tofsee | e2679cbb1ef3e09480268cb51f3e9b10947e19fdf15fb951629f83b8097f1533

Analysis

max time kernel
146s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19/01/2025, 20:19

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General

Target

2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe
Size

14.1MB
MD5

24a8c7936e334ee7ab9ff26103ac6b25
SHA1

02650252a3393d59ee832c4ff28fdabb22a21f9c
SHA256

e2679cbb1ef3e09480268cb51f3e9b10947e19fdf15fb951629f83b8097f1533
SHA512

3ba123dd0c3dbeb8d88bf1bc129e40459a25da0e5d7e5d9b3c1db3d08995ba4c615aecad4bc5655c59a7a1ee096bd9ab58c12eb5e6f5ac9b7049a4f071f463a1
SSDEEP

24576:LpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttV:doo

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.ru

Signatures

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\yvhuhxto = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2948	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\yvhuhxto\ImagePath = "C:\\Windows\\SysWOW64\\yvhuhxto\\fbttqfes.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2916	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2772	fbttqfes.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2772 set thread context of 2916	2772	fbttqfes.exe	42

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2704	sc.exe
2748	sc.exe
2888	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fbttqfes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 2404	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	30
PID 2120 wrote to memory of 2404	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	30
PID 2120 wrote to memory of 2404	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	30
PID 2120 wrote to memory of 2404	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	30
PID 2120 wrote to memory of 2348	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	32
PID 2120 wrote to memory of 2348	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	32
PID 2120 wrote to memory of 2348	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	32
PID 2120 wrote to memory of 2348	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	32
PID 2120 wrote to memory of 2704	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	34
PID 2120 wrote to memory of 2704	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	34
PID 2120 wrote to memory of 2704	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	34
PID 2120 wrote to memory of 2704	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	34
PID 2120 wrote to memory of 2748	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	37
PID 2120 wrote to memory of 2748	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	37
PID 2120 wrote to memory of 2748	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	37
PID 2120 wrote to memory of 2748	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	37
PID 2120 wrote to memory of 2888	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	39
PID 2120 wrote to memory of 2888	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	39
PID 2120 wrote to memory of 2888	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	39
PID 2120 wrote to memory of 2888	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	39
PID 2772 wrote to memory of 2916	2772	fbttqfes.exe	42
PID 2772 wrote to memory of 2916	2772	fbttqfes.exe	42
PID 2772 wrote to memory of 2916	2772	fbttqfes.exe	42
PID 2772 wrote to memory of 2916	2772	fbttqfes.exe	42
PID 2772 wrote to memory of 2916	2772	fbttqfes.exe	42
PID 2772 wrote to memory of 2916	2772	fbttqfes.exe	42
PID 2120 wrote to memory of 2948	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	43
PID 2120 wrote to memory of 2948	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	43
PID 2120 wrote to memory of 2948	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	43
PID 2120 wrote to memory of 2948	2120	2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yvhuhxto\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2404
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fbttqfes.exe" C:\Windows\SysWOW64\yvhuhxto\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2348
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yvhuhxto binPath= "C:\Windows\SysWOW64\yvhuhxto\fbttqfes.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yvhuhxto "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yvhuhxto
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2888
- 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:2948

C:\Windows\SysWOW64\yvhuhxto\fbttqfes.exe
C:\Windows\SysWOW64\yvhuhxto\fbttqfes.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-19_24a8c7936e334ee7ab9ff26103ac6b25_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2772
- 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:2916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\fbttqfes.exe

Filesize
11.6MB

MD5
9e52a3b31123df1f8aa5fa3bb6aca950

SHA1
4f2f569c77715a0800cdfd9212d22efe833abb07

SHA256
bfd863d3e2c1723d676eacf4f4f791918f15151adcbd94e5a327a58511e155a8

SHA512
4b29c3433462139f98ecc113149fa315137c3a0277f86a6227439f4ce09b5a887176bddb9fb208cf8044ce31eee24bd30734dcb5bd7742173e8768e8d8012b98

Download Submit
memory/2120-16-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2120-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2120-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2120-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2120-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/2120-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2772-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2916-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2916-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2916-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2916-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2916-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads