Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    07/12/2021, 23:47

General

  • Target

    a4822c960055c8c34fcc130bae6f0d86.exe

  • Size

    319KB

  • MD5

    a4822c960055c8c34fcc130bae6f0d86

  • SHA1

    bd5f62284b8c1c905a72b3c7f66240a4704e1bfa

  • SHA256

    f6401919fd20e698ec964ca0df4eee18c1f13852eef32a9246fe4605cff79969

  • SHA512

    7bb794fddd9d43483ddf17d4d1a8957db6044d4d4d8271f3c3631b416c0bb788e61ddb2a8a0ea16bbe3d0baa416534b4e8e475628e38bb08922c62f4cae45061

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://host-data-coin-11.com/

http://file-coin-host-12.com/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • 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 FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a4822c960055c8c34fcc130bae6f0d86.exe
    "C:\Users\Admin\AppData\Local\Temp\a4822c960055c8c34fcc130bae6f0d86.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1916
    • C:\Users\Admin\AppData\Local\Temp\a4822c960055c8c34fcc130bae6f0d86.exe
      "C:\Users\Admin\AppData\Local\Temp\a4822c960055c8c34fcc130bae6f0d86.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2040
  • C:\Users\Admin\AppData\Local\Temp\453A.exe
    C:\Users\Admin\AppData\Local\Temp\453A.exe
    1⤵
    • Executes dropped EXE
    PID:1124

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1276-60-0x0000000002A80000-0x0000000002A96000-memory.dmp

          Filesize

          88KB

        • memory/1916-55-0x0000000000308000-0x0000000000319000-memory.dmp

          Filesize

          68KB

        • memory/1916-59-0x0000000000020000-0x0000000000029000-memory.dmp

          Filesize

          36KB

        • memory/2040-56-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2040-58-0x0000000075D41000-0x0000000075D43000-memory.dmp

          Filesize

          8KB