tofsee | c3eab9f7c4d60f0601c2279352a461391abc84140b33de56f265e8a77dbfb2d2

General

Target

2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe
Size

10.6MB
MD5

a71863a497a119aa46ae43adedf4664f
SHA1

c050da7d1a1ea25b3e2f250ef1c94f2cc843fa06
SHA256

c3eab9f7c4d60f0601c2279352a461391abc84140b33de56f265e8a77dbfb2d2
SHA512

173d2fed46cbd86b3cb2265813adad5fd62dedff5e5f8f63ceb48a2b539a622ded02387d218efe286d1e40489561227af08af4652398f3698372c06c97ed0757
SSDEEP

24576:OpomTTN9ttttttttttttttttttttttttttttttttttttttttttttttttttttttt/:ioo

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
4900	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\frptluoc\ImagePath = "C:\\Windows\\SysWOW64\\frptluoc\\tnnepypr.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\Control Panel\International\Geo\Nation	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe

Deletes itself 1 IoCs

pid	Process
2948	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2464	tnnepypr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2464 set thread context of 2948	2464	tnnepypr.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
2988	sc.exe
724	sc.exe
1288	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2900	4252	WerFault.exe	83
692	2464	WerFault.exe	100

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	cmd.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tnnepypr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4252 wrote to memory of 3924	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	90
PID 4252 wrote to memory of 3924	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	90
PID 4252 wrote to memory of 3924	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	90
PID 4252 wrote to memory of 960	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	92
PID 4252 wrote to memory of 960	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	92
PID 4252 wrote to memory of 960	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	92
PID 4252 wrote to memory of 2988	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	94
PID 4252 wrote to memory of 2988	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	94
PID 4252 wrote to memory of 2988	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	94
PID 4252 wrote to memory of 724	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	96
PID 4252 wrote to memory of 724	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	96
PID 4252 wrote to memory of 724	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	96
PID 4252 wrote to memory of 1288	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	98
PID 4252 wrote to memory of 1288	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	98
PID 4252 wrote to memory of 1288	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	98
PID 4252 wrote to memory of 4900	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	101
PID 4252 wrote to memory of 4900	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	101
PID 4252 wrote to memory of 4900	4252	2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe	101
PID 2464 wrote to memory of 2948	2464	tnnepypr.exe	106
PID 2464 wrote to memory of 2948	2464	tnnepypr.exe	106
PID 2464 wrote to memory of 2948	2464	tnnepypr.exe	106
PID 2464 wrote to memory of 2948	2464	tnnepypr.exe	106
PID 2464 wrote to memory of 2948	2464	tnnepypr.exe	106

C:\Users\Admin\AppData\Local\Temp\2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\frptluoc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3924
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tnnepypr.exe" C:\Windows\SysWOW64\frptluoc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:960
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create frptluoc binPath= "C:\Windows\SysWOW64\frptluoc\tnnepypr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description frptluoc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start frptluoc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1288
- 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:4900
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4252 -s 1036
  2⤵
  - Program crash
  PID:2900

C:\Windows\SysWOW64\frptluoc\tnnepypr.exe
C:\Windows\SysWOW64\frptluoc\tnnepypr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-06_a71863a497a119aa46ae43adedf4664f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2464
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2464 -s 552
  2⤵
  - Program crash
  PID:692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4252 -ip 4252
1⤵
PID:4288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2464 -ip 2464
1⤵
PID:3604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
14.7MB

MD5
029e430bed788ba67d72e06f2c72ec53

SHA1
b3a323c838fb491265c3e09b1c88de5897bd5e59

SHA256
0eeb91bd1630fd3304ae8cd0047109303b3eefee709173acaee0558c3934d2da

SHA512
9753bc220faa803f7dd4740c36bf99d9b7103a05ea011379b09a87496e66954e2a234db69c1adb75bb4804f66b37e510656a7fe858ba56a4bfb7aa4042ea7820

Download Submit
memory/2464-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2464-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2464-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2464-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2948-14-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download
memory/2948-16-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download
memory/2948-17-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download
memory/4252-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4252-2-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/4252-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4252-8-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/4252-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4252-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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