Analysis

  • max time kernel
    300s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    20/07/2023, 03:37

General

  • Target

    73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe

  • Size

    248KB

  • MD5

    932d72dbb9e47863813fde96f1b80bcc

  • SHA1

    f945ba7966a0fa0f006850b76252c8bc8e13d83e

  • SHA256

    73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606

  • SHA512

    150b8fc8ba92d008dd80d1328947dec6fb7df09d02eac43e84bd66f0b4f5035d094838ac8f73cdae33ddb7d9a87b9336bef8d3499842ca71e68f60daf0df5dd6

  • SSDEEP

    3072:t6dPRwnF4nmpagIKt+H11uEld44gNW6o25q0vMQU5:tI5wnF4nmpeKt8uqvgNW6oQq0

Malware Config

Extracted

Family

smokeloader

Botnet

up3

Extracted

Family

smokeloader

Version

2020

C2

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe
    "C:\Users\Admin\AppData\Local\Temp\73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2040
    • C:\Users\Admin\AppData\Local\Temp\73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe
      "C:\Users\Admin\AppData\Local\Temp\73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2404
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {913D7B3C-F438-4205-82E0-73F10BC71D4E} S-1-5-21-2969888527-3102471180-2307688834-1000:YKQDESCX\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2240
    • C:\Users\Admin\AppData\Roaming\fwjrdai
      C:\Users\Admin\AppData\Roaming\fwjrdai
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:308
      • C:\Users\Admin\AppData\Roaming\fwjrdai
        C:\Users\Admin\AppData\Roaming\fwjrdai
        3⤵
        • Executes dropped EXE
        • Checks SCSI registry key(s)
        • Suspicious behavior: MapViewOfSection
        PID:2808

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\fwjrdai

    Filesize

    248KB

    MD5

    932d72dbb9e47863813fde96f1b80bcc

    SHA1

    f945ba7966a0fa0f006850b76252c8bc8e13d83e

    SHA256

    73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606

    SHA512

    150b8fc8ba92d008dd80d1328947dec6fb7df09d02eac43e84bd66f0b4f5035d094838ac8f73cdae33ddb7d9a87b9336bef8d3499842ca71e68f60daf0df5dd6

  • C:\Users\Admin\AppData\Roaming\fwjrdai

    Filesize

    248KB

    MD5

    932d72dbb9e47863813fde96f1b80bcc

    SHA1

    f945ba7966a0fa0f006850b76252c8bc8e13d83e

    SHA256

    73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606

    SHA512

    150b8fc8ba92d008dd80d1328947dec6fb7df09d02eac43e84bd66f0b4f5035d094838ac8f73cdae33ddb7d9a87b9336bef8d3499842ca71e68f60daf0df5dd6

  • C:\Users\Admin\AppData\Roaming\fwjrdai

    Filesize

    248KB

    MD5

    932d72dbb9e47863813fde96f1b80bcc

    SHA1

    f945ba7966a0fa0f006850b76252c8bc8e13d83e

    SHA256

    73b174c6316230888f3cef2a93ac3f4ba3d35897fa82181cd83beceda6fa7606

    SHA512

    150b8fc8ba92d008dd80d1328947dec6fb7df09d02eac43e84bd66f0b4f5035d094838ac8f73cdae33ddb7d9a87b9336bef8d3499842ca71e68f60daf0df5dd6

  • memory/308-77-0x0000000002CF0000-0x0000000002DF0000-memory.dmp

    Filesize

    1024KB

  • memory/1176-70-0x000007FEF5CB0000-0x000007FEF5DF3000-memory.dmp

    Filesize

    1.3MB

  • memory/1176-71-0x000007FE7BB80000-0x000007FE7BB8A000-memory.dmp

    Filesize

    40KB

  • memory/1176-62-0x0000000002A50000-0x0000000002A66000-memory.dmp

    Filesize

    88KB

  • memory/1176-82-0x0000000002BE0000-0x0000000002BF6000-memory.dmp

    Filesize

    88KB

  • memory/1176-72-0x000007FEF5CB0000-0x000007FEF5DF3000-memory.dmp

    Filesize

    1.3MB

  • memory/2040-56-0x0000000000220000-0x0000000000229000-memory.dmp

    Filesize

    36KB

  • memory/2040-55-0x0000000002C00000-0x0000000002D00000-memory.dmp

    Filesize

    1024KB

  • memory/2404-60-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/2404-59-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/2404-57-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2404-61-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/2404-63-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/2808-81-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/2808-83-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB