Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-en-20210916
  • submitted
    18/09/2021, 05:16

General

  • Target
    b9143f8b866d0f064b6685e9d1db705a.exe
  • Size 239KB
  • Sample210918-fx73qabffl
  • SHA256 3c5232362ea229f9e937a7bb4263a5f1dc2bd3a3a040088901a5a74edf943c7e
  • 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
  • Mix 1592021

C2
  • 93.115.20.139:28978

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 3 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 2 IoCs
  • Creates new service(s) 1 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 12 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets service image path in registry 2 TTPs
  • Checks BIOS information in registry 2 TTPs 8 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 9 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 8 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 4 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
  • Suspicious use of SetThreadContext 5 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 6 IoCs

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

  • Modifies data under HKEY_USERS 16 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of FindShellTrayWindow 12 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b9143f8b866d0f064b6685e9d1db705a.exe
    "C:\Users\Admin\AppData\Local\Temp\b9143f8b866d0f064b6685e9d1db705a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:532
    • C:\Users\Admin\AppData\Local\Temp\b9143f8b866d0f064b6685e9d1db705a.exe
      "C:\Users\Admin\AppData\Local\Temp\b9143f8b866d0f064b6685e9d1db705a.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1372
  • C:\Users\Admin\AppData\Local\Temp\F49A.exe
    C:\Users\Admin\AppData\Local\Temp\F49A.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1508
    • C:\Users\Admin\AppData\Local\Temp\F49A.exe
      C:\Users\Admin\AppData\Local\Temp\F49A.exe
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:340
  • C:\Users\Admin\AppData\Local\Temp\F92D.exe
    C:\Users\Admin\AppData\Local\Temp\F92D.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:568
    • C:\Users\Admin\AppData\Local\Temp\F92D.exe
      C:\Users\Admin\AppData\Local\Temp\F92D.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1472
  • C:\Users\Admin\AppData\Local\Temp\272.exe
    C:\Users\Admin\AppData\Local\Temp\272.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:1748
  • C:\Users\Admin\AppData\Local\Temp\CFD.exe
    C:\Users\Admin\AppData\Local\Temp\CFD.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:844
  • C:\Users\Admin\AppData\Local\Temp\6673.exe
    C:\Users\Admin\AppData\Local\Temp\6673.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:1652
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pmnahnko\
      2⤵
        PID:1680
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wzsayais.exe" C:\Windows\SysWOW64\pmnahnko\
        2⤵
          PID:1604
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create pmnahnko binPath= "C:\Windows\SysWOW64\pmnahnko\wzsayais.exe /d\"C:\Users\Admin\AppData\Local\Temp\6673.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:1036
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description pmnahnko "wifi internet conection"
            2⤵
              PID:1984
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start pmnahnko
              2⤵
                PID:1712
              • 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:600
              • C:\Users\Admin\AppData\Local\Temp\6A6A.exe
                C:\Users\Admin\AppData\Local\Temp\6A6A.exe
                1⤵
                • Executes dropped EXE
                • Adds Run key to start application
                • Suspicious use of AdjustPrivilegeToken
                PID:1340
                • C:\Windows\system32\WerFault.exe
                  C:\Windows\system32\WerFault.exe -u -p 1340 -s 1488
                  2⤵
                  • Program crash
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1260
              • C:\Windows\SysWOW64\pmnahnko\wzsayais.exe
                C:\Windows\SysWOW64\pmnahnko\wzsayais.exe /d"C:\Users\Admin\AppData\Local\Temp\6673.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                PID:1368
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe
                  2⤵
                  • Drops file in System32 directory
                  • Suspicious use of SetThreadContext
                  • Modifies data under HKEY_USERS
                  PID:1612
                  • 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:1384
              • C:\Users\Admin\AppData\Local\Temp\86C1.exe
                C:\Users\Admin\AppData\Local\Temp\86C1.exe
                1⤵
                • Executes dropped EXE
                • Checks BIOS information in registry
                • Checks whether UAC is enabled
                • Suspicious use of NtSetInformationThreadHideFromDebugger
                • Suspicious use of AdjustPrivilegeToken
                PID:2004
              • C:\Users\Admin\AppData\Local\Temp\94E6.exe
                C:\Users\Admin\AppData\Local\Temp\94E6.exe
                1⤵
                • Executes dropped EXE
                • Checks BIOS information in registry
                • Checks whether UAC is enabled
                • Suspicious use of NtSetInformationThreadHideFromDebugger
                • Suspicious use of AdjustPrivilegeToken
                PID:1280
              • C:\Users\Admin\AppData\Local\Temp\992B.exe
                C:\Users\Admin\AppData\Local\Temp\992B.exe
                1⤵
                • Executes dropped EXE
                • Loads dropped DLL
                PID:1652

              Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

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                    Downloads

                    memory/532-56-0x0000000000020000-0x0000000000029000-memory.dmp

                    memory/568-72-0x0000000000B70000-0x0000000000B71000-memory.dmp

                    memory/568-63-0x0000000001110000-0x0000000001111000-memory.dmp

                    memory/844-90-0x0000000001240000-0x0000000001241000-memory.dmp

                    memory/844-92-0x0000000005280000-0x0000000005281000-memory.dmp

                    memory/1248-93-0x0000000003B60000-0x0000000003B75000-memory.dmp

                    memory/1248-57-0x0000000002250000-0x0000000002265000-memory.dmp

                    memory/1260-115-0x000007FEFC401000-0x000007FEFC403000-memory.dmp

                    memory/1260-117-0x0000000000320000-0x0000000000321000-memory.dmp

                    memory/1280-134-0x0000000000EF0000-0x0000000000EF1000-memory.dmp

                    memory/1280-136-0x0000000005320000-0x0000000005321000-memory.dmp

                    memory/1340-104-0x000000001B1E0000-0x000000001B1E2000-memory.dmp

                    memory/1340-99-0x0000000000ED0000-0x0000000000ED1000-memory.dmp

                    memory/1368-122-0x0000000000400000-0x000000000044C000-memory.dmp

                    memory/1372-55-0x0000000075EC1000-0x0000000075EC3000-memory.dmp

                    memory/1372-53-0x0000000000400000-0x0000000000408000-memory.dmp

                    memory/1384-149-0x0000000000160000-0x0000000000251000-memory.dmp

                    memory/1472-85-0x0000000004950000-0x0000000004951000-memory.dmp

                    memory/1472-82-0x0000000000400000-0x0000000000422000-memory.dmp

                    memory/1472-79-0x0000000000400000-0x0000000000422000-memory.dmp

                    memory/1612-119-0x0000000000080000-0x0000000000095000-memory.dmp

                    memory/1652-106-0x0000000000400000-0x000000000044C000-memory.dmp

                    memory/1652-105-0x0000000000020000-0x0000000000033000-memory.dmp

                    memory/1652-140-0x00000000002B0000-0x0000000000340000-memory.dmp

                    memory/1652-141-0x0000000000400000-0x0000000000493000-memory.dmp

                    memory/1748-84-0x00000000054B0000-0x00000000054B1000-memory.dmp

                    memory/1748-77-0x0000000000B30000-0x0000000000B31000-memory.dmp

                    memory/2004-129-0x0000000005960000-0x0000000005961000-memory.dmp

                    memory/2004-127-0x0000000000EC0000-0x0000000000EC1000-memory.dmp