Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2024 04:42

General

  • Target

    4b2eae5f660d21810fb7d69e18c361751faa4bc3518d6803c64984cdd6cac5a8.exe

  • Size

    333KB

  • MD5

    76a120236d4a3c44182016bd9a05417c

  • SHA1

    c548777e9a3fb26597525edee630c79231357a5b

  • SHA256

    4b2eae5f660d21810fb7d69e18c361751faa4bc3518d6803c64984cdd6cac5a8

  • SHA512

    e773fa8ed3eeb3aae4ce818553f5f06a9f3c8f7e7b89135c10743bffb989b16862d0e29d855194203aef3a1fe19420308bddad92922b3b1bd1a6357e09ffe246

  • SSDEEP

    6144:xOYmVlRyNQpj0ViCx2xKxc9Sh/KXl/wLWlWC8RzZap6j:xW7Rw2j0VmKqgJKXlwGeVZL

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Tofsee family
  • 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\4b2eae5f660d21810fb7d69e18c361751faa4bc3518d6803c64984cdd6cac5a8.exe
    "C:\Users\Admin\AppData\Local\Temp\4b2eae5f660d21810fb7d69e18c361751faa4bc3518d6803c64984cdd6cac5a8.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2040
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sivuvujf\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1908
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mbcivgaz.exe" C:\Windows\SysWOW64\sivuvujf\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2000
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create sivuvujf binPath= "C:\Windows\SysWOW64\sivuvujf\mbcivgaz.exe /d\"C:\Users\Admin\AppData\Local\Temp\4b2eae5f660d21810fb7d69e18c361751faa4bc3518d6803c64984cdd6cac5a8.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2392
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description sivuvujf "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2496
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start sivuvujf
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2940
    • 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:2980
  • C:\Windows\SysWOW64\sivuvujf\mbcivgaz.exe
    C:\Windows\SysWOW64\sivuvujf\mbcivgaz.exe /d"C:\Users\Admin\AppData\Local\Temp\4b2eae5f660d21810fb7d69e18c361751faa4bc3518d6803c64984cdd6cac5a8.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2228
    • 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:2700

Network

  • flag-us
    DNS
    microsoft.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    microsoft.com
    IN A
    Response
    microsoft.com
    IN A
    20.236.44.162
    microsoft.com
    IN A
    20.70.246.20
    microsoft.com
    IN A
    20.231.239.246
    microsoft.com
    IN A
    20.112.250.133
    microsoft.com
    IN A
    20.76.201.171
  • flag-us
    DNS
    microsoft.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    microsoft.com
    IN MX
    Response
    microsoft.com
    IN MX
    microsoft-commail protectionoutlook�
  • flag-us
    DNS
    microsoft-com.mail.protection.outlook.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    microsoft-com.mail.protection.outlook.com
    IN A
    Response
    microsoft-com.mail.protection.outlook.com
    IN A
    52.101.8.32
    microsoft-com.mail.protection.outlook.com
    IN A
    52.101.194.17
    microsoft-com.mail.protection.outlook.com
    IN A
    52.101.8.46
    microsoft-com.mail.protection.outlook.com
    IN A
    52.101.10.5
  • flag-us
    DNS
    microsoft-com.mail.protection.outlook.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    microsoft-com.mail.protection.outlook.com
    IN A
  • flag-us
    DNS
    microsoft-com.mail.protection.outlook.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    microsoft-com.mail.protection.outlook.com
    IN A
  • flag-us
    DNS
    quadoil.ru
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    quadoil.ru
    IN A
    Response
  • flag-us
    DNS
    quadoil.ru
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    quadoil.ru
    IN A
  • flag-us
    DNS
    yahoo.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    yahoo.com
    IN MX
    Response
    yahoo.com
    IN MX
    mta7am0yahoodnsnet
    yahoo.com
    IN MX
    mta5�.
    yahoo.com
    IN MX
    mta6�.
  • flag-us
    DNS
    mta7.am0.yahoodns.net
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    mta7.am0.yahoodns.net
    IN A
    Response
    mta7.am0.yahoodns.net
    IN A
    98.136.96.74
    mta7.am0.yahoodns.net
    IN A
    98.136.96.75
    mta7.am0.yahoodns.net
    IN A
    67.195.204.77
    mta7.am0.yahoodns.net
    IN A
    67.195.228.106
    mta7.am0.yahoodns.net
    IN A
    98.136.96.77
    mta7.am0.yahoodns.net
    IN A
    98.136.96.76
    mta7.am0.yahoodns.net
    IN A
    98.136.96.91
    mta7.am0.yahoodns.net
    IN A
    67.195.204.72
  • flag-us
    DNS
    lakeflex.ru
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    lakeflex.ru
    IN A
    Response
  • flag-us
    DNS
    google.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    google.com
    IN MX
    Response
    google.com
    IN MX
    smtp�
  • flag-us
    DNS
    smtp.google.com
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    smtp.google.com
    IN A
    Response
    smtp.google.com
    IN A
    64.233.184.26
    smtp.google.com
    IN A
    142.251.168.26
    smtp.google.com
    IN A
    142.251.173.26
    smtp.google.com
    IN A
    64.233.184.27
    smtp.google.com
    IN A
    74.125.206.26
  • flag-us
    DNS
    mail.ru
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    mail.ru
    IN MX
    Response
    mail.ru
    IN MX
    mxs�
  • flag-us
    DNS
    mxs.mail.ru
    svchost.exe
    Remote address:
    8.8.8.8:53
    Request
    mxs.mail.ru
    IN A
    Response
    mxs.mail.ru
    IN A
    217.69.139.150
    mxs.mail.ru
    IN A
    94.100.180.31
  • 20.236.44.162:80
    microsoft.com
    svchost.exe
    190 B
    92 B
    4
    2
  • 52.101.8.32:25
    microsoft-com.mail.protection.outlook.com
    svchost.exe
    152 B
    3
  • 98.136.96.74:25
    mta7.am0.yahoodns.net
    svchost.exe
    152 B
    3
  • 64.233.184.26:25
    smtp.google.com
    svchost.exe
    152 B
    3
  • 217.69.139.150:25
    mxs.mail.ru
    svchost.exe
    152 B
    3
  • 8.8.8.8:53
    microsoft.com
    dns
    svchost.exe
    59 B
    139 B
    1
    1

