Analysis

  • max time kernel
    150s
  • max time network
    141s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    11/11/2020, 16:34

General

  • Target
    725cb3e7703c08cd0b8ca25b42fe41eb.exe
  • Size 281KB
  • Sample201111-dapwvdrzca
  • SHA256 f57ecede28fa0147d09d5a29bb1868b266b3dc6684f82418822186dc829cc886
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://smk10ddde.com/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Program crash 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 2585 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 13 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\725cb3e7703c08cd0b8ca25b42fe41eb.exe
    "C:\Users\Admin\AppData\Local\Temp\725cb3e7703c08cd0b8ca25b42fe41eb.exe"
    1⤵
    • Loads dropped DLL
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:1112
  • C:\Users\Admin\AppData\Roaming\vbsdgss
    C:\Users\Admin\AppData\Roaming\vbsdgss
    1⤵
    • Executes dropped EXE
    PID:2256
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 480
      2⤵
      • Suspicious use of NtCreateProcessExOtherParentProcess
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:3408

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1112-0-0x0000000000A00000-0x0000000000A01000-memory.dmp

        memory/2256-5-0x0000000000A30000-0x0000000000A31000-memory.dmp

        memory/2396-2-0x0000000001040000-0x0000000001055000-memory.dmp

        memory/3408-56-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-52-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-10-0x0000000004FA0000-0x0000000004FA1000-memory.dmp

        memory/3408-31-0x0000000005100000-0x0000000005101000-memory.dmp

        memory/3408-33-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-34-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-37-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-43-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-53-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-60-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-59-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-58-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-57-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-7-0x00000000046E0000-0x00000000046E1000-memory.dmp

        memory/3408-55-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-30-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-54-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-8-0x00000000046E0000-0x00000000046E1000-memory.dmp

        memory/3408-51-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-50-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-49-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-48-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-47-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-46-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-45-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-44-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-42-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-41-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-40-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-39-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-38-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-36-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-35-0x0000000001260000-0x0000000001261000-memory.dmp

        memory/3408-32-0x0000000001260000-0x0000000001261000-memory.dmp