tofsee | f447757c7f775ff8ddc127a32d64912013b05e9075980a8c52135a9d00025041

General

Target

2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe
Size

13.7MB
MD5

b34a84dd7a753b36f32f5044f624e252
SHA1

ee3fa3f6f0c043e0af87785fe53dcf81855cd7d8
SHA256

f447757c7f775ff8ddc127a32d64912013b05e9075980a8c52135a9d00025041
SHA512

fc7f391ef38890a3e0118b32f508f956f4813cf438171bfdece3fbac9f7653591a182c1cd44e1a98ecf63fd45fde03ad8acf1b5c3fc8f71c893844f436070440
SSDEEP

24576:LEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ7:Yfot

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
3980	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\jiwpwvhd\ImagePath = "C:\\Windows\\SysWOW64\\jiwpwvhd\\fsebuhmw.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe

Deletes itself 1 IoCs

pid	Process
1772	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3172	fsebuhmw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3172 set thread context of 1772	3172	fsebuhmw.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2500	sc.exe
2376	sc.exe
408	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
3076	2244	WerFault.exe	81
1016	3172	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	sc.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	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.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	fsebuhmw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 3524	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	82
PID 2244 wrote to memory of 3524	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	82
PID 2244 wrote to memory of 3524	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	82
PID 2244 wrote to memory of 1544	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	84
PID 2244 wrote to memory of 1544	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	84
PID 2244 wrote to memory of 1544	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	84
PID 2244 wrote to memory of 2500	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	86
PID 2244 wrote to memory of 2500	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	86
PID 2244 wrote to memory of 2500	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	86
PID 2244 wrote to memory of 2376	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	88
PID 2244 wrote to memory of 2376	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	88
PID 2244 wrote to memory of 2376	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	88
PID 2244 wrote to memory of 408	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	90
PID 2244 wrote to memory of 408	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	90
PID 2244 wrote to memory of 408	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	90
PID 2244 wrote to memory of 3980	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	93
PID 2244 wrote to memory of 3980	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	93
PID 2244 wrote to memory of 3980	2244	2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe	93
PID 3172 wrote to memory of 1772	3172	fsebuhmw.exe	98
PID 3172 wrote to memory of 1772	3172	fsebuhmw.exe	98
PID 3172 wrote to memory of 1772	3172	fsebuhmw.exe	98
PID 3172 wrote to memory of 1772	3172	fsebuhmw.exe	98
PID 3172 wrote to memory of 1772	3172	fsebuhmw.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jiwpwvhd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3524
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fsebuhmw.exe" C:\Windows\SysWOW64\jiwpwvhd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1544
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jiwpwvhd binPath= "C:\Windows\SysWOW64\jiwpwvhd\fsebuhmw.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jiwpwvhd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jiwpwvhd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:408
- 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:3980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2244 -s 652
  2⤵
  - Program crash
  PID:3076

C:\Windows\SysWOW64\jiwpwvhd\fsebuhmw.exe
C:\Windows\SysWOW64\jiwpwvhd\fsebuhmw.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_b34a84dd7a753b36f32f5044f624e252_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3172 -s 508
  2⤵
  - Program crash
  PID:1016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2244 -ip 2244
1⤵
PID:4828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3172 -ip 3172
1⤵
PID:4404

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\fsebuhmw.exe

Filesize
11.2MB

MD5
4959d7f2232d8a321bc69de3799355ac

SHA1
8cff26d2c925cc5f22cdc89e20c02c02d2677b46

SHA256
52cc2868b0b093581b8535b4383560e38e2212c5ec3a9243d3cdd4bbfc1c82df

SHA512
b59531ea109f89c88a18e406cf20a6d84328ab583f711f8e369bdddf8be9dd287d5c0c83f53352fc2ef085355d22f9ec7925da359d611c9e1a64fbd92cb2ad78

Download Submit
memory/1772-14-0x0000000001080000-0x0000000001095000-memory.dmp

Filesize
84KB

Download
memory/1772-17-0x0000000001080000-0x0000000001095000-memory.dmp

Filesize
84KB

Download
memory/1772-16-0x0000000001080000-0x0000000001095000-memory.dmp

Filesize
84KB

Download
memory/2244-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/2244-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2244-1-0x00000000004C0000-0x00000000005C0000-memory.dmp

Filesize
1024KB

Download
memory/2244-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2244-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2244-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3172-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3172-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3172-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3172-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads