Analysis

  • max time kernel
    144s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03-09-2024 16:39

General

  • Target

    25b5562d7367c5d6b3ba1e972f7dc163d8a420f828f517f6f7d12eb0ba503605.exe

  • Size

    14.7MB

  • MD5

    ea6b8a444ac84e9af4e879ce16c37ff2

  • SHA1

    8aa368fbb8702c4e23e0ea8066efb4b4f6ab93c0

  • SHA256

    25b5562d7367c5d6b3ba1e972f7dc163d8a420f828f517f6f7d12eb0ba503605

  • SHA512

    dff566b5e453b332388c0657de12cec1d0da88dd48542825e8bb3ee340176b91bc662451a622349e16d1b20f0eb1b23d7681185d9e6556e790f5b6c975d1fd48

  • SSDEEP

    12288:iz+wSUpBMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMU:iz8

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

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\25b5562d7367c5d6b3ba1e972f7dc163d8a420f828f517f6f7d12eb0ba503605.exe
    "C:\Users\Admin\AppData\Local\Temp\25b5562d7367c5d6b3ba1e972f7dc163d8a420f828f517f6f7d12eb0ba503605.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1876
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yitsbjbx\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1888
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xohkreqp.exe" C:\Windows\SysWOW64\yitsbjbx\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2332
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create yitsbjbx binPath= "C:\Windows\SysWOW64\yitsbjbx\xohkreqp.exe /d\"C:\Users\Admin\AppData\Local\Temp\25b5562d7367c5d6b3ba1e972f7dc163d8a420f828f517f6f7d12eb0ba503605.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3000
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description yitsbjbx "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2676
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start yitsbjbx
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2672
    • 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:2472
  • C:\Windows\SysWOW64\yitsbjbx\xohkreqp.exe
    C:\Windows\SysWOW64\yitsbjbx\xohkreqp.exe /d"C:\Users\Admin\AppData\Local\Temp\25b5562d7367c5d6b3ba1e972f7dc163d8a420f828f517f6f7d12eb0ba503605.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2660
    • 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:2560

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    12.6MB

    MD5

    0288f387a8aaf7d81ebf2bd6ba66a6ea

    SHA1

    0efc18a938a9d4caca8d129030fa3f346bd50a24

    SHA256

    2792b45cede9fd83781774126270a31281aae9b5f65c7b572df8ecc7d2a8295e

    SHA512

    99e027a0ef872297d94426994b64e619624217abeb61ea93980b6eca1fd9e90cd4a04021bb687318482e56095ecf6f25d9a8ae285ce02302d1418e1cbced29af

  • memory/1876-17-0x0000000000400000-0x000000000041E000-memory.dmp

    Filesize

    120KB

  • memory/1876-3-0x00000000001C0000-0x00000000001C1000-memory.dmp

    Filesize

    4KB

  • memory/1876-2-0x00000000001B0000-0x00000000001B1000-memory.dmp

    Filesize

    4KB

  • memory/1876-1-0x0000000000400000-0x000000000041E000-memory.dmp

    Filesize

    120KB

  • memory/1876-18-0x00000000050E0000-0x00000000050F1000-memory.dmp

    Filesize

    68KB

  • memory/1876-0-0x0000000000400000-0x000000000041E000-memory.dmp

    Filesize

    120KB

  • memory/2560-12-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2560-9-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2560-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2560-19-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2560-20-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2660-15-0x0000000000400000-0x000000000041E000-memory.dmp

    Filesize

    120KB

  • memory/2660-14-0x00000000050E0000-0x00000000050F1000-memory.dmp

    Filesize

    68KB

  • memory/2660-8-0x0000000000400000-0x000000000041E000-memory.dmp

    Filesize

    120KB