Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    06/08/2024, 02:39

General

  • Target

    f4d0a30894abd66615326caa634eeb082e8cc4ced56dab62e9219ac2c28294ca.exe

  • Size

    13.0MB

  • MD5

    a5b50eaa46c9477e60d39778fa662926

  • SHA1

    ed043f86af11c291b3e508d14fe1c4232aab1842

  • SHA256

    f4d0a30894abd66615326caa634eeb082e8cc4ced56dab62e9219ac2c28294ca

  • SHA512

    c5234a621effaaafb46f07542a8ab0991cc580b18555b13e082dfb9a18e19a3fa372cd522a13fbafcad39ad343ca526ccc14ff3e8ccc3dede6e7fca4ed51106f

  • SSDEEP

    24576:8IbasG14OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOm:8ItG1

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
  • Creates new service(s) 2 TTPs
  • Modifies Windows Firewall 2 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 1 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).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies data under HKEY_USERS 6 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f4d0a30894abd66615326caa634eeb082e8cc4ced56dab62e9219ac2c28294ca.exe
    "C:\Users\Admin\AppData\Local\Temp\f4d0a30894abd66615326caa634eeb082e8cc4ced56dab62e9219ac2c28294ca.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2744
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\awosdimv\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3020
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\adwhhqrr.exe" C:\Windows\SysWOW64\awosdimv\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2784
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create awosdimv binPath= "C:\Windows\SysWOW64\awosdimv\adwhhqrr.exe /d\"C:\Users\Admin\AppData\Local\Temp\f4d0a30894abd66615326caa634eeb082e8cc4ced56dab62e9219ac2c28294ca.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2524
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description awosdimv "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2500
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start awosdimv
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2564
    • 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
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:2964
  • C:\Windows\SysWOW64\awosdimv\adwhhqrr.exe
    C:\Windows\SysWOW64\awosdimv\adwhhqrr.exe /d"C:\Users\Admin\AppData\Local\Temp\f4d0a30894abd66615326caa634eeb082e8cc4ced56dab62e9219ac2c28294ca.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2304
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Windows security bypass
      • Sets service image path in registry
      • Deletes itself
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      PID:572

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    11.2MB

    MD5

    80604eab468a8a79106edd658ccd1078

    SHA1

    59a96a28c5692b53cadf74ca447f8c74b15268bd

    SHA256

    ccbc1dbdaa3cd13890454c04877e30ca13e143695bba5639c714df2fce7673da

    SHA512

    5aeb6cf5c94acf7e708bc55a43d4e983d6f4f0c6366a2fce3b886480ec838d8bd450ec36a3573fa893559dbc51b5dac4a69381e0a1cdf9d43d83f2463ce7e4e5

  • memory/572-47-0x00000000000C0000-0x00000000000C5000-memory.dmp

    Filesize

    20KB

  • memory/572-45-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-24-0x00000000000A0000-0x00000000000A6000-memory.dmp

    Filesize

    24KB

  • memory/572-55-0x00000000003E0000-0x00000000003E7000-memory.dmp

    Filesize

    28KB

  • memory/572-27-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-30-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/572-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/572-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/572-44-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/572-31-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-20-0x0000000001AB0000-0x0000000001CBF000-memory.dmp

    Filesize

    2.1MB

  • memory/572-23-0x0000000001AB0000-0x0000000001CBF000-memory.dmp

    Filesize

    2.1MB

  • memory/572-51-0x00000000054D0000-0x00000000058DB000-memory.dmp

    Filesize

    4.0MB

  • memory/572-54-0x00000000054D0000-0x00000000058DB000-memory.dmp

    Filesize

    4.0MB

  • memory/572-50-0x00000000000C0000-0x00000000000C5000-memory.dmp

    Filesize

    20KB

  • memory/572-32-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-33-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-46-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/572-43-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-42-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-41-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-40-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-39-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-38-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-37-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-36-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-35-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/572-34-0x00000000000B0000-0x00000000000C0000-memory.dmp

    Filesize

    64KB

  • memory/2304-16-0x0000000000400000-0x0000000002836000-memory.dmp

    Filesize

    36.2MB

  • memory/2744-2-0x0000000000240000-0x0000000000253000-memory.dmp

    Filesize

    76KB

  • memory/2744-1-0x00000000029E0000-0x0000000002AE0000-memory.dmp

    Filesize

    1024KB

  • memory/2744-8-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2744-7-0x0000000000400000-0x0000000002836000-memory.dmp

    Filesize

    36.2MB

  • memory/2744-9-0x0000000000240000-0x0000000000253000-memory.dmp

    Filesize

    76KB

  • memory/2744-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB