Resubmissions

19-01-2021 19:24

210119-s26yznnqsn 10

19-11-2020 13:14

201119-s41ec6lt86 10

Analysis

  • max time kernel
    1696s
  • max time network
    1697s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    19-11-2020 13:14

General

  • Target

    2019-09-02_22-41-10.exe

Malware Config

Extracted

Family

smokeloader

Version

2019

C2

http://advertserv25.world/logstatx77/

http://mailstatm74.club/logstatx77/

http://kxservx7zx.club/logstatx77/

http://dsmail977sx.xyz/logstatx77/

http://fdmail709.club/logstatx77/

http://servicestar751.club/logstatx77/

http://staradvert9075.club/logstatx77/

http://staradvert1883.club/logstatx77/

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 ⋅ 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2019-09-02_22-41-10.exe
    "C:\Users\Admin\AppData\Local\Temp\2019-09-02_22-41-10.exe"
    Suspicious use of SetThreadContext
    Suspicious use of WriteProcessMemory
    PID:1404
    • C:\Users\Admin\AppData\Local\Temp\2019-09-02_22-41-10.exe
      "C:\Users\Admin\AppData\Local\Temp\2019-09-02_22-41-10.exe"
      Loads dropped DLL
      Checks SCSI registry key(s)
      Suspicious behavior: MapViewOfSection
      PID:3532

Network

MITRE ATT&CK Matrix

Collection

    Command and Control

      Credential Access

        Defense Evasion

          Execution

            Exfiltration

              Impact

                Initial Access

                  Lateral Movement

                    Persistence

                      Privilege Escalation

                        Replay Monitor

                        00:00 00:00

                        Downloads

                        • \Users\Admin\AppData\Local\Temp\D47F.tmp
                        • memory/1404-0-0x0000000000BD6000-0x0000000000BE8000-memory.dmp
                        • memory/1404-1-0x0000000000F90000-0x0000000000F91000-memory.dmp
                        • memory/3024-6-0x0000000000850000-0x0000000000851000-memory.dmp
                        • memory/3532-2-0x0000000000400000-0x000000000040A000-memory.dmp
                        • memory/3532-3-0x0000000000402CED-mapping.dmp
                        • memory/3532-5-0x0000000002050000-0x0000000002066000-memory.dmp