Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/04/2023, 02:08

General

  • Target

    setup.exe

  • Size

    250KB

  • MD5

    933dc3211d2dd2a883c823ee0ee66b0c

  • SHA1

    35b71cbb5f192b9affa65e99417732e523956bce

  • SHA256

    60b07a445998f1d5e90714ac1404b306cfdc9aa1be2d8616595a9e696d15a639

  • SHA512

    716525fea8437cf9b35107139a791b39486eea8143cfd20420ef823da55261afe096c54b819940d11f0bcb51d1e233d64c1bdc1c7d5ea80c15c5f8f5de1ed791

  • SSDEEP

    3072:bReS2RFEzt8XRqvRRWRO9Z1VAD4dv79ttFY5UVPIwOySHpxw1E0a+v:p2RuyRqh3ZLFYu1IwuMWw

Malware Config

Extracted

Family

smokeloader

Botnet

lab

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\setup.exe
    "C:\Users\Admin\AppData\Local\Temp\setup.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4568
    • C:\Users\Admin\AppData\Local\Temp\setup.exe
      "C:\Users\Admin\AppData\Local\Temp\setup.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2228
  • C:\Users\Admin\AppData\Roaming\tutehas
    C:\Users\Admin\AppData\Roaming\tutehas
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1492
    • C:\Users\Admin\AppData\Roaming\tutehas
      C:\Users\Admin\AppData\Roaming\tutehas
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:3992

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    250KB

    MD5

    933dc3211d2dd2a883c823ee0ee66b0c

    SHA1

    35b71cbb5f192b9affa65e99417732e523956bce

    SHA256

    60b07a445998f1d5e90714ac1404b306cfdc9aa1be2d8616595a9e696d15a639

    SHA512

    716525fea8437cf9b35107139a791b39486eea8143cfd20420ef823da55261afe096c54b819940d11f0bcb51d1e233d64c1bdc1c7d5ea80c15c5f8f5de1ed791

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

    Filesize

    250KB

    MD5

    933dc3211d2dd2a883c823ee0ee66b0c

    SHA1

    35b71cbb5f192b9affa65e99417732e523956bce

    SHA256

    60b07a445998f1d5e90714ac1404b306cfdc9aa1be2d8616595a9e696d15a639

    SHA512

    716525fea8437cf9b35107139a791b39486eea8143cfd20420ef823da55261afe096c54b819940d11f0bcb51d1e233d64c1bdc1c7d5ea80c15c5f8f5de1ed791

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

    Filesize

    250KB

    MD5

    933dc3211d2dd2a883c823ee0ee66b0c

    SHA1

    35b71cbb5f192b9affa65e99417732e523956bce

    SHA256

    60b07a445998f1d5e90714ac1404b306cfdc9aa1be2d8616595a9e696d15a639

    SHA512

    716525fea8437cf9b35107139a791b39486eea8143cfd20420ef823da55261afe096c54b819940d11f0bcb51d1e233d64c1bdc1c7d5ea80c15c5f8f5de1ed791

  • memory/2228-134-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/2228-136-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/2228-138-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/3120-137-0x0000000000F00000-0x0000000000F16000-memory.dmp

    Filesize

    88KB

  • memory/3120-150-0x0000000002DC0000-0x0000000002DD6000-memory.dmp

    Filesize

    88KB

  • memory/3992-149-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/3992-151-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/4568-135-0x00000000001F0000-0x00000000001F9000-memory.dmp

    Filesize

    36KB