    DNS Request

    microsoft.com

    DNS Response

    20.236.44.162
    20.70.246.20
    20.231.239.246
    20.112.250.133
    20.76.201.171

  • 8.8.8.8:53
    microsoft.com
    dns
    svchost.exe
    59 B
    113 B
    1
    1

    DNS Request

    microsoft.com

  • 8.8.8.8:53
    microsoft-com.mail.protection.outlook.com
    dns
    svchost.exe
    261 B
    151 B
    3
    1

    DNS Request

    microsoft-com.mail.protection.outlook.com

    DNS Request

    microsoft-com.mail.protection.outlook.com

    DNS Request

    microsoft-com.mail.protection.outlook.com

    DNS Response

    52.101.8.32
    52.101.194.17
    52.101.8.46
    52.101.10.5

  • 8.8.8.8:53
    quadoil.ru
    dns
    svchost.exe
    112 B
    117 B
    2
    1

    DNS Request

    quadoil.ru

    DNS Request

    quadoil.ru

  • 8.8.8.8:53
    yahoo.com
    dns
    svchost.exe
    55 B
    134 B
    1
    1

    DNS Request

    yahoo.com

  • 8.8.8.8:53
    mta7.am0.yahoodns.net
    dns
    svchost.exe
    67 B
    195 B
    1
    1

    DNS Request

    mta7.am0.yahoodns.net

    DNS Response

    98.136.96.74
    98.136.96.75
    67.195.204.77
    67.195.228.106
    98.136.96.77
    98.136.96.76
    98.136.96.91
    67.195.204.72

  • 8.8.8.8:53
    lakeflex.ru
    dns
    svchost.exe
    57 B
    118 B
    1
    1

    DNS Request

    lakeflex.ru

  • 8.8.8.8:53
    google.com
    dns
    svchost.exe
    56 B
    77 B
    1
    1

    DNS Request

    google.com

  • 8.8.8.8:53
    smtp.google.com
    dns
    svchost.exe
    61 B
    141 B
    1
    1

    DNS Request

    smtp.google.com

    DNS Response

    64.233.184.26
    142.251.168.26
    142.251.173.26
    64.233.184.27
    74.125.206.26

  • 8.8.8.8:53
    mail.ru
    dns
    svchost.exe
    53 B
    73 B
    1
    1

    DNS Request

    mail.ru

  • 8.8.8.8:53
    mxs.mail.ru
    dns
    svchost.exe
    57 B
    89 B
    1
    1

    DNS Request

    mxs.mail.ru

    DNS Response

    217.69.139.150
    94.100.180.31

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    13.4MB

    MD5

    9c99c5cf5e65381b57fb4e58b1d0641a

    SHA1

    04eeb20af5e5d941af9b64fd83a882f66705be29

    SHA256

    3eb3c18ef20973ff08234d6db1accbafa9ba291e604eefe6e5dc2eb607ca8a21

    SHA512

    b0a248b5f94bd87aaf62e78434af8ebee2daa0bc40a6ffb2ab3b60f120beaf6f5c5a08a16a05a15648a3abed49cdff353bdfa5fdcfb145e9b74e3c4ac591ef4e

  • memory/2040-15-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2040-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

    Filesize

    1024KB

  • memory/2040-2-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2040-16-0x00000000002D0000-0x00000000003D0000-memory.dmp

    Filesize

    1024KB

  • memory/2040-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2040-14-0x0000000000400000-0x0000000000882000-memory.dmp

    Filesize

    4.5MB

  • memory/2228-13-0x0000000000400000-0x0000000000882000-memory.dmp

    Filesize

    4.5MB

  • memory/2700-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2700-8-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2700-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2700-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2700-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

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