Analysis

  • max time kernel
    252s
  • max time network
    303s
  • platform
    windows10-1703_x64
  • resource
    win10-20231020-en
  • resource tags

    arch:x64arch:x86image:win10-20231020-enlocale:en-usos:windows10-1703-x64system
  • submitted
    19/11/2023, 22:17

General

  • Target

    0a731a60eed64ed8a1b2b5617df6d248b02d8a2c7716f13877a4398293fc9e04.exe

  • Size

    338KB

  • MD5

    cd6e356156ebdd1ab336982ee3033203

  • SHA1

    bf2c44a833f60a5b3d3465d8a0189bdfaa60b851

  • SHA256

    0a731a60eed64ed8a1b2b5617df6d248b02d8a2c7716f13877a4398293fc9e04

  • SHA512

    9f0483e5560a16f80fc3a8f96039a591fa64efad0b5d39fd31e9fa2e617289abe6fc611a9e95dbd85207c24ab0f60c4090a36c117b02fcfe4c0a2c3b8d3aa626

  • SSDEEP

    3072:O9xAA69UJ+xOWELaHcHjmZlWLjv6iBnTDEvpDfqxO2Rer2dbp80C:GuUJRWFciZlWfZTDcpoQr2d3

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\0a731a60eed64ed8a1b2b5617df6d248b02d8a2c7716f13877a4398293fc9e04.exe
    "C:\Users\Admin\AppData\Local\Temp\0a731a60eed64ed8a1b2b5617df6d248b02d8a2c7716f13877a4398293fc9e04.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4308
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wirapgnn\
      2⤵
        PID:2180
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ukkhtfvt.exe" C:\Windows\SysWOW64\wirapgnn\
        2⤵
          PID:4256
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create wirapgnn binPath= "C:\Windows\SysWOW64\wirapgnn\ukkhtfvt.exe /d\"C:\Users\Admin\AppData\Local\Temp\0a731a60eed64ed8a1b2b5617df6d248b02d8a2c7716f13877a4398293fc9e04.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:756
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description wirapgnn "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:4232
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start wirapgnn
          2⤵
          • Launches sc.exe
          PID:760
        • 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:4984
      • C:\Windows\SysWOW64\wirapgnn\ukkhtfvt.exe
        C:\Windows\SysWOW64\wirapgnn\ukkhtfvt.exe /d"C:\Users\Admin\AppData\Local\Temp\0a731a60eed64ed8a1b2b5617df6d248b02d8a2c7716f13877a4398293fc9e04.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1800
        • 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:228
          • 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:3016

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

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

              Filesize

              11.9MB

              MD5

              ea12767bfc2637fba26e61d98b05bd97

              SHA1

              94ad5c614a54ea85a126402ea9f8fed9db8e71fe

              SHA256

              db834befb91ab3bd330467c0c0b42c4c8fd6bd0b2148b6eed5c69b79593709e4

              SHA512

              98d899e37cde2bfc6afadc17776931a837066dcf18395e3c159bb47991dd34d03dbbf83d5ea2ac04004bab07f2f29354744a06fe828f9bdad3365d99fdb75dc2

            • C:\Windows\SysWOW64\wirapgnn\ukkhtfvt.exe

              Filesize

              11.9MB

              MD5

              ea12767bfc2637fba26e61d98b05bd97

              SHA1

              94ad5c614a54ea85a126402ea9f8fed9db8e71fe

              SHA256

              db834befb91ab3bd330467c0c0b42c4c8fd6bd0b2148b6eed5c69b79593709e4

              SHA512

              98d899e37cde2bfc6afadc17776931a837066dcf18395e3c159bb47991dd34d03dbbf83d5ea2ac04004bab07f2f29354744a06fe828f9bdad3365d99fdb75dc2

            • memory/228-43-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-35-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-56-0x0000000008790000-0x0000000008B9B000-memory.dmp

              Filesize

              4.0MB

            • memory/228-75-0x0000000002130000-0x0000000002145000-memory.dmp

              Filesize

              84KB

            • memory/228-42-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-53-0x0000000008790000-0x0000000008B9B000-memory.dmp

              Filesize

              4.0MB

            • memory/228-18-0x0000000002130000-0x0000000002145000-memory.dmp

              Filesize

              84KB

            • memory/228-17-0x0000000002130000-0x0000000002145000-memory.dmp

              Filesize

              84KB

            • memory/228-19-0x0000000002130000-0x0000000002145000-memory.dmp

              Filesize

              84KB

            • memory/228-20-0x0000000002130000-0x0000000002145000-memory.dmp

              Filesize

              84KB

            • memory/228-22-0x0000000004150000-0x000000000435F000-memory.dmp

              Filesize

              2.1MB

            • memory/228-25-0x0000000004150000-0x000000000435F000-memory.dmp

              Filesize

              2.1MB

            • memory/228-26-0x00000000021A0000-0x00000000021A6000-memory.dmp

              Filesize

              24KB

            • memory/228-29-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-32-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-33-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-34-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-57-0x0000000002510000-0x0000000002517000-memory.dmp

              Filesize

              28KB

            • memory/228-36-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-37-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-38-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-39-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-40-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-41-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-52-0x00000000021F0000-0x00000000021F5000-memory.dmp

              Filesize

              20KB

            • memory/228-12-0x0000000002130000-0x0000000002145000-memory.dmp

              Filesize

              84KB

            • memory/228-44-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-45-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-46-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-48-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-47-0x00000000021B0000-0x00000000021C0000-memory.dmp

              Filesize

              64KB

            • memory/228-49-0x00000000021F0000-0x00000000021F5000-memory.dmp

              Filesize

              20KB

            • memory/1800-10-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

              Filesize

              1024KB

            • memory/1800-13-0x0000000000400000-0x000000000089D000-memory.dmp

              Filesize

              4.6MB

            • memory/1800-11-0x0000000000400000-0x000000000089D000-memory.dmp

              Filesize

              4.6MB

            • memory/3016-72-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/3016-71-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/3016-66-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/3016-67-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/3016-68-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/3016-69-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/3016-70-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/3016-61-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/3016-74-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/3016-73-0x0000000002800000-0x00000000028F1000-memory.dmp

              Filesize

              964KB

            • memory/4308-2-0x00000000009D0000-0x00000000009E3000-memory.dmp

              Filesize

              76KB

            • memory/4308-1-0x0000000000C10000-0x0000000000D10000-memory.dmp

              Filesize

              1024KB

            • memory/4308-4-0x0000000000400000-0x000000000089D000-memory.dmp

              Filesize

              4.6MB

            • memory/4308-7-0x0000000000400000-0x000000000089D000-memory.dmp

              Filesize

              4.6MB

            • memory/4308-8-0x00000000009D0000-0x00000000009E3000-memory.dmp

              Filesize

              76KB