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Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    10/01/2023, 00:07

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General

  • Target

    file.exe

  • Size

    327KB

  • MD5

    c620bc5dee44c490218d77b51a8da747

  • SHA1

    947e939b56984aac0f15afe93e091f0bff74d5a1

  • SHA256

    69e4bc4640c7e9cc9f00c3044c3ec548bbafd8034ee93f53308c935df8e7e651

  • SHA512

    05f9d601f1035ceb160d0774ebdfb9485cf1e399985a4be95ac35f980d39564299448c8016232af5e1c32bf6c57f68820dd6294ebd84e38e6e01fb0ba5c08521

  • SSDEEP

    6144:aIPlkzB13tpPtg4F4qIozg+7dBA0X+JY:aItA391tg4FCocIu

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
  • Windows security bypass 2 TTPs 1 IoCs
    evasiontrojan
  • 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
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    evasion
  • Sets service image path in registry 2 TTPs 1 IoCs
    persistence
  • 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 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:840
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iwkupvxw\
      2⤵
        PID:1172
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fhkvqkza.exe" C:\Windows\SysWOW64\iwkupvxw\
        2⤵
          PID:1500
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create iwkupvxw binPath= "C:\Windows\SysWOW64\iwkupvxw\fhkvqkza.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:596
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description iwkupvxw "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:516
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start iwkupvxw
          2⤵
          • Launches sc.exe
          PID:1828
        • 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:904
      • C:\Windows\SysWOW64\iwkupvxw\fhkvqkza.exe
        C:\Windows\SysWOW64\iwkupvxw\fhkvqkza.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:712
        • 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:1616
          • 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:268

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        11.2MB

        MD5

        0803f5ea5bc6dd7feabb9e4e6598ad2a

        SHA1

        0b58bd6101fed3e63c2916221f36330f53ffae23

        SHA256

        f31e52efc31b317a233888b899d75ade59563866987e2bdb1e93b37384a8ea1c

        SHA512

        d8e550232791af2a150d6b10c92db82c63eabae2848939c9ef621f82d2f3a9a499f818d57bd977b691842a54a928da1859fc05789d3194c38339ff837c812b3d

        Download Submit

      • C:\Windows\SysWOW64\iwkupvxw\fhkvqkza.exe
        Filesize

        11.2MB

        MD5

        0803f5ea5bc6dd7feabb9e4e6598ad2a

        SHA1

        0b58bd6101fed3e63c2916221f36330f53ffae23

        SHA256

        f31e52efc31b317a233888b899d75ade59563866987e2bdb1e93b37384a8ea1c

        SHA512

        d8e550232791af2a150d6b10c92db82c63eabae2848939c9ef621f82d2f3a9a499f818d57bd977b691842a54a928da1859fc05789d3194c38339ff837c812b3d

        Download Submit

      • memory/268-99-0x00000000000D0000-0x00000000001C1000-memory.dmp

        Filesize

        964KB

        Download

      • memory/268-101-0x00000000000D0000-0x00000000001C1000-memory.dmp

        Filesize

        964KB

        Download

      • memory/712-75-0x000000000056D000-0x0000000000583000-memory.dmp

        Filesize

        88KB

        Download

      • memory/712-76-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

        Download

      • memory/840-56-0x000000000064D000-0x0000000000663000-memory.dmp

        Filesize

        88KB

        Download

      • memory/840-66-0x000000000064D000-0x0000000000663000-memory.dmp

        Filesize

        88KB

        Download

      • memory/840-67-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

        Download

      • memory/840-54-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

        Filesize

        8KB

        Download

      • memory/840-57-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

        Download

      • memory/840-58-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

        Download

      • memory/1616-70-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1616-79-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1616-80-0x0000000001A50000-0x0000000001C5F000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/1616-83-0x0000000000150000-0x0000000000156000-memory.dmp

        Filesize

        24KB

        Download

      • memory/1616-86-0x0000000000210000-0x0000000000220000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1616-89-0x0000000000220000-0x0000000000225000-memory.dmp

        Filesize

        20KB

        Download

      • memory/1616-92-0x0000000005930000-0x0000000005D3B000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/1616-95-0x0000000000430000-0x0000000000437000-memory.dmp

        Filesize

        28KB

        Download

      • memory/1616-98-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1616-72-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download