tofsee | 2923852431766d3da326baf4bffac6a92a0092e87be7f0f451e4633cb755626b

General

Target

2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe
Size

12.8MB
MD5

b8cbe229db5f5116bb60fa4475e58ea8
SHA1

3fcce4344791f791ba62199ad71297387936f038
SHA256

2923852431766d3da326baf4bffac6a92a0092e87be7f0f451e4633cb755626b
SHA512

6fc0df22623afd501ca73b07790a2bb8f92e700294ba9a9aa6e119a9597596d2a7d10dc28fe650eedc718f118810fd15c349068fe78d95847dfa014b1120ec82
SSDEEP

24576:NEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZj:2fot

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
2904	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\pgehxlo\ImagePath = "C:\\Windows\\SysWOW64\\pgehxlo\\lngryguk.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe

Deletes itself 1 IoCs

pid	Process
1380	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4356	lngryguk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4356 set thread context of 1380	4356	lngryguk.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
1924	sc.exe
4984	sc.exe
4456	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3004	3648	WerFault.exe	80
3012	4356	WerFault.exe	92

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	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	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.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	lngryguk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3648 wrote to memory of 3952	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	82
PID 3648 wrote to memory of 3952	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	82
PID 3648 wrote to memory of 3952	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	82
PID 3648 wrote to memory of 2240	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	84
PID 3648 wrote to memory of 2240	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	84
PID 3648 wrote to memory of 2240	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	84
PID 3648 wrote to memory of 1924	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	86
PID 3648 wrote to memory of 1924	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	86
PID 3648 wrote to memory of 1924	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	86
PID 3648 wrote to memory of 4984	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	88
PID 3648 wrote to memory of 4984	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	88
PID 3648 wrote to memory of 4984	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	88
PID 3648 wrote to memory of 4456	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	90
PID 3648 wrote to memory of 4456	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	90
PID 3648 wrote to memory of 4456	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	90
PID 3648 wrote to memory of 2904	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	93
PID 3648 wrote to memory of 2904	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	93
PID 3648 wrote to memory of 2904	3648	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	93
PID 4356 wrote to memory of 1380	4356	lngryguk.exe	100
PID 4356 wrote to memory of 1380	4356	lngryguk.exe	100
PID 4356 wrote to memory of 1380	4356	lngryguk.exe	100
PID 4356 wrote to memory of 1380	4356	lngryguk.exe	100
PID 4356 wrote to memory of 1380	4356	lngryguk.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3648
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pgehxlo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3952
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lngryguk.exe" C:\Windows\SysWOW64\pgehxlo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pgehxlo binPath= "C:\Windows\SysWOW64\pgehxlo\lngryguk.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1924
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pgehxlo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pgehxlo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4456
- 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:2904
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3648 -s 1044
  2⤵
  - Program crash
  PID:3004

C:\Windows\SysWOW64\pgehxlo\lngryguk.exe
C:\Windows\SysWOW64\pgehxlo\lngryguk.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4356
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4356 -s 544
  2⤵
  - Program crash
  PID:3012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3648 -ip 3648
1⤵
PID:2428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4356 -ip 4356
1⤵
PID:4868

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\lngryguk.exe

Filesize
10.3MB

MD5
9fdfe9888a658a5c32023f56eb4a1daf

SHA1
c35594f8fa42629e33c74c5a7a52ea5224d98ffc

SHA256
2c1daf4538b0fce4b51d1110d91ad7f24f900fe91d93f5d166c9e00ca4236faf

SHA512
c63fd406f45d1b5d9b9caeecc17b0877eba1f5450327c207a526de7204818fa07498bee684633bfe95ddb13cddde62e8376d79915dfcc5abc73a188066748249

Download Submit
memory/1380-14-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/1380-17-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/1380-16-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/3648-8-0x0000000000880000-0x0000000000893000-memory.dmp

Filesize
76KB

Download
memory/3648-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3648-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/3648-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3648-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3648-2-0x0000000000880000-0x0000000000893000-memory.dmp

Filesize
76KB

Download
memory/4356-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4356-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4356-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4356-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads