Analysis

  • max time kernel
    23s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    12-01-2024 10:49

General

  • Target

    b235e9117da103f7ee40148ed47aaaeb.exe

  • Size

    289KB

  • MD5

    b235e9117da103f7ee40148ed47aaaeb

  • SHA1

    69bf2c2680062134fcba12cdacff2fb9c762753a

  • SHA256

    f6957a035715b303925a5215f2f5b56933aaf0cb3307d3bf8826f2d35515c73f

  • SHA512

    31c149909fed3642c6052e0539072be2aa54b322c14be2ed2a1a66bcc72b9d89f53409179b389fa39cfef021950f575ea3e478050549cf04c33c836123d9ca21

  • SSDEEP

    6144:KecopGFVVrLpU7ZaEqaEtRbyaG/6x+eybRXMA:K+pGFfrlU7YEqNti6xybph

Malware Config

Extracted

Family

smokeloader

Botnet

up3

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
  • 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.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Runs regedit.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 14 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 11 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\b235e9117da103f7ee40148ed47aaaeb.exe
    "C:\Users\Admin\AppData\Local\Temp\b235e9117da103f7ee40148ed47aaaeb.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2896
    • C:\Users\Admin\AppData\Local\Temp\b235e9117da103f7ee40148ed47aaaeb.exe
      "C:\Users\Admin\AppData\Local\Temp\b235e9117da103f7ee40148ed47aaaeb.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2732
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
      PID:2712
      • C:\Users\Admin\AppData\Local\Temp\e99uc75i_1.exe
        /suac
        2⤵
          PID:1700
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /CREATE /SC ONLOGON /TN "Windows Update Check - 0x1BB70478" /TR "C:\PROGRA~3\JAVAUP~1\e99uc75i.exe" /RL HIGHEST
            3⤵
            • Creates scheduled task(s)
            PID:1388
          • C:\Windows\SysWOW64\regedit.exe
            "C:\Windows\SysWOW64\regedit.exe"
            3⤵
            • Runs regedit.exe
            PID:1532
      • C:\Users\Admin\AppData\Local\Temp\6114.exe
        C:\Users\Admin\AppData\Local\Temp\6114.exe
        1⤵
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Checks processor information in registry
        • Suspicious use of AdjustPrivilegeToken
        PID:2656
      • C:\Users\Admin\AppData\Local\Temp\69AC.exe
        C:\Users\Admin\AppData\Local\Temp\69AC.exe
        1⤵
          PID:2576

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\6114.exe

          Filesize

          92KB

          MD5

          466b29d280dcdffa55451031921958ce

          SHA1

          7d80acc9ed98fe8a699520ac1678889dc9710b1b

          SHA256

          5da619cd850f359b0da2c53a53fea1e81f78051234d6840fcb1e8d6eb11c1588

          SHA512

          a5028ea5a9612dea45671087e10d5666b7a142902676ffd9cc5142e9a8fdf4ec8af82279963dbcd9c15319beb6e21051fe1de3192eb5a1090881b2de65ca4798

