Analysis

  • max time kernel
    146s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    26-09-2024 02:40

General

  • Target

    f4de268ea469d180cfe44713d1b0f5fcf8ea3270af525c6e040497b43a414e1b.exe

  • Size

    238KB

  • MD5

    bfabf02b846c1cd0634fa1bf8a95e4aa

  • SHA1

    912bf8c8c515c98ed82f6ac94ce3517dde29fc6d

  • SHA256

    f4de268ea469d180cfe44713d1b0f5fcf8ea3270af525c6e040497b43a414e1b

  • SHA512

    464b3969a5e5ea0d7d00be5a7a606139a254ee603ad9ff30bfba1b1f70723d85312e76287e88ad7cc47a171f6f4e21723319df0f2404b68dff06e1318d9dd7ae

  • SSDEEP

    3072:EVW80fS45N6hqQLAp+b6+y9vZvTDmnCVN3Z4S4y9gkkhf3FCWs/xy/Q:1fS45N6hk+yfnrjZ4SteGw/Q

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\f4de268ea469d180cfe44713d1b0f5fcf8ea3270af525c6e040497b43a414e1b.exe
    "C:\Users\Admin\AppData\Local\Temp\f4de268ea469d180cfe44713d1b0f5fcf8ea3270af525c6e040497b43a414e1b.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1672
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mgurlqpi\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1344
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bndqedvz.exe" C:\Windows\SysWOW64\mgurlqpi\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2644
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create mgurlqpi binPath= "C:\Windows\SysWOW64\mgurlqpi\bndqedvz.exe /d\"C:\Users\Admin\AppData\Local\Temp\f4de268ea469d180cfe44713d1b0f5fcf8ea3270af525c6e040497b43a414e1b.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2812
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description mgurlqpi "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2660
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start mgurlqpi
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2528
    • 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:2564
  • C:\Windows\SysWOW64\mgurlqpi\bndqedvz.exe
    C:\Windows\SysWOW64\mgurlqpi\bndqedvz.exe /d"C:\Users\Admin\AppData\Local\Temp\f4de268ea469d180cfe44713d1b0f5fcf8ea3270af525c6e040497b43a414e1b.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3068
    • 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:1532

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    14.9MB

    MD5

    3964021b5d6343d9fe45d4320fd2c3a7

    SHA1

    54a472d6e99c184ad4e4665f8444594d0f9a0d38

    SHA256

    a16044622bccc58ca6a34981a7d9aca6f6e1470e8e98588f62981c59c265a72e

    SHA512

    ced63c6efc7b63aaa766b8d661784f92dbb97e7ae306251b106150e5143590bd10300153570422cdd7aadf0a2e1601053eca5b7575e0c109522f62ffdd97354a

  • memory/1532-39-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-27-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-24-0x00000000000A0000-0x00000000000A6000-memory.dmp

    Filesize

    24KB

  • memory/1532-8-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/1532-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/1532-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1532-46-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-30-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-47-0x0000000000300000-0x0000000000305000-memory.dmp

    Filesize

    20KB

  • memory/1532-31-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/1532-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/1532-20-0x0000000001960000-0x0000000001B6F000-memory.dmp

    Filesize

    2.1MB

  • memory/1532-23-0x0000000001960000-0x0000000001B6F000-memory.dmp

    Filesize

    2.1MB

  • memory/1532-55-0x0000000000310000-0x0000000000317000-memory.dmp

    Filesize

    28KB

  • memory/1532-54-0x0000000005630000-0x0000000005A3B000-memory.dmp

    Filesize

    4.0MB

  • memory/1532-51-0x0000000005630000-0x0000000005A3B000-memory.dmp

    Filesize

    4.0MB

  • memory/1532-50-0x0000000000300000-0x0000000000305000-memory.dmp

    Filesize

    20KB

  • memory/1532-32-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-33-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-40-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-44-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-43-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-42-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-41-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-45-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-34-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-38-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-37-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-36-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1532-35-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/1672-1-0x0000000002D30000-0x0000000002E30000-memory.dmp

    Filesize

    1024KB

  • memory/1672-4-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/1672-15-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/1672-14-0x0000000000400000-0x0000000002B5C000-memory.dmp

    Filesize

    39.4MB

  • memory/1672-16-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/1672-2-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/3068-12-0x0000000000400000-0x0000000002B5C000-memory.dmp

    Filesize

    39.4MB