Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05-09-2024 09:30

General

  • Target

    8777baf9f5a68be1faf17fa6f7c5ab3de0113392784cc150b822b7db5426e380.exe

  • Size

    11.2MB

  • MD5

    3482cbbb23d7548633dde35f128ea40a

  • SHA1

    b8cba7389b8e195b30ceb2e1a2b1d1fd6129adbd

  • SHA256

    8777baf9f5a68be1faf17fa6f7c5ab3de0113392784cc150b822b7db5426e380

  • SHA512

    db334c6aae52045ff3ce7597f172cce21f5a3a61a85b8dd4c5517eac649b60e429df968e1538c99080449d0ebfb5d8e917cb43bfa105e27d0a790ca2463748c7

  • SSDEEP

    6144:Oc6OZDisWsD0Td2HJxO+m8PuG1R4WnWjrsaz:O1OZDisvwdaxO0PuG1R4CWs

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 7 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8777baf9f5a68be1faf17fa6f7c5ab3de0113392784cc150b822b7db5426e380.exe
    "C:\Users\Admin\AppData\Local\Temp\8777baf9f5a68be1faf17fa6f7c5ab3de0113392784cc150b822b7db5426e380.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:804
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qtinqgui\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2548
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rlqojmjl.exe" C:\Windows\SysWOW64\qtinqgui\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1700
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create qtinqgui binPath= "C:\Windows\SysWOW64\qtinqgui\rlqojmjl.exe /d\"C:\Users\Admin\AppData\Local\Temp\8777baf9f5a68be1faf17fa6f7c5ab3de0113392784cc150b822b7db5426e380.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1684
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description qtinqgui "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2776
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start qtinqgui
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2868
    • 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:2664
  • C:\Windows\SysWOW64\qtinqgui\rlqojmjl.exe
    C:\Windows\SysWOW64\qtinqgui\rlqojmjl.exe /d"C:\Users\Admin\AppData\Local\Temp\8777baf9f5a68be1faf17fa6f7c5ab3de0113392784cc150b822b7db5426e380.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2784
    • 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:2268

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    10.1MB

    MD5

    0d7409ad4a3c915eb714dfc46204e586

    SHA1

    81730ca958aee97683b82a5b02ec1ab86eaa0c91

    SHA256

    aabc8e83dce59aec6974fcd89578a6230396bbcfa7ccf65b56e7ecfb07477194

    SHA512

    7c1b0ee0d4d1eff81e7a90d76bdf3981c6d5217d75dbc65c0171f75f05920e21acbbbb005e6c3e68eac0b48ae8aead7e827e25b9fe141bde2bd82d4dcc420781

  • memory/804-16-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/804-2-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/804-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/804-1-0x0000000000720000-0x0000000000820000-memory.dmp

    Filesize

    1024KB

  • memory/804-14-0x0000000000400000-0x00000000005FE000-memory.dmp

    Filesize

    2.0MB

  • memory/804-15-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2268-54-0x0000000005510000-0x000000000591B000-memory.dmp

    Filesize

    4.0MB

  • memory/2268-45-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2268-23-0x0000000001A20000-0x0000000001C2F000-memory.dmp

    Filesize

    2.1MB

  • memory/2268-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2268-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2268-21-0x0000000001A20000-0x0000000001C2F000-memory.dmp

    Filesize

    2.1MB

  • memory/2268-27-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-24-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2268-55-0x0000000000200000-0x0000000000207000-memory.dmp

    Filesize

    28KB

  • memory/2268-51-0x0000000005510000-0x000000000591B000-memory.dmp

    Filesize

    4.0MB

  • memory/2268-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2268-50-0x00000000001F0000-0x00000000001F5000-memory.dmp

    Filesize

    20KB

  • memory/2268-47-0x00000000001F0000-0x00000000001F5000-memory.dmp

    Filesize

    20KB

  • memory/2268-46-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-8-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2268-44-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-43-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-42-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-41-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-40-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-39-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-38-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-37-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-36-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-35-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-34-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-33-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-32-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-31-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2268-30-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/2784-13-0x0000000000400000-0x00000000005FE000-memory.dmp

    Filesize

    2.0MB