tofsee | 6dd1b05af499bfaae6985c03b6cdf53ec443e7a171e95923cb46672e285c23e3

General

Target

2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe
Size

13.1MB
MD5

383149c0caa91af2b739b5b7c2f3dcbc
SHA1

b7915c9b62b544188bf2f37ebbb70f8a12ed6416
SHA256

6dd1b05af499bfaae6985c03b6cdf53ec443e7a171e95923cb46672e285c23e3
SHA512

d2bd65cb5b6ee8232a78ed6bb7bac8c0bdd3d83bac654418e18c8e7f50e148f408ca812873146c443e4b828e4f18444d6a222bb5d73114135c8d89e8c13aae7c
SSDEEP

393216:GXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXd:a

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
2040	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\ejsluuod\ImagePath = "C:\\Windows\\SysWOW64\\ejsluuod\\nnozuvtb.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-1-5-21-308834014-1004923324-1191300197-1000\Control Panel\International\Geo\Nation	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe

Deletes itself 1 IoCs

pid	Process
4728	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5136	nnozuvtb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5136 set thread context of 4728	5136	nnozuvtb.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
4528	sc.exe
4816	sc.exe
4672	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	cmd.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.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	nnozuvtb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 5452	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	89
PID 2280 wrote to memory of 5452	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	89
PID 2280 wrote to memory of 5452	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	89
PID 2280 wrote to memory of 2296	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	91
PID 2280 wrote to memory of 2296	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	91
PID 2280 wrote to memory of 2296	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	91
PID 2280 wrote to memory of 4528	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	93
PID 2280 wrote to memory of 4528	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	93
PID 2280 wrote to memory of 4528	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	93
PID 2280 wrote to memory of 4816	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	96
PID 2280 wrote to memory of 4816	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	96
PID 2280 wrote to memory of 4816	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	96
PID 2280 wrote to memory of 4672	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	98
PID 2280 wrote to memory of 4672	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	98
PID 2280 wrote to memory of 4672	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	98
PID 5136 wrote to memory of 4728	5136	nnozuvtb.exe	103
PID 5136 wrote to memory of 4728	5136	nnozuvtb.exe	103
PID 5136 wrote to memory of 4728	5136	nnozuvtb.exe	103
PID 5136 wrote to memory of 4728	5136	nnozuvtb.exe	103
PID 5136 wrote to memory of 4728	5136	nnozuvtb.exe	103
PID 2280 wrote to memory of 2040	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	104
PID 2280 wrote to memory of 2040	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	104
PID 2280 wrote to memory of 2040	2280	2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe	104

C:\Users\Admin\AppData\Local\Temp\2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ejsluuod\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5452
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nnozuvtb.exe" C:\Windows\SysWOW64\ejsluuod\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ejsluuod binPath= "C:\Windows\SysWOW64\ejsluuod\nnozuvtb.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4528
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ejsluuod "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ejsluuod
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4672
- 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:2040

C:\Windows\SysWOW64\ejsluuod\nnozuvtb.exe
C:\Windows\SysWOW64\ejsluuod\nnozuvtb.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-04_383149c0caa91af2b739b5b7c2f3dcbc_mafia_rhadamanthys.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5136
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4728

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\nnozuvtb.exe

Filesize
14.5MB

MD5
2de24dedff9d33d2a83f105e77320ada

SHA1
20271c7e2ab8fce00d7746ab517ed86d66357bbc

SHA256
f0e6b0400a0641eaaec44da7825dced9045a041d69824b99f0df851c19e99195

SHA512
6773d5ff151363fb129f05db39c5544c91e7c111249fa0b2e79597b50f0e4c7357d2dccfa0c0d28d7f56cc569d292adedde95c37a9654c027ec9ee1f571ee7f3

Download Submit
memory/2280-1-0x0000000000480000-0x0000000000580000-memory.dmp

Filesize
1024KB

Download
memory/2280-2-0x0000000000460000-0x0000000000473000-memory.dmp

Filesize
76KB

Download
memory/2280-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2280-18-0x0000000000460000-0x0000000000473000-memory.dmp

Filesize
76KB

Download
memory/2280-19-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2280-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4728-11-0x0000000000350000-0x0000000000365000-memory.dmp

Filesize
84KB

Download
memory/4728-16-0x0000000000350000-0x0000000000365000-memory.dmp

Filesize
84KB

Download
memory/4728-20-0x0000000000350000-0x0000000000365000-memory.dmp

Filesize
84KB

Download
memory/4728-21-0x0000000000350000-0x0000000000365000-memory.dmp

Filesize
84KB

Download
memory/4728-22-0x0000000000350000-0x0000000000365000-memory.dmp

Filesize
84KB

Download
memory/5136-15-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/5136-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/5136-10-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/5136-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads