Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    12/11/2020, 09:22

General

  • Target
    d02a5551e929cd14fdb8db635659f433.exe
  • Size 326KB
  • Sample201112-7apkeweb16
  • SHA256 8f32a2bc4817137939fbd615fbcbab4c93dd0305e9d407ec6de706483c50556e
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://we11wdsgd.com/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 557 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d02a5551e929cd14fdb8db635659f433.exe
    "C:\Users\Admin\AppData\Local\Temp\d02a5551e929cd14fdb8db635659f433.exe"
    1⤵
    • Loads dropped DLL
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:1904
  • C:\Users\Admin\AppData\Local\Temp\7687.exe
    C:\Users\Admin\AppData\Local\Temp\7687.exe
    1⤵
    • Executes dropped EXE
    PID:788
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
      PID:1064

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/1064-7-0x0000000000130000-0x00000000001A5000-memory.dmp

          memory/1064-6-0x00000000000C0000-0x000000000012B000-memory.dmp

          memory/1304-2-0x0000000001D20000-0x0000000001D35000-memory.dmp

          memory/1904-0-0x00000000008D0000-0x00000000008E1000-memory.dmp