tofsee | 4363360eba9bacce9d9e19e369cc7c8e872dae2289150471823514c137342f07

Analysis

max time kernel
145s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28/01/2025, 14:06

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General

Target

2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe
Size

11.5MB
MD5

22e3c237d361b3e4fa05ebbd045f0c12
SHA1

74501e3cd15f8a34d1ebe61d2343bce6c85ddf87
SHA256

4363360eba9bacce9d9e19e369cc7c8e872dae2289150471823514c137342f07
SHA512

aca3ae1830be51e36a02b6438765eb141ad3148176f0fce91cb3f31d45082d60db1bcd40118bfced670d0e605857c6d98626e76d64d8051e756c36077244a314
SSDEEP

6144:jLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQu:YTYe+D2jFu+iZoUFhAz7

Score

10^/10

tofsee defense_evasion discovery 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

defense_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\fqqnwnly = "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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2952	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\fqqnwnly\ImagePath = "C:\\Windows\\SysWOW64\\fqqnwnly\\kfjbrcec.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2724	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2792	kfjbrcec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2792 set thread context of 2724	2792	kfjbrcec.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2424	sc.exe
2808	sc.exe
2844	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	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	kfjbrcec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 2504	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	30
PID 3016 wrote to memory of 2504	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	30
PID 3016 wrote to memory of 2504	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	30
PID 3016 wrote to memory of 2504	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	30
PID 3016 wrote to memory of 2232	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	32
PID 3016 wrote to memory of 2232	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	32
PID 3016 wrote to memory of 2232	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	32
PID 3016 wrote to memory of 2232	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	32
PID 3016 wrote to memory of 2844	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	34
PID 3016 wrote to memory of 2844	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	34
PID 3016 wrote to memory of 2844	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	34
PID 3016 wrote to memory of 2844	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	34
PID 3016 wrote to memory of 2424	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	36
PID 3016 wrote to memory of 2424	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	36
PID 3016 wrote to memory of 2424	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	36
PID 3016 wrote to memory of 2424	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	36
PID 3016 wrote to memory of 2808	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	38
PID 3016 wrote to memory of 2808	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	38
PID 3016 wrote to memory of 2808	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	38
PID 3016 wrote to memory of 2808	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	38
PID 2792 wrote to memory of 2724	2792	kfjbrcec.exe	41
PID 2792 wrote to memory of 2724	2792	kfjbrcec.exe	41
PID 2792 wrote to memory of 2724	2792	kfjbrcec.exe	41
PID 2792 wrote to memory of 2724	2792	kfjbrcec.exe	41
PID 2792 wrote to memory of 2724	2792	kfjbrcec.exe	41
PID 2792 wrote to memory of 2724	2792	kfjbrcec.exe	41
PID 3016 wrote to memory of 2952	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	42
PID 3016 wrote to memory of 2952	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	42
PID 3016 wrote to memory of 2952	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	42
PID 3016 wrote to memory of 2952	3016	2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fqqnwnly\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kfjbrcec.exe" C:\Windows\SysWOW64\fqqnwnly\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2232
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fqqnwnly binPath= "C:\Windows\SysWOW64\fqqnwnly\kfjbrcec.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2844
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fqqnwnly "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2424
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fqqnwnly
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2808
- 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:2952

C:\Windows\SysWOW64\fqqnwnly\kfjbrcec.exe
C:\Windows\SysWOW64\fqqnwnly\kfjbrcec.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_22e3c237d361b3e4fa05ebbd045f0c12_mafia.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:2724

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\kfjbrcec.exe

Filesize
12.2MB

MD5
1e5bf59462d27b2dc64c07a0877098f9

SHA1
81512f49bb093cbb1f38893c548befe35dd1870e

SHA256
8553f39cfdb582c98e64d706b4815cc22f90605928d88dce16c6f87813f5bcdc

SHA512
339496f93e71c717df10290500fcaecd0d1fbb7005379bb47817fde6b292f4b1308cea05e0016628b784febfad6e5dd781b95581c9e801a566c9ceebc8b1e44c

Download Submit
memory/2724-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2724-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2724-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2724-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2724-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2792-13-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3016-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3016-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/3016-1-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/3016-14-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3016-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3016-15-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads