tofsee | 8c93a1ad3becf7fd178c2526ef33212acb7a6b1fb7dd4bc717e13934fdd8f127

General

Target

2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe
Size

12.8MB
MD5

18f9339a95fac76942d8999f633c3aa3
SHA1

0a791317aeba1090788020b6a0977a9936cdac24
SHA256

8c93a1ad3becf7fd178c2526ef33212acb7a6b1fb7dd4bc717e13934fdd8f127
SHA512

df367f27bb475073eff4060bed9a6053437bd0c3e5926a48798cb4ab1d45c63c9676252e782b8557e406895504e3ea7658d7dfaa01eccc9da9341265b0660634
SSDEEP

24576:PEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZk:MfotG

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
4812	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\knmdissa\ImagePath = "C:\\Windows\\SysWOW64\\knmdissa\\bdyexku.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe

Deletes itself 1 IoCs

pid	Process
644	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2336	bdyexku.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2336 set thread context of 644	2336	bdyexku.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3388	sc.exe
728	sc.exe
2564	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
3412	4772	WerFault.exe	82
3288	2336	WerFault.exe	94

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	bdyexku.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4772 wrote to memory of 4712	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	84
PID 4772 wrote to memory of 4712	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	84
PID 4772 wrote to memory of 4712	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	84
PID 4772 wrote to memory of 1696	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	86
PID 4772 wrote to memory of 1696	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	86
PID 4772 wrote to memory of 1696	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	86
PID 4772 wrote to memory of 3388	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	88
PID 4772 wrote to memory of 3388	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	88
PID 4772 wrote to memory of 3388	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	88
PID 4772 wrote to memory of 728	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	90
PID 4772 wrote to memory of 728	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	90
PID 4772 wrote to memory of 728	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	90
PID 4772 wrote to memory of 2564	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	92
PID 4772 wrote to memory of 2564	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	92
PID 4772 wrote to memory of 2564	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	92
PID 4772 wrote to memory of 4812	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	95
PID 4772 wrote to memory of 4812	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	95
PID 4772 wrote to memory of 4812	4772	2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe	95
PID 2336 wrote to memory of 644	2336	bdyexku.exe	101
PID 2336 wrote to memory of 644	2336	bdyexku.exe	101
PID 2336 wrote to memory of 644	2336	bdyexku.exe	101
PID 2336 wrote to memory of 644	2336	bdyexku.exe	101
PID 2336 wrote to memory of 644	2336	bdyexku.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\knmdissa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4712
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bdyexku.exe" C:\Windows\SysWOW64\knmdissa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1696
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create knmdissa binPath= "C:\Windows\SysWOW64\knmdissa\bdyexku.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description knmdissa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:728
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start knmdissa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2564
- 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:4812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 1036
  2⤵
  - Program crash
  PID:3412

C:\Windows\SysWOW64\knmdissa\bdyexku.exe
C:\Windows\SysWOW64\knmdissa\bdyexku.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_18f9339a95fac76942d8999f633c3aa3_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2336 -s 508
  2⤵
  - Program crash
  PID:3288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4772 -ip 4772
1⤵
PID:2496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2336 -ip 2336
1⤵
PID:4476

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\bdyexku.exe

Filesize
13.4MB

MD5
2b0bfd85c879c2f065d79a77d281fc08

SHA1
58b943fb040402a324062f9525303b1f658492e2

SHA256
b773bcdc9c1457edbe70ec17890a9c295197b831a193abd601315690ec32f1ca

SHA512
a674918fd19955f49acf929bd83c12eb70e14b51344cf822fa1f47d4990e827b4926642eccfd511dcc9afc251b8421ef297f29b7d3577af112e8a5a2af5bf587

Download Submit
memory/644-14-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/644-17-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/644-16-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/2336-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2336-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2336-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2336-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4772-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4772-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4772-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/4772-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4772-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4772-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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