Analysis

  • max time kernel
    52s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    17/12/2020, 08:41

General

  • Target
    PO_54023SD_20ft.scr
  • Size 483KB
  • Sample201217-pxnefla652
  • SHA256 1f07d335c0242607b0cd44d673f49e09dc586d20ded980edac3da5d288dc0463
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2019

C2
  • http://emona66.com.kz/nonso/

  • http://emona667.com.kz/nonso2/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Loads dropped DLL 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.

  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO_54023SD_20ft.scr
    "C:\Users\Admin\AppData\Local\Temp\PO_54023SD_20ft.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:884
    • C:\Users\Admin\AppData\Local\Temp\PO_54023SD_20ft.scr
      "{path}"
      2⤵
      • Loads dropped DLL
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:1460

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/884-2-0x0000000074DD0000-0x00000000754BE000-memory.dmp

        memory/884-3-0x0000000000B70000-0x0000000000B71000-memory.dmp

        memory/884-5-0x0000000000830000-0x0000000000834000-memory.dmp

        memory/884-6-0x0000000005B80000-0x0000000005BF2000-memory.dmp

        memory/1460-7-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/1460-10-0x0000000000170000-0x0000000000186000-memory.dmp

        memory/1460-11-0x00000000000B0000-0x00000000000B1000-memory.dmp