SHA512

              347f4ae6f308b37d055a6177478e45ab3838d7020abed70c7aa138d2c3771e709de204da8550aebdcaa6139d869dc7328cc7e645c4dd48d1066f9ad70225644a

            • memory/912-18-0x0000000002280000-0x00000000022E6000-memory.dmp

              Filesize

              408KB

            • memory/912-34-0x0000000002280000-0x00000000022E6000-memory.dmp

              Filesize

              408KB

            • memory/912-19-0x0000000002640000-0x000000000264D000-memory.dmp

              Filesize

              52KB

            • memory/912-35-0x0000000002830000-0x0000000002831000-memory.dmp

              Filesize

              4KB

            • memory/912-20-0x0000000077154000-0x0000000077155000-memory.dmp

              Filesize

              4KB

            • memory/912-21-0x0000000002280000-0x00000000022E6000-memory.dmp

              Filesize

              408KB

            • memory/912-16-0x0000000000010000-0x000000000006D000-memory.dmp

              Filesize

              372KB

            • memory/912-25-0x0000000002280000-0x00000000022E6000-memory.dmp

              Filesize

              408KB

            • memory/912-24-0x0000000002840000-0x000000000284C000-memory.dmp

              Filesize

              48KB

            • memory/912-23-0x00000000027C0000-0x00000000027C1000-memory.dmp

              Filesize

              4KB

            • memory/1068-48-0x0000000000BA0000-0x0000000001136000-memory.dmp

              Filesize

              5.6MB

            • memory/1068-41-0x0000000000BA0000-0x0000000001136000-memory.dmp

              Filesize

              5.6MB

            • memory/3304-60-0x0000000072690000-0x0000000072DA7000-memory.dmp

              Filesize

              7.1MB

            • memory/3304-65-0x0000000072690000-0x0000000072DA7000-memory.dmp

              Filesize

              7.1MB

            • memory/3568-5-0x0000000002540000-0x0000000002556000-memory.dmp

              Filesize

              88KB

            • memory/4004-1-0x0000000000490000-0x0000000000590000-memory.dmp

              Filesize

              1024KB

            • memory/4004-2-0x0000000002190000-0x0000000002199000-memory.dmp

              Filesize

              36KB

            • memory/4888-29-0x0000000000640000-0x0000000000704000-memory.dmp

              Filesize

              784KB

            • memory/4888-28-0x0000000000770000-0x0000000000BA4000-memory.dmp

              Filesize

              4.2MB

            • memory/4888-30-0x0000000000640000-0x0000000000704000-memory.dmp

              Filesize

              784KB

            • memory/4888-63-0x0000000000770000-0x0000000000BA3000-memory.dmp

              Filesize

              4.2MB

            • memory/4888-32-0x0000000000640000-0x0000000000704000-memory.dmp

              Filesize

              784KB

            • memory/4888-64-0x0000000000640000-0x0000000000704000-memory.dmp

              Filesize

              784KB

            • memory/4888-61-0x0000000004590000-0x0000000004592000-memory.dmp

              Filesize

              8KB

            • memory/4888-26-0x0000000000770000-0x0000000000BA4000-memory.dmp

              Filesize

              4.2MB

            • memory/5092-8-0x0000000000400000-0x0000000000409000-memory.dmp

              Filesize

              36KB

            • memory/5092-4-0x0000000000400000-0x0000000000409000-memory.dmp

              Filesize

              36KB

            • memory/5092-3-0x0000000000400000-0x0000000000409000-memory.dmp

              Filesize

              36KB