Analysis

  • max time kernel
    152s
  • max time network
    120s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    09/10/2021, 08:10

General

  • Target
    47f955ee34de5970aeaec19d3f512c66.exe
  • Size 355KB
  • Sample211009-j2p99afbb3
  • SHA256 746cfbc5680b908b13b7c7f8bcc8b59f0d7da8ce86ac5c12bb616889fdcfe291
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://fazanaharahe10.top/

  • http://xandelissane20.top/

  • http://ustiassosale30.top/

  • http://cytheriata40.top/

  • http://ggiergionard50.top/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 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: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\47f955ee34de5970aeaec19d3f512c66.exe
    "C:\Users\Admin\AppData\Local\Temp\47f955ee34de5970aeaec19d3f512c66.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3512
    • C:\Users\Admin\AppData\Local\Temp\47f955ee34de5970aeaec19d3f512c66.exe
      "C:\Users\Admin\AppData\Local\Temp\47f955ee34de5970aeaec19d3f512c66.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:4244

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/2712-119-0x00000000003C0000-0x00000000003D6000-memory.dmp

        memory/3512-115-0x00000000019B9000-0x00000000019C9000-memory.dmp

        memory/3512-118-0x0000000001900000-0x0000000001909000-memory.dmp

        memory/4244-116-0x0000000000400000-0x0000000000409000-memory.dmp