        • memory/1252-98-0x0000000002DA0000-0x0000000002DA1000-memory.dmp

          Filesize

          4KB

        • memory/1252-62-0x00000000773A1000-0x00000000773A2000-memory.dmp

          Filesize

          4KB

        • memory/1252-7-0x0000000002DD0000-0x0000000002DE6000-memory.dmp

          Filesize

          88KB

        • memory/1532-104-0x0000000000AA0000-0x0000000000B06000-memory.dmp

          Filesize

          408KB

        • memory/1532-107-0x0000000000090000-0x000000000009B000-memory.dmp

          Filesize

          44KB

        • memory/1532-106-0x0000000000AA0000-0x0000000000B05000-memory.dmp

          Filesize

          404KB

        • memory/1532-103-0x0000000000AA0000-0x0000000000B06000-memory.dmp

          Filesize

          408KB

        • memory/1700-91-0x0000000000330000-0x0000000000336000-memory.dmp

          Filesize

          24KB

        • memory/1700-95-0x0000000001C60000-0x0000000001CC6000-memory.dmp

          Filesize

          408KB

        • memory/1700-93-0x0000000001C60000-0x0000000001CC6000-memory.dmp

          Filesize

          408KB

        • memory/1700-92-0x0000000002510000-0x000000000251C000-memory.dmp

          Filesize

          48KB

        • memory/1700-111-0x0000000000330000-0x0000000000336000-memory.dmp

          Filesize

          24KB

        • memory/1700-89-0x0000000001C60000-0x0000000001CC6000-memory.dmp

          Filesize

          408KB

        • memory/1700-109-0x0000000000010000-0x000000000006D000-memory.dmp

          Filesize

          372KB

        • memory/1700-110-0x0000000001C60000-0x0000000001CC6000-memory.dmp

          Filesize

          408KB

        • memory/1960-76-0x00000000773A1000-0x00000000773A2000-memory.dmp

          Filesize

          4KB

        • memory/2576-94-0x0000000000CC0000-0x0000000001256000-memory.dmp

          Filesize

          5.6MB

        • memory/2576-59-0x0000000000CC0000-0x0000000001256000-memory.dmp

          Filesize

          5.6MB

        • memory/2656-22-0x0000000000010000-0x000000000006D000-memory.dmp

          Filesize

          372KB

        • memory/2656-23-0x0000000000350000-0x00000000003B6000-memory.dmp

          Filesize

          408KB

        • memory/2656-24-0x00000000003C0000-0x00000000003C1000-memory.dmp

          Filesize

          4KB

        • memory/2656-25-0x00000000003D0000-0x00000000003DD000-memory.dmp

          Filesize

          52KB

        • memory/2656-28-0x0000000077540000-0x0000000077541000-memory.dmp

          Filesize

          4KB

        • memory/2656-29-0x0000000000590000-0x0000000000591000-memory.dmp

          Filesize

          4KB

        • memory/2656-30-0x00000000005D0000-0x00000000005DC000-memory.dmp

          Filesize

          48KB

        • memory/2656-31-0x0000000000350000-0x00000000003B6000-memory.dmp

          Filesize

          408KB

        • memory/2656-26-0x0000000000350000-0x00000000003B6000-memory.dmp

          Filesize

          408KB

        • memory/2656-47-0x0000000000350000-0x00000000003B6000-memory.dmp

          Filesize

          408KB

        • memory/2712-51-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-75-0x00000000000D0000-0x0000000000194000-memory.dmp

          Filesize

          784KB

        • memory/2712-49-0x0000000000350000-0x0000000000351000-memory.dmp

          Filesize

          4KB

        • memory/2712-48-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-113-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-34-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-61-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-35-0x00000000000D0000-0x0000000000194000-memory.dmp

          Filesize

          784KB

        • memory/2712-60-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-63-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-65-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-64-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-66-0x0000000077350000-0x00000000774F9000-memory.dmp

          Filesize

          1.7MB

        • memory/2712-68-0x00000000000D0000-0x0000000000194000-memory.dmp

          Filesize

          784KB

        • memory/2712-67-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-69-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-70-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-72-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-71-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-73-0x0000000000260000-0x0000000000266000-memory.dmp

          Filesize

          24KB

        • memory/2712-36-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-50-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-74-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-77-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-86-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-38-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-39-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-40-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-43-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-44-0x0000000000370000-0x000000000037C000-memory.dmp

          Filesize

          48KB

        • memory/2712-45-0x00000000000D0000-0x0000000000194000-memory.dmp

          Filesize

          784KB

        • memory/2712-96-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-41-0x00000000000D0000-0x0000000000194000-memory.dmp

          Filesize

          784KB

        • memory/2712-102-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2712-37-0x0000000000260000-0x0000000000266000-memory.dmp

          Filesize

          24KB

        • memory/2712-33-0x0000000077530000-0x00000000776B1000-memory.dmp

          Filesize

          1.5MB

        • memory/2732-8-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2732-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2732-6-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2732-3-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2896-4-0x0000000000612000-0x0000000000620000-memory.dmp

          Filesize

          56KB

        • memory/2896-5-0x0000000000230000-0x0000000000239000-memory.dmp

          Filesize

          36KB