tofsee | c878285d30d32d75b6ed5a17f5ef3ce3fd264ac4ad367264e32b81dab57ee549

General

Target

2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe
Size

11.2MB
MD5

3b455b31246b8a9a6548681d39c5fb5d
SHA1

822afd920a826ff81013822285e6e82fe81bf076
SHA256

c878285d30d32d75b6ed5a17f5ef3ce3fd264ac4ad367264e32b81dab57ee549
SHA512

83290f9a90590015df1f3e0a3643cc98e02998ea38ba2f3dbfd3c9832bbb19465e7503a98cdaab13c1c866796cc2ef5fe870f8961043825194f391bc20750df3
SSDEEP

6144:nLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQw:MTYe+D2jFu+iZoUFhAz

Score

10^/10

tofsee discovery evasion 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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2824	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\frvtcacb\ImagePath = "C:\\Windows\\SysWOW64\\frvtcacb\\saptgenn.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	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe

Deletes itself 1 IoCs

pid	Process
3084	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4404	saptgenn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4404 set thread context of 3084	4404	saptgenn.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4388	sc.exe
3240	sc.exe
4932	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
3924	4580	WerFault.exe	82
1644	4404	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	saptgenn.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4580 wrote to memory of 1132	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	83
PID 4580 wrote to memory of 1132	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	83
PID 4580 wrote to memory of 1132	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	83
PID 4580 wrote to memory of 5112	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	85
PID 4580 wrote to memory of 5112	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	85
PID 4580 wrote to memory of 5112	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	85
PID 4580 wrote to memory of 4388	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	87
PID 4580 wrote to memory of 4388	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	87
PID 4580 wrote to memory of 4388	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	87
PID 4580 wrote to memory of 3240	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	89
PID 4580 wrote to memory of 3240	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	89
PID 4580 wrote to memory of 3240	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	89
PID 4580 wrote to memory of 4932	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	92
PID 4580 wrote to memory of 4932	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	92
PID 4580 wrote to memory of 4932	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	92
PID 4580 wrote to memory of 2824	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	95
PID 4580 wrote to memory of 2824	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	95
PID 4580 wrote to memory of 2824	4580	2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe	95
PID 4404 wrote to memory of 3084	4404	saptgenn.exe	100
PID 4404 wrote to memory of 3084	4404	saptgenn.exe	100
PID 4404 wrote to memory of 3084	4404	saptgenn.exe	100
PID 4404 wrote to memory of 3084	4404	saptgenn.exe	100
PID 4404 wrote to memory of 3084	4404	saptgenn.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4580
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\frvtcacb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1132
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\saptgenn.exe" C:\Windows\SysWOW64\frvtcacb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5112
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create frvtcacb binPath= "C:\Windows\SysWOW64\frvtcacb\saptgenn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description frvtcacb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start frvtcacb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4932
- 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:2824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4580 -s 1036
  2⤵
  - Program crash
  PID:3924

C:\Windows\SysWOW64\frvtcacb\saptgenn.exe
C:\Windows\SysWOW64\frvtcacb\saptgenn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-13_3b455b31246b8a9a6548681d39c5fb5d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4404
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 512
  2⤵
  - Program crash
  PID:1644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4580 -ip 4580
1⤵
PID:3316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4404 -ip 4404
1⤵
PID:3636

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\saptgenn.exe

Filesize
11.7MB

MD5
816049af1ccc345c6e45014a30723e1d

SHA1
31c1c18d8717f40824179219514f6d9306e4e9c2

SHA256
86bd0897ee02490ddd204355b4b86a9e6960dc409bbe7b0a5216c785b3783dea

SHA512
ab8412667232c774baee3417fb04bfb947fd7de94d4fc2779fc75a624ec4aba4c49cb7f24905b37e0d91c03dd94f3149627ae55f61202d9c0a5efafbf43276a7

Download Submit
memory/3084-11-0x0000000000750000-0x0000000000765000-memory.dmp

Filesize
84KB

Download
memory/3084-22-0x0000000000750000-0x0000000000765000-memory.dmp

Filesize
84KB

Download
memory/3084-21-0x0000000000750000-0x0000000000765000-memory.dmp

Filesize
84KB

Download
memory/3084-20-0x0000000000750000-0x0000000000765000-memory.dmp

Filesize
84KB

Download
memory/3084-14-0x0000000000750000-0x0000000000765000-memory.dmp

Filesize
84KB

Download
memory/4404-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4404-10-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4404-19-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4404-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4580-1-0x0000000000570000-0x0000000000670000-memory.dmp

Filesize
1024KB

Download
memory/4580-16-0x0000000000540000-0x0000000000553000-memory.dmp

Filesize
76KB

Download
memory/4580-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4580-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4580-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4580-2-0x0000000000540000-0x0000000000553000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads