Overview

overview

10

Static

static

mdnf94po.exe

windows7_x64

10

mdnf94po.exe

windows10_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    10-03-2021 16:19

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General

  • Target

    mdnf94po.exe

  • Size

    172KB

  • MD5

    99a04fd1d73dfd29fd37a6cacb738c1b

  • SHA1

    b9ea169c2cd0afb95a2005741e68d4d312eac7ef

  • SHA256

    4ad0e4bc848ce3f835cdb8ef61f9c7ef4f80ca75e65032f0437e4a5abb8f59e3

  • SHA512

    dbda2cc1838297fa4b58b0f899f32912507e3b9d7570a450900eca3f223f149fb0867c962ab1a3730518d1075736464242056ba566287eb5ba585e39342a13f0

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 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

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

  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\mdnf94po.exe
    "C:\Users\Admin\AppData\Local\Temp\mdnf94po.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1056
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gcknwpgv\
      2⤵
        PID:1708
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zeojdpmo.exe" C:\Windows\SysWOW64\gcknwpgv\
        2⤵
          PID:1524
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create gcknwpgv binPath= "C:\Windows\SysWOW64\gcknwpgv\zeojdpmo.exe /d\"C:\Users\Admin\AppData\Local\Temp\mdnf94po.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:1584
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description gcknwpgv "wifi internet conection"
            2⤵
              PID:1340
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start gcknwpgv
              2⤵
                PID:468
              • 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:1004
              • C:\Windows\SysWOW64\gcknwpgv\zeojdpmo.exe
                C:\Windows\SysWOW64\gcknwpgv\zeojdpmo.exe /d"C:\Users\Admin\AppData\Local\Temp\mdnf94po.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:364
                • 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:1548
                  • 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:604

              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

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              Downloads

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

                f77d5ff055b429cdce1b0575f9908e45

                SHA1

                104715a6fb0d3899bcf46b60dacb24c93d25ca9c

                SHA256

                952ced371f3ef615edf712bb5386293eeda5b32139342e4ebb9e502c06cb688d

                SHA512

                884fc7f88a747116d2c5fa5096bdc427d5ceac40ce5f8b5573158869d29f8ff020ffdddc8358d56ccf2ab39be283dd109d9ccec5d3c4dbf5e4e317184b764616

                Download Submit
              • C:\Windows\SysWOW64\gcknwpgv\zeojdpmo.exe
                MD5

                f77d5ff055b429cdce1b0575f9908e45

                SHA1

                104715a6fb0d3899bcf46b60dacb24c93d25ca9c

                SHA256

                952ced371f3ef615edf712bb5386293eeda5b32139342e4ebb9e502c06cb688d

                SHA512

                884fc7f88a747116d2c5fa5096bdc427d5ceac40ce5f8b5573158869d29f8ff020ffdddc8358d56ccf2ab39be283dd109d9ccec5d3c4dbf5e4e317184b764616

                Download Submit
              • memory/364-21-0x0000000000400000-0x0000000000415000-memory.dmp
                Filesize

                84KB

                Download
              • memory/364-15-0x00000000030E0000-0x00000000030F1000-memory.dmp
                Filesize

                68KB

                Download
              • memory/468-11-0x0000000000000000-mapping.dmp
                Download
              • memory/604-28-0x000000000015259C-mapping.dmp
                Download
              • memory/604-26-0x00000000000C0000-0x00000000001B1000-memory.dmp
                Filesize

                964KB

                Download
              • memory/1004-13-0x0000000000000000-mapping.dmp
                Download
              • memory/1056-2-0x0000000002D50000-0x0000000002D61000-memory.dmp
                Filesize

                68KB

                Download
              • memory/1056-4-0x0000000000020000-0x0000000000033000-memory.dmp
                Filesize

                76KB

                Download
              • memory/1056-6-0x0000000000400000-0x0000000000415000-memory.dmp
                Filesize

                84KB

                Download
              • memory/1056-3-0x0000000075A61000-0x0000000075A63000-memory.dmp
                Filesize

                8KB

                Download
              • memory/1340-10-0x0000000000000000-mapping.dmp
                Download
              • memory/1524-7-0x0000000000000000-mapping.dmp
                Download
              • memory/1548-24-0x0000000000110000-0x0000000000116000-memory.dmp
                Filesize

                24KB

                Download
              • memory/1548-22-0x0000000000080000-0x0000000000095000-memory.dmp
                Filesize

                84KB

                Download
              • memory/1548-23-0x0000000001C60000-0x0000000001E6F000-memory.dmp
                Filesize

                2.1MB

                Download
              • memory/1548-19-0x0000000000089A6B-mapping.dmp
                Download
              • memory/1548-25-0x00000000001D0000-0x00000000001E0000-memory.dmp
                Filesize

                64KB

                Download
              • memory/1548-18-0x0000000000080000-0x0000000000095000-memory.dmp
                Filesize

                84KB

                Download
              • memory/1584-9-0x0000000000000000-mapping.dmp
                Download
              • memory/1708-5-0x0000000000000000-mapping.dmp
                Download