Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows10-1703_x64
  • resource
    win10-20220722-en
  • resource tags

    arch:x64arch:x86image:win10-20220722-enlocale:en-usos:windows10-1703-x64system
  • submitted
    08-08-2022 19:38

General

  • Target

    3728e0bb98df94d8806e0290e9aebd2e61fd32b418858dc3b13792b6c1798fb8.exe

  • Size

    279KB

  • MD5

    d273478c221b76f18b588298b3678155

  • SHA1

    5825e3a95c4596414d321834b39f228221fed389

  • SHA256

    3728e0bb98df94d8806e0290e9aebd2e61fd32b418858dc3b13792b6c1798fb8

  • SHA512

    bfeea9d43d5cebec74e2e56b4065f67952eab95ce9db819386c6f643fea4eb4603a772804abbf4d167b3c47fdfd8d6dc94bf047977f76a710d21887bcba3bb69

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 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3728e0bb98df94d8806e0290e9aebd2e61fd32b418858dc3b13792b6c1798fb8.exe
    "C:\Users\Admin\AppData\Local\Temp\3728e0bb98df94d8806e0290e9aebd2e61fd32b418858dc3b13792b6c1798fb8.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2256
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pfgowcpo\
      2⤵
        PID:4900
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\galnaucb.exe" C:\Windows\SysWOW64\pfgowcpo\
        2⤵
          PID:4328
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create pfgowcpo binPath= "C:\Windows\SysWOW64\pfgowcpo\galnaucb.exe /d\"C:\Users\Admin\AppData\Local\Temp\3728e0bb98df94d8806e0290e9aebd2e61fd32b418858dc3b13792b6c1798fb8.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2016
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description pfgowcpo "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1592
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start pfgowcpo
          2⤵
          • Launches sc.exe
          PID:4992
        • 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:4276
      • C:\Windows\SysWOW64\pfgowcpo\galnaucb.exe
        C:\Windows\SysWOW64\pfgowcpo\galnaucb.exe /d"C:\Users\Admin\AppData\Local\Temp\3728e0bb98df94d8806e0290e9aebd2e61fd32b418858dc3b13792b6c1798fb8.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4380
        • 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:5004
          • 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:3472

      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\galnaucb.exe
        Filesize

        10.4MB

        MD5

        aad0a4343329c6f9b217e6750429ea3c

        SHA1

        3d8e3880cde5373b2f83fc7065e6faa49073bc9a

        SHA256

        d1cdbcc2a06772e93061ca635c122a48b93055f5043e68225aa76bf72ba9690b

        SHA512

        844ec35ad8db1becc400714d32db29c1e8956605ae24d6d0ec8744fd5b2787e83ba91ca62e683506ab5a20d38ea2323bc5c35a3e3490bd4070f38252090b8190

      • C:\Windows\SysWOW64\pfgowcpo\galnaucb.exe
        Filesize

        10.4MB

        MD5

        aad0a4343329c6f9b217e6750429ea3c

        SHA1

        3d8e3880cde5373b2f83fc7065e6faa49073bc9a

        SHA256

        d1cdbcc2a06772e93061ca635c122a48b93055f5043e68225aa76bf72ba9690b

        SHA512

        844ec35ad8db1becc400714d32db29c1e8956605ae24d6d0ec8744fd5b2787e83ba91ca62e683506ab5a20d38ea2323bc5c35a3e3490bd4070f38252090b8190

      • memory/1592-198-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/1592-197-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/1592-196-0x0000000000000000-mapping.dmp
      • memory/2016-190-0x0000000000000000-mapping.dmp
      • memory/2016-199-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2016-195-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2016-193-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2016-194-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2016-192-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-168-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-174-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-140-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-141-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-142-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-143-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-145-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-144-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-146-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-147-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-148-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-150-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-151-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-152-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-153-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-154-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-155-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-156-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-157-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-158-0x00000000004F0000-0x000000000063A000-memory.dmp
        Filesize

        1.3MB

      • memory/2256-159-0x0000000002170000-0x0000000002183000-memory.dmp
        Filesize

        76KB

      • memory/2256-160-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-161-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-162-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-163-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-164-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-165-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-166-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-167-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-127-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-169-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-170-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-171-0x0000000000400000-0x000000000045E000-memory.dmp
        Filesize

        376KB

      • memory/2256-172-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-173-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-139-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-175-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-176-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-177-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-235-0x0000000000400000-0x000000000045E000-memory.dmp
        Filesize

        376KB

      • memory/2256-232-0x0000000002170000-0x0000000002183000-memory.dmp
        Filesize

        76KB

      • memory/2256-128-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-129-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-130-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-131-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-132-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-138-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-137-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-136-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-135-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-134-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/2256-133-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/3472-520-0x000000000329259C-mapping.dmp
      • memory/4276-229-0x0000000000000000-mapping.dmp
      • memory/4328-186-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/4328-188-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/4328-187-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/4328-189-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/4328-184-0x0000000000000000-mapping.dmp
      • memory/4328-185-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/4380-304-0x0000000000714000-0x0000000000725000-memory.dmp
        Filesize

        68KB

      • memory/4380-307-0x0000000000400000-0x000000000045E000-memory.dmp
        Filesize

        376KB

      • memory/4900-183-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/4900-182-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/4900-181-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/4900-180-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/4900-179-0x00000000774A0000-0x000000007762E000-memory.dmp
        Filesize

        1.6MB

      • memory/4900-178-0x0000000000000000-mapping.dmp
      • memory/4992-207-0x0000000000000000-mapping.dmp
      • memory/5004-299-0x0000000003249A6B-mapping.dmp
      • memory/5004-365-0x0000000003240000-0x0000000003255000-memory.dmp
        Filesize

        84KB

      • memory/5004-494-0x0000000003240000-0x0000000003255000-memory.dmp
        Filesize

        84KB