Overview

overview

10

Static

static

a645affb4d...9b.exe

windows7_x64

10

a645affb4d...9b.exe

windows10_x64

Analysis

  • max time kernel
    149s
  • max time network
    197s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    24-05-2021 01:02

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General

  • Target

    a645affb4d4d35477f4eb8b572b85e9b.exe

  • Size

    3.8MB

  • MD5

    a645affb4d4d35477f4eb8b572b85e9b

  • SHA1

    41b6fc892fa01ae136ca68c321a20713ed0bf774

  • SHA256

    e6e11a92390d1e01775514d1a4f047f5b94471070a07bf82b6e9fe5c547d55a8

  • SHA512

    cdf00d8c0ea39e10cdcb3ba8c88146de164cad0a29218c77b2af9e68f1510c2f73b332e02ed0e9f8fa6356ded3abb732aa3d3f0a842fd70e0e7ba99d80dd7870

Score
10/10
smokeloadersocelarsbackdoordiscoveryevasionspywarestealertrojanupxvmprotect

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://khaleelahmed.com/upload/

http://twvickiassociation.com/upload/

http://www20833.com/upload/

http://cocinasintonterias.com/upload/

http://masaofukunaga.com/upload/

http://gnckids.com/upload/
rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

    trojanbackdoorsmokeloader
  • Socelars

    Socelars is an infostealer targeting browser cookies and credit card credentials.

    stealersocelars
  • Socelars Payload 5 IoCs
  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Executes dropped EXE 11 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • VMProtect packed file 11 IoCs

    Detects executables packed with VMProtect commercial packer.

    vmprotect
  • Loads dropped DLL 46 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
    evasiontrojan
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • autoit_exe 6 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Kills process with taskkill 1 IoCs
    evasion
  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
    adwarespyware
  • Modifies registry class 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 15 IoCs
  • Suspicious use of SendNotifyMessage 11 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\services.exe
    C:\Windows\system32\services.exe
    1⤵
      PID:460
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k netsvcs
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Drops file in System32 directory
        • Suspicious use of SetThreadContext
        • Drops file in Windows directory
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:876
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k SystemNetworkService
        2⤵
        • Modifies registry class
        PID:2344
    • C:\Users\Admin\AppData\Local\Temp\a645affb4d4d35477f4eb8b572b85e9b.exe
      "C:\Users\Admin\AppData\Local\Temp\a645affb4d4d35477f4eb8b572b85e9b.exe"
      1⤵
      • Loads dropped DLL
      • Checks whether UAC is enabled
      • Suspicious use of WriteProcessMemory
      PID:1984
      • C:\Users\Admin\AppData\Local\Temp\KRSetp.exe
        "C:\Users\Admin\AppData\Local\Temp\KRSetp.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:1760
      • C:\Users\Admin\AppData\Local\Temp\agdsk.exe
        "C:\Users\Admin\AppData\Local\Temp\agdsk.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:564
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /c taskkill /f /im chrome.exe
          3⤵
            PID:2700
            • C:\Windows\SysWOW64\taskkill.exe
              taskkill /f /im chrome.exe
              4⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:2728
        • C:\Users\Admin\AppData\Local\Temp\jg3_3uag.exe
          "C:\Users\Admin\AppData\Local\Temp\jg3_3uag.exe"
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1536
          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\jg3_3uag.exe
            "C:\Users\Admin\AppData\Local\Temp\RarSFX0\jg3_3uag.exe"
            3⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1068
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1068 -s 192
              4⤵
              • Loads dropped DLL
              • Program crash
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of AdjustPrivilegeToken
              PID:2240
        • C:\Users\Admin\AppData\Local\Temp\Files.exe
          "C:\Users\Admin\AppData\Local\Temp\Files.exe"
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks whether UAC is enabled
          • Suspicious use of WriteProcessMemory
          PID:1840
          • C:\Users\Admin\AppData\Local\Temp\RarSFX1\File.exe
            "C:\Users\Admin\AppData\Local\Temp\RarSFX1\File.exe"
            3⤵
            • Executes dropped EXE
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:1796
        • C:\Users\Admin\AppData\Local\Temp\wf-game.exe
          "C:\Users\Admin\AppData\Local\Temp\wf-game.exe"
          2⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:944
          • C:\Windows\SysWOW64\rUNdlL32.eXe
            "C:\Windows\system32\rUNdlL32.eXe" "C:\Users\Admin\AppData\Local\Temp\install.dll",getname
            3⤵
            • Loads dropped DLL
            • Modifies registry class
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2280
        • C:\Users\Admin\AppData\Local\Temp\pzyh.exe
          "C:\Users\Admin\AppData\Local\Temp\pzyh.exe"
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:752
          • C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe
            C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe /scookiestxt C:\Users\Admin\AppData\Local\Temp\fj4ghga23_fsa.txt
            3⤵
            • Executes dropped EXE
            PID:2504
          • C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe
            C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe /scookiestxt C:\Users\Admin\AppData\Local\Temp\fj4ghga23_fsa.txt
            3⤵
            • Executes dropped EXE
            PID:2924
        • C:\Users\Admin\AppData\Local\Temp\pub2.exe
          "C:\Users\Admin\AppData\Local\Temp\pub2.exe"
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks SCSI registry key(s)
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          PID:904
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
        1⤵
        • Modifies Internet Explorer settings
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1892
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1892 CREDAT:275457 /prefetch:2
          2⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:824
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1892 CREDAT:275463 /prefetch:2
          2⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:2564

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • memory/876-152-0x0000000001390000-0x0000000001400000-memory.dmp

        Filesize

        448KB

        Download

      • memory/876-151-0x00000000007D0000-0x000000000081B000-memory.dmp

        Filesize

        300KB

        Download

      • memory/904-157-0x0000000000220000-0x0000000000229000-memory.dmp

        Filesize

        36KB

        Download

      • memory/904-158-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download

      • memory/1068-131-0x0000000000400000-0x00000000005DE000-memory.dmp

        Filesize

        1.9MB

        Download

      • memory/1224-159-0x0000000002B80000-0x0000000002B96000-memory.dmp

        Filesize

        88KB

        Download

      • memory/1760-67-0x00000000011C0000-0x00000000011C1000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1760-70-0x0000000000150000-0x0000000000170000-memory.dmp

        Filesize

        128KB

        Download

      • memory/1760-71-0x0000000000170000-0x0000000000171000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1760-72-0x0000000000390000-0x0000000000392000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1760-69-0x0000000000140000-0x0000000000141000-memory.dmp

        Filesize

        4KB

        Download

      • memory/1984-59-0x00000000767B1000-0x00000000767B3000-memory.dmp

        Filesize

        8KB

        Download

      • memory/2240-148-0x0000000000460000-0x0000000000461000-memory.dmp

        Filesize

        4KB

        Download

      • memory/2280-150-0x00000000003C0000-0x000000000041C000-memory.dmp

        Filesize

        368KB

        Download

      • memory/2280-149-0x0000000001F00000-0x0000000002001000-memory.dmp

        Filesize

        1.0MB

        Download

      • memory/2280-147-0x0000000010000000-0x0000000010002000-memory.dmp

        Filesize

        8KB

        Download

      • memory/2344-154-0x0000000000250000-0x00000000002C0000-memory.dmp

        Filesize

        448KB

        Download