Resubmissions

24/01/2022, 15:55

220124-tcsn7afch210

11/10/2021, 17:18

211011-vvdteshga610

Analysis

  • max time kernel
    102s
  • max time network
    96s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    24/01/2022, 15:55

General

  • Target
    c10ebeb0d29119a2a7177f857318d012.exe
  • Size 337KB
  • Sample220124-tcsn7afch2
  • SHA256 4eb02a90be27af84c49a2f62da8e179e5117d82db4e25c7a2c80e2954583bdb3
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://linavanandr11.club/

  • http://iselaharty12.club/

  • http://giovaninardo13.club/

  • http://zayneliann14.club/

  • http://zorinosali15.club/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 9 IoCs
  • Checks SCSI registry key(s) 3 TTPs 13 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c10ebeb0d29119a2a7177f857318d012.exe
    "C:\Users\Admin\AppData\Local\Temp\c10ebeb0d29119a2a7177f857318d012.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3536
    • C:\Users\Admin\AppData\Local\Temp\c10ebeb0d29119a2a7177f857318d012.exe
      "C:\Users\Admin\AppData\Local\Temp\c10ebeb0d29119a2a7177f857318d012.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:3308
  • C:\Windows\ImmersiveControlPanel\SystemSettings.exe
    "C:\Windows\ImmersiveControlPanel\SystemSettings.exe" -ServerName:microsoft.windows.immersivecontrolpanel
    1⤵
    • Drops file in Windows directory
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:1952
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Drops file in Windows directory
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2648
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Drops file in Windows directory
    • Checks SCSI registry key(s)
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1136

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3036-122-0x0000000000A20000-0x0000000000A36000-memory.dmp

        memory/3308-119-0x0000000000400000-0x0000000000409000-memory.dmp

        memory/3308-121-0x0000000000400000-0x0000000000409000-memory.dmp

        memory/3536-118-0x0000000001970000-0x0000000001998000-memory.dmp

        memory/3536-120-0x00000000017F0000-0x00000000017F9000-memory.dmp