Analysis

  • max time kernel
    152s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/09/2023, 20:47

General

  • Target

    c76fe7e5cfe5a94cc437f360f815b6f7c7eef063c528503e27e1d27a101f282a.exe

  • Size

    188KB

  • MD5

    ea676996230ba69c73e6dda4a710d36c

  • SHA1

    f2bdd794d402fe4a0f23161c3d661a6f122311f3

  • SHA256

    c76fe7e5cfe5a94cc437f360f815b6f7c7eef063c528503e27e1d27a101f282a

  • SHA512

    8a459903117ee60b128429d3b73818981a0c6f676e6870e6672d1b81f66949128f11419c9564d3f0796fde8e138a04cfaa99221d4b670db3f610e8aef11b0852

  • SSDEEP

    3072:3H1HnMnZetjjaa0dfxvziBeDey+K7zhhFakRK5VAyL:X1HnMnZE0dfxvziBeDe7K71hFRRG

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.

  • Executes dropped EXE 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 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\c76fe7e5cfe5a94cc437f360f815b6f7c7eef063c528503e27e1d27a101f282a.exe
    "C:\Users\Admin\AppData\Local\Temp\c76fe7e5cfe5a94cc437f360f815b6f7c7eef063c528503e27e1d27a101f282a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:232
    • C:\Users\Admin\AppData\Local\Temp\c76fe7e5cfe5a94cc437f360f815b6f7c7eef063c528503e27e1d27a101f282a.exe
      "C:\Users\Admin\AppData\Local\Temp\c76fe7e5cfe5a94cc437f360f815b6f7c7eef063c528503e27e1d27a101f282a.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2956
  • C:\Users\Admin\AppData\Roaming\iewucdv
    C:\Users\Admin\AppData\Roaming\iewucdv
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1764
    • C:\Users\Admin\AppData\Roaming\iewucdv
      C:\Users\Admin\AppData\Roaming\iewucdv
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:1412

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Roaming\iewucdv

          Filesize

          188KB

          MD5

          ea676996230ba69c73e6dda4a710d36c

          SHA1

          f2bdd794d402fe4a0f23161c3d661a6f122311f3

          SHA256

          c76fe7e5cfe5a94cc437f360f815b6f7c7eef063c528503e27e1d27a101f282a

          SHA512

          8a459903117ee60b128429d3b73818981a0c6f676e6870e6672d1b81f66949128f11419c9564d3f0796fde8e138a04cfaa99221d4b670db3f610e8aef11b0852

        • C:\Users\Admin\AppData\Roaming\iewucdv

          Filesize

          188KB

          MD5

          ea676996230ba69c73e6dda4a710d36c

          SHA1

          f2bdd794d402fe4a0f23161c3d661a6f122311f3

          SHA256

          c76fe7e5cfe5a94cc437f360f815b6f7c7eef063c528503e27e1d27a101f282a

          SHA512

          8a459903117ee60b128429d3b73818981a0c6f676e6870e6672d1b81f66949128f11419c9564d3f0796fde8e138a04cfaa99221d4b670db3f610e8aef11b0852

        • C:\Users\Admin\AppData\Roaming\iewucdv

          Filesize

          188KB

          MD5

          ea676996230ba69c73e6dda4a710d36c

          SHA1

          f2bdd794d402fe4a0f23161c3d661a6f122311f3

          SHA256

          c76fe7e5cfe5a94cc437f360f815b6f7c7eef063c528503e27e1d27a101f282a

          SHA512

          8a459903117ee60b128429d3b73818981a0c6f676e6870e6672d1b81f66949128f11419c9564d3f0796fde8e138a04cfaa99221d4b670db3f610e8aef11b0852

        • memory/232-1-0x00000000021A0000-0x00000000021A9000-memory.dmp

          Filesize

          36KB

        • memory/232-0-0x0000000002180000-0x0000000002195000-memory.dmp

          Filesize

          84KB

        • memory/232-4-0x0000000002180000-0x0000000002195000-memory.dmp

          Filesize

          84KB

        • memory/1412-19-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/1412-17-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2956-3-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2956-6-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2956-2-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/3188-5-0x0000000002200000-0x0000000002216000-memory.dmp

          Filesize

          88KB

        • memory/3188-18-0x0000000002B80000-0x0000000002B96000-memory.dmp

          Filesize

          88KB