tofsee | afd0a3a9ccf343cb2715dee65320a086f810802051a81f39bca3838280cc96fa

General

Target

2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe
Size

12.9MB
MD5

911cc5e56fb7367da1798a04b9c370fb
SHA1

995550c02c0e2f934005d26ab82fde7da37fad1a
SHA256

afd0a3a9ccf343cb2715dee65320a086f810802051a81f39bca3838280cc96fa
SHA512

8e165e186b8520569c36c653c196e1526b8eaf27b9e5995611fff386d42a85ac33cc970efe87e48cb7e307f139d787ff5faab24337342fe6a51b0045e251d144
SSDEEP

6144:oLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQl:9TYe+D2jFu+iZoUFhAz

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
1136	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\rwsjwlin\ImagePath = "C:\\Windows\\SysWOW64\\rwsjwlin\\toskalnl.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-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\International\Geo\Nation	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe

Deletes itself 1 IoCs

pid	Process
3788	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4784	toskalnl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4784 set thread context of 3788	4784	toskalnl.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4320	sc.exe
1068	sc.exe
808	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
4624	1980	WerFault.exe	82
1404	4784	WerFault.exe	96

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	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	toskalnl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 2528	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	86
PID 1980 wrote to memory of 2528	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	86
PID 1980 wrote to memory of 2528	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	86
PID 1980 wrote to memory of 4920	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	88
PID 1980 wrote to memory of 4920	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	88
PID 1980 wrote to memory of 4920	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	88
PID 1980 wrote to memory of 4320	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	90
PID 1980 wrote to memory of 4320	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	90
PID 1980 wrote to memory of 4320	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	90
PID 1980 wrote to memory of 1068	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	92
PID 1980 wrote to memory of 1068	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	92
PID 1980 wrote to memory of 1068	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	92
PID 1980 wrote to memory of 808	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	94
PID 1980 wrote to memory of 808	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	94
PID 1980 wrote to memory of 808	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	94
PID 1980 wrote to memory of 1136	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	97
PID 1980 wrote to memory of 1136	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	97
PID 1980 wrote to memory of 1136	1980	2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe	97
PID 4784 wrote to memory of 3788	4784	toskalnl.exe	101
PID 4784 wrote to memory of 3788	4784	toskalnl.exe	101
PID 4784 wrote to memory of 3788	4784	toskalnl.exe	101
PID 4784 wrote to memory of 3788	4784	toskalnl.exe	101
PID 4784 wrote to memory of 3788	4784	toskalnl.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rwsjwlin\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\toskalnl.exe" C:\Windows\SysWOW64\rwsjwlin\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rwsjwlin binPath= "C:\Windows\SysWOW64\rwsjwlin\toskalnl.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rwsjwlin "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1068
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rwsjwlin
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:808
- 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:1136
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1980 -s 1036
  2⤵
  - Program crash
  PID:4624

C:\Windows\SysWOW64\rwsjwlin\toskalnl.exe
C:\Windows\SysWOW64\rwsjwlin\toskalnl.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_911cc5e56fb7367da1798a04b9c370fb_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4784
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3788
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4784 -s 536
  2⤵
  - Program crash
  PID:1404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1980 -ip 1980
1⤵
PID:2492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4784 -ip 4784
1⤵
PID:4168

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\toskalnl.exe

Filesize
13.7MB

MD5
1097414e018b5f198c1408684a1de9d6

SHA1
9a79995f2ac12d3a2c6dcfacede41318cfb8e23c

SHA256
5599b58065dbd45319481aa9c414088abce9820bac93f9c33421f7648f2cf71b

SHA512
36dc1e6fd57f1b1ad89b94efdaa9d41a29992d7b562c4e92943159d5539dfbe41ab5ff2a05bbd23b841e5802a9ab2cd5daea7d4ac5777c43f5df9988793b79e3

Download Submit
memory/1980-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1980-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1980-2-0x0000000000510000-0x0000000000523000-memory.dmp

Filesize
76KB

Download
memory/1980-16-0x0000000000510000-0x0000000000523000-memory.dmp

Filesize
76KB

Download
memory/1980-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1980-1-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/3788-14-0x0000000000410000-0x0000000000425000-memory.dmp

Filesize
84KB

Download
memory/3788-10-0x0000000000410000-0x0000000000425000-memory.dmp

Filesize
84KB

Download
memory/3788-19-0x0000000000410000-0x0000000000425000-memory.dmp

Filesize
84KB

Download
memory/3788-20-0x0000000000410000-0x0000000000425000-memory.dmp

Filesize
84KB

Download
memory/3788-21-0x0000000000410000-0x0000000000425000-memory.dmp

Filesize
84KB

Download
memory/4784-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4784-11-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4784-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads