Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    02-09-2024 23:05

General

  • Target

    78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe

  • Size

    11.3MB

  • MD5

    e465df146e4a00ed2e4a0d941003a13c

  • SHA1

    451f1f0877d638646261a730de87929f01debf68

  • SHA256

    78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5

  • SHA512

    39151020dc52e537ae0333a2a317f70406f9da72fb9013fd49358cb71a39fabc5c267e0fb19d2e28dc2fa221b218857b9dc03320f64b03e99fb31a615cc06983

  • SSDEEP

    3072:NoiqjV0QCeV75zMwb2EfDXTBrt0c5f+Z7ApWt+0krytpObPUfAGM4H1M4CjiJNx4:NoiqjWHeV9zthDjBrmA+VkDbSAgQiTx

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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
  • 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.

  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe
    "C:\Users\Admin\AppData\Local\Temp\78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2208
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zabzdkor\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2852
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gwwwlcia.exe" C:\Windows\SysWOW64\zabzdkor\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2896
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create zabzdkor binPath= "C:\Windows\SysWOW64\zabzdkor\gwwwlcia.exe /d\"C:\Users\Admin\AppData\Local\Temp\78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2904
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description zabzdkor "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2844
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start zabzdkor
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:324
    • 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:2580
  • C:\Windows\SysWOW64\zabzdkor\gwwwlcia.exe
    C:\Windows\SysWOW64\zabzdkor\gwwwlcia.exe /d"C:\Users\Admin\AppData\Local\Temp\78ffb37d0d83a6cab5ffda39feca2226b7313e14cf2591742a713cbbf4346ef5.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2628
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Windows security bypass
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2212

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    10.1MB

    MD5

    4c691e6413b4dcede0e9266bcac56ea1

    SHA1

    e770129c61597db78d0d14fc1431e9d7a23284f1

    SHA256

    f8e70020c5695d18e3a68a70064aa3aff9e018b9eb8fa10885c11e0db7a16799

    SHA512

    3505b31d47d5d30560e269200699ccae2f5a3e58b0a0bd316a53b39c4e15997fbdba23f08f359d5db72558323dc0fd2624f3d295c250780c255ebfe2a953e7bf

  • memory/2208-8-0x0000000000400000-0x000000000086B000-memory.dmp

    Filesize

    4.4MB

  • memory/2208-4-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2208-2-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2208-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2208-9-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2208-1-0x0000000000CD0000-0x0000000000DD0000-memory.dmp

    Filesize

    1024KB

  • memory/2212-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2212-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2212-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2212-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2212-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2628-17-0x0000000000400000-0x000000000086B000-memory.dmp

    Filesize

    4.4MB