Analysis

  • max time kernel
    144s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-08-2024 23:46

General

  • Target

    ed38d0a2443e4c2ea2ccb9c381f06aa11380c1c51117ef3eb9f327e9bca88411.exe

  • Size

    14.3MB

  • MD5

    2d357e20218ecce7a188d34e2163ac1c

  • SHA1

    1a5bf816db5c146b3b685fdb28c3761608fdfef4

  • SHA256

    ed38d0a2443e4c2ea2ccb9c381f06aa11380c1c51117ef3eb9f327e9bca88411

  • SHA512

    59d6d72c15003acd59936ad400a1d1d465c1d109e9c7360f14603c709679e1fddabfae87252fbb0829fad05fa668deca594715d4775bb2fa9b04af776a7fb182

  • SSDEEP

    6144:uM0Em6Qk5N3Sccccccccccccccccccccccccccccccccccccccccccccccccccc8:oEma

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.

  • Creates new service(s) 2 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ed38d0a2443e4c2ea2ccb9c381f06aa11380c1c51117ef3eb9f327e9bca88411.exe
    "C:\Users\Admin\AppData\Local\Temp\ed38d0a2443e4c2ea2ccb9c381f06aa11380c1c51117ef3eb9f327e9bca88411.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2064
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dcdikdmc\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3624
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eqrlgcda.exe" C:\Windows\SysWOW64\dcdikdmc\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:232
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create dcdikdmc binPath= "C:\Windows\SysWOW64\dcdikdmc\eqrlgcda.exe /d\"C:\Users\Admin\AppData\Local\Temp\ed38d0a2443e4c2ea2ccb9c381f06aa11380c1c51117ef3eb9f327e9bca88411.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2032
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description dcdikdmc "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5052
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start dcdikdmc
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5032
    • 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:2024
  • C:\Windows\SysWOW64\dcdikdmc\eqrlgcda.exe
    C:\Windows\SysWOW64\dcdikdmc\eqrlgcda.exe /d"C:\Users\Admin\AppData\Local\Temp\ed38d0a2443e4c2ea2ccb9c381f06aa11380c1c51117ef3eb9f327e9bca88411.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1844
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2536

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    11.2MB

    MD5

    59a3c98025b464ac9ac9fd2824f5fba2

    SHA1

    10bad430ca1f2a19bfcb34aab4bfa24acb749452

    SHA256

    1f71961315c21f882ca23fb28dc2bca3db6b5e433c8d5808299982143a6dfd97

    SHA512

    f5d7f71ff65df0b3c738442e6c36c0db8032047ca983d22414e980f1f0c9f7247a7d243fa38c3a9d6b7381036095b71b4216ac316d2315bf6034cacd803354ed

  • memory/1844-7-0x0000000000690000-0x0000000000691000-memory.dmp

    Filesize

    4KB

  • memory/1844-12-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2064-0-0x0000000000B50000-0x0000000000B51000-memory.dmp

    Filesize

    4KB

  • memory/2064-1-0x0000000000B60000-0x0000000000B61000-memory.dmp

    Filesize

    4KB

  • memory/2064-2-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2064-13-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2536-8-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

    Filesize

    84KB

  • memory/2536-11-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

    Filesize

    84KB

  • memory/2536-14-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

    Filesize

    84KB

  • memory/2536-15-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

    Filesize

    84KB

  • memory/2536-16-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

    Filesize

    84KB