Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 20:43

General

  • Target

    36fb50e4d657b0c654aab8d18dfcca10_NeikiAnalytics.exe

  • Size

    191KB

  • MD5

    36fb50e4d657b0c654aab8d18dfcca10

  • SHA1

    6290da591b1634259a2cd6d224b8094ad61e0c8c

  • SHA256

    3bd7a3296a2811abdb7ef992187f3c464d04b4b40099760144c81409bda6560f

  • SHA512

    32fedf79584d9f85b224e02fba6503effc94666ca488abe5528943f8970b2dda1464f464930c0ff1d625e5e15840e5fc28bd1c117b8087d621183a6dc59f8907

  • SSDEEP

    3072:XWWzVBseRlCZ8R0202ye2B+nNpD55vAp2bq/:XWmyClCZ8R0JPBwop2q

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Creates new service(s) 2 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 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).

  • Program crash 2 IoCs
  • Modifies data under HKEY_USERS 6 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\36fb50e4d657b0c654aab8d18dfcca10_NeikiAnalytics.exe
    "C:\Users\Admin\AppData\Local\Temp\36fb50e4d657b0c654aab8d18dfcca10_NeikiAnalytics.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4692
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iaflcmjx\
      2⤵
        PID:3044
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dtpezrpx.exe" C:\Windows\SysWOW64\iaflcmjx\
        2⤵
          PID:4988
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create iaflcmjx binPath= "C:\Windows\SysWOW64\iaflcmjx\dtpezrpx.exe /d\"C:\Users\Admin\AppData\Local\Temp\36fb50e4d657b0c654aab8d18dfcca10_NeikiAnalytics.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1612
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description iaflcmjx "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:4812
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start iaflcmjx
          2⤵
          • Launches sc.exe
          PID:1408
        • 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:2864
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4692 -s 648
          2⤵
          • Program crash
          PID:4716
      • C:\Windows\SysWOW64\iaflcmjx\dtpezrpx.exe
        C:\Windows\SysWOW64\iaflcmjx\dtpezrpx.exe /d"C:\Users\Admin\AppData\Local\Temp\36fb50e4d657b0c654aab8d18dfcca10_NeikiAnalytics.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4760
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Deletes itself
          • Drops file in System32 directory
          • Modifies data under HKEY_USERS
          PID:3952
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4760 -s 556
          2⤵
          • Program crash
          PID:4708
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4760 -ip 4760
        1⤵
          PID:1032
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4692 -ip 4692
          1⤵
            PID:5012

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            13.7MB

            MD5

            fe9c51c883737f9dfdd8f49a92a4db9f

            SHA1

            c0295304b6cd13692e9dc0aa6b22fa694311083b

            SHA256

            176b70e9a1d7dbd89faae55a6d4d4269780188767f5d5b3cff67e4472fc37b6b

            SHA512

            9ec07641482a00de78a7e769e3029ca4b2f6b7cac8d2d302d70bd6fab6428fc86031ebd0f9dfc88e5763fa3ad6ad634a262b2e6a90863b6dc093ff12d8e6e7ff

          • memory/3952-44-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-8-0x0000000000910000-0x0000000000925000-memory.dmp

            Filesize

            84KB

          • memory/3952-45-0x0000000002DF0000-0x0000000002DF5000-memory.dmp

            Filesize

            20KB

          • memory/3952-22-0x0000000002B10000-0x0000000002B16000-memory.dmp

            Filesize

            24KB

          • memory/3952-21-0x0000000002900000-0x0000000002B0F000-memory.dmp

            Filesize

            2.1MB

          • memory/3952-25-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-29-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-30-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-14-0x0000000000910000-0x0000000000925000-memory.dmp

            Filesize

            84KB

          • memory/3952-15-0x0000000000910000-0x0000000000925000-memory.dmp

            Filesize

            84KB

          • memory/3952-18-0x0000000002900000-0x0000000002B0F000-memory.dmp

            Filesize

            2.1MB

          • memory/3952-28-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-53-0x0000000007D50000-0x0000000007D57000-memory.dmp

            Filesize

            28KB

          • memory/3952-52-0x0000000007800000-0x0000000007C0B000-memory.dmp

            Filesize

            4.0MB

          • memory/3952-49-0x0000000007800000-0x0000000007C0B000-memory.dmp

            Filesize

            4.0MB

          • memory/3952-48-0x0000000002DF0000-0x0000000002DF5000-memory.dmp

            Filesize

            20KB

          • memory/3952-31-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-43-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-32-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-42-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-41-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-40-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-39-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-38-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-37-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-36-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-35-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-34-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/3952-33-0x0000000002B20000-0x0000000002B30000-memory.dmp

            Filesize

            64KB

          • memory/4692-4-0x0000000000400000-0x0000000000415000-memory.dmp

            Filesize

            84KB

          • memory/4692-2-0x0000000002840000-0x0000000002853000-memory.dmp

            Filesize

            76KB

          • memory/4692-11-0x0000000000400000-0x000000000271D000-memory.dmp

            Filesize

            35.1MB

          • memory/4692-12-0x0000000002840000-0x0000000002853000-memory.dmp

            Filesize

            76KB

          • memory/4692-13-0x0000000000400000-0x0000000000415000-memory.dmp

            Filesize

            84KB

          • memory/4692-1-0x0000000002860000-0x0000000002960000-memory.dmp

            Filesize

            1024KB

          • memory/4760-10-0x0000000000400000-0x000000000271D000-memory.dmp

            Filesize

            35.1MB