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Analysis

  • max time kernel
    144s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    06/09/2024, 23:46

General

  • Target

    8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe

  • Size

    14.6MB

  • MD5

    e22e7c6baeebd701b760f4a27a02d8c4

  • SHA1

    1b924330a134a074ecb6f59affde76d6989100c0

  • SHA256

    8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda

  • SHA512

    aa15560cb2fee8ae0c07acc6403f1ec9f33dc63cd6965d5e8af2f645970bb3c0fb7cec48646ddcaaa0fbef010bcdbc0468ea5c78658ea25994d1e1cd80e904e4

  • SSDEEP

    98304:SC+PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPf:x

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\8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe
    "C:\Users\Admin\AppData\Local\Temp\8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3020
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dujbqvms\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1864
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qgbnhtxp.exe" C:\Windows\SysWOW64\dujbqvms\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2764
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create dujbqvms binPath= "C:\Windows\SysWOW64\dujbqvms\qgbnhtxp.exe /d\"C:\Users\Admin\AppData\Local\Temp\8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2760
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description dujbqvms "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2796
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start dujbqvms
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2592
    • 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:2720
  • C:\Windows\SysWOW64\dujbqvms\qgbnhtxp.exe
    C:\Windows\SysWOW64\dujbqvms\qgbnhtxp.exe /d"C:\Users\Admin\AppData\Local\Temp\8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2792
    • 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:2960

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    11.0MB

    MD5

    083ebf5b25cd495bc2c303ed2ae135d3

    SHA1

    cc3114a8c030b2a0802e1f30f7ad35e9be919a62

    SHA256

    88a602ff092c04c964c8a06e59e54ee642bbc8d914d2844d6102f9b9d441b894

    SHA512

    49d7a5e1eb15f00e10d60941d0b4d3c97186cacf2cd6b826e99cad73a6d8509757880fa2f99a7df29cbe26cedeaa308ee2be63bac255add771508fd889026528

  • memory/2792-15-0x0000000000400000-0x00000000004AD000-memory.dmp

    Filesize

    692KB

  • memory/2960-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2960-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2960-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2960-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2960-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/3020-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/3020-8-0x0000000000400000-0x00000000004AD000-memory.dmp

    Filesize

    692KB

  • memory/3020-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/3020-9-0x00000000001B0000-0x00000000001C3000-memory.dmp

    Filesize

    76KB

  • memory/3020-1-0x0000000000290000-0x0000000000390000-memory.dmp

    Filesize

    1024KB

  • memory/3020-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

    Filesize

    76KB